WO1994021208A1 - Fauteuil roulant - Google Patents

Fauteuil roulant Download PDF

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Publication number
WO1994021208A1
WO1994021208A1 PCT/EP1994/000794 EP9400794W WO9421208A1 WO 1994021208 A1 WO1994021208 A1 WO 1994021208A1 EP 9400794 W EP9400794 W EP 9400794W WO 9421208 A1 WO9421208 A1 WO 9421208A1
Authority
WO
WIPO (PCT)
Prior art keywords
wheels
drive wheels
wheelchair
wheelchair according
seat
Prior art date
Application number
PCT/EP1994/000794
Other languages
German (de)
English (en)
Inventor
Harald Reinhardt
Original Assignee
Harald Reinhardt
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
Priority claimed from JP5347089A external-priority patent/JPH07255785A/ja
Application filed by Harald Reinhardt filed Critical Harald Reinhardt
Priority to EP94910417A priority Critical patent/EP0689410B1/fr
Priority to DE59401085T priority patent/DE59401085D1/de
Publication of WO1994021208A1 publication Critical patent/WO1994021208A1/fr

Links

Classifications

    • 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
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • A61G5/041—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven having a specific drive-type
    • A61G5/043—Mid wheel drive
    • 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
    • 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
    • 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
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • 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
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/107—Arrangements for adjusting the seat positioning the whole seat forward or rearward
    • 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
    • A61G5/1056—Arrangements for adjusting the seat
    • A61G5/1075—Arrangements for adjusting the seat tilting the whole seat backwards

