DE29505971U1 - Support device (for keyboard) - Google Patents

Description

Support device gf* ··;· '· :**:*'*: : DESCRIPTION The present invention relates to a hand support or rest device for users of keyboards, in particular electronic keyboards (e.g. for computers, data input and typewriters and telephones). i

As shown below, the invention relates to both wrist and arm supports; furthermore, the applicability for use in general hand work.

According to the state of the art, support devices for arm rests and wrist rests are known which enable the movement of the rest over the writing field of the keyboard. *Corresponding devices use linear ⁵ or rotating mechanisms for the all-round movement of the rest, for example: DE 40 25 143 and DE 42 30 935. DE40 25 143 uses a support device for the wrist rest which can be moved over the entire keyboard in both coordinate directions by means of a rail guide and, as a further alternative, the use of a telescopic rod mounted on both sides of the keyboard. DE 42 935 only uses a linear rail guide parallel to the front of the keyboard, whereby a swivel arm is used for the movement towards or away from the keyboard which is absolutely necessary when typing; the device cannot function without this arm. *The movement mechanisms corresponding to the state of the art have the following disadvantages: *They require a fitting guide, low-friction precision bearings (for coordinate slides or telescopic rods or swivel levers), such as ball joints and rail guides. The frictional forces prevailing due to this structure prevent the support device from being able to follow the hand movements without resistance during typing; furthermore, the usual structure of such movement guides contains a large mass moment of inertia with a disruptive effect on the hand movements. *The task of the present invention is to eliminate these

Disadvantages, with a motion guide without ball joints, without sliding shafts, without sliding bearings and without sliding bushes and _a particularly low mass moment of inertia. The low mass moment of inertia of the motion guide of the cushion is retained even when using large-volume cushions, preferably with the use of an air cushion. *In an optional design variant, such an air cushion with freedom of movement on all sides is used through flexible or twistable support fastening according to G 93 15 862.9 of 03.02.94 in accordance with the principle of a cushion rocking on a rocking line (e.g. air or water cushion made of a foil bag), but with further developments according to the invention for more intensive formation of the rocking roller, which results from the dimensioning of the cushion filling medium and supports a rolling movement of the cushion with corresponding deformation of its shell (e.g. the foil bag). The further development measure according to the invention relates to the generation of the tensioning force of the cushion, in particular the support surface for the hand (in the case of a hand support) or for the arm (in the case of an arm support), which is carried out from two force generation components: a) the filling pressure of the filling medium (e.g. air or water with air) prevailing in the air cushion and b) the tensioning force generated by a tensioning frame, whereby the cushion has a low filling pressure which tensions the cushion when the hand or arm is resting against the frame (or cushion cover). *As described in the embodiments described later, the frame is preferably formed by the cushion cover itself; with four cover sides which form a window covered with a fleece material and are fixed to it by Velcro. In addition, it is of course possible to manufacture the frame entirely or partially (e.g. angle support) from resilient, solid material '*. ^In the following, an embodiment is also described in which the frame support of the cushion relates to the oblique elevation of a cushion underside by a strip, whereby a recess is formed for the support surface of the cushion between this strip and the rocking line fixation of the cushion, which

the formation of a rocker roller is reduced;. *£a*bߧonäffir»s·* Execution, a depression (83) is formed by the cumulative effect when the tension force of the cushion is generated on the hand or arm rest, in particular when the longitudinal fold (or longitudinal seam) of the film bag is also used as a support surface for the hand or arm, as described below (Fig.61 and Fig.61..). ^Overview of the inventive measures for solving the technical problem and inventive further developments: *The inventive solution to the problem not only concerns the improvement of the movement control of the support device, but in an inventive further development also the solution of the technical problem of significantly reducing the hand support pressure of the cushion and significantly improving the force distribution for the pressure forces acting on the hand from all sides. *To improve the motion control of the support device and in particular to significantly reduce the mass moment of inertia while avoiding heavy bearing parts (e.g. in connection with air cushions) and to ensure universal mobility of the rail-guided part, a ruler surface designed as a sliding surface is provided on which (small) sliding surfaces slide which are separated in terms of area and which are attached to the underside of the cushion directly or axially to another support surface of the cushion (hereinafter referred to as the slide plate), with one or more sliders being guided tightly or with a correspondingly loose play by a guide line running in the longitudinal direction of the ruler. Variants are described below in which the guide line running in the longitudinal direction of the ruler is designed either as a guide slot or as a protruding guide web and runs along the longitudinal center line of the ruler, whereby a protruding edge of the ruler can also be included as a guide web in the motion control of the cushion. The sliding surface of the ruler can also have any shape to match the shape of the keyboard, including curves in multi-dimensional

sional directions {parallel to the keyboard3;front;iin:i,e" concave or convex to the keyboard front line); in a further option, a variant is provided for the rotatable cushion support, in which the zero position of the angle of rotation, formed e.g. with an elastic band, is adjusted via the displacement path of the cushion according to a predetermined function (cf. Fig.385· *Two basic variants are provided for the movement guide, one of which guides the support surface of the cushion (or the underside of the cushion) in several lines by means of parallel guide lines (guide slot, guide web), and a second variant in which the support surface of the cushion (or the underside of the cushion) is guided in one line with only one guide line. In the preferred design, in the single-line version only one sliding element is guided as a guide element by the guide line (e.g. designed as a pin), which due to its mobility on the guide line (e.g. as a pin sliding along the guide groove) at the same time forms the axis of rotation and the other sliding elements merely support the support surface of the cushion by sliding on the sliding surface. The guide element has a removal safety device, e.g. in the form of a sliding plate which slides enclosed in a guide groove below the sliding surface, or e.g. slides between two parallel guide webs which have a protruding upper edge which prevents the plate from being removed. In the multi-row guided version, on the other hand, measures are provided for rotating the cushion on a slide plate, in particular using elastic bands. *To reduce the pressure on the hand and improve the distribution of the pressure forces acting on the hand from all sides, it is intended that several cushions ' are provided in a row for each hand, which is favored in practical use by the improved movement control of the cushions compared to the prior art. *Examples of further development options of the invention are: a sensor is used which is extremely cost-effective and with which the control of the cursor (writing cursor) and the image functions (turning the pages), or also

any mouse function can be carried out very advantageously. *Two different versions are described below for this sensor system, which can also be easily combined with one another, and of which a first generates control signals depending on the way the cushion is pressed by the hand placed on it, and a further version in which direction-dependent incremental steps are generated for a function assignment selected using a key on the keyboard (e.g. image key or cursor vertical or cursor horizontal), which are generated during the displacement of a cushion (e.g. right cushion) over the rail by scanning the length of the displacement path. In this context, in a further developed version, use is made of an activation signal, which is generated via the first version of the control signal generation for a detection that indicates whether the cushion is pressed by the hand placed on it: i.e. hand is resting on it or not. In a simplified version, the activation signal is triggered directly by an activation key that is within the cushion's range of action and is also reset or reset by detecting a time elapse after activation. *The activation signal serves the purpose of indicating to the sensor electronics whether the keystroke of a key in question affects the function assignment for the cushion input function or whether the key was only pressed during a program function of the computer. Further details on this are explained in the later part of the description (see also Fig.28 and Fig.29). *Other preferential measures, which are explained in detail in the following part of the description, relate to a design in which the hand rest cushions are within

of a play relative to the movement guide, this displacement is sensed by sensors and used for motor control of the cushion movement in such a way

is used so that by means of zero force kp/nppnsakiqn.' the,.Kiesen follow the hand movements smoothly. For this variant, the length scanning of the displacement path can also be recorded directly via the drive path of the motor follow-up control (e.g. by means of the unwound cable length using a tachometer generator, optical disk or damping measurement on a spiral spring or measurement of the inductance prevailing in each case due to the wound cable length on the insulated spool reel, with one tap e.g. on the metal axis of the spool reel and another tap by the metal pressure roller of the unwound cable) *For a variant in which this is not done, the length scanning of the displacement path is preferably measured by means of a capacitive length scale. *Further details of the length measuring system are described in relation to the figures in the following part of the description (see Fig.49). * Further preferred details relate to the manufacture of the cushions: *For the air cushion version, it is preferred that an inflated bag made of gas-tight film is used as the air cushion, e.g. made of a material such as that used in the food industry for vacuum bags {COLAMIN PA/&Rgr;&Egr; tubular film, etc.). *In a special further development, the air cushion is additionally filled with water or another liquid to store cold, which makes it possible to pre-cool the cushions in the cool box or refrigerator on hot days. *For this variant, an optional horizontal partition wall is inserted in the air cushion, which forms a separate chamber for the liquid and a chamber for the air, thus preventing the liquid from sloshing around in the cushion. *In a preferred embodiment, the film bags are welded together on one side by wider holding seams (using heat tape) and a separating seam (using heat wire) is provided on the outside of each holding seam, which on the one hand creates an absolutely gas-tight connection and at the same time separates the film material. *Examples of embodiment and further developments of the invention are described below with reference to the figures Fig.1 to Fig.60.

*Fig. 1 shows an example design (not shown) with the hand rest divided into 2 cushions, for the left hand {1} and right hand {2}, with a rocker band {15} provided for each cushion, by means of which each cushion adheres to the rest via narrow strips {7} and can be rocked against the front of the keyboard or along the rocker line {= centre line) {7b}. The rocker band is fixed to a support surface of the cushions {3}, preferably using a Velcro fastener. The support surface of the cushions or the sliding surface of the rail guide is positioned freely in front of the front line of the keyboard {8} or is immovably fixed to a common support surface {9} with a Velcro fastener to the keyboard. {1} and {2}...cushion cover, e.g. leather. *Fig. 2 shows an example design with air chamber division {cylinder 10b}. As indicated as an option in Fig.l, these cylinders arranged in a row can also run at a slight angle towards the front line of the keyboard ({10b...air hoses for the right hand and left hand with a mirror-image angle symmetrical to the middle of the keyboard). Fig.2 shows two versions for the formation of the rocking line: {7}...a rocking band as described in Fig.l, or a Velcro connection {11} provided along the rocking line, where, for example, a mushroom strip as Velcro {11} forms the rocking line {11} and is glued to the support surface of the cushions in the lengthwise direction of the keyboard, and the cushions in question have a fleece underside which is placed on the Velcro strips. * Fig.3 illustrates a variant of a further embodiment according to Fig.2 with the option of making the support on the underside of the cushion more elastic and twistable along the rocking line {e.g. by incisions made from both longitudinal edges of the cushion towards the rocking line at the connection points where the inflated air cylinders {10b} are lined up {18, blackened}. The incisions are only made so far inwards that a rocking band remains that runs across the width of the rocking line {11} of the cushion in the direction of the cushion length (hatched in Fig.3), and is attached to the support {3} via a preferred Velcro fastener; as

It is optionally possible to cover the air cylinders, which are arranged in a laminated manner, with a thin film (17). {1} and {2}...cushion cover, e.g. leather. *For the air cushion version, there is the option of filling the air cushions, which are made from welded-together films, with air once in a gas-tight manner before welding them shut, or of providing a valve for readjusting the air pressure. As described in the following examples, even with the valve-less version it is possible to regulate the hardness of the support felt by the hand directly with a pressure plate or by adjusting the level to the hand placed on it, in particular by using several cushions arranged one behind the other. *Fig.4 illustrates the rocking process and another example of how to form the rocking stiffener {7} or the rocking line {12}. 'In the upper left quadrant of the figure, the rocking back and forth {by angle {§}) of the air-foil cushion {10} when the hand is moving at the pressure points {13} around the center line {m} is illustrated. Top right in Fig.4 is an air-filled tube {lob} which, as an option, can be achieved by gluing tubes lined up next to one another along a band {11}, as for example by cutting the connecting lines as shown in Fig.5 {hatching in Fig.4 corresponds to glued-on band, e.g. made of fleece material). * Below is a variant of the Velcro version, a version in which a fabric band is used as a rocker band (two bands placed on top of each other and sewn along the longitudinal center line, folded to form a U-profile, with the longitudinal seam {12} forming a kind of hinge across the width of the rocker band {11})/. *At the very bottom of Fig.4 the cushion (air cushion 10 with cover 1 or 2) is shown, with rocker band {7} or Velcro band {11} on the support surface 3 '' and fleece underside {4}; as well as: {9}, {8} see Fig.l to *Fig.5, see Fig.4. *Fig.6 concerns an optional design with raising the rocker line by inserting wooden strips and an angle support {ß} along the rocker line with a tension band axis as a pivot point {198 8}, around the angle of rotation {ß}; {!}...cushion outline. The rocker band support {15} has corresponding tabs {16b} into which

Wooden strips {16a} for stabilizing the device mean: 102...stops on strips 16a _f by means of which, in an optional design, the angle of attack of the rocker band can be increased depending on the twist (wooden strip slides over stops). {V}...direction parallel to the keyboard front line corresponds to the first rocker line of the cushion, angle {B}.-..angle of inclination by which the cushion can be rocked sideways.

*Fig.7 to Fig.10 illustrate further developments, as a variant for the direct twistability of the cushion guide, e.g. for parallel guidance. Here, a deformable attachment of the cushions to their support surface ϕ is carried out by the deformation of an elastically springy, flexible L _x ^ surface in the form of rubber bands. * Fig.7 shows a variant with 2 rubber bands {38a} stretched parallel to the support surface {3}, connected by a cross band. The cross band has tab slots {54} through which the rubber bands are inserted, so that the cross band {38b} comes to lie on the longitudinal center line of the support surface {3}. The following mean: {V}...direction parallel to the keyboard front line corresponds to the first rocking line of the cushion, angle iß}...angle of inclination by which the cushion can be rocked sideways; furthermore: 38b cross band coated with mushroom tape (Velcro tape) {38b}i {32b}...optionally used mushroom tape adhesive surfaces w for the fleece tape underside. {101}...on the underside of the carriage ""- fixed sliding elements for support on the slide rail, see description of the following figures (Fig.30 and Fig.32), where support surface {3} = support plate {100}. * Fig.8 shows a variant in which the user can configure 2 options: a first in which the fleece underside of the cushion is placed directly on the mushroom tape strip {32d} of the rocker line on the ' support surface {100}; or a second in which the fleece underside of the cushion is attached via an interposed elastic band {3 38} which is on the underside

at each of its ends with short;^lalxscft£iäoh ·£32«&iacgr;&khgr;} is placed on the mushroom tape strip of the support surface {100}, whereby the middle of the elastic band remains freely stretchable (cf. angle {wß}) and is also coated on the top with a mushroom tape surface, onto which the fleece underside of the cushion is placed. In a further option, the mushroom tape strip of the rocking line is not continuous, but only designed as short adhesive surface pieces, one of which is in the middle for the direct placement of the cushion underside, and two on the side edges for the elastic band to be placed on. *A further option can be selected for this variant, to extend the rocking area in an oblique direction, in which a shaped body (&zgr;.e. strip piece with a square surface {207}) is placed under the point where the cushion is placed on the elastic band and also attached with Velcro; {207}.. ..is a sliding surface of the molded body with which it can move as frictionlessly as possible on its non-attached side. The upper illustration in Fig.8 shows the option with an attached elastic band, the lower illustration the version without a band. *In addition to the possibility of attaching the individual sliding elements directly to the underside of the cushion, this is provided for further developed embodiments on the underside of a slide plate {100} as a support surface for the cushion, whereby the movement of the cushion along the keyboard via the individual sliding elements on the sliding surface, and the cushion movement in the direction of the keyboard front, takes place through the rocking movement of the cushion and/or further sliding movement. *On the right in Fig.8 a side view is shown, where {123} is the fleece underside of the cushion and 32b is the adhesive surface of the mushroom tape. *Fig.9 shows another variant in which, in contrast to Fig.5, the elastic band {38} is placed crosswise on the Velcro strip {32d} of the rocking line of the mushroom band placed on the support surface {100}. Furthermore, an optional raising option is also provided at the point of adhesion on the underside of the cushion, which, however, can be achieved with an air foil cushion.

(cylinder {207}). ^g.§ zeTi,g1;„according to the sieha, first the covering of the mushroom tape strip applied to the cushion support surface, then the applied elastic band as a cross strip {38} and further the twistability of the elastic band in band strips {wß}. * {V} in Fig.8 means the direction of movement of the slide plate {100} along the keyboard front. *If the cushion underside has a relatively large fleece surface, it is intended to cover the areas of mushroom tape that should not adhere to the fleece tape directly with fleece tape strips {cf. {32 Z} in Fig.9). * Fig.10 illustrates two further embodiments for the twistable elastic and flexible fastening of the cushion underside to the support surface {3, or 100}. In the example shown above, rubber bands {38} are stretched across the longitudinal direction on the support plate {3}, on which the mushroom band surfaces for attaching the fleece band cushion underside are attached {32b}. In the example shown below, the cushion is attached using a cross band. *In a further development, the elastic band or the cushion cover itself has a fine metal fabric, which is used as a damping surface for direct sensory scanning by means of coils, see later in the description. *Fig.11 to Fig.15 illustrate examples of optional design variants of the air cushion, in particular for the shape, whereby a simple cushion without multiple chambers arranged in a row is manufactured for this preferred variant. * Fig.11 shows how a shaping template {19} is inserted into the film bag {10} as a frame before inflation, whereby this shaping template can support different shapes of the inflated cushion. The upper part of the illustration shows a top view with two dashed outlines of the inserted form templates (e.g. cardboard), the lower part shows a side view, in which the form template is only inserted, and in the lower part, the form template is on one side of the "foil bag in places or over the entire

The bottom is additionally glued on, so that after inflation the air cushion has a flatter or more even surface. *Fig.l2 shows a proposal in which the air cushion has a stabilizing frame on the outside {19} or inside. *Fig.l3 explains a proposal for inflating the air cushion, see also identical positions in Fig.11. Starting from a roll with a film tube, the rectangular piece shown in Fig.13 is cut off from the tube on the broad side ({55}-..folded long sides of the tube) and the first broad side is welded shut with a separating seam using a hot wire and simultaneously severed; furthermore, immediately next to this seam, another holding seam {20} is placed with a heat tape to weld the relevant film sides at this point. * The piece of film cut from the roll is {by {30}) slightly longer than the air cushion when inflated. Taking this extension {30} into account, the Retaining seam {24} is welded to the heat band, whereby this retaining seam still leaves a narrow channel {23} free on one edge to the interior of the welded foil cushion. In a next step, a further retaining seam {21} is welded to the heat band approximately perpendicular to the last weld seam {24} made, which is positioned in such a way that it crosses this seam {24} at the point where the narrow channel is kept free {23}, so that this further seam {21} creates an injection nozzle for the cushion {28,55,24,55}, into which an injection nozzle {22} can be inserted for filling (or inflating). After inflation, a further retaining seam is welded on the inside {27} and/or outside {26} directly next to the retaining seam {24}, which has the injection channel {23}, which closes the injection channel {23}. Then the protruding part ^ of the cushion, which was only needed for the blow-in nozzle, is cut off by a separating seam using a hot wire. As a further option, a holding seam {20} can be welded along the inside of the folded bag sides {55} using heat tape. * As a further alternative, in the version shown in Fig.13

the foil bag is also fitted with a recessed Σ Tyemif γ iie. or a smaller bag to form a further layered chamber, which is filled with a liquid to store cold. Other options are to use 2 foils of different thicknesses or 2 particularly thin foils instead of the bag, with foil strips placed between them at the points of the welding and separating seams for reinforcement. *Fig.14 illustrates another variant for the air foil cushion, in which the foil sides are welded together at points or in places using short wide-band stitched seams {63} to keep the cushion narrower. .* Fig.15 concerns a variant with bevelled cushion corners {204} (pressed in after the welded foil bag has been inflated, corresponding to the lower figure of Fig.15); see also Fig.13 and 14 for further reference designations. *For the sake of COMPLETENESS, measures for shaping the cushion cover with rounded corners (e.g. with cushions according to Fig.15) are illustrated in Fig.16 to Fig.20, whereby in particular a cushion with non-rounded corners is preferred, corresponding to Fig.21 to Fig.21d and as described in the later part of the description of Fig.23 to Fig.25 and Fig.61 to Fig.61CN, further with Fig.97.

*Fig.l6 shows an oblique view of the cushion covered with leather cover {1} with diagonals raised from the corners {202} {shown in detail on the left) and straightened sides {203} as well as rounded corners. *Fig.l7 shows the opened cover (net) from the inside with the double-sided adhesive tapes glued from the corners {205}, folded or glued on the inside, whereby the cushion cover is pulled up on the diagonals. *Fig.18 shows a top view of the top of the cushion with curvature {lD}. *Fig.l9 shows a top view of the window * side of the cushion cover, covered by the fleece cloth

{132}, which forms the soft side of the K*LSSgns !; .the preferred structure is also used for the variants according to Fig.21 to Fig.26: {la, Ib, Ic and ld} ... ..are folded side parts that adhere to the fleece cloth {132} via mushroom tape strips {133}. * {203} illustrates the adhesive points by which the sides of the pillowcase (corresponds to the frame sides of the foil pillow) are stabilized. *Fig.2ö shows front view and side view for an optional rounded shape of the

cushion; {RB} radius, {RL},{RS}...dome curvature. *Fig.21

to Fig.26 illustrate the preferred embodiment of the cushion WITHOUT ROUNDING of the corners, and the storage of the cushion on the support surface {3} or {100}. The corners which protrude significantly after the rectangular foil bag cushion has fallen (inflated or filled with liquid) favor the tipping roller when the cushion is used as a rocking cushion; the cushion corresponds to the embodiment described in Fig.19, but without rounding of the corners; for the variant of the preferred design of an intensified rocking roller, the window opening of the cushion covered with fleece material {132} is used as the support window; special applications are described in the later part of the description of Fig.23 to Fig.25 and Fig.61 to Fig.61CN, further with Fig.97, whereby a fine felt-cellulose mixed fabric with an alternative further cover made of felt is preferred as the cover material.* Fig.21 corresponds essentially to Fig.19, but without rounded corners (after folding over the side parts {la, Ib, lc, ld} not yet glued {300}. On the left in Fig.21 the top view of the cushion is shown. {301}...s represents the outline of the side parts not yet folded over (without pulling up the diagonals); *Fig.2Id...version with leather saddle blanket inserted in the trough (83), whereby the cover is made of · mixed fabric cellulose+felt; trough (S3) is created by measuring the filling pressure of the cushion in relation to the shape-giving border by the cushion cover, (cf. previous part of the description and embodiments described below and Fig.61 to Fig.61CN). *Fig.22 illustrates the opened

Pillowcase with over
Fleece fabric underside {132}; below is a side view of the finished cushion with dimensions and a hand placed on it, which rocks the cushion towards the keyboard {§} (KLT. ...Velcro fastening

fastening = rocker line, 3 support surface). Fig.23 to Fig.25

see later part of the description {described together with Fig.61 to Fig.61CN. *Fig.26 illustrates how, for the previously described embodiment, the protruding corners of the cushion are decoratively covered with hollow cones {95}; {96}...double-sided adhesive tape for attachment.

*Fig.27 illustrates an option; UQi *d5ar* the .,*...*

Support plate {3} of the cushion can be rotated relative to another support and the cushion can be placed with its fleece underside {132} either directly or via another rocker band intermediate layer (see right) {12} on the support surface {3}; rocker band intermediate layer also with corresponding mushroom band {32bd} and fleece band strips {132b} for direct insertion between mushroom band {32b} of the cushion support and fleece material of the cushion underside {132}); furthermore... {40} ..- fleece band strips placed on mushroom band strips and removable again if necessary to cover unused adhesive surfaces. *Fig.28 shows a top view of the rail guide {99} placed in front of the keyboard {8} with; {39}..plugs or fitting pieces inserted into the groove ends, which prevent the gliders from slipping out of the groove; furthermore with an optional rail guide, where the sliding groove towards the middle of the alphanumeric keyboard {m} is slightly curved to the distance of the keyboard front, with the purpose of compensating for the shortening of the distance between the fingertips and the corresponding rows of keys caused by an angled position of the hands or the shape of the keyboard. *Bottom left is an option shown of how, if necessary, the cushions attached with Velcro can be adjusted using a cross-laid Velcro/loop tape connection: the rocking line {4öb} of the cushion adheres to {4Qa} of the support surface; similarly, the rail guide can be attached to a surface on the keyboard with Velcro, or fixed directly to a common support surface {9}, or just placed loosely in front of the keyboard without using another support surface {9}; {34}.... symbolizes a coil that is provided under the cushion on the cushion pad, or when using a rail guide, on the bottom of the rail guide (or also on the slide plate, see later) and that senses the eddy current losses generated by a piece of metal (e.g. sheet metal foil) in the air cushion for the purpose of locating the deformation of the cushion cover by the hand placed on it, as described in detail below for Fig.48 and Fig.54.

