EP0421001A1 - Schaukeleinrichtung für Rollstuhl - Google Patents

Schaukeleinrichtung für Rollstuhl Download PDF

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Publication number
EP0421001A1
EP0421001A1 EP89118223A EP89118223A EP0421001A1 EP 0421001 A1 EP0421001 A1 EP 0421001A1 EP 89118223 A EP89118223 A EP 89118223A EP 89118223 A EP89118223 A EP 89118223A EP 0421001 A1 EP0421001 A1 EP 0421001A1
Authority
EP
European Patent Office
Prior art keywords
cradle
wheels
wheelchair
arm
rod
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.)
Withdrawn
Application number
EP89118223A
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English (en)
French (fr)
Inventor
Lucien Couture
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP89118223A priority Critical patent/EP0421001A1/de
Publication of EP0421001A1 publication Critical patent/EP0421001A1/de
Withdrawn legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/104—Devices for lifting or tilting the whole wheelchair
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1054—Large wheels, e.g. higher than the seat portion

Definitions

  • the invention relates to accessories for the physically disabled and in particular wheelchair users, and more particularly to a device for temporarily transforming a wheelchair into a rocking chair.
  • the document USA Vaughan is interesting in that it shows a rocking device for a wheelchair, 30, comprising cradles 36 connected to the frame 34; an actuating mechanism allows the cradles to be moved between an operating position (lying down) and an inoperative position (retracted).
  • the document USA Booth shows another wheelchair with a rocking device, where a lever 23 allows the wheels 15 to be raised or lowered relative to the cradles 10 so as to raise the latter from the ground.
  • the main object of the invention is therefore the entertainment of disabled people using a wheelchair, by providing a device for temporarily transforming a wheelchair into a rocking chair.
  • An important object of the invention is to ensure that the vehicle thus equipped with the transformation device according to the invention is of great stability and great operating safety, both in wheelchair mode and in fashion rocking chair.
  • Another important object of the invention is to provide means ensuring great stability to said vehicle during the transfer period between the wheelchair mode and the rocking chair mode.
  • An object of the invention is to reduce the space created by the rocking device installed on the chair rolling, when this one is inoperative position.
  • Means for extending said cradle member are also envisaged, these latter means being sensitive to said control means so as to be actuated when the cradle member is engaged in the operating position.
  • said rolling means consist of a pair of large laterally spaced wheels carrying said chair frame and a pair of small front wheels; the chair further comprising a friction member, carried by the front end of said cradle member and intended to act on said front wheels when the latter are inoperative, in order to prevent their free rolling which could be induced by the action of rocking.
  • said rolling means consist of a pair of large laterally spaced wheels carrying said chair frame and at least one small wheel at the front or at the rear of the large wheels; the chair characterized in that said cradle member comprises two laterally spaced tubular cradles, each tubular cradle having a front section, an intermediate section and a rear section connected end to end by two pivot members; said folding means comprising three connecting rod members each pivotally connecting said fixing means with a corresponding tubular cradle section.
  • said control means comprise an arm pivotally mounted to said frame fixing means by means of connecting rod means, said arm being capable of to be pivoted between two limit positions in a vertical plane and remaining accessible to a person using said seat means in its two limit positions.
  • said arm comprises an L-shaped tubular extension, one leg of which slidably engages the arm, said extension also comprising clamping means for fixing the extension on the arm in any intermediate sliding position in relation to the size of the person using said seat means.
  • said extension comprises a handle pivotally mounted at its upper end, so as to be able to freely pivot between a first horizontal position, transverse to the plane of the arm, and oriented towards the outside, to facilitate said chair in the operation of the control arm, and a second vertical position, in the plane of the arm and oriented towards the outside, in order to allow access to the upper section of the large wheels.
  • a cradle for a wheelchair said cradle being characterized by a rigid base with a radius of curvature greater than that of the rear wheels of said chair, a rocking frame fixed to said rigid base and installed at the axle of at least one of said rear wheels so as to be able to pivot around this axle, and lever arm control means for moving said rigid base between a lower operating limit position, so as to lift said rear wheels from the ground , and an upper inoperative limit position, in order to release it from the ground.
