Classifications

• • A—HUMAN NECESSITIES
  • A63—SPORTS; GAMES; AMUSEMENTS
  • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
  • A63C17/00—Roller skates; Skate-boards
  • A63C17/10—Roller skates; Skate-boards with endless tracks
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
  • B62B5/00—Accessories or details specially adapted for hand carts
  • B62B5/02—Accessories or details specially adapted for hand carts providing for travelling up or down a flight of stairs
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D55/00—Endless track vehicles
  • B62D55/04—Endless track vehicles with tracks and alternative ground wheels, e.g. changeable from endless track vehicle into wheeled vehicle and vice versa
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D55/00—Endless track vehicles
  • B62D55/08—Endless track units; Parts thereof
  • B62D55/084—Endless-track units or carriages mounted separably, adjustably or extensibly on vehicles, e.g. portable track units
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D55/00—Endless track vehicles
  • B62D55/08—Endless track units; Parts thereof
  • B62D55/18—Tracks
  • B62D55/24—Tracks of continuously flexible type, e.g. rubber belts
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D55/00—Endless track vehicles
  • B62D55/08—Endless track units; Parts thereof
  • B62D55/30—Track-tensioning means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
  • B62B2301/00—Wheel arrangements; Steering; Stability; Wheel suspension
  • B62B2301/25—Wheel arrangements; Steering; Stability; Wheel suspension characterised by the ground engaging elements, e.g. wheel type
  • B62B2301/256—Wheel arrangements; Steering; Stability; Wheel suspension characterised by the ground engaging elements, e.g. wheel type by using endless belts

Definitions

• Unitary rolling train and rolling assembly including.
• the present invention relates to a unitary rolling train of a new type and a movable assembly comprising comprising, intended to be used in place of any other existing rolling element: wheel, wheel or the like.
• the invention relates to a unitary rolling train formed by at least two rollers whose rolling shafts are moved away from each other and brought together by the return effect of a kinematic link.
• endless rolling belt type worn rolled by the rollers.
• Conventional rolling trains do not offer sufficient comfort alone and when such comfort is desired, the rolling trains are generally associated with one or more suspensions. These suspensions are expensive and can not always be integrated directly into the rolling trains.
• rollers usually mounted on these mobile assemblies do not allow to roll satisfactorily on a soft, uneven or congested ground, for example by chippings.
• they are used on rough, difficult, uneven or irregular surfaces they generate uncomfortable, dangerous or even harmful vibrations that are transmitted to the rest of the moving assembly. These vibrations are very troublesome in that they are, for example, felt by the child sitting in the stroller, by the patient transported in his bed, or transmitted to objects placed on the wheeled furniture, which in the latter case , can damage them by shocks or cause them to fall.
• the invention provides a solution by a rolling means that allows to circulate comfortably and quietly on any type of terrain and can be adapted to the descent and the rise of obstacles.
• a better driving comfort than that provided by conventional wheels and rollers is obtained thanks to the invention by means of a new unitary rolling train.
• This unitary rolling train comprises at least two wheels or rollers aligned and mounted or carried each bearing around one or by an axis carried by a support.
• the rolling axle of at least one of these wheels or rollers is displaceable away by means of a spacing means provided in or on the support.
• This rolling axle is freely mounted in displacement and guided and damped over a predetermined stroke to move automatically in operation in spacing movement by the spacer means under the sole effect of a pressure force on the ground.
• the spacing means may be in the form of an inclined ramp or an elongate guide slot inclined with respect to the horizontal and in which the displaceable bearing axis slides, or in the form of a piece or a spacer mechanism provided for pushing away the rolling axes of the wheels or rollers.
• the displacement of the rolling axis of the wheel or caster to the outside, provides a damping effect, the return to the initial position occurs naturally and automatically by the elastic force recoil reconciliation in the initial position exerted by a link endless kinematics of rolling in particular of the belt type carried by the wheels or rollers, these being then kinematically connected to each other by this rolling link.
• the running gear can be pivotally mounted or fixed on a rolling base serving as a frame for a moving assembly.