* Fig. 29 illustrates a wide range of

«·· · · ·* *** game using the control of cursor and image functions by the cushion movement already explained at the beginning with the optional use of a sensor coil {34} for generating the activation signal and using the length measuring system to determine the displacement path of the cushion, e.g. the right cushion. Computer mouse {43} and keyboard connection are looped through {96} via the housing {41} flanged to the right front side of the rail guide or led to the port connections of the microprocessor, which carries out the switching function; where: {42} ...computer connection of the keyboard and {44} computer connection of the mouse. The switching of the input functions concerning keyboard and mouse takes place, as already explained above, via the activation signal, whereby when the activation signal is switched off, the computer keyboard and the mouse perform their function directly, while when the activation signal is switched on, the cursor control or mouse signal generation takes place via the cushions. As an option, for example, a mode can be provided which can be configured via software or switch position and which controls either just the cursor functions, just the mouse functions, or both via the cushion input. *In addition to the multitude of control options, the following control is particularly preferred: * When the computer is switched on {applying the supply voltage to the electronics housed in the housing {41} of the rail guide), the microprocessor software starts with a status which assumes that the hand is not resting on the left cushion, which can optionally be used to calibrate the evaluation. The same applies to the electronic scales in the later parts of the description which work according to the same sensor principle and which control the adjustment of the hand pressure by regulating the level of an additional armrest (implemented by another rear cushion).

*Furthermore, every change in the detection signal in coil {34} is evaluated as to whether the hand is pressing on the cushion or is being lifted off. Each time the hand is lifted off, a time is started which asks whether or not a function control key on the keyboard has been pressed within this time. In addition, the reverse trigger sequence can be queried as a pre-trigger function, whether or not the hand was placed on the cushion within a certain time immediately after the relevant key was pressed, in order to avoid overlaps in the evaluation. *If this is the case, the electronics switches to cushion input, whereby the key pressed {e.g. ^J 'X/Y" key for coordinate positioning or "<>" keys for image key function) corresponding modes can be carried out, e.g. control of the XY coordinate movement using the* mouse function, whereby for a cushion displacement of the right cushion, the X/Y keys are pressed alternately with the left hand and incremental pulses corresponding to the displacement path are generated, which correspond to the path traveled by the cushion and act on the X movement or Y movement of the image control function in accordance with the sign to simulate key presses or mouse signals. *To switch on the activation signal, it is sufficient that the relevant hand (e.g. left hand) is lifted immediately before pressing the key, whereby the hand can be placed back on the cushion after pressing the key and the activation signal remains switched on until a switch-off condition for the activation signal is recognized. * If, on the other hand, no key or a key other than the one provided for the function control keys was pressed, then original mouse function and cursor input function are retained. * If the function control keys provided are pressed with the activation signal switched off, ie the hand was resting on a pad when the key was pressed, then the key code is used normally by being passed on to the program via the looped microprocessor circuit of the keyboard connection. In Fig.29 "also mean: {98 a,b,c,d}... support elements or

Sliding elements of the carriage for the length of the rail guide. *Fig.3 30 to Fig.36 illustrate the design examples of the rail guide already discussed at the beginning, Fig. 37 to Fig.43 the explanation also anticipated in the previous part of the description for a path-dependent rotation option of the cushions and, independently of this, or as a supplement, the preferred curvature of the rail guide. * Fig.30 illustrates the embodiment already discussed above with sliding elements fixed to the underside of a carriage plate and a rail guide in which only one sliding groove {106} is provided, in which a single sliding element {98} slides displaceably and rotatably and at the same time forms the pivot point of the carriage {100}. The carriage is supported by further sliding elements {e.g. runners 101} on the rail surface (ruler surface of {99}), which, as shown in Fig.30c, can be designed identically to the sliding element of the pivot point {98}, but are not directly guided by rails. *The angle of rotation is limited by a strip {102} attached along the sliding surface. As shown in Fig.3öa, in addition to an injection-molded version, the rail can also be made from separate materials (wooden profile {103} with attached strip guide {103}) and attached PVC strips {99}, in contrast to Fig.30b using two plastic ruler strips {99} with a steel plate underneath, or a completely injection-molded plastic version, or a laminated cardboard underneath {103}, with the edges of the cardboard being covered by the laterally raised wooden strips {102}; from the top view, only the PVC rail strips ({99}... made from one piece or optionally raised by wooden strips placed underneath (cross-hatched), see dashed horizontal lines in the^ profile according to Fig.30b) and the wood are visible, whereby the cardboard underside, which is covered with paper ■*■ plastic film, is still printed with information. *The side frame {102}, which in the longitudinal direction of the rail guide also forms the stop for the support elements {101} when the carriage {100} is rotated, stops at its

on the front broad sides, the end fitting pieces (e.g. also made of wood, see {39} in Fig.29) which are inserted into the ZFull-running rails *\ and can be removed laterally, as will be described in more detail later for Fig.71a, Fig.71b, and Fig.71c, whereby the sliding surface (ruler) is enclosed on all sides by the frame (e.g. wooden strips) and has insertion slots on the broad side for the insertion of the sliding elements of the slide plates (with the end pieces removed). . *As shown in Fig.30a to Fig.30c, by appropriately determining the distance between the underside of the slide {100} and the surface of the sliding ruler {99F}, the height of the guide sliding element {98} guided on the rails is such that the guide sliding element is only guided in the longitudinal direction and does not rest on its upper and lower plate surfaces, ie does not provide any support. Since the underside of the supporting additional sliding elements tlöl} only have a sliding and not a guiding function, the friction is reduced to a minimum. *However, if the preferred length measuring system using a rail-guided slider is used for capacitive length sensing, then the height of the guided guide sliding element is selected so that the upper or lower sliding plate of the sliding element rests firmly on the surface (top or bottom) of the rail during sliding, which is reinforced by spring force if necessary (cf. Fig.50).- *Further meaning:{132+32}... .. fleece underside of the cushion {!} placed on mushroom tape.

*Regarding Fig.31: if necessary, the embodiment shown in Fig.30 can be modified in such a way that a second sliding element {98A and 98B} slides in the guide groove, whereby the carriage is secured against rotation on the one hand, and on the other hand * has minimal friction. Furthermore, another proposal for closing the guide groove by means of plugs {107} is shown (in addition to the insertion of

·

fitting pieces, cf. {39} in Fig.29). * _i .|'ig{32 "v^rasaschauMcht an embodiment in which the coordinate guidance is via cross slides, so that in addition to the slide guidance of the first slide there is also another cross-guided slide. Furthermore, for the embodiment according to Fig.32 a parallel rail guide (tangentially parallel) of two guide grooves is provided. It is evident that the variants described for Fig.30 and Fig.31 can also be combined as a cross slide, whereby, for example, the lower slide is guided as a longitudinal slide parallel to the keyboard so as to prevent rotation and the upper slide is guided in line with the keyboard and allows direct rotation. *The slide guide according to Fig.32 KJ is identical to the embodiments already described, except that it is carried out by parallel guide grooves in which the guided sliders also support the slide plate, i.e. slide with the underside of their upper slide plates on the rail surface, which is advantageous for the variant with a preferred length measuring system, for example. As an alternative, however, sliders could also be provided for separate, non-rail-guided support of the slide plate, see Fig.30c. * The meaning is: {100} slide plate, which corresponds to the support surface of the cushion and is guided over the further rail guide {99B}, which is also the slide for the first {lower) rail guide {99A}. {99A} is guided or positioned parallel to the keyboard front. * It is evident that the slide guides described from Fig.30 onwards can also be used independently for any other application, regardless of the subject matter of the invention of a cushion for hand support, in particular with the length measuring system described below and a power supply control signal rail, which is also particularly popular as a reliable, low-cost solution. For such other applications, the improvement in the accuracy of the rail guide is interesting, which is why those sliding elements which, by means of sliding groove guides in an optional design, provide an anti-twisting protection of the

Slide plate, braced against each other by means of springs (e.g. as shown in Fig.32 top left, cushions in front view), by a flat spring {200}, under which the sliding elements are glued and which is attached with its upper side to the underside of the slide. * Fig.33 illustrates a profile section for the variant in which the slide plate can be rotated directly on the rail guide, with profile {{103}, wood) according to Fig.34, {99} PVC strips. * Fig.35 illustrates a profile section for the variant in which the slide plate is guided in a torsion-proof manner, with profile ({103}, wood) according to Fig.36, {99} PVC strips. * Fig.37 illustrates the optional stretch control {S} of the cushions over the length of the slide guide {in the middle M); {KBS}..-..keyboard side, {OPS} operator side.

*Fig.38 relates to a variant in which the angle of rotation is adjusted over the displacement path of the cushion in accordance with the curved shape of the rail guides or the width of the guide groove, in that the axis of rotation of the rotatable cushion support is guided by a guide along the center line of the rail guide via a rotary lever. This rotary lever has sliders at both ends of the lever which rest against the inner edges of the guide, and the rotary lever is rotated by changing the distance between the inner edges of the guide (i.e. slot width). The rail guide corresponds to Fig.37, whereby the middle groove is kept wide enough that the sliding elements (opposite each other) slide on one of the two groove edges at both groove edges and, by means of a lever connection, adjust this lever {77} which is mounted on an axis {82} depending on the groove width {{67}, {68}, {67}). The axis rotates the cushion support. *Fig.39 shows the axis {82} of the cushion support, which is connected to a foil {81} with pressing disks, the underside of which is used as a sliding surface, the cushion

rotation. *Fig.4Ö illustrates a variation in which the rail guide is installed in a recess in front of the keyboard, as can be used, for example, on pull-out keyboard supports. Preferably, the rail guide is accommodated in the recess in such a way that the height of the cushion is matched to the height of the keyboard and can be covered by a flat cover, which forms the usual cover support ({8c} dashed line) instead of the hand cushion support and covers the hand cushion support. * Fig.41 illustrates a variant in which metal strips placed on the rail guide, which are contacted via contact connections K1 to K4, perform a capacitive length coding, see also Fig.49 and Fig.50. Furthermore, a rotatable cushion support {81} with spring {79}, {80}, which presses against the sliding element {98S} for lever adjustment of the rotation axis as a restoring force (see {F)} in Fig.38. Furthermore, {76} sliding elements which take over the rail guide of the slide plate, see also Fig.38. * Fig.42 shows the rail guide {99} with optional housing {41}. * Fig.43 shows the manufacture of the return spring, cf. {79,80} in Fig.41. * Fig.44 shows a proposal for a cable drive {54, 45, 46} for the slides. *Fig.45 shows a proposal for detecting the angle of rotation using spools of the cable from Fig.44, whereby the radial twist of the cable pulley winds up a spiral spring, at the ends of which the inductance is measured as a measure of the twist, e.g. according to the resonance principle via an oscillator circuit (OSZ) or also as a damping variable, whereby the spiral spring is then damped by a metal disk {disk, Fig.45} placed parallel to it and the damping changes due to the changing effective coil size. {52,53} ...switching points of the oscillator for the parallel resonance circuit consisting of ' inductance of the spring and capacitor C. *Fig.46 shows the cable drives for the variant according to Fig.44. * Fig.47 shows the attachment of the cables to the carriages as in Fig.45. * Fig.48 illustrates the preferred principle for detecting a signal indicating the rocking motion of the cushion or the deformation of the cushion.

^ 5kk i

Depending on the requirements, it may be sufficient to attach a sheet of metal foil to the inside of the air cushion on the floor {33}. For alternative evaluations, a sheet of metal strip is attached to the inside of the top side {33B}, which is bent downwards, for example (e.g. also for measuring the contact pressure). For both variants, an air coil is placed under the cushion support, or under the rail guide at the point where the input option is provided by the cushion in question (e.g. on the far left, see generation of the activation signal above) , e.g. in a flat cavity on the underside of the rail guide support (see also {34} in Fig.32). If the cushion in question is located above the air coil, this is subjected to a fibrillary current damping by the piece of metal glued to the cushion, which can be reflected, for example, in a damping of the resonance oscillator.

&iacgr; amplitude becomes noticeable. The evaluation is carried out

for example, so that the signal of the damped parallel circuit oscillator is fed to a voltage-dependent oscillator (VCO), the frequency of which is fed into a microprocessor via averaging or by prior rectification at the input of the VCO, which forms the change values for the respective damping change of the coil, whereby these change values indicate on the one hand whether the hand placed on the cushion is rocking back and forth, i.e. tapping, and on the other hand the sign direction of the respective change or maximum sampling indicates whether the hand has been lifted from the cushion. If so, then a mono time starts during which it is tested whether a corresponding keyboard signal is present at the microprocessor (uP) (no longer shown in Fig. 48). If several sensors are required, the use of parallel resonance oscillators for the supply circuit of the sensor coils proves to be very advantageous because of the direct filtering effect for different measuring frequencies of the coils. Furthermore, {35} supply inductance, ditto capacitance, which is included in the resonance circuit inductance of the coil connections {34, 36} and the parallel resonance circuit capacitance. The described adaptation of the damping

measurement at the input of a micro-pA>z^Jssoi;§· means* can also be used for the voltage divider measurement described below for Fig.51, in addition to the other circuit suggestions for capacitive scale measurement.

*Fig.49 and Fig.50 explain the principle and examples of implementation for the preferred length measuring system based on the principle that metal strips (e.g. sheet metal strips) run on both sides of the slider guide (e.g. the guide groove) and the metal strips are capacitively bridged by an electrode surface applied to the slider guided along the slider guide, whereby the capacitance measured between the metal strips is a measure of the movement of the slider along the slider guide (capacitance between electrode connections K1 and K2). *In Fig.49 top left a section of the rail guide {99} is shown with sliding foils or very thin PVC strips (which are shown transparently in Fig.49), whereby under the PVC strips the sheet metal strips {69A, 69B) have a fraying towards the inner edge of the guide slot in a sawtooth pattern. The sawtooth pattern enables the direction-dependent evaluation for the derivation of the incremental pulse corresponding to a sawtooth by means of edge differentiation. The rise differentiates the direction of movement, whereby the periodic sequence of spontaneous increase in capacity and slower decrease corresponds to the direction towards the trailing edge of the sawtooth, and the sequence of spontaneous decrease in capacity and slow increase corresponds to the direction towards the flatter rising part of the sawtooth. *These frayings or surface recesses in the sheet metal strip are bridged by the sliding element {98} sliding in the guide slot, the ·&diams; underside of the upper sliding plate of which presses against the sliding surfaces of the PVC strips on the one hand, and on the other hand has a metal electrode on the underside that bridges the guide slot or the sliding groove - *Fig.5O

'^2S> "-"AuAV·"..

shows such a sliding element (
with a countersunk groove {73} on the underside of the upper sliding plate, in which this metal electrode is embedded as a narrow strip. This version is well suited if the sliding element slides non-rotatably in the guide groove of the rail guide, e.g. if a parallel guide with two guide grooves is provided, cf. left illustration below in Fig.49. However, if the guided sliding element also forms the axis of rotation, then a circular electrode is embedded in the sliding element instead of a strip {{98a in Fig.50, shown in dashed lines); Furthermore, this version provides that the guided sliding element is mounted on the underside of the carriage {100} via a spring (leaf spring {400}) which ensures that the contact of the sliding element is pressed against the sliding surface of the rail guide, whereby, depending on the direction of the spring, this can be done as a pressure force, or also as a pulling force if the capacitive contact is arranged on the lower plate {98c} instead of the upper plate {98a}, i.e. on the anti-removal device of the sliding plate (also on the inside) (option), whereby the contact plates {69A, 69B} are then located under the PVC strips of the sliding support of the other sliders. This version has the advantage that the sliding surface can be kept thicker on the upper side. The principle for scanning the capacitive scale can be seen in the illustration bottom right in Fig.49. * Furthermore, Fig.49 shows a top view of the coding plates with a front view and an enlarged view of the front view with the sliding element inserted. *The contacting of the plates {69 A, 69 B} is carried out with the contacts K1, K2 on the front side of the rail where the housing for the evaluation electronics {41} is flanged on. '

*Fig.51 shows the replacement circuit diagram to explain the measuring principle: * {Cp} is the capacitance as it would be without the bridging electrode of the slider between the rails

prevails. {Cgi} is the additional capacitance through* the bridging by means of the slider electrode, whereby the capacitance {Cgi} varies depending on the effective cross-section of the electrode sheets bridged in each case, corresponding to the sawtooth shape. *For each sawtooth flank, an incremental pulse is then generated via the evaluating microprocessor circuit to control the mouse or key functions, whereby intermediate interpolations and the determination of the number per length traveled can still be generated by software, by evaluating the diagonal flank of the sawtooth coding of the scale ( _e.g. superimposition or fraying of the diagonal flank by further sawtooth coding).*As shown in Fig.51, the rail capacitance is connected with a series capacitance Ck to form a capacitive voltage divider, the tap of which corresponds to the capacitance curve of the length scale {e.g. via VCO, voltage-frequency converter to a microprocessor, see above). In addition to the possibility of using the sinusoidal voltage of a parallel resonant circuit as the supply voltage, the measuring capacitance can optionally be measured via the deformation of the square-wave supply signal using a compensated voltage divider (Rl, R2) with the measuring capacitance as part of its compensation capacitance, whereby monostable time windows are triggered by the square-wave edge of the supply signal; blanking signals (at coincidence gate MCl...MC3) blank out a window comparator signal which corresponds to the comparison of the square-wave supply signal and the signal tapped at the voltage divider (adjusted by level converter A, VCC). *If the corresponding test times (tl...t3 of the monostable stages) are exceeded, the corresponding capacitance value is sent to the microprocessor inputs via MCl...MC3 at the coincidence gate. *Fig.52 shows on the left the microprocessor circuit with further signal connections {P1,P2,P2} for integration into the explained functions and on the right an alternative for generating the activation signal for switching to the pillow input function: Instead of detecting whether the hand rest is on the pillow, there is a signal on the front side of the rail

an end stop contact is provided _{ «^derj gegön.eme ·· *** contact spring presses and switches on the activation signal as long as the contact spring is pressed by pushing it with the cushion, this means: {107} each contact spring, 98x sliding rail with electrically connected stop contacts to the contact springs, whereby the contact connection switched on at the fastening ends of the contact springs is conductive when the slide hits the springs, otherwise it is interrupted. * Fig.53 shows a variant in which the rail guide has a cavity {104} on the underside for accommodating the sensor coil {34, option} or an alternative spring plate {106}, which bends slightly when pressed by the land on the cushion and carries out a damping variation on an air coil underneath, for the purpose of generating the activation signal for the cushion input function. * Fig.54 shows a variant in which four strips of sheet metal foil are attached to a cushion according to coordinates, each of which has an eddy current damping for four air coils underneath, so that coordinate-based pressure on the cushion surface allows coordinate-based signal detection, or coordinate-based displacements of the cushion can be sensed (see later part of the description). Instead of the damping sensing, for example, a direct vectorial pressure sensing can also be carried out using semiconductor sensors in order to obtain a coordinate-based directional value, in particular the follow-up control of a zero-force compensation for the cushion movement.

*Fig.55 shows the corresponding circuit (Fig.54) with an LC parallel resonance oscillator of different frequency for the damping measurement, furthermore with optional connection of bus signal rails to the microprocessor, which would make it possible, for example, to accommodate the oscillator circuit with the coils directly on the slide plate, or to provide electrical drives on the slide plate together with control signals. In Fig.55

three signal tapping rails are provided: for the power supply, the two rails VCC and GND, and a serial bus signal rail to be used bidirectionally. Alternatively, the bus signal rail can be modulated into the current signal rail, e.g. by frequency coding or modulo-2 coding of a data signal, from which the supply voltage is then recovered by rectification and the time windows for the bidirectional connection of serial data streams (according to a protocol) are bridged by a capacitor on the supply voltage (see also later part of the description). *Fig.56a, Fig.56b, and c show suggestions for the signal feed on the preferred carriage: * In Fig. 56a, the rail guide has three parallel guide slots, of which the two outer ones are used to guide the carriage and for signal guidance and the middle one only for signal guidance. The signal is transmitted via contact strips {BUS, GND, VCC} inserted into the guide groove on the bottom, which are picked up by a contact spring sliding on it in the guide groove as shown in Fig.56c or, alternatively, by a ball looped on a short metal chain {Fig.56b}; in Fig. 56c,b, mean: {64}+{100} circuit board placed on the slide plate; the circuit board contains all the independent components of the slide, e.g. inductors {cf. Fig.54 with {IC}..., outline of the Lissen cover) or drives. *Of course, when using the cross slide version, the contact rails of the upper slide can be looped through to the lower rail, whereby the slide can be used in any position using the contact spring {Fig.5c} and, if necessary, by placing the sliding elements, which support the slide at its lower width, on springs (see sheet above), the slide guide can be braced and thus an astonishing level of precision can be achieved for little effort. * Fig.57 illustrates an example of how to raise the keyboard, especially if there is no table for the keyboard.

e.g. according to Fig.40, is provided..*Dla ob^rfe.Äöb. »zetsgi like on the underside of the keyboard along the front line on both sides of the keyboard mushroom tape strips {40b} are glued. Onto these mushroom tape strips {40b} aligned lengthwise of the keyboard, fleece strips {4öc> are attached and folded along a fold line {40d} facing the back of the keyboard, so that after folding the fleece side again rests on the mushroom tape {40b} for the further attachment of a Velcro fastener, {74b,62}, and is used for a further Velcro fastener on a block to raise the keyboard. By grading different block heights which are layered with fleece tape/Velcro fastener connections, different heights of the keyboard can be set, especially if the individual height elements are each doubled as a multiple of 2, ^e.g. i.e. they are graded in binary. The back of the keyboard is also raised using such blocks. As a further alternative, a fold-out row of feet with different setting heights is planned for the underside of the keyboard.

*Fig.5S above illustrates the placement of a cover plate over the existing Velcro fastener of the support surfaces of the cushions, whereby the cover plate {300} is placed on the Velcro fastener instead of the cushions in the respective edge position (right outside) of the slides limited by the stop, so that the plate's mobility is fixed. *Fig.58 below illustrates that the rail guide can also be bent to adapt to modern keyboard shapes (cushions {1} and {K2}). * Fig.59 illustrates the design of the air cushion as a hand cuff with Velcro fastener 199A, whereby this cuff can be used not only independently, / but also in particular in conjunction with the cushions for hand support. *Fig.6ö shows an example of an autonomous drive supplied via the described power supply and control signal supply rails

the rail guide, which is also* for 2

Cross slide (looped from the lowest rail to the highest slide). *A motor {500} is provided on the support plate, which drives a roller, e.g. rubber roller {700}, via a belt drive {600}, which slides on the rail guide {through window {800}}. As an alternative or addition to the rubber roller, however, a toothed wheel can also engage in a rack groove on the plastic rail surface, which runs alongside the sliding surface of the sliders, whereby this rack groove can also be produced, for example, by hot stamping. *This gives a rail guide that is not only ideally suited for the purpose of cushion displacement, but also for stand-alone applications. *£Another embodiment is to enable the cross slide to be moved despite the mechanical drive being blocked, by moving it manually using a regulated follow-up control: *For this purpose, a further cross slide, which has a small displacement play (VSP) and can be manufactured in a preferred rail guide, is placed on the top slide plate of the first cross slide, or the displacement path of the first cross slide is directly provided with a displacement play (VSP) of the slide guide, whereby the displacement play is sensed by a sensor and used for motor-driven readjustment of the displacement of the first cross slide. Simple spiral springs, for example, can be used as a sensor to pre-tension the slide to a central position of VSP and their inductance can be measured. If the slide is moved manually in a coordinate direction, which is determined by detecting the change in inductance corresponding to the centering springs, then adjustment is carried out until the centering springs again have their value which corresponds to their rest position (in the middle position). Variants for the sensor are described below. *Another variant is to move the drive wheel of the feed into a locking lifting position using a lever {900} with a spring {1000}, in order to make the feed optionally movable by hand.