  • the invention relates to a cradle for a wheelchair consisting of large rear wheels, small front wheels, a seat between the rear wheels and a rigid frame connected to the wheels by axles and supporting the seat above the ground, said cradle being characterized by a rigid base with a large radius of curvature relative to that of said rear wheels, a tilting frame fixed to said rigid base and installed at the axle of at least one rear wheel so as to be able to pivot around this axle, first control means for moving said rigid base downwards into an operating limit position and thus lifting said rear wheels from the ground, second means control to move said rigid base upward in a limit position inoperative in order to clear the ground, and adjustment means for varying the angle between the wheelchair seat and the cradle in its operative limit position.
  • the cradle further comprises removable locking means, making it possible to temporarily block said rigid base in the sadite operating and ⁇ or inoperative limit position.
  • said rigid base is formed of at least two front and rear sections pivoted to one another, and further comprising folding means of said two cradle base sections acting at the same time as said second control means , so as to circumscribe the whole of the cradle inside said rear wheels when said base is in its inoperative limit position.
  • the cradle advantageously comprises a safety device constituted by a telescopic foot intended to act automatically by resting on the ground only when said rear section of cradle rests on the ground and when said second control means are actuated.
  • a wheelchair for the disabled, 10 consists of a rigid frame partially shown in C ( Figure 3) carried above the ground S by a pair of front wheels A and another pair of rear wheels B.
  • the seat is installed between the two rear wheels B, at the rigid axle D connecting each rear wheel to the rigid frame of the chair, while the footrest is installed between the two front wheels A, at the rigid axle E connecting each front wheel to the rigid frame of the chair.
  • the radius R of the rear wheels B is much larger than the diameter of the front wheels A.
  • the wheels B rotate freely on the axle D by its hub 20 (FIG. 3).
  • rocking members 12 are installed on the wheelchair 10, ie one on each inner side of the two large rear wheels B.
  • the second rocking member is the same as the first and works the same as the first, and the two must generally act together and at the same time. So our comments on the structure of the first flip-flop 12 apply to the second flap rocker, and our comments on the functioning of the first rocker member imply that the same operations are generally carried out simultaneously with the second rocker member.
  • each rocking member 12 consists of a frame 16, fixed to a pin 18 which can rotate freely around the axle D.
  • the inner frame 16 consists of two fixed arms 30 and 32 at 145 °, one of the other, the arm 30 being roughly twice as long as the arm 32.
  • the outer half-section of the arm 30 at 30a is bent at right angles to its inner half-section 30b, so as to define an axis making an angle of 55 ° relative to the axis defined by the arm 32.
  • the chassis 16 is fixed to the frame C of the wheelchair 10 by a threaded adjustment rod 82.
  • Two nuts 84 are installed at these two ends. More specifically, the intermediate section of the arm 30b and a horizontal portion C ′ of the frame C of the wheelchair 10 are connected by the rod 82. Therefore, the distance between the part 30b of the frame 16 and the part C ′ of the frame C of the chair can be adjusted to vary the angle between part 30b and part C ′ and thus adjust the angle between the seat of the chair and the cradles of the mechanism in the operating position of these cradles.
  • a three-pronged lever 24, 26, 28 can rotate relative to the axle D.
  • the center 14a of the lever 14 (FIG. 3) rotates freely around the journal 18.
  • Washers 22 are provided between the arm 30 and the center 14a and between the latter and the hub 20, to facilitate the relative movement thereof.
  • the branch 24 is at 80 ° from the branch 26 and the branch 28 is at 100 ° from the intermediate branch 26, the three branches being substantially the same length.
  • each arm 24 and 30a is connected to a long curved tube 34 via a pair of connecting rods 36 and a connecting rod 38, respectively, while the end of the arm 26 is connected by a connecting rod 40 to another curved tube 42, which is pivoted at 35 to the first tube 34.
  • the tubes 34 and 42 are hollow and square in section, they have the same radius of curvature, and, in their operating position shown in FIG. 2, they form an identical arc of a circle so as to define a cradle in order to use the wheelchair 10 as a rocking chair .