• FIGS. 1 to 4 are overall profile views of a unitary rolling train according to various preferred embodiments and variants of the invention comprising two rollers; • Figures 5 to 10 illustrate a variant of the invention comprising a means for adjusting the inclination of the suspension effect for the rolling axle of a wheel or wheel;
• FIG. 11 is an overall profile view of a unitary rolling train according to the second preferred embodiment of the invention comprising two wheels or rollers;
• Figures 12 and 13 are vertical sectional views respectively at a wheel or wheel and at an intermediate rolling support of the unitary rolling train of Figure 11;
• FIG. 14 is a dissociated overall view of the unitary train of FIG. 11;
• FIGS. 15 to 20 are perspective views illustrating different variants for the spacer part of the unitary rolling train according to the second preferred embodiment of the invention.
• FIG. 21 is an overall view of a variant of the second preferred embodiment of the invention in which the axis of a single wheel or wheel is movably mounted by means of a spacer ;
• FIG. 22 is an overall view of a variant of the second preferred embodiment of the invention in which the rolling train comprises four wheels or rollers in alignment, the axes of the end wheels being moved by means of a spacer
• FIG. 23 is a profile overview of a variant of the second preferred embodiment of the invention in which the rolling train comprises three wheels or rollers in alignment, the axes of the end wheels being moved by means of a spacer and the sidewall members each having two substantially vertical elongated guide slots;
• FIG. 24 is an overall view of a variant of the second preferred embodiment of the invention in which a third wheel or fixed-axis wheel is mounted above the two other wheels or wheels with movable axis;
• FIG. 25 is an overall profile view of a variant of the second preferred embodiment of the invention comprising three wheels or rollers whose axes are displaced remotely by means of a common spacing piece;
• FIGS. 26 to 28 are schematic views of the profile of the unitary train according to the second preferred embodiment of the invention illustrating the manner in which the spacer moves the axles of two wheels or rollers apart, a light being shown in the spacer for reasons of clarity; • Figures 29 to 34 are detail views in cross-section between two wheels or castors of the invention and illustrating several different examples to form the section of the running link and throat wheels or casters;
• FIGS. 35 to 38 are side views of a section of the rolling link according to different variants of the invention in which this link has an internal face which may or may not be cut into regular transverse cuts;
• Figures 39 and 40 are vertical sectional views at a smooth bearing roller on the inner face of the rolling link according to different variants of the invention comprising such a support element;
• FIG. 41 is a cross-sectional view of a groove support roller;
• FIGS. 42 to 44 are diagrammatic cross-sectional views of a support comprising different variants of lateral guides for the rolling link;
• Figures 45 and 46 are schematic side views of a variant of the invention wherein the vertical position of the support roller is adjustable by cylinders;
• Figure 47 is a schematic view showing a wheel or wheel according to the invention which is motorized by an external motor
• Figure 48 is a schematic view showing a wheel or wheel according to the invention which is motorized by an internal motor in the form of a motor-wheel;
• Figure 49 is a schematic perspective view of a piece of furniture on which are mounted four sets of rolling according to the invention at the rate of a unit rolling train according to the invention per foot furniture;
• Figure 50 is a schematic side view of a vehicle on which rolling assemblies according to the invention are mounted in place of the wheels;
• Figures 51 to 58 are schematic views illustrating the descent of a staircase by a roller assembly comprising two rolling trains according to the invention.
• wheel we will designate a wheel as well as a wheel or any unitary means of rolling or rolling.
• the invention relates to a unitary rolling train 1 of a new type as shown in Figures 1 and 3 in its simplest variants.
• This unitary rolling train 1 is intended to be used instead of any other existing rolling element: wheel, wheel or the like. It comprises at least two wheels 2 on which rolls a rolling kinematic link 3 mounted in circulation thereon.
• the unitary rolling train 1 of the invention is not run directly on the outer periphery of the wheels 2, but on an endless kinematic link running 3 carried by the at least two wheels 2 of the running gear 1.
• the bearing surface on the ground 4 is larger and linear, and the user feels less unevenness of the ground 4 when he makes rolling the movable assembly 5 which is provided.
• At least two wheels 2 are mounted to rotate each about an axis 6 carried by a support 7 and aligned by this support 7.