*The preferred rail guidance can be found in ^'jod^r JLagja* *··· ***·

be used, where necessary, the

Sliding elements are braced against each other or against their support surfaces by spring force (cf. leaf springs {400} in Fig.50 or {200} in Fig.32). A preferred application is to use the cross slide guide in conjunction with an image processing system which assembles the individual image sections from the image information, whereby this can be done not only for image scanning, but also for extending the travel path of precision machines, if, for example, the very precise travel path of the precision machine is correlated by the respective adoption of its exact measured value ä_ via the image content of the image scanning.

-33-

Further design variants are described below based on the figures for Fig.23 to Fig.25x and Fig.61 to Fig.61x, which mainly relate to the preferred variant for better support of the rocker roller, in which the hand is placed directly or at least in the immediate vicinity on a longitudinal fold (or on a longitudinal seam) of the tubular film cushion. *Variants according to Fig.23 to Fig.25e relate to an optional tensioning device for the cushion to regulate the air pressure, which is suitable for both horizontal and vertical positions of the cushion: *In Fig.23 the cushion is shown in an oblique view from below, with the depression {83} of the cushion's long side (with the longitudinal fold of the slightly inflated film tube underneath), which is used for hand or wrist support or even arm support. Another application would be hand support when doing handicrafts. *The tensioning device consists of a pressure plate {93} with a flanged clamping screw {84}, which can be moved or rotated by means of a ball joint connection at the screw end, similar to a standardized clamp, and presses against a flat side of the cushion, whereby the plate is supported by a thin plate {3} (e.g. made of plastic), in the middle of which the screw is inserted into a thread, whereby the plate adheres to the cushion (e.g. to a fleece window {123}) and is arranged above the pressure plate, optionally stabilized with a U-shaped or angled holding device {{8 85}..made of plastic or bent sheet metal}, into which the cushion is inserted and the screw is inserted into a window {86} {with a longitudinal slot {88}), which ensures that the cushion can be rocked towards the keyboard and thus the mobility of the clamping screw, so that the rotary knob {84} protrudes and the holding device - ' for example also attached to the Velcro fastener {mushroom fastener {32b}) of the support plate {100} via the underside of the loop tape strip; *In a further option, the pressure plate {93} is slidably embedded in plate {3}, whereby in further development the pressure plate can be centered {ring or individual Velcro fasteners

blocks 93PZ), which are attached to a

adheres, the pressure plate (93) is centered - In this variant, the plate {3} does not adhere directly to the cushion via the Velcro window, but via a tensioning band which is attached to the narrow sides of the plate using Velcro and is looped over the air cushion within the cover; the pressure on the cushion is therefore also applied via the band, cf. Fig.25c and Fig.25d. *Fig.24e shows the pressure plate {93} in detail, consisting of two disks {93A} and {93B} glued together with a flat countersink {93f} and {GH} and a cap {89b} which snaps into the hole in the flat countersink, onto which the threaded rod {89} secured with lock nuts {89b and 89a} presses in a rotatable manner within the pressure plate. *Fig.24d shows an example with spacer adjustment GS for better cushion adjustment with'KLTÄ...Velcro fastening of the plate3, see also Fig.24c. *A further development variant is to provide a deflection (angled gear deflection or transmission 84 AT Fig.25c), with the optional possibility of providing a motor drive instead of the manual drive of the clamping screw; an alternative for the deflection is to carry out the tensioning with a guided inclined wedge surface. *The differences between Fig.24a and 24b concern the mounting of the threaded rod {89} in the holding device {in Fig.24a in the slot {86}, in Fig.24b ^P in the thread {85}. *Fig.25e shows an oblique view, Fig.25d details. *Further meanings in Fig.23 to Fig.25e: *BDW...tensioning strap, ASA..cut in the cushion cover for the tensioning strap, H... .hand or armrest, 132...fleece surface, 1...leather cover of the cushion, 85K...angle, 85 support device (or at the same time slide plate {100}), WlP.. .rocking Velcro connection with @... rocking angle, 84... FL optional wing screw, Y.. .longitudinal direction to the ■·' keyboard front {X...transverse direction); BDW-132BD...through hole of the strap with tensioning screw (or threaded rod G) pushed through in Fig.25d; 132BDS Velcro connection of the tensioning strap on the cushion cover in Fig.25c.

- 35 -

*Fig.l9a and 21d, Fig.21c, entspreci^p, b^rei·^ £f»-~~ []* described designs according to Fig.19 and Fig.21, with the extension option that a leather surface (LD) like a saddle blanket is placed on the hand or arm rest area (H on the wrist or behind the wrist) formed by the depression (cf. 83, Fig.24) on the upper longitudinal seam of the cushion. *To support the rocking behavior generated by twisting the hand rest of the cushion, the fleece side (132 in Fig.21d) is preferably used as the top of the cushion. *The cushion cover is made of fabric, e.g. of particularly thin felt-cellulose fabric, and covered with another felt material. The thin fabric cover adheres with its folded side parts (la, lb, ic, id) directly to the fleece cover 132, with the other, thicker fabric cover adhering to the outside of the folded side parts. Adhesion is achieved by means of Velcro, with fleece (e.g. velour) being used for both adhering fabric sides for ease of manufacture (e.g. ironing on) and being attached using Velcro strips coated on both sides (e.g. using double strips glued together with self-adhesive tape). *Another variant in which the cushion cover is made entirely of fleece material is shown in Fig.7öa, with a rocker line (Velcro C adheres to slide plate 100) and a hand rest attached with Velcro (b), with another fabric cover being able to be attached with Velcro over this fleece. *Fig. 61 shows an oblique view of a preferred embodiment: *100 slide surface with Velcro support strip (KLT) for placing the rocker cushion (on the side next to the keyboard front) according to a fleece strip on the underside of the cushion as a rocker line, see KLT Fig.62 and and for placing the strip HSL on the user side to raise the cushion, also via a fleece underside of the strip as an adhesive surface. HSL...Leather-covered strip made of hard foam, whereby the fleece underside also adheres to the Velcro strip. For the purpose of distance adjustment (VHSL) regarding the keyboard front line, the

Velcro support strip (40a) in relation to the rocking line aligned with the keyboard front and the strip (HSL) crossed over (see also in Fig. 72b: HSL-KLT...adhesive surface of HSL, ditto WKL-KLT for cushion = rocking line). *Furthermore, in Fig.61: In...centre line of the trough, which results when the hand is placed on it due to the low inflation pressure of the air cushion. 203...adhesive points of the fabric cover with the cover pages la, Ib, Ic

and Id (cf. 300 in Fig.2Id) ). *Angle ß Angle of attack

by which the rear (facing the user) long side of the cushion is raised by the HSL bar underneath. By adjusting the distance of the bar (HSL) using crossed Velcro straps (40a, 40b) as described, this angle of attack (ß) can be adjusted to suit the user. *Fig.61b shows another variant with a

Bubble wrap (LKBL, packaging material), whereby additional plates, e.g. made of cardboard (PLK) Fig.61c can be placed underneath. Fig.6IcN shows a variant in which a narrow granulate cushion (GNLT) is used as a base for the hand rest (sealed in another foil bag floating in liquid, see also later part of the description). *Fig.72a (see also Fig.6IcN, oblique view with detail GNLT) relates to a variant in which the long side of the cushion, which is opposite the raised supported side, i.e. is not supported and therefore lies lower, is supported with a stop surface (WKL) with the following variants: that the stop surface is springy, the stop surface is designed as an angled strip (e.g. plastic) in which one angle surface rests on the support surface of the cushion and the other angle surface supports the cushion movement in the direction of the keyboard front, that the fastening of the cushion or cushion cover is carried out on the inside of the angle along its bending edge, e.g. Velcro strip connection. Depending on requirements, angle WKL or support strip for raising HSL can be provided on the user side of the cushion or on the side of the keyboard front. *Fig.72b, Fig.72c, Fig.72d relates to a

- 37 -

Version where the Au
for the hand rest, terraced, layered bags (GNTO to GNLT2 Fig.72d} _/ which are filled with granules, whereby in a further development the bags have different lengths with recesses (windows) in the layering, so that a shape corresponding to the hand (or arm) shape is formed over the surface (FB) of the hand or arm rest. Fig.72B shows a top view with slide plate 100 (sliding skids 101 and

Sliding surface 99), WKL...support angle, 98 pivot point,

m...center line.

*Fig.62 shows a side view of the cushion placed on the slide plate (100, with guided pivot point of the guide element 98), whereby the long sides of the slide plates on the side facing the keyboard front line are approximately congruent with the edge of the rail guide. A further development variant in which the side of the slide plate facing the user protrudes and another cushion is placed behind it is explained in the later part of the description ¹ . *KLT... .preferably on the front of the cushion, which is immediately in front of the front of the keyboard (8), a Velcro strip running in the lengthwise direction of the keyboard as a rocking line. *83S...formation of the laid-on piece of leather (LD) in a hollow; the piece of leather is attached, for example, via Velcro fasteners at certain points or via an adhesive strip running lengthways along the keyboard to the top (KP), or just next to the top (e.g. below) of the hollow on the top of the cover (cf. {132} in Fig.61) and hangs down on both sides of this fastening strip (cf. also thick dashed line LD on the right hand side of KP). *The * use of a Velcro fastener makes the leather cover replaceable, which is practical for hygienic reasons and for the further variant in conjunction with an additional rear cushion. *As a further detail,

which is optional, a leaf _spring is placed underneath the cushion which relaxes when the hand is lifted. This changes the damping {e.g. left hand of the rail at the level of the X/Y keys on the outer edge to the left of the keyboard) of a sensor coil attached to the underside of the rail {cf. previous part of the description) to generate an activation signal for cursor movement by moving a cushion along the rail {e.g. the right cushion, cf. previous part of the description) or to measure the pressure of the hand resting on the cushion, whereby the variant shown in Fig.52 can also be used for a rear cushion for arm support in addition to a front cushion for the hand rest {cf. later part of the description, automatic adjustment of the height of the cushion). *See·. also previously described length scanning using capacitively coded scales (e.g. according to a sawtooth pattern) symmetrically on both sides of the guide groove and their capacitive bridging by an electrically conductive bridging surface on the guide element of the carriage, whereby the two connections of the capacitive scales are connected, for example, as a capacitive voltage divider with a further series capacitance and the capacitive voltage divider ratio is measured by means of an fed-in oscillator voltage to generate the incremental pulses corresponding to the length displacement of the cushion (evaluation see as already explained, with rectification and/or averaging via a voltage-controlled oscillator, VCO). *Fig.63 shows the weld seams of the bag (20... wide seam, 28.-. end seam, 55 long-side tube folds of the film tube). *Fig.64 shows a front view of the cushion. *Fig.65 illustrates that when the slides are aligned parallel to the keyboard front line (not twisted), the cushions are placed slightly twisted (cf. §-fix) over their Velcro fasteners.

*Fig.66 shows a variant in which^ninterdchifedlicho'; : Levels (relative to the sliding surface) of the slide plates allow them to be pushed into one another, in that the slide surfaces can be pushed into one another at the joints, or one slide surface can be pushed under the other slide surface; (lOÖÄ).-.is a support surface of the cushion and is used directly as a slide plate, with the further support surface of the cushion (1ÖOC) being placed on a smaller slide plate (lOOB) underneath via an adhesive tape connection or Velcro connection (lööf). *As Fig.67b shows, in a further, preferred embodiment, a bevel (AS) is made on the slide plates on the long sides facing the keyboard, whereby this is done in such a way that

that when the slide plates are turned to the respective stop positions, the bevel is parallel to the longitudinal front of the rail support surface at a distance that is as close as possible to the rail front. KLT...Velcro fasteners with VELCRO for rocker line and KLT-HSL for raising strip - *The slide plates protrude slightly at the back to accommodate an additional cushion (see later part of the description) or can also be beveled accordingly. *Fig.68a illustrates an alternative for fastening the sliders (101) or the guide element (98) located at the pivot point using a bent, punched sheet metal clip (KLM). *Fig.68b illustrates a variant with a coating of the sliders (101) or the guide element (98) located at the pivot point with a sliding film (1Ö1GL). *Fig.67a illustrates a curved design for the guide slot (X), see also other variants in the following part of the description (102a, 102b side parts with insertion slot of X). *Another alternative for the manufacture of the rail guide is, ··' a plate with corresponding longitudinal ribs made of plastic and correspondingly glued or locked sliding surfaces. *Other alternatives for the design of the foil bag cushion are; *The advantage of the foil bag cushion is that it is inexpensive to manufacture and that the material does not stretch. If stretching is desired, it could be

Material for the bag e.g. rubber ^rwnd^seiiu* Another option for the bag would be to provide a valve for inflation. *For the use of a film bag e.g. made of PÄ/PE film, in a further development it is provided that the film is coated with a noise-insulating fabric cover, for which the preferred embodiment is the fabric cover made of a fleece material (e.g. velour), as is also used for adhesive purposes for Velcro connections, in a special further embodiment so that the fabric cover is stuck to the film with an adhesive which is thermally heated by ironing when the material is stuck to the film. *5s?Further alternatives for the design of the sliding surface for the slide plates of the cushion supports in conjunction with variants for the guide are: *As a further option, the slide plates can also be guided with a guide rail that protrudes over the sliding surface (99) (as a replacement or supplement to the guide slot) along the longitudinal centre line of the sliding surface, with e.g. sliding elements guided through the rail on both sides of the rail forming the guide element. *For the alternatives described, the guide element also forms the pivot point of the slide plate, with the plate being secured against release in the guide slot by a plate of the guide pin sliding beneath the guide slot. When using a individually protruding guide rail (or guide web) with sliding elements sliding at the pivot point on both sides of the guide rail, which are a short distance from the rail and are separated and guided by the rail, the trigger protection is provided by a lateral projection on the upper edge of the rail, e.g. also by sliding plates, whereby the trigger safety can also be carried out or supported by magnetic adhesion: e.g. via a ■*" magnet, which is attached directly above one or more of the sliding elements, and magnetically adheres to an iron sheet plate, which is placed under the sliding surface. *As a further alternative, a preferred design is one in which the slide plate is omitted and the sliding elements are attached directly to the

4x · ·

are glued to the underside of the cushion. *Ii$Jwe*:5ter^r· it would also be possible to completely omit the linear guide in an individual design so that the cushions slide freely within the frame of the sliding ruler surface.

*In addition to the already proposed capacitive length sensing of the rail guide, for the variant with a guide rail, the capacitive scale in the form of a sawtooth-shaped longitudinal strip is attached to the raised sides of the guide rail and is capacitively touched by the sliding elements by means of insulated metal surfaces that are attached to the relevant sliding elements. *Further options are shown in Fig.33b, Fig.71b, Fig.73 to Fig.75: *Fig.71a and 71b relate to embodiments for the retaining device of the slide plate guide element (cf. 98, e.g. in Fig.33), whereby in Fig.71a the end strip ZPF inserted into the guide slot X has no end T-piece and in Fig.71b has such a T-piece (LA), cf. also the following part of the description for Fig.71c and Fig.81 {BND - raised band as a stop). *For the rail guide, a protruding strip (band BND) on one long side is sufficient as a rotation stop for the slide plate (100). * *Fig.73 to Fig.75 relates to the further design of the cushion support with an additional slide guide in a further coordinate direction with 99..sliding surface with guide slot for slide plate 100 and sliding elements 101; further sliding elements {G GLE) of the upper slide plate 100-0 and with sliding frame RM, !...cushion. Furthermore, in Fig.73 means: _y outsides of sliding frame RM guides sliding element (GLE) of the upper slide plate (100-0) in the direction of the keyboard. Inside the frame ^y slides one or more sliding elements (GLM) which form the stop for the movement of the attached slide in the direction of the keyboard. *As a further option, one of the sliding elements, e.g. on the

A magnet is placed on the middle part (GLM) ₇ and the inner part of the frame RM is lined with an iron plate, which forms a trigger safety device, optionally with the possibility of doing this via a guide groove. *A further alternative to this design is described in the later part of the description of Fig. 69a. *As Fig.73 also shows, for the generation of an activation signal which indicates the (brief) lifting of a hand (e.g. left hand) (in conjunction with the actuation of a selection key for the cursor or mouse function at this time interval), the spring for lifting the carriage plate (in a further variant) is arranged directly on the sliders (sliders arranged on leaf springs) (option: 1.01+40Ob) or a plastic spring sliding on the rail surface (option 400 Oc) is provided. (Lifting the slide plate with the damping plate {33} attached to the underside generates a signal at the scanning coil located under the sliding surface, as already explained in the previous part of the description). This damping measurement can also be carried out for a large number of scanning points (cf. plates 33 with scanning coils 34A to 34D in Fig.54) with different frequencies of the coil measuring signals (filtered by parallel resonance circuits of the coils), whereby, for example, the

Displacement or rotation of the cushion (1) within the frame (RM) is measured for the purpose of generating a control signal for the follow-up control of the upper and lower slide plate, or also the contact pressure of the hand placed on the cushion, as will be described in the later part of the description of embodiments.

*Fig.74 shows a further development in which, while retaining the principle, in addition to the sliding elements (GLE), which for example provide guidance on the inside of the frame, the outside of the frame sides are provided with two grooves which hold balls (KGL) which are magnetically mounted in the grooves and on which the top slide plate (100-0) rests. FE...iron plate magnetic (MAG) to GLM,

as explained above. *It is also possible to support the bottom slide plate with roller balls (e.g. spring ball bearings) or magnetically adhering ball rail or adhering balls. *Fig.75 shows a top view of the rail with the _cushion and an example of the dimensions: 2.7mm - guide slot; 7mm... rail width of the sliding surface, (optional variant: 85mm X 65mm cushion dimensions, IRUS... ruffle border, !..thin, light cushion material made of a mixed felt + cellulose, 1..bag filled with granulate); rail 540 mm long. *The lower and upper slide plates are each rectangular in shape with rounded corners. *The lower slide plate (100) has the same width as the rail, the length is covered by the ruffles of the rectangular cushion. The upper slide plate is not visible in Fig.3 and is held approximately congruent with the lower slide plate. *Fig.-24, Fig.24a,b,c,d,e; Fig.25, Fig.25a to 25e: Fig.24 and Fig.25... already explained in the previous part of the description, *Fig.25a and Fig.25b, like Fig.24a and Fig.24b, differ in the design in which the pressure rod {89} of the turntable is screwed directly into the Ü-tripod support of the cushion and in the other is only guided through an elongated hole. *Fig.25c, Fig.25d, Fig.25e concern further details for the variants described in Fig.25. Fig.25d shows how the pressure plate (93) is centered by means of a centering device (ring or individual Velcro fastener blocks 93PZ) which adhere to a fleece surface of the cushion. In addition, a band (e.g. made of fabric or leather) is pushed through (BDS) on the threaded rod G) which presses the pressure plate against the cushion (screwed into plate 3, Fig.25c), which wraps around the air cushion (or air cushion) inside the cushion cover and by pressing the pressure plate onto the cushion (via the threaded rod screwed into plate ') presses the band and plate onto the cushion, or loosens them again by turning the threaded rod in the opposite direction, whereby the pressure in the cushion can be adjusted. Fig.25e shows another variant in which the inclination of the cushion can be adjusted with a

Flight screw can be adjusted within a guide rail of a support device. *In Fig.61b and Fig.25c it is also illustrated how a drive wheel (84AT) can be flanged to the threaded rod instead of the handle (84) and the adjustment can be carried out by motor (84M) using a corresponding transmission. *Other optional further developments: Fig.60d shows a further example of an embodiment of the cushions (with dimensions entered in mm) with the detail that short seams are welded inwards from the long sides (4a, 4b, 4c), which hold the superimposed film surfaces of the bag together at these points, whereby shaping depressions (10) on the side of a dome MB (dimension 12) ensure good adaptation to the hand or arm rest.

*Fig.60a, Fig.60b and Fig.öÖc illustrate a further development variant in which a springy restoring force is generated for the rotation of the cushion, depending on whether the hand is resting on the cushion or not. The restoring force occurs when the cushion is relieved (reduction in the pressure of the hand or lifting the hand). This is useful if the cushion loses control while typing by twisting out of the hand, and is automatically rotated back when the pressure is relieved. *If the hand is resting on the cushion, then the torque of the spring force, which returns the cushion to a certain resting position (e.g. parallel or diagonal to the front line of the keyboard), is completely decoupled, and the mobility of the hand is therefore not hindered. *The technical task was solved by a special design of the guide or sliding element guided in the sliding guard of the rail surface, such that a spring-powered return torque of the slide is generated by the lever action against the guide slot or web, with a coupling of the torque in such a way that *a) a spring force acting against the support force of the hand is provided, with a spring travel which, when the hand support is removed (lifting of the

hand) increases the distance of the slide vojt.de]· Relaxation over the spring travel and *b) that the guide surface of the guide element (e.g. surface area of the sliding pin between the upper plate and lower plate of the trigger safety) has two different cross sections over the spring travel: *bl) over the section of the guide surface which is guided by the guide rail (e.g. sliding guard) when the hand is resting on it, i.e. when the spring force is tense, the cross section of the guide surface (or the sliding pin) is designed in such a way that the sliding element can rotate around this guide surface (e.g. G sliding pin = axis of rotation of the slide), *b2) over the section of the guide surface which is guided by the guide rail (e.g. If the slide is guided by a sliding contactor, the cross-section of the guide surface (or the sliding pin) is designed in such a way that the sliding element rests on an inclined surface that is aligned in a different direction from the vertical, and that the angle of this inclined surface opens downwards in relation to the vertical position of the axis of rotation of the slide, starting from its upper intersection with the axis of rotation (triangular tip of the angle at the top, opening downwards), whereby by raising the axis of rotation into the corresponding spring travel range by reducing the contact pressure of the hand, or lifting the hand, the distance between the guide surface and the inclined surface is reduced, i.e. by levering the inclined surface, a torque is applied to the slide plate, so that the cushion is rotated in a fixed return direction. *Two design variants are described below: *Fig.60a and Fig.60b show a side view of the variant in which the inclined surface or wedge surface runs over the entire length on both sides of the guide edges of the guide slot {106} in Fig.60b) of the rail guide, whereas ·&diams; the sliding element does not have to have an inclined surface and the anti-pull device of the sliding element forms a lever with two contact points on each side of the slot (as already explained). *In contrast, in the design according to Fig.60c, the plate surface intended as anti-pull device of the sliding element is a vertical wedge surface

&mdash;4&ogr;&mdash; ··· ···

k)

(corresponding to a set-up Q£e,iepk) whereby the inside guide slot edges do not have to have any bevelled surfaces.

