EP2568854B1 - Sitzvorrichtung - Google Patents

Sitzvorrichtung Download PDF

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Publication number
EP2568854B1
EP2568854B1 EP11720092.3A EP11720092A EP2568854B1 EP 2568854 B1 EP2568854 B1 EP 2568854B1 EP 11720092 A EP11720092 A EP 11720092A EP 2568854 B1 EP2568854 B1 EP 2568854B1
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EP
European Patent Office
Prior art keywords
seat
halves
coupling device
seat device
intermediate piece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP11720092.3A
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German (de)
English (en)
French (fr)
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EP2568854A1 (de
Inventor
Josef GLÖCKL
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Individual
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Individual
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Publication of EP2568854A1 publication Critical patent/EP2568854A1/de
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C9/00—Stools for specified purposes
    • A47C9/002—Stools for specified purposes with exercising means or having special therapeutic or ergonomic effects
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/024—Seat parts with double seats

Definitions

  • the invention relates to a seat device comprising a foot part, an intermediate piece connected to the foot part and a seat connected to the intermediate piece, which is formed with two individual seat halves, wherein the seat halves are movable independently of each other, and wherein between the seat and the intermediate piece Coupling device is present.
  • a piano chair from a single-seat chair can be converted into a double chair.
  • the chair seat consists of two parts, which can be brought into a composite position designed for an individual or for two people, in which case a support plate on the center column of the chair is mounted on the support plate, the individual seat parts, led, by a curved Nutfeder entry can be pivoted apart, so that the two seat halves can be arranged side by side, that the original line of contact between both seat halves is now directed forward to a possible piano and form a continuous line.
  • Such a piano chair is designed such that, when it has been brought into one of the two named positions, it is firmly locked in these positions in order to enable a static sitting of the user.
  • an actively dynamic seating device which has a foot part and an intermediate piece connected to the foot part.
  • a seat is arranged, which is formed in two parts.
  • the two seat part halves are mutually independently vertically resiliently connected to the intermediate piece and each have a support member on which a seat half is movably arranged on a hinge so that it can be tilted forward and backward.
  • a seat with a cup-shaped seat member and a back member for supporting the back wherein the back member is pivotally mounted about an axis extending parallel to the user's spine 'axis.
  • the seat element is connected via a coupling element with the pivotable back element, wherein the Kopfpelelement a rotational movement of the backrest in a lateral rotational movement of the seat member about the ventral-dorsal axis proportionally transmits and vice versa.
  • the pelvis moves three-dimensionally; H. it performs rotations around all spatial axes as well as translations in the direction of the spatial axes. Due to the change from walking to sitting, at least one translatory and one rotational degree of freedom are blocked in the described seat constructions. Also changes with such a change the burden of the spine or the intervertebral discs.
  • the pressure load during walking in a train-pressure load during sitting whereby the discs on the dorsal side to train and on the ventral side are subjected to pressure changes.
  • the highest stress occurs in the region of the vertebrae S1-L4, since the curvature in sitting is greatest here in comparison with standing.
  • the L4 - L5 vertebrae connect to the os sacrum and are deprived of their natural mobility due to the interplay of spinal curvature and blockage of the degrees of freedom. As a result, individual discs can prematurely wear out and degenerate. This in turn leads to back pain and sometimes permanent damage to the intervertebral discs. Thus, the natural three-dimensional pelvic movement is blocked with its six possibilities of movement (three rotations around the spatial axes and three translations).
  • the invention is based on the object to provide a seat device which avoids the disadvantages of conventional seats and in particular allows a three-dimensional pelvic movement.
  • the seat device consists of a foot part, an intermediate piece connected to the foot part and a seat connected to the intermediate piece, which is formed with two individual seat halves.
  • the seat halves are movable independently of each other, wherein between the seat and the intermediate piece a coupling device is formed, which has at least one means whereby the seat halves translationally in all spatial directions and are rotatory about all spatial axes movable.
  • the idea according to the invention is to open up the possibility of carrying out unrestricted three-dimensional pelvic movements while sitting down.