• the rolling axis 6 of at least one of the end wheels 2, 8, 9, that is to say, the front wheels 2, 8 and rear 2, 9 is movably mounted during operation in a linear stroke, for example along an elongated guide slot 10 made in the side pieces 11, 12 of the support 7 on which are mounted the rolling axes 6 of the wheels 2.
• FIG. 2 to 4 there is shown a preferred embodiment of the invention wherein the bearing axis 6 of the two end wheels 2, 8, 9 is movably mounted during operation.
• rolling axle displaceable during operation is meant a rolling axle which can move automatically in translation during the use of the running gear 1 on which it is mounted, as opposed to a running axle which is moved during of an adjustment, for example an adjustment of the tension of the rolling link 3.
• an adjustment is made before the use of the undercarriage 1 by the displacement of the rolling axle, after unscrewing a screw or a set nut to end after screwing to a fixed position of this axis.
• the treads 6 are free, that is to say they can move and this automatically during operation at any time under the effect of a force from a pressure on the running gear 1 with an automatic return to the initial position by elastic return from the kinematic link.
• the inventive concept of the invention lies in the fact that the rolling axle 6 of at least one of the end wheels 2, 8, 9 is displaceably mounted and that a spacing means 13 is provided for pushing this movable rolling axle 6 away when the means 13 or the support 7 is moved vertically upwards or downwards under the weight of the moving mobile assembly 5 on which it is mounted.
• the return to the initial position occurs naturally and automatically by the restoring force exerted by the kinematic link 3.
• At least one wheel bearing axle 6 is mounted movably and guided along an elongated guide slot 10 inclined relative to the horizontal made in the side pieces. 11, 12 of the support 7 on which the rolling axles 6 of the wheels 2 are mounted.
• this elongate and inclined guide slot 9 constitutes the spacing means 13 of the invention, so that when the unitary train 1 running over a uneven floor 4 or obstacle, the rolling axis 6 of the wheel mounted movable, for example moving upwards if the elongated guide slot 10, 13 is inclined upwards, has an effect shock absorber, as shown by a solid arrow in Figure 1.
• the return to position of the movable axis of rolling 6 of the wheel is by the elastic return of the kinematic connection provided by the link kinematic of rolling 3.
• the latter is preferably mounted taut on the wheels 2 of the unitary rolling train 1 and therefore constrains the rolling axle 6 of the wheel 2 downwards in the elongated guide slot 10, 13 made in the flank pieces 11, 12 of the support 7.
• the shape of the perimeter of the kinematic rolling link 3 is temporarily modified by example by spatial deformation or elastic elongation, then returns to its original form. Since the elongated guide slot 10, 13 is inclined outwards, the link kinematic rolling 3 can provide all or part of the restoring force necessary for the suspension effect by simple spatial deformation of its perimeter.
• the tension of the endless kinematic linkage 3 keeps each bearing axis 6 in the approaching position, for example low, in the elongated guide slot 10, 13 and exerts an elastic force of resistance and return during its removal, by example its moving up.
• the movable bearing axis 6 of the wheel can be mounted with suspension effect without the need to use another means for obtaining an elastic return, such as by springs or the like.
• This damping effect, increased by the antivibration nature of the kinematic link rolling 3, ensures, among other things, a great solidity for the assembly and an increased service life for the bearings of the wheels 2.
• the elongated guide slot 10, 13 made in the flank pieces 11, 12 of the support 7 on which the wheels 2 are mounted is preferably inclined outwards at a fixed or modifiable angle making it possible to adjust the direction of movement in an adjustable manner. of the wheel 2 and the damping force according to the weight of the moving assembly 5 on which is mounted the invention or the nature of the soil 4 on which it rolls.
• an elongate guide slot 10, 13 with a longitudinal direction close to the vertical allows a low damped rise of the wheel 2, particularly suitable for low weight mobile assemblies or a very uneven ground 4, while Elongated guide slot 10, 13 with a longitudinal inclined or more inclined direction provides a more damped and therefore more difficult rise of the latter by the effect of the kinematic link 3, which is particularly suitable for moving assemblies 5 of high weight or to a ground 4 perfectly smooth.
• FIGS 5 to 10 detail a variant according to which the angle of inclination of the elongated guide slot 10, 13 is adjustable.