*The variant according to Fig.60c is somewhat less expensive and but requires a slightly higher sow height than the variant according to Fig.50a or Fig.60b. *Regarding Fig.60a and Fig.60b: *Fig. la shows the position in which the cushion is relieved or the hand is raised. *Fig.lb shows the position in which the cushion is relieved or the hand is raised. *The meaning is: *103...cardboard plate laminated with foil paper (cellophane-coated cardboard), *99...sliding surface strips running on both sides of the guide slot (106)., 101. .supporting sliding elements (with curved sliding surface on the underside), (103b),- -..supporting webs for fastening 99 to 103. *102... longitudinal edge strips, (raised edge = band = stop), *The wide strips on the front side of the rail guide are removed in the illustration according to Fig.l, wide strip has an optional opening which opens the guide slot (see 106 in Fig.60b) for inserting the slide plates

*4ÖÖ optional, leaf spring or pair of leaf springs,

on which the guide iron (98), which also forms the axis of rotation of the slide plate, is suspended, optionally present, e.g. as a pressure force when an electrode surface (concentric circular ring 73b, see previous part of the description) presses against a capacitive length scale (69A, 69B). *The leaf spring is dimensioned such that when the slide plate is raised (hand raised), i.e. when the leaf spring is relaxed, it assumes the position shown in Fig.60a, i.e. when relaxed it has an exact spring travel, which is typical of a leaf spring. *400b...also leaf springs or spiral springs, on which the supporting sliding elements ' (101) are suspended on the underside of the slide plate (100) and act like a shock absorber. *98N....inventively modified trigger safety device of the guide element (101) used as the axis of rotation, whereby

the trigger safety is approximately a rectangular shape, the front pairs of corners are each the attack surfaces for a lever effect to generate a torque. This torque is generated by the upwardly tapering inclined surfaces (1Ö3S) of the inner edges of the guide slot (formed by reinforcing strips 103N), whereby the attack surfaces of the rotary lever (98N) are centered by these inclined surfaces when the slide plate is raised (kl = maximum), whereby the axis of rotation of the guided sliding element (98) is rotated into the defined rest position. The slide plate is raised by the spring force of the supporting sliding elements (400b with 101) to such an extent ( q ) that the surface of the trigger safety (98N) μη of the underside of a narrow horizontal groove (103X) on both sides of the guide slot on the inside of the underside. Furthermore, the distance downwards to the support plate (103) of the guide rail is maintained so that the guide element (98) can be pressed downwards. *Fig.60b shows the (via path q), cf. Fig.60a) slide plate pressed downwards with tensioned shock absorber springs 400b, in a rotation angle position (S) which corresponds to the rotation angle range of the slide plate (released by the downwardly widening opening of the slope (103S) of the guide slot edge), whereby in this position there is no longer any spring force in the torsional direction (ß)! *The alternative design according to Fig.60c corresponds to the function according to Fig.l, but the slope is not realized by the downwardly widening edge of the guide slot, but on the sliding or guide element, in which instead of a part edge acting as a trigger safety, the edge surface of a downwardly widening vertical triangle is provided, at the upper tip of which is the axis of rotation &iacgr; the guide pin of the guide element (98) acting on the slide plate is flanged - If the pin is lifted upwards (arrow direction), then the triangular surface adjusts itself accordingly due to its inclined surface (angle of rotation in arrow direction), whereby the cushion or the slide plate is brought into the reset position. As

Trigger safety is underside
Triangular surface (1Ö3S) or corresponding flanging of another plate surface is provided.

*As a further variant, the combination of the embodiments from Fig.l and Fig.50c would be possible (inner edges of the guide slot 106 with wedge surfaces 1Ö3S, as well as wedge surface on the guide pin of the guide element 98).

*A further embodiment of the expanded task is described below. *The further development fulfils the technical task of significantly reducing the pressure of the hand, or the palm of the hand, or the wrist resting on the cushion. This is achieved by using: several cushions (1-V, 1-H) arranged one behind the other, which can be moved directly to the keyboard front by shaping the cushion and/or by sliding the cushion support. *All of the design components explained in the previous part of the description can be used for this further development, with particular suitability for the example described with a runner sliding principle {skate

&bull;runner), with one or more cushions for the - hand rest ^, the support surface of which is in each case designed as a slide {100, see Fig.59a), which slides on a sliding surface {99 or 99-0) aligned in the longitudinal direction of the keyboard front by means of sliders {e.g. on both sides of a guide groove {X) or a guide web and is guided through the guide groove {or the guide web) via a guide element {98) and the rotatability of the guide element within the guide groove {or over the guide web) simultaneously forms the pivot point and for the cushion support of the front cushion {1-V with lOOS...upper slide} a further coordinate guide {99B) in the further coordinate direction {vT, see Fig.59a) in

A transverse direction to the guide direction of the guide groove (or the guide bar). *In a further preferred alternative, the rocking principle of a rocking cushion is used as a further design variant for the transverse movement of the rear cushion (1-H), as an alternative to the sliding principle of the front cushion (1-V). *In order to correspond to the common hand position on the one hand, and to avoid an annoying feeling of pressure on the arm at the contact point on the rear cushion on the other, the following further designs or further development variants are described. *In addition to the possibility of arranging a large number of movable cushions one behind the other for each hand, two cushions (1-V.-..front, 1-H..back) for each hand already provide a very good

Effect in terms of the technical task, .er *Variants for the movement coupling of the rear cushion (1-H) to the front cushion (1-V) are that the coupling is only mechanical (e.g. Fig.79), or via electronic control {cf. Fig.97}, whereby in both cases the variant is provided for the mechanical connection by a static connection of the support surfaces, which can also be designed as a joint (with a horizontal axis), or directly by the arm of the hand resting on it. *The front cushion (1-V), which concerns the hand rest in front of the wrist and slides directly along the front of the keyboard {from keyboard {8}) on the preferred sliding surface, is small and low, with preferred dimensions of approximately: 8 cm lengthways along the keyboard, 4 cm wide (BK) and approx. 0.5 cm to 1 cm high (h), cf. Fig.97, so that it lies well in the hand. In a further option, the front cushion is designed as a flat foil bag (e.g. PÄ/PE) which is filled with spherical plastic granulate of a softer plastic floating in liquid (see front part of the description) and thus adapts well to the hand placed on it (option: corresponding window opening {1-FV} for the leather cover of the foil cushion, Fig.97). The pressure relief of the hand placed on the front cushion (1-V) is achieved by the armrest of the cushion (1-H) arranged behind it, whereby the rear cushion (1-H) is designed, for example, as a preferred rocking cushion (see Fig.77) and the front cushion (IV) as a cushion that can be moved against the keyboard front on another sliding carriage (lOOS, Fig.69a) in another coordinate direction (vT). *The rear cushion {IH) designed as a rocking cushion for the armrest behind the wrist is designed according to the previous explanation ' and consists of a Foil bag (e.g. PA/&Rgr;&Egr;) which is only partially filled, e.g. with gas (&zgr;.e. air) or a liquid (e.g. water) and which forms a hollow due to its flat surface into which the arm (see Fig.97) can be inserted. "According to the previous description, the cushion is slightly raised at the back so that the hollow is created at the longitudinal seam of the bag, whereby the

The rocking roller of the cushion is formed. The cushion cover (fabric folded up {1-H} covered with a fleece band {132} on top and covered with a leather saddle cover {LD}) corresponds to the front part of the description. *In order to bring the arm resting on the rear cushion (behind the wrist) closer to the front cushion or the keyboard in line with the hand rest of the front cushion (flat), the rear cushion, which is higher than the front cushion due to its construction, is set somewhat lower (10ÖM in Fig.97, at a distance of 100V behind the front cushion). *The following describes an embodiment in which the sliding surface for the cushion arrangement of the front cushion can be placed above the edge of the table on the table in front of the keyboard without the keyboard having to be raised and the cushions for the armrest (1-H, behind the wrist) placed behind the hand rest cushions (1-V) protrude freely from the table top, whereby the device can be placed on the table in a space-saving manner and a level adjustment option for the armrest (of the rear cushion) is also provided.

*Two different variants are provided for coupling the displacement path of the front and rear cushions: *A first variant for a cheap version in which the movement of the front cushion (1-V) and rear cushion (1-H) is coupled by a static connection of the cushion contact surfaces, and a second variant in which the front cushion and rear cushion are coupled by a motor drive with corresponding sensory movement sensing of the cushion (e.g. via displacement path) with compensation of the respective deviation from a target position of the movement sensing. *The variant of electronically adjusting the rear cushion to the movement of the front cushion is of considerable advantage if the rear cushion is filled with water, for example, instead of air, as the moment of inertia of the rear cushion then becomes very large.

*Motor drive and scanning of the*vehicle movement*i;

The relevant support surfaces of the cushions are carried out in accordance with the already proposed embodiments of the front part of the description, whereby in addition to the linear drive of the slide plate in the longitudinal direction of the keyboard, a drive for the movement of the upper slide plate in the transverse direction can be provided by means of motors arranged independently on the slide plate combination, as can a servo-controlled rotation control of the slide plates. *In addition to the longitudinal rail guide (99 or 99-O), a transverse rail guide (99B) is preferably provided for the front flatter cushion, by means of which the flat cushion is moved towards the front of the keyboard while typing. *In addition to the design options for this already disclosed in the front part of the description. further coordinate movement of the cushion, the following detailed design is particularly preferred: *The slide plate (100) sliding in the longitudinal direction of the keyboard front on a sliding surface (99) by means of surface-separated sliding elements (101) is also designed as a sliding surface, like the sliding surface on which it slides, on which a further slide (lÖÖS) slides in a displaceable manner in the direction of the keyboard front, directly or via additional sliding surface strips (cf. 99-ÖSL in Fig.83 and Fig.76b). *In an optional development, the sliding surfaces for both of the slides (100 and 1ÖÖS) arranged one above the other are inserted as replaceable strips in a frame, as described below for FIG.80 for the lower slide plate {100} and in Fig.83 and 76b for the upper slide plate {1ÖÖS}. *The frame for the sliding surface of the lower slide plate consists of a foil-laminated cardboard plate ({103} in Fig.80, see the front part of the description), which forms the base (standing surface), on which strips {99} are glued as thin plastic strips on both sides of the guide slot {X} in the longitudinal direction of the keyboard front line, using narrow webs aligned parallel to the keyboard front (e.g. made of wood, {103b}). "These plastic strips {99} form the support surface for

the replaceable, actual sliding rails (e.g. made of particularly smooth, hard transparent PVC), which snap into the frame of the sliding surface {102) or are also pushed under the support surface (option, see later). *On both long sides of the frame for the sliding rail support (e.g. strips made of wood or plastic) are dimensioned so that when sliding strips {99-0} are placed on top, which form the sliding surface of the slide, at least one side has a raised band for the stop of the sliding elements when the slide plate is rotated (see front part of the description). The lateral limiting strip on the front broad side of the slide rail support is flush with the inserted sliding surface (cf. front description) to enable the carriage to be pushed sideways into the guide groove, with a corresponding slot (B, Fig.81) being provided in the middle for inserting the guide element ({98}, Fig.80), which also forms the pivot point of the carriage plate, with stop limits that can be pushed into the guide slot (strips ZPF, Fig.81). *Furthermore, it is optionally provided to place dots made of mushroom tape (Velcro tape) on the underside of the longitudinal strips (99-Ö) laid out as a sliding surface, which adhere to fleece tape strips that are correspondingly embedded in the support surface {99}. Instead of this adhesive connection, a magnetic adhesive connection can be used, or an adhesive connection can be dispensed with, or the frame (102), e.g. have corresponding grip grooves for the lateral insertion of the sliding surfaces (99-0). *The cross slide that can be moved towards the keyboard front is designed as follows in a special version: *On the lower slide plate for the longitudinal movement, the sliding support of the cross rail is provided on the upper side with guide bars or strips (elevations) running on both sides of the slide plate center line in a perpendicular direction to the keyboard front, each of which is covered with a further elevation that protrudes from the longitudinal edge of the guide bar, whereby "the cross rail guide with bottom edge groove for

The guide edges of the cross rail guide are enclosed either on the inside of the parallel guide bars or on the outside by sliding elements, whereby the vertical pins of the sliding elements are guided along the edges of the top bar of the cross rail bar on the inside or outside and the sliding plates attached to the lower end of the vertical pins slide halfway in the guide groove of the guide edges and are secured against removal by the groove. The sliding elements for the cross rail guide are then attached to the underside of the actual support surface for the cushion, or directly under the cushion.*In addition to the possibility of providing wheels as sliding elements (see Fig. 94), the sliding elements already explained, e.g. made of POM (polyacetal resin) in plate form and pill form, are used. The trigger safety is formed by the plates of the sliding elements, the guide centering by the pins, whereby the plates can also provide vertical support on the sliding surface of the slide plate, or without vertical support only centering and trigger safety is provided using additional skid-shaped sliding pills or bearing-mounted sliding rollers for vertical support. Variants are explained in Fig.83 and 76b.*For the cross slide, the actual sliding surface is also replaceable and an insert in the form of a plate (99-OSL) inserted under the edge of the guide groove made of the same material as for the sliding surface of the longitudinal rail guide (99-0). *This plate adheres to the slide plate, for example via Velcro, and has the stop limit of the sliding elements on the front and rear edges when the support surface of the front cushion is moved towards the front of the keyboard or towards the typist, e.g. in the form of a final strip, or is inserted separately from these stops into the guide bars (Fig.83, Fig.76b). ***The fastening for the support surface (100AP) of the rear cushion (1-H) can be made either by simply extending

The lower ( ¹⁰⁰ ) or upper slide plate can be attached at the back or made interchangeable to meet a wide range of requirements, e.g. for the optional inclination of the support surface of the rear cushion at an angle to the surface on which the keyboard is placed. The interchangeability can be achieved, for example, by attaching two slide plates for the lower slide together using Velcro and inserting the extension (100) for the support surface of the cushion in the space between these two slide plates and fixing it using an interchangeable bolt connection or another Velcro connection.

*£A further special feature is to provide an angle of the plate attachment (100M) for the support surface (10ÖAP) of the rear cushion (1-H) at a distance corresponding to the free space for the slide plate (100V) to be rotated, e.g. at a right angle downwards (wall lOOW in Fig.109, or angle M in Fig.77), and to also provide a corresponding angle (10ÖN, Fig.69a) on the support surface of the rear cushion, the two angles being connected in a height-adjustable manner by a slot connection (lOOM in Fig.6 69a, Fig.78) or sliding connection or spindle drive, which allows an adjustable height adjustment (1ÖÖW, Fig.79) of the rear cushion compared to the front cushion to make it lower; e.g. fixed with wing screws (701), the adhesion being e.g. can be optionally reinforced by Velcro fastening between the flat surfaces of the angled plate edges, or by servo control, as described later. *The rear cushion adheres to the plate along a rocking line, which is created by Velcro fastening KLT on the cover of the cushion J (see front part of the description). *The rail guide is preferably fixed to the table.

wise through tablecloth holding clamp VJÜS? or! * **t &idigr;

Screw clamps {7Ö2-ST) and/or suction cups embedded in the support surface of the rail, or also removable adhesive tape. *The tablecloth holder clamps (702) have a Velcro or mushroom tape coating on their top, which adheres to the Velcro strips attached to the underside of the rail guide, or can be inserted into the long side parts of the sliding surface frame, as described below {Fig. 91a and Fig. 91b). *According to the previous description, the guide groove of the rail guide does not have to be aligned in a straight line, but can have a curved shape, such as the ergonomic shape of modern keyboards (see previous description and Fig. 107, Fig. 110, Fig. 88, Fig. 86). *Furthermore, the right and left cushions can also run on split rails, whereby the left rail section is shorter due to the missing function key block. *For keyboards whose key blocks are not arranged in a straight line, the long side of the sliding surface, which corresponds to the rotation stop of the slide plate for the sliding elements, as well as the guide groove (or guide bar), is adapted to this shape.

*Another variant is to provide the underside of the lowered support plate of the rear cushion with sliding elements and to support it on another sliding surface (Fig.87b). This additional sliding surface can be attached to the underside of the rail guide (e.g. the foil-laminated cardboard) (e.g. using Velcro) or inserted at the side, whereby an adjustable height adjustment for the support plate of the rear cushion, between the additional sliding surface and the rail guide, is provided by adjusting screws or spacers, or an automatic adjustment is carried out by means of a horizontal joint connection axis (GLR in Fig.87b). *Other variants are to provide another

Sliding surface angled to a vertical one? h4ci} ui?tfen'*4n ;

the extension of the long side of the sliding surface frame (102, 704 in Fig.87b and Fig.87c) adjacent to the edge of the table via slot adjustment (701), or also to carry out a motorized height adjustment of the rear cushion (1-H), as described later (see Fig.77). Another option is to provide the further sliding surface of the rear cushion with its own rail guide (99-H), which is identical to the rail guide of the front cushion (99-RV) (Fig.87c). *For the variant with readjustment by motor drive for the motor support of the cushion displacement, several variants are provided: *a) front cushion ^k and/or rear cushion have a displacement sensor KJ (equivalent to Fig.76b), *b) front cushion and/or rear cushion are motor-driven (cf. Fig.79, Fig.89 and Fig.93 with Fig.78) *The two options from (a) and (b) can be combined according to the respective requirements, whereby e.g. the front cushion itself is motor-controlled by the displacement sensor of the front cushion, and/or the rear cushion is also controlled accordingly; ditto optionally, the rear cushion readjusts itself using another displacement sensor of its own, or also influences the readjustment function of the first cushion. *To generate a controlled variable, a small amount of play {VSP} in the longitudinal direction of the keyboard (or in other directions, see later) is provided for the travel sensor of the cushion in addition to the coordinate-based displacement of the motion guide, with sensory conversion of the displacement path within this play into a controlled variable. The additional displacement {VSP} is generated by keeping the guide elements at a distance from the guide edge, or by ■&diams; additional slide attachment).

*In another example, the motion play {VSP} is generated by a frame, the opposite sides of which contain the guide bars for the

■ ···· · · · · · · ··· * Displacement of the cushion to the keyboard front brliJe«.· .·*.,." (perpendicular to the keyboard front) and the other sides (parallel to the keyboard front) are the stops for the displacement. In a further development, this frame is inserted into another outer frame, whereby the inner frame has a clearance {VSP} to the guide sides of the outer frame (e.g. perpendicular to the keyboard front) within which it can be displaced. The sliding ability of the inner frame on the slide surface can be further improved by sliding elements or balls. *The determination of the displacement of the cushion within the movement clearance {VSP} to the fixed guide bars on the slide plate is determined by inductive sensors, whereby, for example, the principle of measuring the damping of a coil on an electrically conductive substance, e.g. sheet metal strips, given in the front part of the description is used, and the sheet metal strips are also attached directly to the frame in question instead of to the frame in question. Cushions (air cushions) can be attached (e.g. without the frame and directly scanning the rocking movement of the cushion or using elastic bands for the cushion support, with bands e.g. covered with metal mesh or the cushion cover itself covered with metal mesh). The sensor is designed so that the following movements of the inner frame in relation to the slide plate can be distinguished: parallel displacement to the right or left, or twisting. For this purpose, metal sheets are arranged at each corner of the frame, with suitable scanning coils provided on the slide plate. The damped oscillation is converted into an actual value (see above), with the actual values of the pairs of coils diagonally opposite one another and the pairs of coils directly opposite one another being each fed to a differential amplifier, so that a parallel displacement of the slide as well as its twisting is detected as analog voltages from the differential amplifier outputs. If e.g. the output frequencies of voltage controlled oscillators (VCO) as signal converters for the attenuation measurement and measures the frequencies or their period duration

lff

with a microprocessor, then <Jifi tion can also be carried out directly by calculation. *The motorized movement control of the cushions is carried out, as already explained, by means of cables in such a way that the displacement of the cushion determined by the sensor is compensated for immediately, or via its guide frame, whereby the displacement movement is on the one hand controlled by hand over a very small and low-friction displacement path (displacement play VSP) (scanned by the sensor), and on the other hand is carried out by motor (without the use of force by the hand) over long distances with constant regulation of the displacement play (VSP). *It is evident that in addition to the simple longitudinal displacement of the cushions, the rotation of the cushions can also be supported by a servo motor, since the rotation of the cushion movement can also be sensed by the frame or a specially provided radial rotation (by means of play and sensory scanning of the end points of the play), whereby a servo motor carries out the rotation accordingly. *It is also evident that the sensor can also use simple stop contacts (with two-point control) or springs (e.g. inductance measurement of spiral springs). *The power supply for the sensor scanning, if necessary also local drives, including their control signal supply and the signal routing of a serial digital signal emitted by the sensors, is carried out in a further development variant with two poles via the pull cables (45, 46), which pull on both sides of the guide element (in the guide slot), which also forms the axis of rotation (98b) of the slide plate (via sleeve 98S, Fig.79). *For this purpose, for the right and left cushions, e.g. separate guide slots (Xl and X2) can also be used, which are separated from each other by an insulating bar (99M) for the bare traction cables *' (see Fig.90), or the rails are divided accordingly (see Fig.88) into areas for the right hand and left hand, whereby at the inner ends of the rails, where the areas of the right and left hand meet, there are pulleys (49/48 UR) for the traction cables (45, 46 for each

Page) are provided, the drives .

both sides of the keyboard (inside housing 54, Fig. 88 and Fig.89).

*The two-pole signal routing (KlS, K2S, Fig.89) of the signal coupling of supply voltage and sensor signals, if necessary also control signals, for additional servo motors housed independently on the slide plates, which is carried jointly via the traction cables, is carried out, for example, via a central clock signal, which can also be fed to several participants (on the slide plate electronics), whereby for short time intervals according to a time protocol the clock signal otherwise supplied by the voltage supply coupling of the traction cables is switched to high impedance and is continued by participants connected to the traction cables (the slide plate electronics E of the cushions) in time-synchronized transmission. *The supply voltage is obtained from the rectified clock signal. The clock signal also contains phase-shift coding (such as in the Modulo-2 or Modulo-n process), the duration of which indicates the use of the state indicated by the phase shift, e.g. that the polarity of the serial data changes, or a defined pause follows in which a participant transmits sensor data to the control center, or reset pulses for the internal counting clock of the participants, which, e.g. by wired-or linking to certain counter readings, transmit these counter readings to a control center, as an alternative or addition to direct serial data transmission or addressing. The synchronization for the respective bus connection of the participants takes place via the counting clock (= data clock, e.g. of a Modulo 2 process), with pauses according to a compulsory sequence in which the participants ·*' connect one after the other and process a protocol. *Another development involves attaching a compartment to desks where the keyboard is placed to store the cushions.

device can be quickly inserted under the desk.»45s It is usual to provide pull-out compartments for this purpose. A preferred further development relates to the feature that the compartment for the installation of the cushion device can be pushed in under the desk on the one hand, or in an alternative development can be folded out of a use fixation, and in the inventive design can also be moved along the length of the edge of the desk so that the support device can be moved along the desk at any time. The described sliding element principle is used as the rail guide, with the sliding elements being enclosed on both sides by sheet metal-supported rail strips, which enclose the slide plate that holds the cushion device like a sandwich.

^The following are examples of designs described with reference to the figures; the description is not given chronologically according to the figures, but rather according to their technical function. The dimensions in mm are guidelines for the preferred design. *Fig. 97 shows an oblique view of the front (1-V) and rear (1-H) cushions, with the rear cushion and front cushion each sliding on a rail surface (99 front and 99H rear). The rear rail is set a corresponding distance (100V) to the rear and also lower (100W), which gives the rear support surface of the cushion (100AP) freedom to rotate and, furthermore, by lowering the rear support surface, the level of the rear cushion, which would be higher in the rocker cushion design (rocker roller), is well adapted to that of the front, low cushion. This adjustment is carried out in different variants and can be individually adjusted by hand, by motor, or also by motor control. *The variant according to Fig.97 relates to an embodiment in which the rear cushion follows the hand movement by means of a motor servo drive in the longitudinal direction of the keyboard front or the rail, whereby it is possible, for example, to

Cushions with a <Äl<issigJcee*t>«su because the high mass inertia of the cushion is compensated by the motor drive and no longer puts strain on the hand. *A very cost-effective variant with a combination in which the front cushion (1-V) is designed in the form of a flat cushion on a sliding surface that can be moved both along the keyboard and against the keyboard front, and the rear cushion (1-H) is designed as a rocking cushion, in particular filled with air, with a static coupling of the support surface of the rear rocking cushion to the lower slide plate of the front cushion, ensures the following advantages: *a) the rocking process of the rear cushion is transferred to the front cushion in such a way that a large part of the potential energy caused by the weight of the hand is converted into kinetic energy by the redirected movement of the hand, *b) due to the lightweight design of the large-volume rear cushion as an air cushion and the small, low front cushion with the filling of a floating, soft, round plastic granulate, the rear cushion follows the front cushion with almost no inertia, Furthermore, the granulate filling of the front cushion results in a fine hand massage through the interaction of the granulate floating in a liquid and the contact pressure reduced by the rear rocking cushion, which is perceived as pleasant due to the low contact pressure.