  • the lumbar vertebrae and the pelvis are not blocked in their natural movement, but are both translationally and rotationally movable in all directions.
  • the advantageous effect of the inventive coupling device is essentially to replace the negative loads during sitting by dynamic movements of the lumbar spine and the pelvis, which correspond to those during walking.
  • each seat half it is preferable to arrange at least one such means under each seat half. This is how it is possible to provide both pelvic bones with optimal support when sitting. Also, hereby a variety of seating positions are possible and promote the well-being and mobility while sitting in any position and attitude.
  • the at least one agent advantageously has at least one elastic and / or one damping element. This allows a simple way to adapt to the anatomical position of the ischial tuberosity of each seat occupant.
  • the elastic and / or damping element consists of a rubber block, which ensures mobility and also absorbs the pelvis soft.
  • the elastic and / or damping element is designed as a fluid-filled chamber, in particular as a gel pad, wherein the element, similar to the rubber block, a translatory displacement in the direction of the spatial axes and / or rotation allows around the spatial axes.
  • an element is arranged under each seat half, wherein both elements communicate with each other are connected. This means that the pressure on an element below one half of the seat is transferred to the other half of the seat, similar to a waterbed. Thus, the same pressure prevails in each element, with the pelvic position and the personal seating needs acting.
  • the elastic element is also possible to form the elastic element as a spring arrangement wherein the arrangement may consist of coil springs, so that a stored seat half is also three-dimensionally movable.
  • the springs can be stored in different angles inwards to ensure lateral stability.
  • the coupling device has a mechanism for adjusting the distance between the seat halves. Since people of different sex and age have different distances of the ischial tuberosities, this fact is thus taken into account. Consequently, such a seat device is suitable for men and women of all ages.
  • the mechanism has, for example, a hand wheel, by means of which rotation the distance can be adjusted in an easy manner.
  • a coupling device has at least one sliding area, which allows horizontal mobility. It is advantageous to design per seat at least one sliding area. Furthermore, the at least one sliding region is advantageously designed as a linear guide, wherein the guide of the seat and coupling device of z. B. a dovetail guide is formed. Also, a guide is possible by means of rolling elements.
  • the coupling device has at least one tilting mechanism for at least one seat half.
  • the inclination is preferably only possible around a ventral-dorsal axis, but may also deviate from the ventral-dorsal axis even with a special design.
  • an "outflair" of the pelvis in which the ischial tuberosities are pushed inwards and the pelvic blades are pushed apart as biomechanical countermovement, is counteracted.
  • Biomechanically it is better to push the ischial tuberosities on the seat surface to the outside and thus the Pelvic scoops to move inward (“inflair”). This biomechanically causes a slight kyphosis of the lumbar spine which corresponds to the natural posture.
  • At least one seat half can be preselected with respect to the position to the other and / or with respect to its mobility by means of an adjusting mechanism arranged on the coupling device and / or on the tilting mechanism.
  • This is also advantageous because women and men have a different Weghöckerabstand. In this way, the inclination or the pelvic movement can be adjusted in both its intensity and in its deflection according to the personal or therapeutic requirements.
  • the seat can also be adapted to the age of the person sitting, as younger people are usually more mobile than older people.
  • the seat device advantageously has a return mechanism which returns at least the seat half to a starting position.
  • a return mechanism which returns at least the seat half to a starting position.
  • each seat half has such a return mechanism.
  • the seat device may comprise a device in which the force for changing the position of a seat half in and around all spatial directions is adjustable.
  • the needs of users with regard to the pelvic movement can be exactly met.
  • Such a therapy can specifically train the musculature by adjusting the restoring force while sitting.
  • those persons who work during their working hours can relieve their symptoms. Consequently, the seat device according to the invention can serve not only to relieve pain but also to promote the healing process.
  • the return mechanism comprises a spring and / or a tension band.
  • the return mechanism comprises a spring and / or a tension band.
  • the seating device is a pendulum stool.
  • pendulum stools are z. B. from the DE 195 04 121 known, which allow a resilient up and down movement of the seat, wherein the seat oscillates about a pendulum joint, which is arranged in a foot part.