Definitions

  • the invention relates to a wheelchair with a seat, two side drive wheels and front and rear wheels which are freely pivotable about respective substantially vertical axes, the drive wheels of which are at least approximately coaxially mounted on an axis line which runs transversely under the seat surface, and between a position are adjustable for straight travel and a position for lateral travel.
  • an electrically powered wheelchair is known ("LEM", brochure from Santicianshaus Wißmann & Co., Düren), which is on the underside a frame has five wheels distributed around the circumference, each pivotable about a vertical axis and coupled in this pivoting, and a central drive wheel, the pivoting position of which is also coupled to the running wheels and, moreover, is coupled to the seat located above the frame, which is therefore can turn on the spot and continue in any direction.
  • the design effort for this wheelchair is very high.
  • a transverse displacement of wheelchairs is known per se (DE-A 31 33 636), namely with the aid of rollers which are extended in such a way that the drive wheels rigidly arranged for forward travel are lifted off the ground for the transverse displacement.
  • a wheelchair is also known (DE-A 30 05 871), which comprises two large drive wheels on an axis which runs approximately centrally under the seat surface and further comprises a frame cross with four wheels, the cross point of which is also centered under the seat ⁇ area.
  • This wheelchair is already relatively manoeuvrable, since it can turn on the spot by turning the two drive wheels in opposite directions, but maneuvering for a change of location takes a certain amount of time and it is not possible to overcome thresholds and steps.
  • the drive wheels including their respective axle bearings, individually about a respective essentially vertical axis between an applied position for straight travel and a transverse position for lateral travel are pivotable and that the wheelchair consists of a first frame part comprising a chassis with the drive wheels and the rear or the front wheels and a second frame part comprising the seat surface with possible backrests and the front or rear wheels, which mutually about a transverse horizontal pivot axis are pivotable.
  • the patient sitting in a wheelchair can, for example, roll back and forth along a furniture edge without having to turn the chair and himself, even on uneven floors, but he can also If necessary, turn on the spot and finally, without losing contact of the drive wheels with the ground even briefly, overcome thresholds up to a few centimeters high.
  • the wheelchair can be a manual gearbox or a motorized wheelchair; the measures according to the invention prove to be advantageous in both cases. However, they are preferably used in a hand-operated wheelchair, which is particularly suitable for agile movements and quick adjustments due to its smaller dimensions and lower weight.
  • the invention can be used both in a rigid and in a collapsible wheelchair, but the use of the measures according to the invention in a rigid wheelchair, such as corresponds to the active and sports wheelchairs, is preferred, since these wheelchairs are due to their greater stability compared to the weight are better suited for rapid movements and the wheelchair according to the invention is particularly suitable for narrow apartments and the like, while its maneuverability, for example outdoors, is less of an issue.
  • the line of the axes of the drive wheels in the applied position in which these wheels are essentially coaxial to one another, preferably runs transversely below the central region of the seat surface, that is to say in front of the user's center of gravity, and the pivot axis of the frame parts is preferably opposite one another just below the seat and slightly behind the patient's center of gravity, which improves the possibility of turning on the spot with minimal traffic space requirements and also the pivoting of the frame part, which includes the seat and preferably the front wheels, caused by the patient's upper body movement is facilitated.
  • the pivoting angle of the drive wheels about the respective vertical axis is preferably 90 °, the wheels in the position for straight travel (0 °) and for transverse travel (90 °) and, if necessary, also in one or more intermediate positions by simple measures, for example should be lockable with the help of a perforated sheet.
  • the wheels can also be coupled to one another for pivoting, which is advantageous, for example, for one-armed paralyzed patients, since the two drive wheels (except when cornering) must be parallel to each other in every pivoting position for driving.
  • the possibility of the transverse position means that the size of the wheels is limited if the wheels are not to be mounted very far outwards, since they partially pivot under the seat.
  • a preferred construction here is that according to claim 5, in which the ratio of the wheel diameter to the seat width is such that the transverse wheels overlap on both sides in segments. If, on the other hand, the wheels have a common central plane in the transverse position, the The distance between their vertical pivot axes must not be less than the wheel diameter, unless the pivot angle is to be limited to an angle below 90 °.
  • This version is therefore most suitable for mechanically, especially electrically powered, wheelchairs in which the wheel size is not a critical size.
  • the drive wheel pivoting can also be designed to be electrically controllable.
  • the rear and front wheels are naturally used for support, whereby tipping over backwards is particularly avoided.
  • the tiltable pivoting of the frames and thus the possibility of lifting the front and / or rear wheels without losing contact with the other wheels and the drive wheels enables the driver to drive over thresholds.
  • the mutually tiltable frames also prove to be advantageous when driving sideways with transverse drive wheels, in particular with slightly different ground levels between the front and rear wheels. In such a constellation, in which the drive wheels are located above a type of trough or even just above a floor recess, the drive would be interrupted in the case of a rigid frame.
  • the pivotability of the frame parts relative to one another is, however, preferably limited in terms of angle, in order to prevent the entire frame part comprising the seat surface from tilting backwards by 90 ° due to awkward movements.
  • a threshold of 5 cm in height can be overcome in a wheelchair of normal size.
  • the provision of driving over higher thresholds is only of limited use in hand-operated wheelchairs, since the driving force required for this is very high.