Fig.87 a, b, c and Fig.78 ^ design variants, whereby Fig.87a shows a variant in which the support surface of the rear cushion is flanged to the support surface of the front cushion and the support of both cushions is exclusively on the sliding surface of the front cushion, therefore the underside trigger protection of the sliding piece in the sliding gate is also loaded against the underside of the sliding surface, depending on the respective hand position. * *In Fig.87b, on the other hand, the support surface (löO-AP) of the rear cushion is additionally supported by a further sliding surface (IGO-UP), which is carried by the support frame (102) of the front sliding surface (via vertical extension 704). *Fig. 87c shows the side view of a variant with double rail guidance by separate sliding surface rulers for the front {lV with 99-RV},

t and rear {1-H with 99-H} cushion, corresponding oblique view

in Fig.97. If, however, Fig.97 is implemented according to variants as shown in Fig.87a and 87b, then the sliding surface ruler of the rear {99-H} cushion is omitted, or for the variant as shown in Fig.87b, a ruler for the further sliding surface (100-ÜP) takes the place of the sliding ruler, see also Fig.115. *Fig.78 shows the side view of a version as shown in Fig.87a, whereby in this variant the sliding surface (99) of the rail guide is loaded both on its underside via the trigger safety (plate 98) of the guide element at the edge of the guide slot (99-f, slot X), and from the top (via sliding skids 101). Guide element {98} slides in slot X and at the same time forms the axis of rotation of the lower slide 100, on which the further slide for the transverse movement of the cushion (1-V) in the direction of the keyboard front is mounted. *The pivot point is therefore on the lower slide, while the upper slide allows the hand to move towards the keyboard (in conjunction with the rocking movement of the rear cushion). By optimizing that the pivot point of the front cushion is on the lower slide, it is possible to adjust the support surface (1Ö0AP) of the rear rocking cushion (1-H) directly via the height adjustment (701) of a "simple bending" (via extension 10ÖV) to the

lower slide plate {100) to be closed, to enable the rear rocker pad to rotate smoothly without any additional sliding surface for this pad and, furthermore, to keep the leverage for the load on the trigger safety (at point 99-f) low (Fig.78), whereby, furthermore, by using a rocker pad for the rear pad as an armrest, the leverage of the arm moving back and forth in the direction of the keyboard front is limited while allowing good mobility of the hands for typing. *Due to the simplicity of the structure, the variant according to Fig.78 corresponds to a cost-effective, functionally optimized version. *Details for design variants of the upper carriage (lOOS) for the front cushion (1-V), with sliding skids (lÖS), mounted on the lower carriage plate (100), are illustrated in Fig.69a, Fig.76b, Fig.83 and Fig.93. *Fig.

in contrast, the lower slide plate (100) shows the sliding guide for the upper slide with the slide removed (cf. lOOS in Fig.69a) *The guide of the upper slide is designed according to Fig.83 or Fig.76b in such a way that the vertical pins (lölb) of the guide elements (löl-OS), each closed off with a plate acting as a trigger safety, are enclosed on both guide sides of the upper slide with lateral rail guide edges (99B), the front edge and rear edge of the lower slide having stops (cf. stop bars or pins, 703 and in Fig.93, Fig.97 and Fig.69a) for the guide elements to limit the displacement path of the upper slide. *In addition to the variant of allowing the upper slide {1ÖÖS} to slide directly on the underside of the plates (101c in Fig. 83 or 98B in Fig. 76b) of the centering pins {101b of 10 ⁷ I-OS, see Fig. ⁸³ } on the sliding surface of the lower slide {100}, a further variant is provided for a spacing between the underside of the sliding plates (98B) and the sliding surface of the lower slide. This spacing is achieved by sliding skids (101-GS) which are attached to the underside of the upper slide on both sides outside the guide elements {101-OS).

and only make a vertical distance adjustment. The lateral support is provided by pins {101b}. *In both variants, it is possible to provide the upper slide with a play {VSP} for the extension option of a motorized adjustment, as previously explained, and which is sensed by means of an inductive damping sensor in order to obtain a direction value in which the lower slide must be motorized to compensate for the frictional force between the lower slide and its sliding surface (99). *Versions according to Fig.76b and Fig.83 can be designed to slide with sensor sensing of a play {VSP} or without play in a fitting shape. *The differences between the variants according to Fig.76b and Fig.83 relate to designs in which in Fig.83 the lateral mobility (VSP) of the upper slide plate is achieved by a corresponding distance of the guide elements (101-OS) from the cross rail guide edge (99B in the direction of the keyboard front) directly through the guide elements (pins 101b of 101-OS), while in the variant according to Fig.76b the guide elements (101-ÖS) have a sliding fit to the lateral rail guide (99-B), and the lateral rail guide is designed as sides of a frame (RM) within which the guide elements (101-OS) slide and rest on the inside against the frame sides. For this purpose the outer sides of the frame (RM) have a movement play (VSP in Fig.76b) to other guide sides which are placed on the lower slide plate (100). In the variant according to Fig.76b, a frame (RM) with a movement clearance (VSP) is also inserted between the lower slide plate (100) and the upper slide plate (100S), whereby this frame is also supported on skids (RMGL) or balls (KGLn, Fig.96) which slide, for example, on exchangeable sliding plates. *The sensing of the lateral movement of the upper slide plate within the movement clearance (VSP) is carried out for both variants in such a way that metal sheet strips (33) are applied (in Fig. 83 on the underside of the upper slide plate 100S, in Fig.76b "on the underside of the frame) to which

by means of coils (the electronics E)
Damping measurement is carried out and the amplitude damping achieved by electrically conductive sheets (33) is evaluated as a measure of the displacement VSP. *The electronics (S) with the sensor coils are then housed, for example, within the rail guide (99B) of the upper carriage, which is placed on the lower carriage (99), or in the remaining free spaces of the lower carriage plate. The signal feed of the traction cables to the carriage plate is carried out in accordance with Fig.79, whereby the guide element (98) has a hollow axis (98b) through which the contacted connections of the traction cables (45, 45) are guided from below (AZSU) to above (AZSO). ,

*Furthermore, only the frame part of the cushion, which can be moved in an additional movement play {VSP}, can be ball-mounted (in ball grooves, see the previous description section) and, through motor support of the moving parts mounted on sliding elements, the sensitivity of a ball-mounted support device for the cushion movement guide can be achieved for the entire device (see Fig. 96). *In the same way, for example, the rear cushion (1-H) can be made to be movable in the direction of the keyboard front by means of a rail-guided device in addition to or as an alternative to the design as a rocking cushion. *In Fig.76b, an embodiment is shown in a further development with a scale, by means of which the contact pressure of the hand on the front cushion (1-V) is measured for the purpose of an automated adjustment of the height adjustment of the rear cushion (1-H) (see Fig.77 below): For this purpose, the upper slide plate for the support surface of the cushion (1-V) has a frame opening, which is covered by a flexible plate (633) made of spring sheet or flexible plastic plate coated with metal and this plate (633) forms the support surface of the cushion

This deflection is measured via a coil (L6) located underneath in the window of the support surface, which carries out a damping measurement on the metal plate (633), as is done for determining the displacement of the upper slide plate within the movement play VSP (optional or additional). *Fig.79 illustrates a proposal for attaching the traction cables (45,46, see also preliminary application) directly to the guide element (98) of the lower slide plate via a bushing (98S) in which the guide element is rotatably mounted via the extension of its vertical guide pin (98b). *Fig.82 shows an example of the plate of the lower

E ■

Slide (100) (front cushion) according to assembly drawing according to Fig.69a. {7Ö3-KLT} and {7Ö5-KLT} are Velcro fasteners to the fleece surfaces that adhere to them for plates to be attached, as shown in Fig.93 as an example: these plates each have the stop bar (703 and 705) at their end to limit the displacement path of the upper slide plate.

*Furthermore, Fig.82 illustrates how the sliding runners are inserted into the plate: the sliding runners (101) are each made of a sliding material (e.g. POM) in the form of pills (Fig.82b), which protrude from the underside of the plate towards the sliding surface. These pills are each inserted into a slot (101 ES, see also Fig.79 right) sawn into the edge of the plate, whereby this slot is closed or covered on the upper side of the plate (strip or sheet löl-i^LA, Fig.79) and closed or covered from the edge side on the underside (löl-HLT, see also Fig.84 and Fig.85), so that * the pill is enclosed on the one hand by the sawn slot (lölES) of the plate, and on the other hand by the cover strips. As Fig.82 shows, the slot (101ES) for the sliding pills {101} is inserted at an angle {y} which is dimensioned such that the flat front sides of the

The sliding pills abut flush against the edge strip that serves as a stop on the sliding pill when the slide plates are rotated to the stop position. The round cylinder sides of the pills act as sliding skids or rollers, whereby the sliding pills can also have rolling axes (e.g. also for cross slides) or can be fixed in place. *The following is a summary of the figures that relate to the previous chapter of the description, with further explanation of the reference designations, insofar as they have not already been explained. *Fig.69a shows a top view of the slide combination of lower (100) and upper (1ÖÖS) slide b with the cushion removed (Velcro connection KLT) with the plate 1OÖAP for the rear cushion flanged on. *Fig.77 shows the continuation of Fig.69a concerning the flange connection of the rear cushion {1-H} with top and side view and rocking line KLT (velcro tape, adheres to crossed Velcro/mushroom tape 40a, whereby leather-covered foam strip (HSL) also adheres to 40a (adjustable) with the fleece underside. *In Fig.77 a proposal for the motorized height adjustment of the rear cushion (lH) is shown as an alternative to manual adjustment (cf. wing screw 701): for this purpose the elongated holes of the height-adjustable parts (1ÖÖM and 1 1ÖÖN) are replaced by a dovetail or a similar fitting of the parts, or are held statically adjustable in their relative height by a pair of motorized spindle drives (M5a, M5b) (cf. Fig.109), as the version according to Fig.77 also shows: two Motors arranged next to each other (M5b behind M5a; M5b is hidden by M5a in Fig. 77, see also Fig.^09) rotate a threaded sleeve/spindle combination in opposite directions, one of which has a left-hand thread and the other a right-hand thread, whereby the torques of the spindles are compensated for the same linear feed paths. *The spindles are screwed into sleeves, with one end of the threaded spindle sleeve combination (LN) flanged to the motor axis and the other end to the underside of the support surface (10ÖAP) of the rear cushion (see also Fig.109). The motors are controlled by a circuit board arranged on the underside of the cushion support surface (100ÄP).

(Electronics E with Ics IC, cf. auck* j^i^.BeaJi.JJefeetigif the motors are on the lowered continuation

(1ÖÖW) one of the two slides of the front cushion (e.g. lower slide 100), *For the motorized adjustment variant, two variants are distinguished, one in which the adjustment takes place with the hand raised and the device manages with motors of lower power and low weight, and a second variant in which the motor power is sufficient to make an adjustment with the hand placed on the device. In both cases, the threaded spindle sleeve combination (LN) is self-locking.

*In Fig.77 it is also indicated how the underside of the connecting surface of the support surfaces (1Ö0M, 10ON) of the rear cushion and front cushion at the point where the motors are attached is supported by another sliding surface, which is attached to the front rail guide. In addition, the support surface (1Ö0AP) of the rear cushion can still be supported (with IGO-UP in Fig.87b) or by another rail guide of the support surface of the rear cushion, as explained in Fig.97. *In another variant, the front cushion is equipped with a pressure sensor that measures the contact force of the hand placed on it, whereby this can be done absolutely or relative to the contact force of the arm on the rear cushion, optionally via another pressure sensor for the support of the rear cushion. *If sufficiently powerful motors are used for the height adjustment, then the automatic readjustment can be carried out immediately according to a measured average value of the contact force of the hand. If, on the other hand, only small motors are used, then the adjustment can be switched on in a separate process, e.g. if the user adjusts the height of his seat, because this changes the distribution of the contact forces of the front and rear cushions. If the adjustment

function is switched on and if the measured mean value of the tracking force distribution deviates from the target value, an acoustic signal sounds from a piezo signal generator, whereupon the user removes their hands from the cushions. After the pressure sensor has determined this, the motor level control begins with the incremental adjustment, e.g. in approximation according to binary weights (starting with the largest weight) after a successive apromaximization (corresponding to the well-known A/D converter principle). For each weighted approximation step, the user is prompted with the signal to put their hands back on the cushions, or to remove them again after the approximation measurement has been carried out, whereby the user can, for example, type a test text into the keyboard during the measurement. This adjustment takes place until the specified target value of the tracking force is reached.

^The adjustment process is initiated, for example, by pressing a button. The signal to request that the hands be placed on the cushion corresponds, for example, to the rhythm of a telephone ringing tone, and the request to remove the hands from the cushion corresponds to the busy tone. When the adjustment process is complete, a mixed signal (short-long, etc.) is emitted. *Another variant is to install a voice signal chip for the instructions. *Further details for the servo-controlled height adjustment of the rear cushion are described in Fig.109. *An example of how to measure the contact pressure on the front cushion is shown in Fig.76b and has already been described in the previous part of the description. It is obvious that this principle can also be applied to the rear cushion as a supplement or alternative. *Fig.78 ^/ shows a side view of the combination and Fig.69a and Fig.77 with the areas HA for the hand rest on or in front of the wrist and AA for the arm rest behind the wrist. *Fig.79 shows an example of attaching the cables (45, 46) to the guide element (98) with

Contact feedthrough from below (ÄZS0)**aach» _# 9t)fi,n· {A2SU>.*to the slide plate- The cables are attached in an insulated manner to the sleeve 98S, which forms the pivot bearing for the guide element (98 rotatably inserted in 98S) of the lower slide plate (100) (e.g. by putting together two sleeve disks that are insulated from one another with a fastening disk for the cables inserted between them (including soldering lug for contact); e.g. suspended in rings, contact is made by the opposing pulling force of the cables (the differential force control of the right and left cable). *Fig.8Ö shows a side view (section) for the preferred design using exchangeable plastic strips for the sliding surfaces, both for the top and the bottom of the rail guide surface. On the top, the strips (99-0) are inserted onto the support surface (99) of a clamp (102), which is on the outside The lateral fixation for the strips (99-0) is formed by the projecting edge strips (102) and on the inside by the rotary axes (or guide elements 98) of the lower slide plates guided in the guide slot X. A further additional fixation is provided by the preferred stop strips (ZPF, Fig.81), which are inserted as end pieces (ZPF, Fig.81) into the guide slot at each of the lateral ends of the sliding surface. Since the axis of rotation (of 98, see also 98b in Fig.79) guided in the guide slot (X) presses against the underside of the edge of the guide slot with the sliding plate (98) acting as a trigger safety device (see 99-f in Fig.79) in the absence of sliding support of the rear cushion (see previously shown alternatives), the narrow strip which affects this process (underside) on both sides of the sliding plate {98} is also designed as a replaceable sliding surface strip: 99ü in Fig.80. For this purpose, the limiting webs which support the edge of the guide slot on the inside (103c) are kept lower by the thickness of these sliding surface stiffeners, so that the lower sliding surface stiffeners (99Î&Igr;) can be inserted into the resulting "slot between the top of the limiting webs and

The sliding strip (99U) inserted on the underside of the support surface (99)/*vegß ^r:side is inserted through the slot (see B in Fig.81), a side strip of the frame, which also forms the insertion opening for the guide axis (98) of the slide (100). The lateral fixation of the sliding strip (99U) inserted on both sides of the guide slot is carried out along the guide slot by the rotary axes (98) of the slide plates guided in the guide slot and the end pieces (ZPF, Fig.81) inserted into the slot, as well as by the additional support bars placed next to the lower limit bars (103c) for fixing the support strips (99) of the sliding surface (99-0,). An alternative to the lateral insert version of the exchangeable sliding strips is described in Fig.llö, in which the rail surface can be opened along the longitudinal axis.

*Furthermore, Fig.80 illustrates measures for the expansion option, in which the guide element (98) of the rotation axis of the lower slide presses against a capacitive length scale (see previous description), which can be done on the underside or on the top. The capacitive length scale (e.g. sawtooth pattern) is then applied directly to the underside of the relevant replaceable sliding surface (of 99-0 or 99-U), which can also be done by printing with a paste within a double film, for example, whereby as an alternative to evaluating the capacity (see previous application), the evaluation of the ohmic resistance (measured via the capacity of the guide element) can be done. {F98}...or {98-GL} are correspondingly electrically conductive disks and are pressed against the capacitive scale (insulated) by spring force. The detachable contacting of the capacitive scales on the exchangeable sliding surfaces (of 99-0 or 99-U) is carried out, for example, via eyelet contacts or capacitively via large contact surfaces (to

Support surface {99}, which is contacted with a 'fixed edge'. *The use of a capacitive scale, the capacitance value or ohmic resistance value of which is capacitively short-circuited by an electrode of the guide element of the slide plate sliding on it, whereby the length of the slide traveled is determined by stationary measurement of the short-circuited electrodes, is advantageous if the slide plates have no signal feed devices and no traction cables. (Alternatively, an optical scale is also possible). For cursor control (see above, it is sufficient if the cushions for only one hand are scanned in their travel length).

*If the traction cable variant is used using the trailing principle according to the invention, the displacement path of the slide plates can also be tapped via the unwound traction cable length for the purpose of cursor control (see advance notification) (see Fig.45). *If required, the variant according to Fig.79 can also be designed according to Fig.SO with exchangeable sliding surfaces (99-O and 1Ö0Ü). *Fig.81 shows how the end pieces (ZPF) are inserted into the guide slot (X) at both ends of the rail guide (only one side shown). The end piece (ZPF) for one side of the rail guide, which is designed as a short strip piece, preferably has a cross bar (LA) attached at right angles at its outer end, through which the end bar forms a T-piece, the attached cross bar being inserted into the insertion slot (B) of the side in question (cross bar LA over length BZ according to Fig.71c matching insertion slot B). *As a further special feature, the return path for the deflection of the cable (45,46) is shown in Fig. 50 by means of a guide groove (XRF), if this variant is used (cf. Fig.88, Fig.89, Fig.90); 103d...rounding of the web inner sides of the guide slot X, if cables are used. *As in Fig.81 and in the oblique view according to Fig.71c of the relevant end strip

iöhet

As shown, the cross bar (US)* is set at about 100 mm higher than the plug-in bar ZPF (e...99-0 = level of the upper sliding surface strip); the remaining edge of the plug-in bar (ST-1G2B) at the bottom is therefore supported on the side frame bar (1Ö2B in Fig.81). *The top projecting attachment of the T-piece (ST99-Ö) in turn forms the lateral support of the sliding surface strip (99-0). *For the other side of the rail, a simple short bar without a T-attachment is sufficient as a closing strip. *Fig.82 shows the lower slide plate without the cross slide guide part (cf. 99B in Fig. 69a). *As a further special feature shown in Fig.82, the sliding pills (sliding skids 101, see also Fig.82b) are inserted into the sliding plate at an angle (y) which is dimensioned such that their stop on the flat side edge (SRND in Fig.82b) of the pills on the protruding longitudinal bar of the sliding frame (see bar 102 Fig. 69a) lies flat on the inner edge of the bar.

*Fig.83 and Fig.76b illustrate the cross slide placed on the lower slide plate in the variants already explained above. As a further special feature in Fig.S3, a fastening sleeve HOS is provided for the formation of the pivot 98 made of POM (with spacer S) sliding in the guide slot (cf. X in Fig.97 of the sliding surface), which reinforces the fastening of the pivot to the underside of the slide plate by means of an adhesive or screw connection. An alternative is to secure the upper fastening plate of the sliding element directly with a screw fastening. *Furthermore, Fig.83 (below) shows how the relatively thin vertical pins (necks) of the guide elements (IGl-QS, made of plastic POM) of the upper slide, each of which is closed off with a plate acting as a trigger safety device, are secured against lateral bending by sheet metal or other plastic plates (BLCl and BLC2). For this purpose, plates are screwed onto the underside of the upper slide (lOOS), each of which has a slot (SLC) into which the neck (lölb, Fig.S3 below) of the

&bull; :: &rgr;

Guide pins used guide,SgYdite»lefnente (£O«lrt ■ ···· · ·* **

is inserted, whereby the plate presses on the heads (101-OS) of the sliding elements sunk into the underside of the slide plate (100), or covers them. *Fig.84 illustrates how the sliding pills are inserted into the underside of the slide plate (100) and thus form sliding skids (101, ditto 101-GS for lOOS upper slide plate). *Fig.85 shows the corresponding side view in Fig.84, 101-ES means the cut slot for inserting the pills 101 (shown as crossed hatching in Fig.83). *Fig.86 shows the application of the device on an ergonomic keyboard with a curved front line, whereby the strip of the sliding surface of the rail guide (99-0) including the

guide slot (X) and frame (102) have a parallel curved shape. SP...space between the keyboard for right and left hand enables equivalent separation of the rail into H...part for right hand and L...part for left H hand. The table edge TK is also shown in Fig.86. *Fig.88 shows an example with the rail being separated into two guide parts for right and left hand, which has the advantage that the bare pull cables of the slide plates of right hand and left hand do not need an insulating bridge (in contrast to the example in Fig.90). As Fig.88 shows, the front long side of the curved frame of the rail sliding surface protrudes over the edge of the table in places, where the underside of the rail sliding surface is supported by clamps such as those used as tablecloth holder clamps (702), or the clamps (702ST) are further modified by an additional screw support (cf. Fig.114 below). *Fig.90 shows the variant with an insulation bar (99M) provided in the guide groove for the *

Traction cables, whereby the return of the deflected traction cables is carried out on both sides of the long sides of the rail frame (cf. XRF in Fig.80) and the bare, current-carrying cables run on both sides of the insulation bar. The contacting of the cables for the feed is carried out, for example , via contact springs attached to the conductive traction cable pulley axes, the contacting of the slide plates is described in Fig.79.

Fig.87a, -b and -c illustrate side views of the variants described above. KLT-702...Velcro or adhesive connection holds the underside of the rail guide to the table clamp 702. Furthermore, KLT2 and KLT3 are Velcro or mushroom tape strips glued to the underside of the leather pad LD, which on the one hand adhere to the fleece tape on the front hand of the top slide of the front cushion (1-V) (KLT-2, see matching fleece strip KLT-2 on the top slide plate in Fig.69a), and on the other hand adhere to the fleece surface of the rear cushion (KLT-3 on 1-H), whereby by attaching several parallel Velcro strips (KLT3) the piece of leather running from the front cushion to the rear cushion {LD) can be tensioned accordingly (Fig.87a), but as an alternative to this separate pieces of leather {see LD2 in other figures) can be used for the front and rear cushions. The Velcro fastening makes it easy to replace the leather pad variant for the front and rear cushions, particularly the variant for the front cushion with a window (1-FV) with Velcro tape on the underside to improve adhesion to the front granulate cushion (see Fig.9). Fig.87b also illustrates the variant in which the support surface of the rear cushion (10Ö-ÄP) is coupled to the front cushion via a joint (GLK, hinge with axis parallel to the keyboard front line) so that the rear cushion slides safely on the additional support surface (löö-UP). *Fig.89 illustrates the deflection of the pull cables, which is always taut by counter-control of the drive rollers (48, 49), by means of deflection rollers 49UR and 48UR, which is particularly suitable for a split keyboard (see Fig.97) (see previous description), or also for * a design according to Fig.90. *K1S and K2S are sliding contacts or spring disks that feed the signals to the bare traction cables (45 and 46) on the electrically conductive spool rollers or their axes. The unwound traction cable length can also be measured, for example, by "damping a spiral spring inductance that is insulated from a metal disk,

as in the front part of the description; ei"lääi:er£·. .,.· *Fig.97 shows an oblique view of the entire device with separate sliding surface for front and rear cushion, whereby the rear cushion is slightly raised at the back to support the rocker roller of the only partially filled cushion (1-H) (bar HSL), leather piece LD2 of the front cushion 1-V has a window through which the granulate cushion filled in foil protrudes, adheres with Velcro strips (shown hatched) to the edge of the window on the underside of the leather pad; LD2 is separate from leather LD of the rear cushion; or LD2 is connected continuously to LD). *Fig.91a with Fig.91b and Fig.91c illustrate preferred variants for the tip-proof

«Fasten the rail guide strip (99 with frame 102) directly above the table edge (TK). The variants have the following function in common: The usual tablecloth clips (702, e.g. made of transparent plastic or sheet steel clip 702ST according to Fig.114) used as holding clips hold firmly to the attached table edge, but would be unstable against lateral twisting. It is therefore planned to provide the underside of the rail guide strip with rubber feet GF, which are pressed firmly onto the table top by pressing the upper clip part (7Ö2-O) of the holding clip (702, 702ST). By further providing a guide web (704) on both sides for the upper clip part (702-0) inside _the rail guide strip, the clip is secured against lateral twisting and good adhesion of the rail guide strip is ensured while it can be quickly removed. Furthermore, the adhesion of the rail guide strip can be further strengthened by means of removable adhesives (see Fig. 113) or improved by screw clamps (see Fig. 114).