  • the connecting rods 36 are pivoted at 44 to a yoke 46 fixed eg by welding to an intermediate portion of the upper face of the tube 34, and at 48 to an outer intermediate section of the arm 24.
  • the connecting rod 38 is pivoted at 35 at the end rear of the tube 34 through an opening in the tube 42, and at 52 to a yoke 54 projecting from the end of the arm 30a of the chassis 16.
  • the connecting rod 40 it is pivoted at 56 at the end of the of the branch 26 and at 58 to a yoke 60 fixed to the upper face of the intermediate section of the tube 42 and projecting upwards thereof.
  • a tension spring 62 is fixed at one end 64 to the connecting rod 40 near the pivot axis 58, and at another end 66 to the branch 26 near the rear axle D of the wheelchair 10, so as to constrain the connecting rod 40 towards the branch 26 in one and the other of the two angular limit positions of the toggle formed by this connecting rod 40 and branch 26.
  • the end of the branch 32 is pivoted at 68 at the end of an operating lever 70 whose intermediate portion 72 (pivot) is connected to the end 74 (pivot) of the branch 28 by an angular rod 76.
  • the connecting rod 76 is curved at its intermediate portion at an angle of about 55 °, hear curved towards the axle D of the wheelchair.
  • the free end of the lever 70 is engaged by the cross section of a sickle-shaped arm, 78.
  • the free end of the sickle 78 ends in a control handle 80.
  • the axis 68 is parallel to the axle of the axle D.
  • the curvature of the arm 78 is such that its free end projects forward and downward, when the rocking member is in the operating position shown in FIG. 2, and towards the forward and upward, when the rocking member is in the inoperative or retracted position shown in FIG. 1.
  • the length of the tube 78 in the sleeve 70 is adjustable, to adjust to disabled people of various sizes.
  • FIGS. 1 and 4 a mechanism for extending the cradle tube 34 is provided, which is illustrated in FIGS. 1 and 4.
  • a tube 86 is installed through the open front end of the tube 34.
  • the tube 86 has a transverse screw 88 making projecting upward and passing through a window 90 formed on the upper face of the tube 34, in front of the pivot 44, so as to determine two limit positions of extension and retraction.
  • a sliding carriage 92 is fixed to the inner end of the tube 86 by means of a compression spring 94.
  • the carriage 92 has a hook 96 passing through a window 98 formed on the upper face of the tube 34, between the pivots 35 and 44.
  • a connecting rod 100 is pivoted at one end at 102 to the hook 96 and at the other end 104 to the short bent tab of a rod 106.
  • the rod 106 is pivoted at its intermediate section 108 to the intermediate section of the connecting rod 36.
  • the free end of the rod 106 carries a roller 107 which is engaged by a fork 25 formed by the end of the branch 24.
  • a telescopic leg 110 is fixed to the arm 30, making an angle of about 30 ° with the section 30a.
  • the foot 110 comprises a hollow housing 112, open at both ends and a rod 114 slidable through the housing 112 between two limit positions, so that the rod remains always connected to its housing.
  • a locking mechanism prevents it from going up, as shown in FIG. 2.
  • a stopper 116 is provided to be pushed by the user. the chair 10. Note that the rod 114 will be automatically extended when the cradle 34, 42 is lowered into the operating position, thanks to a transverse plate 118 fixed to the free end of the rod 114 and against which the lower face of the cradle tube 42.
  • the essence of the invention relates to the possibility of releasably locking the cradle member in two limit positions, one operating and according to which the cradle tubes 34, 42 and 84 are intended to come alternately into contact with the ground S with the exclusion of the rear wheels B, and the other inoperative according to which all the parts of the member cradle 12 with the exception of the control handle 80 are intended to be circumscribed within the radius of curvature of the wheel B so as to clear the ground S and not to interfere with the handling of the wheels B by the user.
  • the control handle is oriented upwards and backwards, the telescopic cradle tube 86 is retracted, and the tube 42 makes an almost right angle with the tube 34, and the chair 10 is supported on the ground by its wheels A, B.