  • the seat device according to the invention on a footboard with pendulum joint thus more degrees of freedom and movement opportunities are opened to the seat occupant.
  • the three-dimensional, natural movement of the pelvis is modeled while walking while sitting, with the fürsaftung the intervertebral discs not only enabled, but also promoted.
  • the mobility of the seat device can be limited by means of variable stops. This allows people with limited hip mobility to grope slowly to greater flexibility. Accordingly, it can be avoided by such a stop, that in immobile seat users by a high mobility of the seat device, in particular in the arrangement on a pendulum stool, an overuse or uncertainty arises.
  • the coupling device is rotatably mounted on the intermediate piece. Rotary movements about the body axis are thus also possible.
  • the seat halves provide a device with which the independently movable seat halves are blocked. Persons to whom strong mobility of the seat halves is uncomfortable, thus temporarily limited, but still use a seat device according to the above features.
  • the seat device detects the seating position by means of at least one sensor and preferably has a device for feedback.
  • a convexly sloped seating arrangement therefore, aids in the naturally correct posture whereby the ischial tuberosars tend to outwardly and adjust to the "inflair" of the upper pelvic margins, which promotes appropriate lordosis lordosis.
  • the sensors can detect all movements of the seats.
  • the sensors can detect inclination, angle of rotation and translatory movements.
  • pressure sensors Also possible are pressure sensors. So it is possible to capture the current position of the ischial tuberosities.
  • the seat device can have optical, acoustic and / or haptic elements.
  • Haptic elements can send feedback to a seated person by means of vibrations, whereas acoustic z. B. can generate a warning tone.
  • acoustic z. B. can generate a warning tone.
  • different-colored light sources can be used, which in each case have a color of a light source for the various arrangements of the seat surface.
  • a red signal indicates an undesired pelvic position, with a horizontal or convex tilt causing a green flare. Too strong a convex tilt of the seats, in turn, creates an undesirable seating position and glows orange.
  • a white light source is provided in the case of the synchronous inclination of the seats.
  • sensors with a corresponding feedback can also be used to set the optimum distance of the seats from each other.
  • the feedback sensors are connected to a computer that uses software to alert the user to their seating position.
  • a connection is made for example with a cable or via radio.
  • the seat device is advantageously suitable with sensors for controlling software (eg a computer game) or also hardware (eg a lifting platform).
  • software eg a computer game
  • hardware eg a lifting platform
  • FIG. 1 1 schematically shows a seat device 1 with a foot part 2, a pillar-shaped intermediate piece 3 connected to the foot part and a seat 4 connected to the intermediate part 3.
  • the space axes XYZ of the coordinate system are selected such that the Z axis in the pillar of the intermediate piece 3 pointing upwards.
  • the seat 4 is formed with two individual seat halves 5a, 5b, wherein the seat halves are independently movable. Between the seat 4 and the intermediate piece 3, a coupling device 6 is arranged.
  • the coupling device 6 consists of a longitudinal member 22, cross members 21 and an element 12 which is disposed directly under each seat half.
  • the element 12 is made of a material that stores mechanical forces in the form of a deformation and returns to its original shape after the forces have dropped. Suitable materials include rubber, foam or a gel (gel pad). Also, a training similar to a waterbed is possible. The inclusion of shear, tensile and compressive forces as well as moments ensures a three-dimensional mobility of the seat halves in the x-y-z coordinate system.
  • a semi-cylindrical one extending with its axis in the Y direction Element 20 is in the illustrated embodiment with the lateral surface on the cross members 21. It is firmly connected to the seat half 5a, wherein all movement possibilities, as indicated by the double arrows, but also the rotations are not affected by the spatial axes.
  • Seat half 5b shows an alternative embodiment without an element 20. Thus, seat half 5b can rotate three-dimensionally in space, ie in the direction of all three spatial axes, as well as around all spatial axes.
  • a spring 17, which surrounds the column-shaped intermediate piece 3 on the outside allows a sprung sitting or an up-and-down swinging.
  • a gas pressure spring 18 is arranged for height adjustment, the release by means of a lever 19 on the underside of the coupling device 6 is adjustable.
  • the intermediate piece 3 is telescopically executed (not shown). Furthermore, it can be provided to arrange a pendulum joint between the intermediate piece 3 and foot part 2.
  • FIG. 2a shows the coupling device 6 in plan view.
  • the seat halves 5a, 5b indicated by dash-dotted lines.
  • the two cross members 21, which extend in the x-direction, are spaced apart from one another and connected to one another via a longitudinal member 22.