*Fig.91c shows a variant in which the upper clamp part (702.-0) is attached to the outside on the underside of the rail guide strip (103), with lateral

Guides or webs (PF), which may also form the rubber pressure surface (GF). *Fig.91a and Fig.91b, on the other hand, illustrate a variant in which the upper clamp part is inserted into a slot {102-F}, which is provided at corresponding intervals on the longitudinal part of the rail guide strip (102), and presses against the top of the bottom side of the rail guide strip, Fig.91a showing a top view of Fig.91b below, with section SC-SD; and Fig.91b below shows a side view with section SÄ-SB from Fig.91a. Fig.91b above shows a side view of Fig.91b on the right, which in turn shows a section through the table edge TK for both variants (cf. option of 702, 702-0). ^Preferably, the insertion slots (102-F) let into the long side (102) are arranged so that the underside of the upper clamp part (702-O) rests on the top side of the base (103) of the rail guide strip, whereby, as shown in Fig.91b below, the webs (103b and 103c, cf. Fig.80), which provide support for the rail sliding support (99), are dimensioned in height such that a gap (2WI) is created above the upper clamp part, which is sufficient to slide the lower sliding surface strips (99U) over it, whereby the webs have interruptions at the points where the clamps are to be inserted into the insertion slots, and in order to facilitate the insertion of the clamps , are provided with lateral transverse guide webs (704) in the insertion direction of the clamps (transverse to the longitudinal direction of the rail guide). *A further preferred measure is to provide the underside of the rail sliding support (99) with pressing surfaces over the insertion points of the clamps, which fill the gap (Zfefl) over the upper clamp part to such an extent that the upper clamp part ,* is firmly clamped into the insertion slot from the top on the one hand, and on the other hand there is space outside this pressure area to insert the narrow strips of the lower sliding surface (99U) on both sides of the guide slot X; (cf. inside boundary lines of the lower sliding surfaces in Fig.91a, inside slot X, whereby the lower sliding strips

99ü not shown in Fig.91a '(hep&ahgQzog&i *** ·

*Fig.92 illustrates how the framed (102) rail slide support (99) is inserted into another frame (99-äDPT) (e.g. via Velcro fastening or pressed on by a clamp), which is constructed like the rail slide support, but without a guide slot, and serves to raise the cushion device for use on typewriters TK... .table edge). *Fig.93 illustrates an example in which the lower slide plate (100) is covered with Velcro strips for placement on surfaces adhered to the Velcro strips, at the ends of which the stops (705 or 703) which can be removed via these surfaces are provided for inserting the upper slide plate into the rail guide (99B). *Fig.94 shows a variant in which rollers (RL) are used instead of sliding surfaces, which enclose the sliding surface or hollow surface (corresponds to 99) like a sandwich (held against rotation by parallel connecting webs 98), with KGL being a ball bearing for the possibility of rotation of the slide plate. *Fig.95a with 95b show a circuit proposal for the two-pole (K1S/K2S) signal transmission via the pull cables (45/46), whereby the electronics on the slide plate can be further distributed as required and several participants of the fixed transmission center (S housed in housing 54 in Fig.88) can be connected together by continuing the two-pole cable pull bus bar.

*The circuit of the participants corresponds to Fig.95b with a microcontroller uP-E each, which sends a serial data signal DhT (e.g. Modulo 2 signal) in bidirectional direction, or receives (SE/EP) and furthermore the power supply of the participants is fed by the received serial power data signal (rectifier, D with capacitor CS), whereby during a return transmission process of the receiver this supply of the supply voltage is switched off (via S, electronic switch), which prevents an excessive load on the receiver supply

is avoided. The supply of the EfiSSllt^

s ··

only by the stationary transmitter (S) with a power data signal, whereby the voltage VCC rectified in the receiver {E} is fed to the electronics as a supply voltage via a step-down regulator or converter, and the (higher) voltage of the power data signal is buffered in a storage capacitor (CS). *The receiver circuit also has a watchdog timer circuit for monitoring the data signal over time, whereby if the transmitter circuit fails (detected by time interval detection in the uP), the receiver circuits send back to the stationary transmitter circuit at set times according to the corresponding protocol, provided they have been addressed beforehand. Data and addresses are arranged in a compulsory sequence within the serial data. *ÖSZ feeds the sensor coils, the damped oscillation is fed into a VCO (voltage-dependent oscillator circuit) ), the frequency of which is evaluated by a microcontroller circuit (see front part of the description). *The damping measurements for different displacement measurement points, weight measurements, height adjustments each have a parallel resonance circuit with a different frequency for each oscillator circuit, which ensures sufficient decoupling of the measuring systems. Other variants are: ^The upper slide of the front cushion with its direction of movement between the user and the keyboard front (perpendicular to the length of the keyboard) is also to be provided with a motorized cable drive: *This variant is also illustrated in Fig.93 with the two drive motors Ml and M2 (set lower behind the slide plate, at a distance of 100V, see 97) and Fig.78, whereby the drive motors can contain further participant circuits according to Fig.95 and the bus circuit is continued via the further cables of these drives. Likewise, the control for the height adjustment of the rear cushion (see M5, described above) can be included in the bus circuit including the sensor circuits. *The cable pull is deflected using the pulleys ULI, ÜL2 and ULV, see also Fig.78: first cable pull via pulley

ULV pulls sledge lOOS forward with tMIen&i&ig'jler »·&idigr; "\

rear roller ÜL2 (cf. Fig.93) and further cable pull via further rear deflection roller ULI pulls the carriage back, both cables being driven in push-pull by Ml and M2 respectively, equivalent to the principle already explained in Fig.89. In Fig.93 ULI is driven by M2 and UL2 by Ml, each via horizontally mounted axes. *The sensor scanning for the drive in the further coordinate direction is then carried out with the design according to Fig.76b, whereby the frame RM not only has a play (VSP) to a lateral stop surface (rail guide) in the lateral view, but also at the front (towards the keyboard font) and rear (towards the user) with a corresponding coding of the frame sides by metal sheets (33) and associated scanning coils {E} on the lower carriage plate.

*5All drives are housed in soundproof housings, with the traction cables leading out of the housing via replaceable, insulated sleeves, e.g. pressed into a sleeve (with a cable inserted in a side slot) with a screw thread for a corresponding housing hole. *Fig.96 shows a variant in which the frame RM does not slide on sliding elements, but in a ball groove (KGLn) (with lateral play VSP). *In the lateral direction, the ball acts as a sliding element, with the underside of lOOS being the sliding surface (optionally replaceable via sliding strips); in the direction of the keyboard front, however, the rolling function of the balls is ensured, the balls can also be made of PÖM, for example (see above). *Fig.98b to Fig.105 show examples of a cable retraction function when the slide plates are only to be temporarily supplied with signals for the purpose of adjusting the motorized height adjustment of the rear cushion, and no cables for further servo control or no supply rails for signal guidance are provided. *Flg,lö3 and Fig.108 illustrate circuit diagrams.

- HP -

measures to guide switching signals via a two-pole cable for this simplified Adsftikrtijig· ***· · *..!"··, and to communicate voltage settings of a control element (switch or potentiometer) attached to the frame of the sliding surface to the microcontroller for the electronics (IC, from E in Fig.77) housed on the slide plate for the height adjustment of the rear cushion with as little circuit effort as possible. The control element is used to specify which contact pressure for the front cushion is to be specified as a target value by adjusting the height of the rear cushion, whereby e.g. 3 switch positions (hard, medium, soft.-...strong (H), medium (M), weak (S)) are sufficient. *Fig.lö4 shows the variant in ^which a two-pole cable can be pulled out against a return spring on both sides of the frame {1Ö2B}, whereby the cable end has a two-pole jack plug (907) as a connection, for immediate Insert into suitable sockets (cf. 901) of the slide plates (cf. Fig.69a) on their outer sides.

*The cable guide for each of the two cables is formed by a metal tube (Hab in Fig. 105), the first contact pole of which is the inside of the tube and the second contact pole of which is a busbar (906e) inserted into the tube (and insulated from the tube 9ö6d). A mini-slide (906c) slides in the cavity between the inside of the tube (Rab) and the busbar (9ö6e), supported by a pair of contact springs, one contact (906b) of which rubs against the busbar (906e), the other contact (906a) rests against the inside wall of the tube. *The centering of the mini-slide is carried out by a disk segment (904) held by a sheet metal bracket (906aK), which is guided so as to slide in the cavity of the tube (between the inner wall and the busbar). The double-core connecting cable (a,bL) is pushed through a through hole on the front side of the disc segment (904) and is connected to the sheet metal bracket (9ö5aK), which is designed as a strain relief piece (via a pair of holes with a cable pulled through).

A wire of the cable is clamped or soldered to the contact poles of the sliding contacts (906a and 906b) of the mini slide (906c). A magnet (904) is attached to the pull side of the disc segment, which magnetically adheres to the front side of the tube (RST, see Fig. 99) which is closed except for the cable feed-through hole, as a stop after the cable has been pulled out. A rubber cord (GBR) is used as the cable return spring, which is attached to the opposite pull side of the mini slide. The automatic cable retraction by the return spring (GBR) is triggered by pulling a rod (911, Fig.99) which is an extension of the rubber cord on the side of the sliding surface frame (102B) opposite the pulled-out cable and is guided in a guide hole (910) and to which the rubber cord is attached (e.g. via nuts 912, whereby the rod has a corresponding threaded attachment). The other end of the rod protrudes from the sliding surface frame (102B) and has a corresponding button (902aL in Fig.99) for pulling out. (Pulled-out position is shown in dashed lines). The length of the rubber cord (GBR) is such that after a certain length of pulling by pulling out the rod (911), the rubber cord (GBR) is fully tensioned and can no longer be stretched, whereby the pulling path of the rod continues directly to the cable fastening of the disc segment (904) and its magnetic adhesion to the front of the pipe breaks, whereby the rubber cord guides the cable back into the pipe guide by means of the mini slide (906c), ditto the pulled out rod. The minimum tension of the rubber cord (GBR) is such that when the rod is pushed in and the cable is pulled in (909 L for the left side and -R for the right side), the rubber cord is still tensioned . *As shown in Fig.98, the plug contact connection of the cable has a corresponding terminator (909b) which rests on the pull-in hole (909) of the cable. *Fig.98, Fig.99, Fig.100, Fig.101 (contact tap 906), Fig.102 (cable centering designed as screwable socket parts 905a and 905b) illustrate a further

Alternative using each*äxrieis £ig|
Pipe for each connection pole, where in the reference designations (R) and (L) for right and left side (respectively a
and b) for the cable cores, the two-pole connectors a
and b are used.

*In Fig.104, on opposite sides of the
Frame for the sliding surface (102B) two operating elements arranged opposite each other: on one side a
button (TN), on the other side a toggle switch (908S)
with 3 positions (or alternatively a potentiometer) for setting a reference voltage, which corresponds to a specified contact pressure for the front cushion for the described
Adjusting the height adjustment of the rear cushion
The circuit for this is shown in Fig.103: The
Supply voltage (e.g. supplied by a mains power supply {&Ngr;}, via connection STK102 on the side of the
Longitudinal bar 102 inserted into the frame of the sliding surface)
is fed to the control electronics via two poles,
This supply is controlled by the TN button (as a normally closed contact
executed) can be interrupted at the touch of a button. The supply voltage can be varied by the control element and is selected so that it is above the value of the actual supply voltage in all variations (e.g. switchable by means of a Zener diode circuit). *The 'in Fig.103
The circuit shown is on a small board
below the sliding surface support (in frame 102)
housed, with the cable guide tubes for right
and left cable (909L and 9Ö9R) to the outputs of the
Circuit are connected accordingly (bL,bR respectively
parallel for left and right cable, ditto aL,aR = GND
for right and left cable, see also option according to Fig.löO for interconnection if/wires in single-pole cables
*Fig.lö6: see Fig.112, below. *Fig.lO7; shows the use of the cushion device on a
multi-dimensionally curved keyboard (8): The support surface {99} for the sliding support of the front cushion (1-V) is
a sloping palm rest strip already integrated into the keyboard in front of the keypad, over

·

·

a soft surface {930} on which _# <ier"|e^iliigeji'

*· ··· and the inclination of the hand rest strip are fitted with metal clamps (929 with bending edges 929B) adapted accordingly, whereby the underside of the metal clamps is inserted piece by piece (e.g. as a sandwich) on a support surface (103) which is placed under the keyboard, whereby the inclination and width of the hand rest strip can vary as desired over the length of the keyboard. *The side profile of the sliding support is designed in such a way that on the long side which is closest to the row of keys, the sliding surface and underside of the rail guide frame (930) converge to a point. *Fig.10S shows the electronic circuit housed under the support plates of the rear cushion (1-H) with a piezo signal generator or loudspeaker: The supply voltage set with toggle switch 908S or a potentiometer (wire bL for left slide plate, or wire bR for right slide plate, each plugged into socket 901, see Fig.69a) is fed via a voltage divider to a VCO (voltage controlled oscillator), the frequency of which is evaluated by a microcontroller in such a way that a reference value associated with the voltage value is set for the permissible weight load of the front cushion. *The reset line of the microcontroller is also connected to this voltage and generates a reset vector for each voltage interruption by the TIi key (Fig. 103) when the voltage of the microcontroller has returned (delayed via RC circuit, with discharge diodes for rapid readiness, alternatively also via external pulse generation chip). The reset vector initiates the adjustment procedure already described above in the microprocessor program for carrying out a successive approximation . ÖUT/IM are the corresponding I/Ö port signal lines of the microcontroller, BW (a,b) concerns an evaluation circuit for each slide plate for measuring the damping of the scale (cf. Lo with metal spring plate 633 in Fig.); the loudspeaker or signal generator connection of the microcontroller is not shown. *Fig. 109 shows

OC * · ft β·.

Another example of «Lie**Imo1io:£isc$ife ··· ***·

- 86 a

Height adjustment of the rear cushion (1-H), whereby an additional guide between the plate of the front cushion (100V, see also with bevel 100M) and the plate of the rear cushion (100AP) can also be omitted and can be formed directly by the spindle of the motor drive. Fig. 109 shows a corresponding design with a pair of vertical threaded sleeves (916), which are each flanged to the motor drives (M5a, M5b) and into whose internal thread a bolt is screwed, which supports the support plate of the rear cushion (100AP) (screwed tight with nuts 917). (Left: view seen by the user, right: corresponding side view). The motors each rotate in opposite directions; the spindles have correspondingly opposite threads. *Furthermore, the threaded sleeves are supported directly along the vertical wall of the lowering of the front slide plate (lööW), whereby the support is provided by cable clamps (or ties) which are fastened to the wall (1ÖÖW), and the sleeves are guided so as to be rotatable within the clamps. In order to bring the motor axis close to the wall (1Ö0W), a cutout is provided on the wall into which the motors are inserted (supported on support plate 918); the continuous motor axis is further supported by a sheet metal spring (999) on the underside of the motor fastening.

*The threaded sleeves (916) are preferably made of electrically non-conductive material, but the threaded spindles (threaded rods 915) are made of metal. Furthermore, at the point which concerns the end of the threaded spindles screwed into the sleeves, a coil (inductance 913) is placed over the sleeve (inserted into the wall or window), which is guided through the screwed end of the threaded spindle, depending on its respective screw-in depth, according to the respective height position of the

Support plate (1ÖÖAP) of the rear cushion 'bJed^dämpft is|b*.*'· The damping measurement of the immersion depth of the threaded spindles is used on the one hand to regulate the synchronous operation of the two motors M5a and M5b, which drive the support, and on the other hand to measure the height adjustment carried out in binary weights (see above). In Fig.109 and Fig.77, the two-wire connecting cable (VKBL) between the support surfaces of the front and rear cushions is also shown for connecting the electronic components housed on the support of the front cushion (e.g. L5 in Fig.80) to the circuit board (E) placed under 1ÖÖÄP. *Fig.llö shows a variant for inserting the lower _Ä strip of the sliding surface, cf. 99U in Fig.80 and &trade; ^J Fig.81 (described above). This variant is suitable

good for curved shapes of the guide slot X, as then the lower sliding surface strips can no longer be easily inserted from the side; for this purpose, hinge joints (MGL) are provided at corresponding curved points, which lie in a line (m) below the guide slot X, on the bottom surface (103) of the rail support, which allow the bottom surface to be folded down on both sides of the guide slot (with the bottom side lifted off from one support surface, whereby the bottom side 103 is placed on another support surface ^^ via a Velcro fastener, for example). This creates an insertion opening on the top, into which the curved strips of the lower sliding surfaces (99U, see Fig.80) can be placed on the support webs provided for this purpose (ST-99U, shown in hatched lines).

*Fig.lll shows a variant for the already described support device of the cushion rail guide, where y 610..sheet metal plate, 98..guide sliding elements, 99..rails, 634..support surface can be folded down via joint (630); 631, 632...pivot points of the A suspension bracket (633), where 632...locking point or suspension that can be unlocked by pulling outwards against a spring force, 103b...support

Webs of the rail strips, support. . . Sch'ieheiJ defiSifte·· ***. Plate for pivot point bearing of support surface (634). *Fig.ll2 shows a demonstration and test device for automatic stress testing of the cushion guide using the described principle of a slide plate (100DM) pulled by pull ropes for each hand side: on rail 102DM (cf. 98S), and a drive motor (MTST), whose control signals and supply voltage are transmitted in the manner described and which drives a cylinder (928) flanged as a lifting rod with a flanged ball (928) (each made of wood) via a crankshaft (924) (for better movement adjustment in elongated hole slot 925), which executes a linear movement corresponding to the wrist movement of a user, the ball resting on the front cushion (1-V) and the cylinder on the rear cushion (1-H) and executes the movements typical for the cushion movement, corresponding to the crank movement of the drive. 920..-is a swivel joint or servo for rotating the stand (plate 921) of the crankshaft, corresponding to the simulation of a pivoting movement of the arms. Fig . 106 shows an overall view of Fig. 112. *Fig.ll3 shows how the adhesion of the clamp (702) inserted at the back to the table top is reinforced by means of a removable adhesive connection on the front side of the rail support of the (102) cushion device facing the front side of the keyboard.

*Fig.ll4 uses a steel clamp (702ST) with as little spring as possible as a table clamp, whereby the clamp presses the rubber feet (GF) attached to the clamp's pressing points on the underside of the rail support (102) onto the table top and the lower part of the clamp has a fixing screw (500>) pointing upwards towards the underside of the table to generate the pressure force and presses on via a plate or an intermediate layer (PLT) between the screw end and the underside of the table top. In this variant too, the lateral anti-twisting protection of the clamp (702ST) is ensured by the interaction of the rubber feet (GF) attached to Fig. 91a.

&mdash; 89 &mdash; *· · »* ·■

described crossbars {704} (as the rubber feet of the rail support** (102) adhering to the table top), whereby the clamp is easy to assemble (because it is guided in guide slots 102-F Fig.92, Fig.91 of the longitudinal strips 102) and to disassemble again. *Fig.ll5 shows a variant in which an extendable table (ÄFL) on which the keyboard (8) is placed presses against a flat extension (DT) of the underside of the sliding guide {102} on the front of the keyboard and thus presses the sliding guide (102) against the table top (together with clamp 702).

Fig.116 to Fig.119 relate to further variants for the zero force compensation by the follow-up control, Fig.119 (above) shows a variant for the single-line longitudinal guide of the slide plate (1ÖÖ), in which the guide element is designed similarly to Fig.79, with a disk (9SS) acting as a bearing sleeve or bushing, a bolt (98b) inserted into the hole in the disk as a guide element, runs in slot X), which has a through hole for inserting a cable connection (ÄZSU, guided from bottom to top, contact... .K2Sf?), with the difference, however, that a drive wheel (98WKL) is also flanged to the bolt (98b), with which the angular rotation of the cushion is carried out via the rotation of the guide element (= bolt 98b) , and instead of the cables acting on both sides of the bearing sleeve (98S) as in Fig.79, this is only done for one pulling side on the *bearing sleeve (98S) and for the other pulling side a pair of cables is provided, which is looped (or laid) over the drive wheel (within a running groove), ie engages the drive wheel. By differential control of the pulling lengths of the cables (45R, 46R, see Fig.119 section Ä-B below) of the cable pair placed over the drive wheel (98WKL), the rotation (v) of the drive wheel or the guide element (98b) is carried out, whereby the (single) cable (or double cable A45H45R+B45H46R) attached to the bearing sleeve (98S) counteracts this in the other direction, on the other hand by further differential control of this (single) cable (or double cable) against the common unwinding or winding of the pulling cables of the cable pair on the drive wheel, the longitudinal displacement of the guide element (with mutually tensioned cables ) is carried out. In the figures Fig.116 to Fig.119, the meanings are: 45R,46R. .. .Cable pull pair of the drive wheel for the slide plate of the right cushion, ditto 45L,46L for the left cushion; 45H46R...Cable pull of the bearing sleeve (98S) for the guide element of the right cushion, ditto 45H46L for the left cushion, whereby two variants are provided for the cable pull attached to the bearing sleeve (98S): *In the first variant, the differential control of the cables of the cable pull pair attached to the drive wheel is carried out directly by the drives which control the

individual cable pulls of the cable pull pair ziM "ZJietrJe MeV ? %»&idigr;**\

Longitudinal movement of the guide element, therefore a spool roll with drive is provided for each of the two cables of the cable pull pair assigned to the drive wheel (cf. six drive rolls in Fig. 117). In the second variant, a common winding up by a common drive is provided for the outgoing cable length, as is the case for the returning cable length, according to the principle of a winding roll, as is standard for the transport of print heads on typewriters and printers, whereby the cable length of the incoming cable unwound on the winding roll corresponds to the length of the returned cable wound up. In order to enable this principle to be used in the specified design in conjunction with the drive wheel rotation, whereby the incoming cable &zgr;-Eg. the cable pull pair on the drive pulley and the returned cable pull corresponds to the cable pull on the bearing sleeve (disk 98S), the cable pull on the bearing sleeve (98S see also 45H46R in Fig.117) is also designed as a double cable pull (A45H46R-i-B45H46R, see Fig.119), but without differentiated cable length control, but with parallel processing of always equal cable pull lengths for the cables of the double cable pull. In Fig.117, the option for the deflection (OP) of a double cable pull with pairs of deflection pulleys (UR + OP) is also shown (cable pulls shown in dashed lines). The separating bar ({XM} Fig.119) for separating the cables connected to the drive wheel is then perforated at the points where the cables are deflected ( at the ends of the guide lines of the right and left cushions); guide slot X is shown in dashed lines in Fig.117. Due to the separating bar {XM}, the following structure results for the guide element: a pin or bolt inserted from above into the guide slot {X} with a drive wheel flanged underneath and the drive wheel mounted underneath in a corresponding bushing or perforated disk.