• a pivoting adjusting disc 14 with adjustable inclination and having a guide slot 15 provided for the passage of the rolling axle 6 of the wheel 2 slidably mounted along this guide slot 15.
• This pivoting adjusting disc 14 is mounted on the support 7 at the elongated guide slot 10, 13 of at least one rolling axle 6 movably mounted.
• the support 7 has an enlarged guide slot 10, 13 which substantially coincides with the guide slot 15 of the pivoting adjustment disc 14 so that the rolling axis 6 of the wheel 2 passes into the guide slot. 10, 13 made in the flank pieces 11, 12 of the support 7 on which are mounted the wheels 2.
• This pivoting adjustment disc 14 also has lights 16 in a circular arc for the passage of guide screws and clamping 17 serving as a guide to the pivoting movement.
• the guide slot 10, 13 made in the flank pieces 11, 12 of the support 7 is provided for the passage and the displacement of the rolling axis 6 mounted movable at different angles of inclination provided by the pivoting adjustment disk 14.
• the support 7 on which are mounted the shafts 6 of the wheels 2 also has threaded holes 17 for the passage of the guide screws and clamping 16 previous. During adjustment, the guide and clamping screws 16 are loosened so that the user can orient the pivoting adjustment disc 14 according to the chosen inclination.
• This orientation is made by a pivoting of the disk 14, pivoting which is guided by the sliding of the arcuate lights 16 of the body of the disc 14 on the guide and clamping screws 16.
• This angle of inclination with respect to the vertical is between 0 and 90 °, preferably between 0 and 45 ° and more preferably between 8 and 35 °.
• the angle of inclination can be indexed for example by means of graduations 18 located on the pivoting adjusting disc 14 in front of which corresponds a mark 19 provided on the support 7 on which are mounted the wheels 2 or vice versa.
• the spacing means 13 is in the form of a spacer part or mechanism 20 provided for pushing away from the treads 6 end wheels 2, 7, 8 mounted moved along an elongated guide slot 10 formed in the flank pieces 11, 12 of the support 7 on which are mounted the wheels 2.
• FIGS. 26 to 28 A example illustrating the manner in which the part or the spacer mechanism 20 moves the bearing shafts 6 away from two wheels 2 during its vertical displacement is shown diagrammatically in FIGS. 26 to 28.
• the support 7 in each of its side pieces 11, 12, the support 7 preferably has at least one elongated guide slot 21, for example substantially vertical, along which a substantially horizontal connecting element 22 is movably mounted.
• this connecting element 22 On this connecting element 22 is mounted at least one piece or a spacer mechanism 20, preferably two, and on either side of the end wheels 2, 8, 9.
• this (or) piece or spacer mechanism 20 is provided for pushing at least one displaceable bearing axis 6 away.
• the spacer 20 is shaped in vertical plate 23, at least one of the longitudinal extensions has a cutout 24 at its end, this cutout 24 preferably being shaped V whose branches are respectively oriented outwardly so as to engage in the trough V the bearing shafts 6 end wheels 2, 8, 9 mounted displacements.
• this cutout 24 preferably being shaped V whose branches are respectively oriented outwardly so as to engage in the trough V the bearing shafts 6 end wheels 2, 8, 9 mounted displacements.
• the segments of its recesses 24 act as motion conversion ramps by pressing the axes. 6 wheels 2 moved to move them away from each other. This distance is guided horizontally by the guide slots 21 made in the flank pieces 11, 12 of the support 7.
• the spacing means 13 may, for example, comprise a link mechanism or the like (not shown). ) or any other means of conversion of movement for moving the bearing shafts 6 away from the end wheels 2, 8, 9 when it is subjected to a particularly vertical support force.
• the damping effect obtained is in principle proportional to the opening angle of the V of the cutout 24.
• the greater the angle of the V is open the smaller the amplitude of the distance of the axes 6 of wheels 2 displaced, and the lower the damping effect will be weak (soft damping ).
• the more the angle of the V is closed the greater the distance away from the axes 6 displaced wheels 2 is large and the damping effect will be important (hard damping).
• FIGS. 15 to 17 show room examples 13, 20 having cutouts 24 with different angle openings.