  • the control handle 80 is pushed forward by the handicapped person on his chair 10, the lever 14 is constrained to rotate in the direction clockwise, since the frame 16 is anchored to the frame F of the chair by the adjustment rod 82.
  • the connecting rod 40 is pushed backwards by the arm 26 which sweeps to the left, and thus the cradle tube 42 will pivot around its axis 35 downwards to the position where it will have the same arc. than the cradle tube 34.
  • the spring 62 constrains the connecting rod 40 in rotation around the pivot 56 towards one or the other of its two limit positions.
  • the pivot 56 of the rod 40 abuts against the rod 36; on the other hand, in the operating position of the cradle (FIG. 2), the connecting rod 36 abuts against a stopper 37 fixed to the arm 24.
  • the cradle tube 34 consists of two half-sections pivoted to one another, the external half-section (front) being connected by a cable system to the sleeve 70 or to another mobile part giving the same result, so as to allow the pivoting of this front section anti-clockwise in order to further release the front of the wheels B from the chair.
  • the set of pivoted rods 100, 106 for the telescoping of the cradle tube 86 would be replaced by a system of cables and pulleys connected to the cradle 34 and to the connecting rod 36, as well as an additional curved arm pivoted to the axle D and intended to engage the said cables.
  • FIG. 10 -5-6 Another model of wheelchair to rocking chair transformation device, shown in Figures 10 -5-6, consists of two half-sections 122, 122 anchored on the inside of the wheels 126 of the wheelchair 128, and connected by cables 130 (detailed below). A fixed part of each half-section 122,124 is anchored to the frame 126 of the wheelchair 128, and another part is movable relative to the chair.
  • the fixed part of the rocking device comprises a cylindrical hub, 132, installed freely around the horizontal rotation shaft 134 of each large wheel 126 of the chair 128, a rigid L-shaped arm 138 of which a section 138a projection of the hub 132 towards the rear and ending in a lug 138b at a right angle to the plane of the seat, 140 of the chair 128, and an anchor bar 142 connecting the arm section 138a to a part 144 of the frame 124 situated lower and behind the rotation shaft 134.
  • the movable part comprises another arm 146, installed freely at one end on the shaft 134 so as to be able to pivot therein, this arm being of decreasing width up to its free end.
  • An outer section of the arm 146 is pivoted to the intermediate section of the front section 148 of the rocking base 150 by a connecting rod 152 (or a pair of spaced connecting rods forming a toggle joint), while an intermediate section of the arm 146 is pivoted to the section before the intermediate section 154 of the rocking base 150 by another connecting rod 156 (or a pair of spaced connecting rods forming a toggle joint).
  • a rod 158 is also fixed at one end to the inner section of the arm 146, opposite the shaft 134, said rod being pivotally connected to the intermediate section of the rear section 160 of the rocking base 150 at 161 via another connecting rod 162 (or pair of spaced connecting rods forming a toggle joint).
  • the sections 148 and 154, and 154 and 160 of the rocking base are pivoted end-to-end in pairs at 164, 166, respectively.
  • the length of the connecting rods 152, 156, 162 and of the rod 158 is such that, when the device 122 is in the inoperative position (FIG. 5), the arm 146 projects forward slightly upwards; the pivot point of the connecting rod 152 on the arm 146 is above the pivot point of the connecting rod 156 on this arm 146, the latter point being above the pivot point of the rod 158 on this same arm 146 ; the connecting rod 152 and the rod 158 are inclined downwards slightly forward, the connecting rod 156 downwards slightly backwards, and the connecting rod 162 forward slightly downwards; the sections 148, 154, 160 of the base are partially retracted inside the level of the arc of a circle of the wheel 126 of the chair in an irregular manner, above the lower part of the wheel, ie at- above the ground.
  • the rod 162 and the bar 142 occupy substantially parallel planes (spaced), so as not to hinder the translation of the latter, while the rod 158 is substantially coplanar with the rod 156.
  • the lower part of the rod 158 at above its lower pivot 158a, comprises a transverse stop 168 against which the intermediate section of the rod 156 can abut, in order to define a first inoperative limit position of the rocking device 122.