*&Igr;&eegr; preferred version is for des*lföh*rJin&seJ.ömeRjE:*"*·

·* *·· ·· ··· each cushion is provided with a drive (ML, MR for left and right cushions in Fig.118a), the drive shaft of which drives a pair of jointly driven winding rollers (cf. Ä-roller and B-roller mounted on a common axle or coupled via a belt drive, in Fig.118a), whereby on the two kickel rollers of a drive>, each of which (cf. Ä-roller and B-roller in Fig.118a) is assigned to a pair of cables of the cushion concerned, a cable from the pair of cables (double cable) of the bearing sleeve is wound as the outgoing cable and a cable from the pair of cables of the drive wheel is wound as the return cable, and the cables of each pair of cables are spooled synchronously by the common drive of the two winding rollers. If the cable lengths fed to and returned from the guide element for each cable length pair, each consisting of a cable pull of the drive wheel and a cable pull of the drive wheel bearing (bearing sleeve 98S), are wound and driven on a common winding roller, then the differential traction cable influence on the cable pair of the drive wheel takes place via pressure rollers provided in addition to the winding rollers, which are actuated by an electric motor or electromagnetically, whereby this takes place via each cable of the cable pair by a pressure roller with a separate drive (electrically controlled differential control) or by a common drive with mechanical coupling of the pressure rollers (mechanical differential control). Further details are explained below in Fig. 116 to Fig. 119; Variant according to Fig.119 relates to a design in which the traction cable attached to the bearing sleeve is designed as a double cable pull (A45H46R and £45H46L) with associated drives ML (for left cushion) and MR (for right cushion) according to Fig.118a; the lifting magnets with the pressure rollers DR perform an electrically controlled differential control (HMGLa and HMGLb for left, or HMGRa and HMGRb for right cushion) with the detailed HMG for the pressure rollers shown in Fig.118c (below), whereby the lifting magnets HMGLb and HMGRb can be omitted,

if a mechanical differential control is used, as shown in Fig. 116a, for example, with pressure rollers (DR) mounted on a common bearing mount (cf. sheet Fig. 116b), which press the cables on both sides of the cable pulleys of the respective cable pulley pair within variable sag loops (supported against support rollers SR) by common displacement of the pressure rollers, or asymmetrically displace the sag, starting from a symmetrical sag that is the same for both cable pulleys, so that the sag of one of the two cable pulleys increases and that of the other decreases, in accordance with the motor-driven displacement of the pressure rollers. The asymmetrical displacement of the sag then causes a corresponding rotation of the slide plate (100) via the guide element bolt (98b) to which the drive wheel of the respective cable pulley pair is flanged {correspondingly. Fig.119). In a simplified version, it is sufficient to control the sagging on only one cable of the cable pair (however, with the same roller dimensions , this only results in half the rotation angle control for the cushion). In addition to the possibility of moving the pressure rollers using an electric motor-driven lever (cf. lifting attachment AP in Fig. 116a and 116b) or using a lifting magnet, it is preferred that the movement is carried out by a plunger coil (see example, corresponding to conventional loudspeaker production), to which a lifting rod (with attack point AP) is flanged accordingly to control the movement of the pressure rollers. Fig.116c shows a proposal for a spring tension suspension of the motor drive (M together with drive rollers hidden behind sheet metal, see Ä-roller and B-roller in Fig.118a), where ABL is a side plate of a sheet metal frame in which pins of another inserted sheet metal frame (INBL) are slidably inserted through slotted hole guides (LS) on opposite side plates engaging in the slotted hole guide and the inner sheet metal frame (e.g. via the pins) is held against the outer one (ABL) by tension springs in a direction against the direction of pull of the traction cables (see 45R to B45H46R; R

for the right, ditto L.. for the left in further *FiLgfere$ 3f Mfigs· the slotted guide is pre-tensioned, whereby the inner frame (INBL) is used as a chassis for fastening the drive (M) of the relevant cable pulls for one side of the cushion. In Fig.117 the option is shown/ in which all the cable pulls are wound on spool rollers (e.g. pre-tensioned into a rest position by spiral spring force), whereby instead of the six drives these can also be replaced by the arrangement according to Fig.118a; SP....dividing line between the range of motion of the right and left cushions. For the drives according to Fig.117 e.g. the inductance of the cable being wound up can be measured directly by gripping rollers (URLM, via their axis) and the axis of the relevant winding rollers, for the variant according to Fig.118a the coupling of a tachogenerator (or optical disk) to each of the two drive motors and/or damping measurement according to ^! ¥egaufnehmer according to Fig.45 is preferred. The controlled stroke range of the lifting magnets is measured, for example, via their inductance or just via the sensory measurement of the cushion rotation (cf. diagonally opposite measuring points of the cushion guide for the transverse direction displacement in the previous part of the description) and transmitted via the cable contact (from the slide plate of the cushions to the motor control). For the embodiment example according to Fig. 119, the cable pull contact on the guide element for a contact point (K2SR) is made by insulating the disk acting as a bearing sleeve and a fastening pin (98 BS) inserted into the disk (jewels) for fastening the cable pull (or double cable pull) with corresponding passage of the cable pull contact to the slide plate according to ohsri (K2SH) and the further measure that the bare cable pull pair, which is laid around the drive wheel, forms a contact with the electrically conductive drive wheel, which is continued ( contacted) via the axis of the drive wheel (98b) to the slide plate (with solder connection KlSR). So that the two cables of the double cable pull attached to the bearing sleeve do not get tangled, a separating web (XM) is provided, which is 1-along the center line of the guide slot of the longitudinal guide

ing line of the sliding ruler and is placed on the bottom side of the sliding ruler, and its height is such that , on the one hand, the cables set lower on either side of the separating web (XM) by the fastening pins (98 BS) are separated by the separating web and, on the other hand, the disk which forms the bearing sleeve (98S) of the guide element pulled by the cables can still slide easily over the web (XM) without coming into contact with the web. Fig. 119 also shows (below): section CD (bottom middle) relates to the insulated bearing disk for the rotation axis of the drive wheel, which also forms the guide pin (98b) (slides in guide groove X); section AB relates to the direct top view of the drive wheel with optional protective plates (ZBL) to prevent the cable from slipping, for example. the tension spring retainer (SPF) of the drive (see Fig.116c) is loosened (assembly aid). Fig.117 concerns the special case where the drives for both sides of the cushion are on the left-hand side in order to keep the sliding ruler of the cushions free on the right. This requires the deflections (UR) shown. If the guide line (or slot {X } ) has radii, then rollers are provided at the corresponding bends on both sides of the guide slot in order to guide the cables according to the bends. Fig.118a shows a suitable housing for covering the drives and control electronics, which is preferably transparent and placed on a base plate extending over the entire length of the sliding ruler; ASS... concerns the required distance for the freedom of movement of the left arm and can also be used to accommodate a control panel (e.g. capacitive keypad, etc.). Fig.118c concerns detail KG, a proposal for the centering of the traction cables via spring-loaded balls (KG) with ZS... traction cables, in addition to or as an alternative to a centering guide of the traction cables by means of rollers. Other special features are; The use of the pressure sensor (scale) explained in the previous part of the description for measuring the hand or arm support pressure should continue to be

use the rule that the readjustment of the movement of the motor drive is only switched on when the hand or arm is resting on the cushion, as otherwise the control loop would be open. In a further development option, if the sensory statement that the hand or arm is not resting on the cushion , the control is not switched off but rather uses a further sensor which is present in addition to detecting the displacement path of the cushion (cf. sensor in the VSP game or vectorial pressure sensor in the previous part of the description) and which also indicates the position of the hand and/or arm using sensors when the hand or arm is not resting on the corresponding cushion and this sensory position display is used to continue the control for the follow-up control of the cushions. Depending on which sensor type is used (optical, inductive or capacitive using sheet metal electrodes), the sensor is attached to the front or rear cushion . Fig. 97 shows an example of the rear cushion, where e.g. optical reflection meters are mounted on both sides of the cushion support surface (lOOÄP) at the side (PS) and/or at the rear (PSH at the corners of the rear edge of the support surface) to scan the contours of the arm placed on it, whereby, for example, the front and rear cushions are each equipped with a sensor to generate a signal indicating whether the hand or arm is placed on it or not, and are designed with a sensor-monitored displacement play (VSP) and, in addition to a large number of possible combinations for the control, the following variant is preferred:

a) If the hand rest on the front cushion is sensor-confirmed, then the control of the cushion movement of the front cushion is carried out independently according to the sensor within the displacement play (VSP) of the front cushion and ./ the control of the cushion movement of the rear cushion is carried out independently according to the sensor within the

Displacement play (VSP) of the rear · ki-sseras ,&idigr; ***. . '».I "·.

b) if the hand rest on the front cushion is not confirmed by the sensor and the arm rest on the rear cushion is still confirmed, then the control of the cushion movement of the front cushion and the rear cushion is carried out according to the sensor within the sliding play (¥SP) of the rear cushion,

c} If the hand rest on the front cushion and the arm rest on the rear cushion are not confirmed by the sensor, the sensor on the rear cushion switches to the contour scanning of the arm resting on it and the front cushion and rear cushion are controlled according to this contour scanning so that the sensor scanning of the arm contour always lies within the contour limit of the scanning, i.e. the relevant cushions follow the arm position. This is done, for example, by the reflection meters arranged on both sides of the rear edge of the slide plate being arranged at a distance that is dimensioned (and made adjustable, for example, with Velcro fasteners) so that both reflection meters are reflected by the arm when the arm is centered by the hollow of the air cushion. If this is no longer the case, the arm moves relative to the reflection meters in such a way that at the relevant boundary area the reflection meter in question no longer reflects the arm, which results in an asymmetry in relation to the other reflection meter (relative evaluation) that is balanced out by appropriate movement control of the cushion, whereby the cushion follows the moving arm. It is evident that instead of optical sensors, capacitive sensors or inductive sensors can also carry out this relative evaluation.

In addition to this option, the contours of the hand can of course also be scanned for the front cushion, with corresponding independent control of the front cushion.

A variant with a StedeKlerffehirenJ xiacih· *·

above steps a, b and c contains the following electronic components: for each front cushion, a small circuit board with four parallel resonance oscillators for four scanning coils for measuring the damping via metal corners at the corners of the sliding frame of the cushion support described in the previous part of the description (with play VSP), an oscillator for measuring the contact force on the corresponding spring plate and a microprocessor circuit for the evaluation and measurement signal transmission to the two tapped connections of the guide element of the lower slide plate (see also Fig.95a and Fig.95b). The slide plate of the rear cushion has identical components. The control electronics, which are separated from the slide plates and fed with sensor signals via the traction cables, contain, in addition to the reception and evaluation electronics and the control loop control of the drives, the previously described control for the level adjustment between the front and rear cushions, which in this version is not carried out directly between the support surfaces (cf. M5a and M5b in Fig.109) but via spindle adjustment of the level between the front {99} and rear ({99H}, cf. Fig.97) sliding ruler (cf., e.g. also on a vertical guide wall (ie {704} in Fig.87c corresponds to {1ÖÖW} in Fig.109), whereby two or more of the described sleeve-threaded spindle combinations connect the two sliding rulers at their vertical or inclined sliding wall (cf. {1OOW}}) at a corresponding support distance from one another. Furthermore, provision is made for the motor-driven longitudinal displacement of the rear Cushion (armrest behind the wrist) to create a path table that, under the health aspect of an ergonomic hand position, as already possible with y progressive keyboards (see keyboard from Microsoft...registered trademark), provides a suitable path control of the rear cushion as a function of the displacement and/or rotation of the front cushion according to an electronically stored function. Both for the front hand rest cushion-

sen, as well as for the rear armrestlsfjsae^i can··· "**· ih Glilil it idih tib

identical sliding rulers with identical drives can be used, whereby the two sliding rulers are adjustable in their relative height using the spindle control described (see also the previous part of the description). Another variant is to also use the rotation scanning of the cushions as a signal input function, e.g. in the following application: In a simplified version, the incremental pulse generation during cushion displacement (e.g. to control the cursor functions) is coupled with the hand rest of the other cushion, ie when the hand is lifted from the other cushion, the incremental pulse generation is prevented so that the cushion can be brought into a desired starting position before each pulse chain. An alternative to this is to generate a short rotary movement with the other cushion before pushing the cushion and to decode it accordingly, in which case the following sequence of incremental pulses generated by moving the corresponding cushion is not evaluated and the evaluation is switched back after a certain (retriggerable monostable) trigger time of the pulses has elapsed. Advantages of the invention: The basic solution variant according to claim 1 already has the advantage that the cushion support can be manufactured very cheaply, has the best sliding and movement properties and adapts to the hand position when typing; and above all can be designed in a wide variety of stages, starting from a particularly inexpensive version up to particularly sophisticated designs.

*In a compilation, this refers to a cushion for hand rests for writing keyboards, which has a support cushion sliding on a sliding surface for each hand (in an optional development with identical sliding and guide point), with the following optional features to be used; *skaterunner (sliding-skid-motion) cushion support adapted to the hand movement during typing by small, separated sliding surfaces *exact height adjustment of the cushion for the hand rest with floating granulate, *pressure relief of the rested hand by an additional integrated wrist movement-optimized armrest, *pressure relief by converting potential energy into kinetic energy, in particular by using a tilting cushion for the rear cushion, *the sliding strips are easy to grow due to the interchangeability of the sliding surfaces for the rail guide, *the rail guide can be designed in multi-dimensional curvature for any keyboard ergonomics, ^electronic measurement of the target pressure of the hand (also during typing) and automated adjustment for leveling between the hand rest cushion and the armrest, thus always optimal conditions are electronically determined before the user notices this too late due to long-term typing in the event of a possible misalignment (electronic sensitization fulfills a health monitoring function of the product), *Motion amplifier by means of a zero-force servo control of the cushion movement with sensor scanning of the hand movement during typing, through appropriate movement scanning of the cushion movement, e.g. through cable scanning (movement play) of the cushion movement or pressure scanning, or both (e.g. via spring travel or inductive scanning of flexible bands provided with metal mesh) ^Problem-free signal feed,,· Cheap version with integrated cable retraction and various combinations of design variants according to user requirements, *Best adaptation option to modern ergonomic keyboard shapes, ^Quick assembly and disassembly using cutting clamps, ^Little space required, since the cushion support takes up most of the area outside the table top, *End of description.

Claims (52)