• the opening angle of the V-shaped cutout 24 is preferably between 60 ° and 160 °, more preferably between 100 ° and 130 °. As shown in Figure 15, according to a preferred embodiment, the opening angle of the V-shaped cutout 24 is substantially equal to 120 °.
• this cutout 24 may have any other suitable shape, which allows the spacer to move the mounted bearing shafts away from each other.
• the angular portion of the V of the cutout 24 may be rounded, as shown in Figure 29, or even the cutout 24 may be completely rounded ( Figure 19), which allows for example to provide a progressive damping effect .
• the cutout 24 is not necessarily symmetrical. If it is asymmetrical ( Figure 20), it provides a different damping effect depending on whether the spacer 13, 20 is moved up or down.
• the support 7 on which the bearing shafts 6 are mounted is preferably constituted by two flank pieces 11, 12 assembled and held parallel at a fixed distance from one another by means of assembly adapted 25 or consisting of a single piece, for example in the form of an inverted U-shaped bent metal plate 26 and whose two side faces constitute its flanks 11, 12.
• the suitable assembly means 25 may comprise horizontal transverse rods 27 which are mounted between the sidewalls of the support, for example with immobilization by screwing, welding, riveting or crimping.
• This rolling support 28 is for example in the form of at least one roller disposed between two wheels 2 in transverse position relative to the kinematic link rolling 3 or mounted in transverse displacement with respect to this kinematic link rolling 3. This displacement can be damped by an elastic force provided by a spring (not shown). The rolling axis of this roller is then guided along two transverse lights facing and parallel.
• the rolling supports 28 can be mounted on the adapted assembly means 25, for example in the form of horizontal transverse rods 27, which hold the flank pieces 11, 12 of the support 7 at a fixed distance.
• the vertical position of one or more rollers 28 can be variable and indexable by means of a suitable device, for example by means of one or more screws 30 freely sliding in a guide slot 31 after loosening one or more nut (s) mounted on it ( Figure 2).
• the vertical position of a wheel support 28 may be adjustable or occasionally displaceable by means of a mechanical device 32 that can be controlled, for example by means of a hydraulic jack 33 (FIGS. 45 and 46) in order to achieve a point contact point useful in the maneuvers.
• Modifying the vertical position of a rolling support 28 advantageously makes it possible to spatially deform the perimeter of the kinematic rolling link 3, for example in order to minimize the friction surface between this link 3 and the ground 4.
• the zone of support can serve as a pivot point, for example to facilitate the pivoting of the unitary rolling train 1 on itself.
• the means 32 for displacing the or a support roller constituting the rolling support 28 to the means 13 causing the axes of the wheels 2 to be moved apart.
• the at least one rolling rest 28 can be indexed by a suitable device 32 motor or not or be associated with the control movement of the part or the spacer mechanism 13, 20.
• the support 7 may have one or more side guides on either side of the kinematic rolling link 3. Examples of support 7 having lateral guides in its lower part are given in FIGS. 42 to 44.
• the substantially horizontal sliding of the at least one displaceably mounted rolling axle 6 is adjustable by means of a control mechanism 34 which can be controlled, for example by means of a jack hydraulic 35 as shown in Figure 4 in a variant where the positioning of two axes 6 is adjustable.
• the moving assembly 5 on which the unitary rolling train 1 of the invention is intended to be used is a vehicle 36.
• the hardness of the suspension of such a vehicle 36 may be adjustable, just like the support surface of its kinematic rolling links
• the outer surface 39 of the kinematic rolling link 3 presents preferably a substantially semicylindrical shape, namely a shape of substantially semicircular section.
• the kinematic link rolling 3 may also have a total curvilinear section, for example round or oval, the outer face 39 allows different incidences with the ground 4 while the inner face 29 is rolling bearing on the outer face of each wheel 2.
• the wheels 2 are preferably grooved wheels 30 and preferably have, although not necessarily, an external profile complementary to that of the internal face 29 of the kinematic rolling link 3.
• the internal surface 29 of the rolling link 3 may have a substantially semicircular, trapezoidal, triangular, square, rectangular or other shape of section.
• FIGS. 29 to 34 Various examples of section shapes for the inner surface 29 of the kinematic rolling link 3 are shown in FIGS. 29 to 34, where the outer surface 39 of the rolling kinematic link 3 has a substantially semicircular or otherwise convex sectional shape.