  • the longitudinal member 22 is arranged directly or indirectly on the intermediate piece 3.
  • the element 12 is arranged per seat half 5a, 5b, which extends in the y-axis direction and protrudes in the x and y direction both beyond the cross members 21 and beyond the longitudinal members 22.
  • a narrower element 12 can also be used.
  • the width of the element 12 should be chosen such that rotation about all spatial axes and translation in each spatial direction is possible.
  • the element 12 is designed as a rubber block, foam block, gel pad or fluid-filled chamber (similar to a waterbed). Also, the element 12 may consist of at least two individual parts, wherein per cross member 21 at least one element 12 per seat half is attached.
  • FIGS. 2b to 2d embodiments of a seat half adjustment are shown. Due to the fact that the distances of the ischial tuberosities are different in humans, it is advantageous to increase the distance of the Seat halves 5a, 5b adjustably set up.
  • the cross member is designed as a rail 210, on the carriage 280 are displaceable. On the carriage 280 are the respective elements 12.
  • the setting is done by means of a suitable mechanism, such as a threaded rod drive 281 / 280c, which varies the distance between the carriage 280 to each other.
  • the threaded rod 281 is formed in the regions which are associated with the respective carriage 280a or 280b, with opposite pitch.
  • a lever construction can be used, which can also be adjusted via a threaded rod.
  • a simple electromotive or hydraulic or pneumatic adjustment are in the expertise of the engineer.
  • Figure 2d shows a formation of the carriage 280 as a dovetail guide 36, which connects the seat half 5a and the cross member 21 with each other and allows translation in the x direction to vary the distance of the seat halves from each other.
  • tilting mechanisms 7 are shown for the coupling device 6 in a side view or in view of the xz plane.
  • both variants each have a seat half 5a, 5b, cross member 21, a longitudinal member 22, an element 12 and a coupling joint 23 between the cross member 21 and Have longitudinal members 22.
  • the joint 23 is designed as a rubber block 15 and takes on both a movement and a damping function.
  • the joint 28 is arranged between the cross member 21 and the element 12, whereas in variant B it is arranged between the seat half 5 b and the element 12.
  • the joints 28 are formed in a semi-cylindrical shape. In variants, not shown, they may have a different shape, for example a spherical or another, the desired rocking movement enabling spatial form.
  • each has Seat half per cross member 21, a joint 28.
  • the tilting mechanism 7 thus allows the seat halves 5a, 5b to rotate about the y-axis.
  • the overall arrangement which is pronounced of a balance, is generally so mobile that the seat halves are rotatable due to the coupling joint 23 between the cross member 21 and the longitudinal member 22, so that the seat halves can move vertically in the z-direction.
  • a movement mechanism can be a movement mechanism 16 ', 26' for setting the variable stops 16 and / or the fitting pieces 26, with which the extent of the movement possibility can be adjusted.
  • This may be a simple spindle mechanism trade, by means of which the stops 16 up and down, or the fitting pieces 26 are more or less deeply retracted into the gap between the cross member 21 and the concave support at the end of the intermediate piece 3.
  • hinge bearings holding devices are provided which ensure that the respective components are held together functionally and yet can perform the desired movements. These brackets are not shown in the figures.
  • each seat half is also rotatable about all other spatial axes.
  • the cylinders 24 are arranged below the seat half 5a or on the element 12 and spaced apart in the x-direction. All cylinders of a seat half are connected to each other via fluid lines 11.
  • the cylinder movement or the flow of the fluid is limited, the movement of the seat half can be facilitated, made difficult or fixed.
  • the adjustment mechanism 8 provides a fluid supply available, with the height adjustment or tilt is individually adjustable. The desired settings for the adjustment mechanism 8 are made via the lever 27. Due to the presettable and / or restrictable movement of the Seat half 5a can z. B. Pelvic malpositions can be corrected by means of the seat device 1. Alternatively, a fixed bearing can replace a pair of hydraulic cylinders of a cross member of a seat half. Although this still allows the adjustment of the slope, but no height adjustment can be made.
  • a connection of the fluid conduits 11 of the individual seat halves 5a, 5b may be provided.
  • the hydraulic cylinder can under each seat half filled with fluid, optionally conductively interconnected chamber be arranged, similar to a waterbed.
  • FIG. 5 shows a further embodiment of a tilting mechanism 7.
  • the hydraulic cylinders are replaced by springs 13.