  • the section 138a of the arm 138 also includes a transverse stop 170 against which the same rod 158 can abut, to define a second limit operating position of the device 122.
  • Constraint means are provided to constrain the rod 158 into one or other of its limit positions (which correspond to the operating and inoperative positions of the rocking device 122): a first model is shown at 172 in FIGS. 16 to 18 , and a second model is shown at 174 in Figures 19-20.
  • the constraint means 172 comprises a cylindrical rod 176 pivoted at 175 at an enlarged end constituting a U-shaped block, 177, at the axis 158a by means of a link 178.
  • the rod 176 is slidably inserted in a bush 180 which is installed pivotally between the two connecting rods of the pair of spaced connecting rods 162, by means of a pivot axis 182.
  • a spiral spring 184 is inserted freely around the rod 176, between the blocks 176a and 180, and these latter blocks form bearing surfaces for this spring 184.
  • the spring 176 constrains the U-shaped block 176a in a direction opposite to the bush 180.
  • the rod 176 should not normally come to a stop in its so-called intermediate position, because of the continuity of the impulse of a pivoting movement of this rod around the axis 182 and of sliding in the bush 180, as is the low range of stability of the rod in its intermediate equilibrium position.
  • the second model 174 does not include a sliding rod or socket, only a spring 186 hooked at one end to the axis 161 and pivoted at the other end to a link 188 which is pivoted in 190 to the rod 158 above axis 158a.
  • the spring 186 protrudes forward above the connecting rod 162 (FIG. 19) unlike the first model whose rod 176 protrudes below the connecting rods 162 (FIG. 16) ; whereas in the operating position of the device 122, the spring 186 projects upwards and forwards from the connecting rod 162 (FIG. 20) unlike the first model whose rod 176 projects backwards and upwards connecting rods 162.
  • the effect is the same; this is explained in that in the second model, the spring 186 is not strictly speaking connected to the connecting rod 162.
  • a lever mechanism 192 allows a handicapped person seated on the seat 140 to easily constrain the arm 146 in pivoting.
  • This mechanism 192 comprises a rod 194 forming an obtuse angle with and fixed to the interior end of the arm 146 so as to be able to pivot with the latter.
  • An arm 196 projects forward from the hub 132 and is fixed thereto.
  • An L-shaped control lever 198 is pivoted at the front end of the arm 196 by means of a link 200. (This link 200 can be of varying length, see at 200 ′ in FIGS. 12-13)
  • the end lower lever 198 is pivoted at the upper end of the rod 194 by a connecting rod 202.
  • the free section 198a of the control lever will preferably be vertical ( Figure 5) and its handle 204 will be near the elbow support 206 of the chair 128.
  • the free section 198a will be inclined forward and upward, but not too far forward so that only a forward movement of the arm of the disabled person is necessary. without having to tilt the torso forward to complete the stroke of the lever 192, because it is necessary to provide that certain handicapped people may be paralyzed of the abdominal muscles.
  • FIG. 7 shows that it would be desirable for the handle 204 to be pivoted to the control lever 198a for engaging the rocking device 122, so as to define a first position indicated by dotted lines, where the handle 204a is vertical but offset to the above the wheel 126, and a second position (not shown) where the handle 204a is horizontal and oriented towards the seat 140 so as to completely release the top of the wheel 126.
  • This in order to allow, when the cradle is not not in function, better access to the hoop 208 of wheel 126 which hoop conventionally drives the wheels of the chair in rotation when it is itself driven in rotation under the action of the arms of the disabled.
  • FIG. 11 shows that it would be profitable to provide a means of stopping the undesirable rotation of the small front wheels 210 when the cradle 150 is put into operation, said rotation being able to be induced by the simple rocking of the chair 128. It can be act with a spiral spring 212, of the "door stopper on the wall” type, fixed by a hook 214 at the front end of each front section 148 of the cradle 150, and slightly offset from the front plane of the small wheels 210, to immobilize these front wheels by lateral friction.