• the outer surface 39 of the kinematic rolling link 3 may have a section of radius greater than that of the inner surface 29, so that the substantially semicylindrical shape of the rolling surface has a flange bearing on the periphery of the lateral faces of the wheels 2.
• the inner surface 29 of the kinematic rolling link 3 may be solid (FIG. 35) or may have notches 40 (FIGS. 36 to 38), preferably transverse and regular, the depth of which allows faster and much quieter rotation and deformation of the kinematic link rolling 3.
• These notches 40 may have different shapes, including a rectangular profile (Figure 30), trapezoidal (Figure 31) or triangular ( Figure 32). They also increase the overall flexibility of the kinematic link rolling 3 and promote its ability to bend without using a softer material and therefore less resistant to wear.
• a relatively hard rolling kinematic link 3 without greater plasticity, preferably made of a polymeric material, and advantageously having a central wire frame 41.
• At least one unitary rolling train 1 of the invention When at least one unitary rolling train 1 of the invention is mounted on a mobile moving assembly 5, it can be fixed on the latter through the substantially horizontal connecting element 22 which is movably mounted in the substantially vertical elongate guide slot 21 formed in each of the flank pieces 11, 12 of the 7.
• the part or the spacer mechanism 13, which is mounted on the connecting element 22 is moved vertically upwards or downwards under the effect of the bearing force on the ground 4 of the mobile moving assembly 5 on which the unitary rolling train 1 of the invention is mounted.
• This connecting element 22 may be pivotally mounted or fixed on a moving assembly 5 to form a rolling base.
• the unit rolling train 1 of the invention can pivot around it, which allows for example to easily move the mobile assembly 5 on a sloping ground or to negotiate a difficult passage, for example when the ground 4 is congested by pebbles or other obstacles.
• the pivoting mounting of the unitary rolling train 1 of the invention can also make it possible to go up or down a staircase.
• Figures 51 to 58 there is shown the descent of a step 42 by a trolley for commissions 43 equipped with a pair of trains 1 pivoting rolling of the invention.
• the advantages of such a pivoting mounting for the unitary rolling train 1 are numerous and those given here are only examples.
• FIGS. 11 to 14 A preferred variant of the second embodiment of the invention is shown in FIGS. 11 to 14. It is possible to envisage numerous variants for a unitary rolling train 1 of which at least one wheel axis 6 is mounted movable and movable away from each other. under the action of the vertical displacement of a part or a spacing mechanism 13, 20. Thus, in Figure 21 has been shown a variant of the rolling train 1 of the invention in which the bearing axis 6 of a single wheel 2 is mounted movable and movable away. One can also consider a rolling train 1 having more than two wheels 2, aligned or not. Thus, in FIG.
• roller train 1 comprising four aligned wheels 2 and in which the rolling axle 6 of the front, rear and rear wheels 2, 9 is movably mounted and movable away from under the action of the vertical displacement of a part or of a spacing mechanism 13, 20.
• the rolling train 1 has more than two wheels 2, these wheels are not necessarily aligned.
• the wheels 2 of the same unitary train 1 must generally be located in the same plane to receive a rolling kinematic linkage 3 rolled in circulation thereon.
• the side pieces 11, 12 of the support 7 may each have any number of substantially vertical guide slots 21. When this number is greater than one, these guide slots 21 provide better guidance for the vertical sliding of the spacer 13, 20.
• FIG. 23 there is shown a rolling train 1 comprising three wheels 2 aligned with the side pieces 11, 12 of the support 7 each having two vertical guide slots 21 for better vertical guidance of the Spacer 13, 20.
• FIG. 24 there is shown a rolling train 1 comprising three wheels 2 arranged vertically in a triangle, the two wheels 2, 7, 8 of the bottom being substantially similar to those of the rolling train 1 shown in FIGS. 3 and 11, while the third wheel 2, 44, namely that of the top, is mounted to roll about a fixed axis above the other two 2, 7, 8.
• the third wheel 2, 44 is shown centrally relative to the other wheels 2, 7, 8, but this is not mandatory.
• the endless kinematic link of rolling brought to rolling and running on the three wheels 2, 7, 8, 44 undergoes a bending of less movement return than when it is carried by two wheels 2.