  • the fixing mechanism is designed as a foam block 29, which is variable in hardness depending on personal discretion. By means of various shapes, degrees of hardness, widths and thicknesses, (not shown) the rotation and translation is made more difficult or easier. Also, the seating comfort is thus flowable. Due to the permanently acting spring force, the seat half is pushed back into the starting position. Consequently, the springs 13 also serve as a return mechanism 9. Furthermore, a design is possible only with springs, wherein these can be arranged at different angles between the seat surface and the cross member, as shown by way of example with spring 34.
  • FIG. 6 An alternative return mechanism 9 shows Fig. 6 ,
  • the seat half 5a is stretched over a tension band 14 on a circular, spherical or semi-cylindrical element 30.
  • the drawstring 14 is guided by a through the element 30, the seat half 5a and through the cross member 21 extending bore 140.
  • the seat half rests on the semi-cylindrical element 30, wherein the convex portion to the seat half 5a shows.
  • On the underside of the cross member 21 is an adjustment device 25, by means of which the tension of the tension band 14 is adjusted.
  • the adjusting device 25 has a cylinder with external thread 31 through which the tension band 14 is passed.
  • a coupling device 6 is shown with the seat half 5a.
  • the seat half is disposed on a rubber block 15 which is connected to a plate 33 and which allows the seat half the desired degrees of mobility.
  • the plate 33 is located in a recess of the cross member 21 and can be sunk or raised via an adjusting device 35 in the recess.
  • the adjusting device 35 is formed as an adjusting screw which engages in a thread which is cut in the cross member 21.
  • FIG. 8 shows three variants AC of the seat device according to the invention with sensors and a device for feedback.
  • Variation A is carried out with a tilt-tilt sensor 37, which detects the position of the seat half 5a and the ischial tuberosity from the inclination.
  • For the feedback of the seating position 21 differently colored LEDs 38 are arranged below the cross member. These light up according to the position of the seat halves.
  • a selection of different seat half positions shows Fig. 10 , In this case, the seats in a) have a concave inclination (inwards), whereby the LEDs turn red (cross in Fig. 9 a) ), as this leads to an approach of the ischial tuberosities and subsequently to the undesired "outflair”.
  • the color appears green (hook in Fig. 10b) ), when the seats are horizontal or slightly outward (convex) oriented.
  • An excessively convexly inclined seating surface creates an undesirable seating position, causing the LEDs 38 to light orange to indicate that they are sitting correctly ( Fig. 10c) ).
  • white LEDs are provided (equal sign in Fig. 10d) ).
  • Variant B off Fig. 9 shows below the cross member 21, a speaker 39 which generates different warning tones for the above-described possibilities of seat halves.
  • a vibration element can be arranged, which informs the user about the seating position via the feel.
  • a haptic is close to, arranged on or in at least one seat half.
  • the seat device is connected to a computer 40 which uses software to alert the user to their sitting position.
  • the information is conveyed to the user in such a way that the screen displays how he has to behave in order to get into a better sitting position.
  • the connection to the computer via radio technology such. B. Bluetooth, A cable connection is possible.
  • Fig. 10 is exemplified a lock for the movement of the seat halves relative to each other.
  • a lock for the movement of the seat halves relative to each other.
  • Such a lock makes it possible to disable the mobility of the seat halves, so that the seating can be used in between by users where the mobility of various is not desired.
  • locking seats (301a, 301b) are arranged under the seat halves (5a, 5b) and cooperate with displaceable locking bars (300).
  • the Arretianssitn (301 a, 301 b) are arranged here in duplicate on the seat halves, but it can be provided with a corresponding design only a central locking.
  • the two locking rods (300) are displaceable in the example shown by a common actuating rod (302). In the position shown, the rods are in the locking position. When the rods (300) are pulled to the right in the X-direction, the end of the locking rod (300) leaves the locking receptacle (301a), so that both seat halves (5a, 5b) are decoupled and can move freely again.
  • Such a lock is not limited to the illustrated embodiment.
  • the actuating rod can act on the locking rods via an articulated lever, thereby protruding too far Beyond the seating area.
  • the invention is not limited in its execution to the above-mentioned preferred embodiments. Rather, a number of variants is conceivable, which makes use of the illustrated solution even with fundamentally different types of use. So it is z. B. in the scope of the invention described, to combine the individual embodiments, so that z. B. in the exemplary embodiment FIG. 7 Also, hydraulic cylinders can be arranged. Also for the elements 12 in addition to rubber and the materials gel or foam can be used. Furthermore, z. B. in addition a gel pad in FIG. 8 be arranged, which allows a three-dimensional freedom of movement. Furthermore, the mentioned embodiments can be supplemented by the element 20. A combination of several sensors with haptic and / or acoustic and / or optical elements for displaying the seating position is also possible.