Sayings ·&iacgr;·. I *« 1. Support device for users of keyboards, especially electronic keyboards (e.g. for computers, data entry and typewriters and telephones) or support device for general manual work, with a cushion-supported hand rest, whereby separate cushions can be provided for the right and left hand, and for keyboard use the cushions are placed separately in front of the keyboard front or integrated into the keyboard, and with a sliding guide in the longitudinal direction as a feed, which is located in front of the keyboard front and has a guide parallel to the keyboard front, on which the respective cushions are guided so that they can move along the keyboard front with a further possibility of movement of the cushion in the direction of the keyboard front, characterized by the following features for the sliding guide: a) the sliding guide in the longitudinal direction consists of small support surfaces separated from one another, which are arranged as sliding elements (i.e. sliders, or balls or rollers or wheels) directly on the underside of the cushion in question or on another separating support (sliding plate) of the cushion and slide on a plane forming the sliding surface (sliding surface),/ b) the sliding surface is designed as a strip corresponding to a ruler plane, which is aligned in the longitudinal direction of the keyboard and on which the small, separate support surfaces of the sliding elements of the respective cushion slide, whereby the Sliding surface can also have a aiekrdi^iensjpnaj.'e wolburfg c) the sliding surface has a guide line in the longitudinal direction parallel to the keyboard front, which guides at least one sliding element as a guide element so that it can be moved along the guide line, whereby if necessary, this guide can have a play in movement and, deviating from a straight line, can also have radii of curvature, d) the cushions sliding on the sliding elements are supported in a way that prevents them from being pulled out. 2. Support device according to claim ₁₇ , characterized in that the further possibility of movement of the cushion in the direction of the keyboard front is carried out by a further displacement device by means of sliding surfaces. 3. Support device according to claim 1, characterized in that the further movement of the cushion in the direction of the keyboard front is carried out by a rocking movement of the cushion. 4. Support device according to claim 1, characterized in that the further possibility of movement of the cushion in the direction of the keyboard front is carried out by a further displacement device which is mounted on balls or rollers or wheels. 5. Support device according to any of claims 1 to 4, st with a feed which is located in front of the keyboard front and, in addition to a guide for the cushion which is parallel to the keyboard front, has a sliding guide in the transverse direction to the keyboard front, characterized by the following features for the Cushion guide: .:., ; ·..· ...* .. ... a) the sliding guide for the transverse direction consists of support surfaces separated from one another in terms of area, which are arranged as sliding elements {these are sliders, or balls or rollers or wheels) for the transverse movement directly on the underside of the cushion in question, or on a further separating support (upper slide plate) of the cushion, whereby the sliding elements slide on a further upper sliding surface and this upper sliding surface rests on the separating support which carries out the sliding guide in the longitudinal direction {= lower slide plate), and the sliding guide for the longitudinal direction on the lower sliding surface {= ruler plane of corresponding strip) slides on further support surfaces separated from each other, b) the further, upper sliding surface has a transverse guide line in the transverse direction to the keyboard front, which guides at least one sliding element as a guide element displaceably along the transverse guide line, whereby this guide can have a play of movement if necessary, and the sliding surface can also have a multi-dimensional curvature, c) the cushions sliding on the sliding elements are supported in a way that prevents them from being pulled out. 6. Support device according to claims 1 to 5, characterized by the following features for the cushion guide: The guide line of the sliding elements is formed in a single line by a guide slot or protruding guide web in the longitudinal direction of the strip. 7. Support device according to claims 1 to 5, characterized by the following features for the cushion guide: the guide line of the sliding _elements is formed by guide _slots or protruding guide webs _cut lengthwise along the strip. 8. Support device according to claim 6, characterized by the following features for the cushion guide: only one sliding element is guided through the guide line and at the same time forms the pivot point of the cushion, its rotation on the sliding surface. 9. Support device according to claims 1 to 5, whereby the guidance of the sliding elements is carried out by means of an embedded guide slot, characterized in that the withdrawal protection of the cushion is formed by t a sliding plate which is enclosed by the guide slot and is secured against removal by hands of the sliding surface which protrude on both sides of the center line of the guide slot. 10. Support device according to claims 1 to 8, wherein the sliding elements are guided by a protruding guide web, characterized in that the cushion's withdrawal protection is formed by a sliding plate which is enclosed by protruding edges of one or more parallel guide webs and is secured against withdrawal, or by several sliding plates which enclose a guide web on both sides (also in a clearance). 11. Support device, in particular according to claims 6 or 5, or claims 9 or 10, characterized in that only the sliding element is protected against withdrawal, which * simultaneously forms the guide and the pivot point, whereby the other sliding elements only provide sliding support against the sliding element protected against withdrawal. 12. Support device according to claims 1 to 11, characterized characterized in that the guide line runs entente along the longitudinal center line of the ruler strip. 13. Support device according to claims 1 to 12, characterized in that a longitudinal side edge of the ruler strip is included in the movement guide of the sliding elements directly or as a stop. 14. Support device according to claims 1 to 13, ,. with a sliding guide as a feed, which is located in front of the keyboard front and, in addition to a cushion guide parallel to the keyboard front (lower sliding surface) in the lower slide, also has a cushion guide in the transverse direction to the keyboard front (upper sliding surface), characterized in that the sliding guide of the cushion on the upper sliding surface is designed in multiple lines in the transverse direction to the keyboard and that the sliding guide of the lower carriage on the lower sliding surface is designed in one line with a common pivot point and guide point along the guide line running in the longitudinal direction of the keyboard. 15. Support device according to claims 1 to 14, with a single-line guide, characterized in that the tilt support of the cushion underside, or, if applicable, its slide plate, is carried out by the sliding elements which are separated from one another in terms of area and which form the corner points of the support surface, against the withdrawal protection of the guide element arranged within the support surface, which at the same time forms the pivot point. 16- Support device according to Anggruqheii.X· &is 14»'...' with a multi-cell guide, characterized in that the tilt support of the cushion underside, or if applicable its slide plate, is carried out by the sliding elements which are separated from one another in terms of surface area and which form the corner points of the support surface, against a pull-off protection which is formed directly from the number of sliding elements. 17. Support device according to the preceding claims, characterized in that the cushion is guided on a slide plate and connected to the slide plate by elastic and/or flexible bands i is. 18. Support device for users of keyboards, especially electronic keyboards (e.g. for computers, data entry and typewriters and telephones) or support device for general handicrafts, with a cushion-supported hand rest, whereby separate cushions can be provided for the right and left hand, and for keyboard use the cushions are placed separately in front of the keyboard front or integrated into the keyboard, and with a movement guide for the cushions, or support device according to claims 1 to 17, characterized in that a displacement sensor is provided for the cushion of one hand to register the displacement and that a device for generating an activation signal, sensory via the cushion {e.g. by relief, or displacement against a spring contact, or pressing in certain positions, *e£a..)* and/or directly by an actuating button in the cushion's area of action, and that the signal of the kfeg sensor is linked to the activation signal in the following way by control electronics: a) the key signals are looped through the control electronics for evaluation and conversion, or connected to the keyboard input of the computer, b) optionally, {if used in software), are the control electronics the mouse signals for evaluation and conversion looped through, or connected to the mouse input of the computer, c) a valid activation signal triggered by one hand (e.g. left hand) which affects the activation signal generation, in conjunction with a movement of the cushion along the keyboard by the other hand (e.g. right hand), controls the following sequence in the control electronics: d) a key press made at the time of a valid activation signal (e.g. also with the left hand) is intercepted by the control electronics and not evaluated by the computer software and decoded by the control electronics as assignment information, which concerns the intended use of a sequence of incremental pulses generated by moving the cushion with the other hand, * e) according to the decoded intended use of the incremental pulses, the incremental pulses are directed to the computer's software (e.g. via keyboard and/or mouse connection) and processed according to the intended use, f) The activation signal is reset by pressing a key and/or by expiry of a time interval if, immediately after the activation signal has been triggered, no key relating to the assignment of the activation signal (ie indication of use) has been pressed within a certain time. 19. Support device according to claim 18, characterized in that the following keys are coded for the activation signal for the following purposes: a) the X key for line-by-line image marker movement, which corresponds to a mouse or cursor movement in the X direction, b) the Y key for column-by-column image marker movement, which corresponds to a mouse or cursor movement in the Y direction. 20. Support device according to claims 18 or 19, characterized in that for the decoding of the purpose of a valid activation signal, the cushion movement is evaluated against a path overcoming decoding (e.g. in the transverse direction and/or deformation of the cushion and/or stop coding). 21. Support device according to claims 18 to 20, characterized in that a capacitive length measuring system is used as the displacement sensor for the cushion displacement, consisting of two lengthwise scanned Displacement length ( longitudinal and/or transverse) aligned electrical conductors, which is capacitively bridged by an electrode attached to the sliding element of the cushion bearing, whereby the displacement length of the cushion is measured as a capacitance value between the conductors in the form of incremental im- pulses that are capacitively encoded over the displacement path _# dnirc5i* FcTiHijg.ebung of the conductor spacing (e.g. according to a sawtooth pattern) are measured. 22. Support device for users of keyboards, especially electronic keyboards (e.g. for computers, data entry and typewriters and telephones) or support device for general manual work, with a cushion-supported hand rest, whereby separate cushions can be provided for the right and left hand and for keyboard use the cushions are placed separately in front of the keyboard front or integrated into the keyboard, and with a movement guide for the cushions, or support device according to claims 1 to 21, characterized by the following features: a) the motion control of the cushions has a motor drive and a sensory pressure or movement sensing of the cushion blocked by the coupling of the drive (e.g. scale, pressure sensor, path detector in a displacement game, optical sensing, capacitive sensing, inductive sensing, ohmic sensing), b) the movement forces measured by sensors on the cushion against the coupling of the drive control the drive in such a way that the drive compensates for the movement forces occurring on the cushion against the hand. ^ 23. Support device according to claim 22, characterized in that the sensory pressure or movement sensing of the cushion blocked by the coupling of the drive by a small {free) movement play that can be moved by hand ¹ within the drive and that the movement or displacement of the cushion within the free movement play against the coupling of the drive is sensed by sensors and controls the drive in such a way that the drive compensates for the manual displacement of the cushion within the free movement range. 24. Support device according to claim 22 or 23, characterized by the following design of the motor drive for the cushion movement: The cushion movement is driven by cables attached to the relevant sliding device of the cushions (directly on the cushion or on slide plates or a relevant sliding element of a slide plate), which are stretched on both long sides of the guide line and driven by a motor. 25. Support device according to claim 24, characterized in that the cables are current-carrying, the voltage supply with superimposed control or data signal transmission to electronic components of the moving cushion support being carried out via the cables. 26. Support device according to claims 1 to 25, characterized in that a sensor measurement is carried out by means of a fre/electromanual damping measurement on the relevant electrically conductive surface (e.g. metal sheets) by means of a coil, whereby in the case of a large number of sensors, each coil is fed by its own measuring frequency with corresponding filter properties (e.g. parallel resonance circuit), characterized in that the sensor for one or -Pll- ·· · several (depending on the version) _### !of the measuring applications are used: a) generating an activation signal by decoding the cushion movement or deformation or the contact pressure, b) Detection of directional components for the cushion displacement, c) Detection of directional components for the cushion movement, d) Detection of directional components for the cushion deformation, e) Measurement of the pressure of the hand on the cushion in a vertical direction, whereby the electrically conductive surface is resilient, f) Measurement of the pressure of the hand on the cushion in a lateral direction, whereby the electrically conductive surface is resilient, g) Measurement of the immersion depth of (electrically conductive) threaded spindles screwed into (non-electrically conductive) sleeves, which are used as motor-driven ^v - driven linear drives a corresponding Adjust the pillow position and/or pressure conditions on the pillow, h) Measurement of the unwound length of the traction cable via the rotation of the winding rollers, whereby the winding rollers have a spiral spring as an inductance, which is > laterally damped by an electrical surface, depending on the respective size of the spiral spring, i) Measurement on metal mesh belts or pillowcases to locate the movement of the belts or, pillowcases. .;.. ; ·..·...· .·*·.·* 27. Support device according to one of claims 6, 8 or 14, characterized by one of the following features: (a) that a slide plate is provided for each cushion as a support surface, and/or (b) that the sliding elements ₇ which support the carriage plate against the guide element of the pivot point of the carriage plate on the sliding surface are designed as pills (sliding pills) inserted vertically into the underside of the carriage plates, which slide with their rounded cylinder side on the sliding surface, wherein the sliding pills have a rotation axis for rolling or are firmly inserted into the carriage plate, and/or (c) that the stop for the rotation of the slide plate is limited by the side surfaces of the sliding pills on a projecting longitudinal edge strip of the sliding surface, whereby the sliding pills are inserted at an angle which is dimensioned such that the side surfaces of the pills are flush with the inside of the longitudinal edge strip when the slide plate is rotated in and/or, (d) that the slide plate of a cushion has an angular bevel on its long side facing the front line of the keyboard, which is dimensioned such that when the slide plate is rotated in, the long side in question is aligned parallel to the front line of the keyboard for the purpose of saving space, so that the sliding surface strip can be brought closer to the keyboard ' 28. Support device according to claims 1 to 27, with a deformable, flexible or twistable material for the cushion, wherein the cushion in question is supported on its support surface along a is attached to a rocking line aligned transversely to the rocking direction (movement) of the »bite with mobility of the cushion in relation to the keyboard and/or in a lateral direction, characterized in that the rocking line consists of a Velcro connecting strip attached between the underside of the cushion and the support surface. 29. Support device according to claims 1 to 28, with a deformable, flexible or twistable material, whereby the cushion in question is attached to its support surface along a rocking line aligned transversely to the rocking direction (direction of movement) of the cushion with mobility of the cushion in the direction of the keyboard and/or in a lateral direction and the cushion consists of a bag filled with gas (e.g. air) or with a liquid (e.g. water), characterized in that its pressure support for the hand or arm rest is made up of two components: (a) the filling pressure and (b) a frame for the bag, which consists of a pillowcase stretched to form a frame with adhesive tape fasteners. 30. Support device according to claim 29, characterized in that the frame of the cushion (tension frame) consists of a cover placed on one side of the cushion, the protruding sides of which are folded over onto the opposite (still open) other side of the cushion, the protruding sides being dimensioned such that a window remains free on the relevant side, into which a fleece material (e.g. velour) is inserted as an adhesive to a Velcro fastener * connection, which is fixed to the inside of the folded side parts of the cover. 31. Support device according to claim 30, characterized characterized in that the fleece fabric side (window side) of the cushion is used as a support surface for the hand or arm and that the side of the cushion opposite the fleece fabric window is used as
Support surface with the rocker line is used. 32. Support device according to claims 28 to 31, characterized in that the cushion is placed with its underside in a depression which is formed by the stitching line adhering to the support surface of the cushion on the side of the cushion which faces the keyboard and a raised area (e.g. by means of a strip on
flat surface or trough), which provides the user
is directed towards. , 33. Support device according to claims 28 to 31, characterized in that the cushion is placed with its underside in a depression which is formed by the rocking line adhering to the support surface of the cushion on the side of the cushion which faces the user and by an elevation (e.g. by means of a strip on a flat support or depression) which is opposite the keyboard
is turned towards. 34. Support device according to claims 28 to 33, characterized in that the upper hand or
The armrest surface of the cushion forms a recess. 35. Support device according to claim 34, characterized
characterized in that the hand or arm rest is covered with a leather saddle pad and that the cushion cover is made of fabric. 36. Support device according to claim 28 to 35, characterized
characterized in that the cushion consists of a foil
-Tubular film bag (e.g. PA/&Rgr;&Egr;) is manufactured, whose longitudinal seam or longitudinal fold in the area of
Hand or arm rest, so that through the
Tension pressure of the cushion the film on both sides of the - P15 - Fold pulled apart, bgw, t|est3;a££fc* is** 37. Support device according to claim 28 to 36, characterized in that the cushion is made from a film-tubular film bag (e.g. PÄ/PE) and has a sound-insulating coating. 38. Support device according to claim 28 to 37, characterized in that the sound-insulating coating is made by means of a fleece tape which is ironed onto the film with heat-soluble adhesive. 39. Hand support device according to claims 1 to 38, characterized in that a foil cushion is used which has at least two different &idiagr; has weld seams, the outermost of which is a separating seam welded and separated by means of a hot wire, to which one or more internal seams, which continue to hold the side surfaces of the film bag together, are welded. 40. Support device according to claims 1 to 27 or claim 39, characterized in that the cushion consists of a small, flat foil bag which is filled with granules floating in a liquid. 41.Support device according to claim 40, characterized in that the granulate is a spherical plastic granulate made of soft plastic. 42.Support devices for keyboards, in particular electronic keyboards (e.g. for computers, data entry and typewriters and telephones) or support devices for general handicrafts, with a cushion-supported hand rest, whereby separate cushions can be provided for the right and left hand and for keyboard use the cushions are placed separately in front of the keyboard front or integrated into the keyboard, and with a movement guide for the cushions, or support device according to claims 1 to 41, characterized in that the respective cushion, which is assigned to one hand (each), consists of several cushions arranged one behind the other (in a row from the keyboard front to the user), which can be moved directly by shaping and/or sliding movement and/or by guiding movement of the cushion support in appropriate coordination with one another. 43. Support device according to claim 42 with a front cushion provided for one hand (each) and further cushions arranged behind the front cushion, characterized in that {a) that two cushions are provided for each hand are, _/ (b) that the front cushion (located directly in front of the keyboard) is designed as a hand rest cushion (for resting in front of the wrist) and the rear cushion as an arm rest cushion (for resting behind the wrist), (c) and that the coupling of the displacement path of the rear cushion to the ver&chi'^bew^g* dss front cushion through a fixed static connection between front cushion and rear cushion on common movement guide- 44. Support device according to claim 42 with a front cushion provided for one hand (each) and further cushions arranged behind the front cushion, characterized in that (a) that two cushions are provided for each hand, (b) that the front cushion (located directly in front of the keyboard) is designed as a hand rest cushion (for the hand in front of the wrist) and the rear cushion as an arm rest cushion (for the hand behind the wrist), (c) and that the coupling of the displacement path of the rear cushion to the displacement path of the front cushion by means of a motor drive for the front and/or rear cushion takes place via electronic control of the displacement path on a separate motion control, wherein at least one of the following variables is used as the actual-setpoint comparison for the control; cljthe displacement path of the front cushion regulates the displacement path of the rear cushion, and/or c2) the displacement path of the rear cushion regulates the displacement path of the front cushion, and/or c3) a sensory pressure or movement sensing of the front cushion regulates γβωσ. displacement of the front cushion, and/or c4) a sensory pressure or movement detection of the front cushion regulates the displacement of the rear pillow, and/or .' **·* ' ·.,· ...» ,.* ...* c5) a sensory pressure or movement sensing of the rear cushion regulates the displacement path of the rear cushion, and/or c6) a sensory pressure or movement sensing of the rear cushion controls the displacement of the front cushion. 45. Support device according to one of claims 42 to 44, characterized in that an adjustable level setting is provided for adjusting the (vertical) height difference between the support of the front and rear cushions for the purpose of adjusting the contact pressure distribution between the hand and arm support cushions. 46. Support device according to claim 45, characterized in that the level adjustment is carried out manually (e.g. by screw fixing). 47. Support device according to claim 45, characterized in that the level adjustment is carried out by an electric motor drive. 48. Support device according to claims 45 to 47, characterized in that a measuring device for measuring the absolute contact pressure or the relative contact pressure conditions for the hand or arm support is provided on the relevant cushions (e.g. with scales in the cushion support for the front cushion and/or for the rear cushion). 49. Support device according to claims 43, or 45 or 46, characterized in that the (lower) slide plate of the front cushion, which executes a longitudinal movement parallel to the keyboard front, has an extension towards the rear towards the user side with an angle in a vertical or oblique direction . · · 111 and that the corresponding deviations of a additional support surface for the rear cushion is designed to be movable for the purpose of height adjustment and is fixed by manually detachable or loosenable connecting elements (e.g. slotted screw connection or plug-in grid connection). 50. Support device according to claims 43, or 45 or 47, characterized in that the (lower) slide plate of the front cushion, which carries out a longitudinal movement parallel to the keyboard front, has an extension towards the rear towards the user side with an angle in a vertical or oblique direction, and that, matching this, the angle of a IJf, additional support surface for the rear cushion to It is designed to be movable for the purpose of height adjustment and fixed by linearly moved motor-driven connecting elements. 51. Support device according to claims 42 to 50, in particular claim 44( _c ), characterized in that for the cushion movement in the longitudinal direction of the front cushion and the rear cushion, separate sliding surfaces fixed parallel to one another are provided for each cushion. ^k 52. Support device according to claims 42 to 50, -■ in particular claim 43(c), characterized in that the support surface of the rear cushion is slidably supported on a further sliding surface which runs parallel to the sliding surface of the first cushion. 53. Support device according to claims 42 to 52, excluding claim 50, characterized in that ' the rear cushion is flanged to the (upper) slide plate of the front cushion and is moved accordingly in the longitudinal direction as well as in the transverse direction. 54. Support device according to Änsprüfclfejf %2 ]$isi5*3/*· · characterized by a joint with a vertical axis which is provided at the junction of the support surfaces of the front cushion and the rear cushion. 55. Support device according to claims 42 to 54, characterized in that the front cushion is designed as a flat hand rest cushion guided by longitudinal and transverse rails and that the rear cushion is designed as a folding cushion with a direction of movement towards the keyboard (cf. claims 28 to 39) for the arm rest. 56. Support device according to claims 42 to 55, characterized in that the front and rear cushions are covered with a continuous or individual leather cover, whereby the leather cover can be replaced by means of a Velcro connection depending on the variant (e.g. with or without a window). 57. Support device according to one of claims 42 to 56, characterized in that the front and/or rear cushions have a sensory contact pressure measurement, by means of which a contact pressure distribution is carried out between the hand rest of the front cushion and the arm rest of the rear cushion according to the principle of a successive approximation by adjusting the relative height between the front and rear cushions, whereby the hand can also be removed from the cushions for each step of the successive approach in order to relieve the drive for the height adjustment and for this option a signal transmitter (e.g. acoustic type) is provided to display the process steps. '' 58. Support device according to claims 42 to 57, characterized in that in the event that no conductor rails or cables are available for signal transmission to the servo drives are provided for the hand-free adjustment/ the signal is fed to the cushion support via extendable cables which are embedded in the sliding ruler for the longitudinal movement of the cushions, and the cables are used to supply the power and/or control signals to the electronics housed on the cushion support, in accordance with a setpoint value for the hand-rest pressure specified by means of a central input. 59. Support device according to claims 1 to 58, characterized in that the sliding ruler for the longitudinal guide on the lateral end face is flush with the frame (e.g. strip) so that the slide plates with their sliding elements can be placed on the side and pushed in, that an insertion slot is provided on the lateral frame of the sliding ruler (each) for pushing in the guide element of the slide plates and that fitting pieces are provided for inserting and fixing at the end of the guide line (e.g. the guide slot), which prevent the slide plates from sliding out. 60. Support device according to claims 1 to 59, characterized in that the sliding surfaces are designed as strips placed on a support or bearing surface and are replaceable, the sliding surfaces relating to at least one of the following sliding surfaces: a) (upper) sliding strip surfaces placed on the support surface of the longitudinal guide ruler on both sides of the guide line, which are enclosed by the frame of the longitudinal guide ruler and by"' the boundary of the guide line (e.g. guide web or guide element sliding within a guide slot), and/or "^&Rgr;22"-"! b) under the support surface the ^ (Lower) sliding strip surfaces on both sides of the guide line, which are bordered by the limiting strips of the guide line designed as a guide slot and by the limiting of the guide line (e.g. guide web or guide element sliding within a guide slot), and/or c) sliding surface strips placed on the support surface of the cross guide ruler. 61. Support device according to claim 60, characterized in that the lower sliding surface strips can be inserted from the front narrow side of the longitudinal guide ruler. 62. Support device according to claim 60, characterized in that the lower sliding surface strips can be inserted by folding open a hinge joint which is provided continuously or piece by piece on the guide line. 63. Support device according to claim 25, characterized in that the cables are bare steel cables, that the signal coupling of the cables takes place via contact (e.g. sliding contact or via the axes of the spool rollers), that the cables are guided in the guide slot of the relevant sliding element, via which the further contacting of the cables is also carried out, and if necessary a return groove is provided for the cables, and that the cables of the two cushions are separated by an insulating web in the guide slot of the relevant sliding elements of the cushions. 64. Support device according to claim 25, characterized in that the cables are bare steel cables, that the signal coupling of the cables is via touch contact (e.g. sliding contact or via the axes of the spool rollers); that the cable pulls are guided in the guide slot of the relevant sliding element, via which the further contact of the cable pulls is also made, and if necessary a return groove is provided for the cable pulls, and that the cable pulls of the two cushions are separated by dividing the sliding ruler into an area for the right cushion and an area for the left cushion and are fed accordingly to the drives by deflection. 65, Support device according to one of claims 22 to 64, characterized in that the transverse displacement of the cushions is also motor-assisted with a sensory movement scanning in the corresponding direction, 66, Support device according to claim 22, characterized in that the drive for the cushion movement is arranged independently on the support surface of the cushions (e.g. with rubber rollers on the sliding surface) and corresponding current guide rails with corresponding taps are provided. 67. Support device according to one of claims 18 to 20 and 24 to 2δ or claim 65 _f , characterized in that the displacement path of the cushion is converted via the respectively unwound cable pulleys (e.g. by optical disk or tachogenerator or inductance measurement of the respectively still wound cable pulley, ditto damping measurement) into corresponding incremental pulses for the relevant control functions. 68. Support device according to one of claims 42 to 67, characterized in that the front cushion is designed as a flat hand rest cushion (e.g. according to claim 40) and the rear cushion is designed as an arm rest according to one of claims 28 to 39. 69. Support device according to one of claims 5 to 68, characterized in that the cross slide has a multi-cell cross rail guide with guide elements for centering without vertical support and that additional sliding elements are provided for vertical support (e.g. sliding pills, or balls or rollers or wheels, see also claim 27, paragraph b). 70. Support device according to one of claims 5 to 69, characterized in that the multi-cell cross rail guide is formed by a (cross) guide groove for each guide row, whereby the projecting upper side of the guide grooves covers the pull-off safety surfaces (sliding surfaces) of the guide elements and the pull-off safety surfaces are enclosed by the edges of the guide grooves directly, or via attached guide pins, to form a centering guide. 71. Support device according to claim 69 or 70, characterized in that the sliding plates used in the (transverse) guide grooves as a trigger safety device are spaced apart from their underside support on the (lower) slide and do not rest on this support, and that the support for maintaining the distance of these sliding plates is provided by further support by further sliding elements or balls or rollers or wheels, which are arranged on both sides of the guide centering (e.g. the guide pins) on the inside or outside (e.g. on a replaceable sliding surface). ■1 72. Support device according to claim 69 or 70, characterized in that the sliding plates used in the (transverse) guide grooves ' as a trigger safety device are spaced apart from their underside support on the (lower) slide and do not rest on this support and that the support is designed to maintain the The distance between these sliding plates is adjusted to _ensure that the corresponding support surface of the cushion is supported by means of ball grooves (row of balls in guide grooves) provided on both sides of the centering of the guide pins on the inside or outside. 73. Support device according to one of claims 23 to 72, characterized in that the (free) movement for sensory scanning is carried out by a frame guide of the cushion support and the frame guide is carried out in another frame guide with a lateral distance of the relevant guide edges corresponding to the movement, wherein the further frame guide is made movable with low friction on »corresponding sliding elements or balls. 74. Support device according to one of claims 1 to 73, characterized in that the sliding ruler aligned parallel to the keyboard front has insertion slots provided on the user side on the longitudinal edge, each with an insertion guide (e.g. webs), into which table clamps are inserted from the table edge side underside of the sliding surface to press against the underside of the sliding ruler from above and are held against rotation by the insertion guide, that the underside of the sliding ruler has anti-slip surfaces (e.g. rubber feet) which are pressed against the table top by the table clamps, whereby the table clamp is supported on the underside of the table top. 75- Support device according to claim 72, characterized in that the lower clamp part of the table clamp (in each case) has a thread with a retaining screw * which presses against the underside of the table top (via an intermediate layer or retaining divider). 76- Support device according to claim 51, characterized in that the separate sliding surfaces (sliding rulers) for the cushion movement in the longitudinal direction - P26 - are made adjustable in their sliding height by spindle drives. 77. Support device according to claim 47 or 50 or 76, characterized in that the motor-driven linearly displaced connecting elements are formed by a pair of threaded sleeves made of non-electrical material forming the corner support points with screwed-in threaded rods made of electrically conductive material, the threaded rods being motor-driven in opposite directions and having threads opposite to one another, that the drive motors are attached to the threaded rods on one half and the sleeves are attached to the other half of the parts displaced against one another, and that a coil is placed over each sleeve which measures the immersion depth of the threaded rod in question by means of a damping measurement for the purpose of regulating the drive. 78. Support device according to claim 24 or 25 with a guide element according to claim 8, characterized in that the cables are attached to the guide element, which at the same time forms the pivot point of the cushion support, on both pulling sides. 79. Support device according to claim 78, characterized in that the guide line is designed as a guide groove or guide slot, that the guide element is designed as a bolt or pin guided in the guide slot, which is supported on the underside of the sliding surface in a bearing held by the cable pull (e.g. bushing) is rotatably mounted and the pull cables for both pulling directions are attached to the bushing. 80. Support device according to claim 78, characterized in that the guide line is designed as a guide groove or guide slot, that the guide element is designed as a bolt guided in the guide slot or pin, the sliding surface is rotatably mounted in a bearing (e.g. bushing) held by the cable pull and _has a drive wheel, over which a pull and drive loop is laid for the pull cable relevant to one direction of pull for the purpose of additional rotation of the bolt, and that the cable pull relevant to the other side of the pull cable is attached to the bearing of the drive wheel (bush), that the rotation of the drive wheel or the guide element is carried out by differential control of the pull lengths of the double cable pull on the pull side where the cable pull is laid over the drive wheel, whereby the drive wheel is held by the cable pull () attached to the other pull side, and that the drive wheel or the guide element (9Sb) is further moved along the guide slot by differential control of the cable pull lengths pulling on both sides of the drive wheel. 81. Support device according to one of claims 24 to 80, characterized in that a drive is provided for the guide element of each cushion with a pair of jointly driven winding rollers provided for each drive (mounted or coupled on a common axis), that the cable attached to the bearing of the drive wheel (e.g. bushing) is designed as a double cable (pair of cable) with synchronous winding of the cable lengths, and that on the two winding rollers of a drive, a cable from the double cable of the bearing sleeve is wound as an outgoing cable and a cable from the pair of cables of the drive wheel is wound as a return cable, the cables of each pair of cables being synchronously wound by the common drive of the two winding rollers. 82. Support device according to claim 80 or claim 79, characterized in that for the pair of cables of the drive wheel, a variation in the length of the cables relative to each other is carried out by electric motor, or electromagnetically operated pressure rollers). 83. Support device according to one of claims 24 to 80, characterized in that the cables are tensioned and moved by individual motor-driven spool rollers. 84. Support device according to one of claims 22 to 82, in particular claims 22 or 23, characterized in that the pressure or movement sensing for generating a vectorial direction signal for the cushion movement by at the cushion corners respectively &diams;assigned sensors (e.g. four) are carried out in such a way that the difference evaluation laterally opposite sensors provide a measurement value for the corresponding lateral displacement of the cushion and that the differential evaluation of diagonally opposite sensors provides a measurement value for the rotation of the cushion. 85. Support device according to one of claims 22 to 84, characterized in that a sensor is provided which indicates whether the hand or arm is placed on a cushion or not and that the signal for switching off the drive function for the j9 Pillow motion support is used, whereby the The device will switch off if your hand is not placed on the relevant cushion. 85. Support device according to one of claims 22 to 84, characterized in that in addition to the pressure or movement sensing for the control of the drive function, a sensor is provided which detects the hand or arm movement relative to the cushion and that a sensor is provided which indicates whether the hand or arm is placed on a cushion or not and that the signal for switching the drive function for the cushion movement support - P 29 used
is, whereby not &bull; * &ngr; α w ----- Arm, the control of the drive function is controlled by this additional sensor. 87. Support device according to claims 1 to 86 with a guide slot as guide line ⁴ of the sliding ruler, characterized by a strip inserted into the guide slot at the end of the sliding ruler, which forms the stop for the guide element sliding in the guide slot. 88. Support device according to claims 1 to 87, characterized in that the guide line of the sliding ruler has curves in the longitudinal direction, wherein in the case of the optional cable drive the cables are guided along the guide line at the curves by rollers. 89. Demonstration and test device for support device according to one of claims 1 to 89, with slide-guided movement mechanisms according to one of claims 1 to 75, for the purpose of mechanically operating a cushion on a supported hand rest, whereby separate cushions can be provided for the right and left hand and for keyboard use the cushions are placed separately in front of the keyboard front or are integrated into the keyboard, and a sliding guide in the longitudinal direction is provided as a feed, which is located in front of the keyboard front and has a guide parallel to the keyboard front on which the respective cushions are guided so as to be movable along the keyboard front with a further possibility of movement * of the cushion in the direction of the keyboard front, characterized in that the slide-guided movement mechanisms of the demonstration and test device are aligned parallel to the feed of the cushion movement in the longitudinal direction and that the motor-driven ~ P 30 &mdash; .*"&diams;· · ·· moving slide plates of the Daiäpnstraitibjis,» -un^·... test device have crankshaft drives with one crank each for the right and left row of cushions, the ends of which are placed on the cushions of a row of cushions arranged one behind the other.