• the substantially horizontal connecting element 22 mounted on the part or the spacer mechanism 13, 20 is pivotally attached to a mobile moving assembly 5, the all of the rolling train 1 can freely pivot around this connecting element 22 forming a pivot axis.
• the position shown in FIG. 24 for the rolling train 1 is that corresponding to the equilibrium position, at which the rolling train 1 returns automatically after a pivoting movement on itself for example in the case of a walk.
• FIG. 25 shows a rolling train 1 comprising three wheels 2 arranged vertically in a triangle, the rolling axle 6 of each of these wheels 2 being movably mounted and movable away by the action of vertical displacement of the same part or the same spacing mechanism 13, 20 substantially central (e).
• the substantially horizontal connecting element 22 mounted on the part or the spacer mechanism 13, 20 is pivotally mounted on a mobile moving assembly 5.
• the rolling train 1 being symmetrical about a pivot axis of 2 ⁇ / 3, the connecting element 22 is mounted substantially central with respect to the whole of the rolling train 1 so that after pivoting on itself by 2 ⁇ / 3, the rolling train 1 is in a position equivalent.
• the elongated guide slot 21 made in the flank pieces of the support has an additional branch, so as to form a three-pointed star conformation.
• Another improvement of the invention consists in mounting the rolling axle 6 of at least one sliding wheel 2 in an elongated guide slot 10 which furthermore has a substantially horizontal additional rectilinear portion 45, as represented in FIGS. 4.
• the indexing in position of the rolling axle 6 in the substantially horizontal rectilinear portion 45 of the guide slot 10 allows an adjustment of the tension of the driving kinematic linkage 3 around the wheels 2 and is used to set up running kinematic link 3 or replacing it.
• This indexing is performed by means of a quick adjustment mechanism 46, practical and inexpensive, for example by means of an eccentric 47 bearing on the bearing axis 46 of one of the wheels 2.
• This adjustment mechanism 46 can be adapted by the skilled person to any embodiment of the invention.
• the unitary rolling train 1 of the invention can be mounted on any moving assembly 5 instead of the existing wheels 2 thereon to form a rolling assembly or a rolling base.
• the invention also relates to any mobile rolling assembly 5 comprising a frame supported by rolling means 1 including at least one unitary rolling train 1 according to the invention, at least one rolling train 1 can be directive. It can also be applied to all movable or movable furniture usually mounted on wheels, be it indoor furniture, trolleys or hospital beds, carts, chairs, armchairs, tables, workbenches, etc.
• the application of the invention has no limit and can be applied to any moving assembly 5 usually comprising wheels: supermarket trolley, toy, stroller, robot, gantry, suitcase, scaffolding, etc. .
• the unit rolling train 1 of the invention is a new type of rolling means that provides a significant improvement in the state of the art.
• unit rolling train 1 having a single kinematic link without end of rolling 3
• driving kinematic links 3 can be aligned one behind the other, or be located substantially at the same level, parallel to each other.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Handcart (AREA)
• Motorcycle And Bicycle Frame (AREA)
• Tires In General (AREA)

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• 2009
  • 2009-04-21 WO PCT/FR2009/000470 patent/WO2009133319A2/fr not_active Ceased
  • 2009-04-21 JP JP2011505557A patent/JP2011518073A/ja active Pending
  • 2009-04-21 EP EP09738353A patent/EP2274195A2/fr not_active Withdrawn
  • 2009-04-21 RU RU2010147459/11A patent/RU2010147459A/ru not_active Application Discontinuation
  • 2009-04-21 US US12/736,621 patent/US20110175304A1/en not_active Abandoned
  • 2009-04-21 CN CN2009801143758A patent/CN102119086A/zh active Pending
  • 2009-04-21 KR KR1020107026073A patent/KR20110003373A/ko not_active Withdrawn
  • 2009-04-21 BR BRPI0911186A patent/BRPI0911186A2/pt not_active IP Right Cessation
  • 2009-04-21 CA CA2720911A patent/CA2720911A1/fr not_active Abandoned
  • 2009-04-21 MX MX2010012613A patent/MX2010012613A/es not_active Application Discontinuation

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