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  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Special Chairs (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Chairs Characterized By Structure (AREA)
EP11720092.3A 2010-05-14 2011-05-16 Sitzvorrichtung Active EP2568854B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010020503A DE102010020503A1 (de) 2010-05-14 2010-05-14 Sitzvorrichtung mit beweglichem Sitz
PCT/EP2011/057905 WO2011141580A1 (de) 2010-05-14 2011-05-16 Sitzvorrichtung

Publications (2)

Publication Number Publication Date
EP2568854A1 EP2568854A1 (de) 2013-03-20
EP2568854B1 true EP2568854B1 (de) 2014-02-26

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EP11720092.3A Active EP2568854B1 (de) 2010-05-14 2011-05-16 Sitzvorrichtung

Country Status (7)

Country Link
US (1) US9498067B2 (zh)
EP (1) EP2568854B1 (zh)
JP (1) JP2013528430A (zh)
CN (1) CN102958403B (zh)
DE (1) DE102010020503A1 (zh)
DK (1) DK2568854T3 (zh)
WO (1) WO2011141580A1 (zh)

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KR100397267B1 (ko) * 2003-06-12 2003-09-13 김선환 간격 조절이 가능한 씨트 장치
JP2005052317A (ja) * 2003-08-01 2005-03-03 Torein:Kk 椅子
NO320864B1 (no) * 2004-05-14 2006-02-06 Sinvent As Stolsete med innbydes bevegelige setedeler
US7547067B2 (en) * 2004-12-01 2009-06-16 Keilhauer (Partnership) Tilt and swivel chair and mechanism therefor
CA2526108A1 (en) * 2005-11-04 2007-05-04 Steven Pearse Chair having movable thigh levers
MX2008012255A (es) * 2006-03-24 2008-10-07 Miller Herman Inc Pieza de mobiliario.
US7494181B2 (en) 2006-09-05 2009-02-24 Samuel Tucker Bicycle seat
DE102007025799A1 (de) * 2007-06-02 2008-12-04 Eberhard Lenz Aktivdynamische Sitzvorrichtung
DE102007063107A1 (de) * 2007-12-29 2009-07-02 Finke, Kurt Sitzplatte für einen Stuhl oder Hocker
CN201223158Y (zh) * 2008-05-01 2009-04-22 东莞市美缇皮具有限公司 主动式动力座椅装置
US8540314B2 (en) * 2009-10-28 2013-09-24 Products Of Tomorrow, Inc. Flex chair
GB201110748D0 (en) * 2011-06-24 2011-08-10 Freedman Simon A A seat
US9474377B2 (en) * 2012-05-16 2016-10-25 Safco Products Co. Upright active-sitting seat
US20150173515A1 (en) * 2013-12-23 2015-06-25 Freedman Seats Ltd Seat
WO2016044430A1 (en) * 2014-09-16 2016-03-24 Brock Walker Human balance work stool

Also Published As

Publication number Publication date
DK2568854T3 (da) 2014-05-12
EP2568854A1 (de) 2013-03-20
US9498067B2 (en) 2016-11-22
CN102958403B (zh) 2016-05-11
US20130057038A1 (en) 2013-03-07
DE102010020503A1 (de) 2011-11-17
JP2013528430A (ja) 2013-07-11
CN102958403A (zh) 2013-03-06
WO2011141580A1 (de) 2011-11-17

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