  • Figures 8 to 10 suggest one of the many advantageous features associated with the present invention. This is the possibility for a disabled person to actuate with one arm and successively, each of the two control levers 198 of the rocking devices. Indeed, the disabled person can be paralyzed with one arm, or even be a penguin, and care must be taken that by actuating the lever 198 on one side before that on the other side, the chair 128 is not overturned because of the imbalance thus generated. This danger is avoided thanks to the use of a system of crossed cables 130.
  • Each cable 130 is connected at one end to an upper anchoring point of a rocking device 122, and at the other end to the end of a foot 216 pivoted at 218 to a sleeve 220 which is transversely sliding in a guide block 222 anchored to the frame 138b.
  • the base 216 is also pivoted at its intermediate section at 224 to an arm 226 which retains it at the frame 138b.
  • Springs 228 and 230 constrain the bars 220 and 216 so that the foot 216 abuts on the body of the bar 138b.
  • the cradle 150 it would be desirable, when the latter is constrained in the operating position, ie when its three sections 148, 154, 160 are straightened, in a continuous arc, that the cradle lengthens at the same time. This is why provision is also made according to the invention for extending the cradle, comprising a modified version of the front section of the cradle, at 148 ′ (FIGS. 12-14).
  • the tube 148 ′ is hollow, open at the front and engaged by another tube 236 with a smaller diameter.
  • the stopper 212 is fixed to the free end of the tube 236.
  • the tube 236 is constrained in the inserted position in the tube 148 ′ by a spring 238 anchored to an interior section of the tube 148 ′.
  • a cable 240 (FIG. 14) is fixed in an intermediate position 242 of the telescopic tube 236 and protrudes from the rear of the tube 148 ′ by an upper orifice 244. Thanks to pulley means, by pulling the cable 240 which projects above the orifice 244, the telescopic tube lengthens, against the retraction stress of the internal spring 238.
  • pulley means comprise a first pulley 246, mounted at the front end of the telescopic arm 236 , and a second pulley 248, mounted at the rear end of the cradle section 148 ′ opposite the orifice 244, and the cable 240 extends from the anchoring point 242, above the pulley 246 and around its front part, then returns to pulley 246 to pass below and behind it to go up through orifice 244.
  • a rod 252 is installed between the pair of connecting rods 156, of which the upper end is mounted at an upper part thereof on a pivot axis 254 transverse to the connecting rods 156, and the lower end of which stops below the orifice 244.
  • the cable 240 is anchored at 256 to the lower end of the rod 252.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Handcart (AREA)
EP89118223A 1989-10-02 1989-10-02 Schaukeleinrichtung für Rollstuhl Withdrawn EP0421001A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP89118223A EP0421001A1 (de) 1989-10-02 1989-10-02 Schaukeleinrichtung für Rollstuhl

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89118223A EP0421001A1 (de) 1989-10-02 1989-10-02 Schaukeleinrichtung für Rollstuhl

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EP0421001A1 true EP0421001A1 (de) 1991-04-10

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EP89118223A Withdrawn EP0421001A1 (de) 1989-10-02 1989-10-02 Schaukeleinrichtung für Rollstuhl

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29614136U1 (de) * 1996-08-16 1996-10-02 Ferdinand Koller & Sohn GmbH & Co KG, 29227 Celle Rollstuhlschaukel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1113279A (fr) * 1954-03-26 1956-03-26 Fauteuil roulant pour enfant, transformable en fauteuil basculant
US3415531A (en) * 1966-09-09 1968-12-10 Louise A. Kiel Rocking wheel chair
US4118046A (en) * 1977-07-14 1978-10-03 Vaughan Curtis T Rocker assembly for wheelchairs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1113279A (fr) * 1954-03-26 1956-03-26 Fauteuil roulant pour enfant, transformable en fauteuil basculant
US3415531A (en) * 1966-09-09 1968-12-10 Louise A. Kiel Rocking wheel chair
US4118046A (en) * 1977-07-14 1978-10-03 Vaughan Curtis T Rocker assembly for wheelchairs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29614136U1 (de) * 1996-08-16 1996-10-02 Ferdinand Koller & Sohn GmbH & Co KG, 29227 Celle Rollstuhlschaukel

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