  • the construction is particularly expedient in that the pivot axis of the frame parts lies behind one another behind the patient's center of gravity and the frame part, which contains the seat surface, carries the front wheels; in this case, the patient can easily raise the front wheels by throwing his upper body backwards and bring them over a threshold. If it is reversed, that is to say that the pivot axis lies in front of the center of gravity and the rear wheels are connected to the seat frame part, it can tilt the seat forward, for example by tilting the upper body forward, the rear wheels Raise the impellers in order to then overcome a threshold in reverse travel.
  • pivot axis of the frame parts is close to the center of gravity, for example also in the wheel axis of the drive wheels in their straight-ahead position.
  • springs must be provided between the frame parts and it is more difficult for the patient to lift the front or rear wheels.
  • FIG. 1 shows a side view of a wheelchair according to the invention
  • FIG. 2 shows a front view of the wheelchair according to FIG. 1
  • 3 shows a front view of the wheelchair according to FIG. 1 in a different working position
  • FIG. 4 shows a top view of the wheelchair in the first working position, with the seat partially cut out to make the parts underneath visible
  • Figure 5 is a plan view of the wheelchair in the second working position.
  • 6 shows a side view of the wheelchair corresponding to FIG. 1 on a reduced scale, but partly in a separate representation of its frame parts
  • FIG. 7 is a partial view corresponding to the representation of FIG. 2 of a modified embodiment, on the same scale as FIG. 2
  • 8 shows a view corresponding to FIG. 4 of a modified embodiment
  • FIG. 9 views corresponding to FIG. 6 of the wheelchair according to FIG. 8, with part of the left drive wheel being cut away
  • FIG. 10 is a view corresponding to FIG. 1 of a further modification.
  • first frame part 1 and a second frame part 2 which are connected to one another in a hinge-like manner.
  • 6 are the two Frame parts are shown not only in the assembled state but also in the separated state.
  • first frame part 1 which represents a type of chassis, there are a left drive wheel 3, a right drive wheel 4 and a single rear wheel 5.
  • first frame part 1 which represents a type of chassis
  • first frame part 1 which represents a type of chassis
  • first frame part 1 which represents a type of chassis
  • first frame part 1 which represents a type of chassis
  • first frame part 1 which represents a type of chassis
  • two rear wheels can also be provided, for example.
  • a handrail ring 6 is attached to each of the drive wheels 2 and 3.
  • the second frame part 2 comprises a seat surface 10 and a backrest 11 (possibly existing side backrests are not shown) as well as two front running wheels 12 arranged approximately on the line of the driving wheels 3 and 4.
  • the running wheels can be pivoted in the usual way about respective vertical axes
  • the frame part 1 consists essentially of square tube and the frame part 2 essentially consists of a round tube, which in places is covered with fabric.
  • the frame parts 1 and 2 are connected to one another via a pivoting or hinge axis 16, which is determined by two ball joints 17 in the example shown.
  • a bracket 18 on both sides of the second frame part 2 is used to hold the ball joints 17, which tab protrudes from the underside of the circumference of the seat surface 10, so that the axis 16 extends just below the seat surface in the transverse direction, that is to say at 90 ° to the straight forward direction .
  • the ball-and-socket joints 17 lie at a distance of 10 to 15 cm from the edge between the seat surface 10 and the backrest 11, that is to say still behind the perpendicular line running through the center of gravity of an average patient, which is indicated at 19 in FIG. 1 is.
  • a cross member 23 belonging to the second frame part 2 and running transversely under the seat surface 10 sits on a cross member 24 of the first frame partly 1.
  • the cross members 23 and 24 are, in relation to the normal direction of travel of the wheelchair, in front of the hinge axis 16, in the example described also in front of the center of gravity line 19.
  • the frame parts have a pivoting angle of 0 ° relative to one another .
  • the second frame part 2 can be pivoted clockwise about the axis 16 relative to the first frame part 1, as shown in FIG. 1, whereby the front Lift the impellers 12 off the ground.
  • the pivoting is limited by stop elements 25 indicated in the drawing, which limit the pivoting angle to an order of magnitude of 10 °. Such pivoting is sufficient to raise the front wheels 12 about 5 cm above the ground.
  • the first frame 1 consists of a frame welded construction made of metal with a bracket 29 which supports the rear wheel 5 and which extends obliquely from an edge region into the region of the longitudinal center plane of the wheelchair.
  • the rear wheel 5 lies in the plan behind the backrest 11 and thus at least a sufficient distance behind the plumb line 19, even when the frame part 2 is pivoted back.
  • knuckle bolts 31 are mounted, which in turn the stub axles for bearings 32 of the drive wheels 3 and 4 wear.
  • the drive wheels 3 and 4 can thus be pivoted about the respective bearing axis of the bearing 30 in question, namely by a pivoting angle of 90 °, starting from the straight-ahead position according to FIGS. 1, 2 and 4.
  • FIG two bearings 30 and the two halves of the kingpin 31 for the wheel 3 above and below the Wheel bearing 32 visible.
  • the bearings 32 are located approximately at the distance of the wheel radius under the plane of the seating surface 10 when development in plan view of the side of the seat surface, and are Hästel ⁇ for straight travel approximately coaxially "to each other. In the plan view, they are located approximately beneath the center of the seat surface 10, that is to say in front of the line 19 running through the center of gravity of the patient. The center of gravity thus engages in a triangular plan between the bearings of the drive wheels 3 and 4 and the rear wheel 5.
  • the pivoting is carried out for each drive wheel by a pivot lever which is connected to the relevant kingpin 31, namely a pivot lever 33 for the left drive wheel 3 and a pivot lever 34 for the right drive wheel 4.
  • the pivot levers are used to simplify the illustration 33 and 34 are not shown in FIGS. 2, 4 and 5. They are in the working position according to FIGS. 1 and 2, that is to say for driving straight ahead, in the area between the drive wheels 3 and 4, the pivoting lever 33 being directed towards the front and the pivoting lever 34 towards the rear.
  • the pivoting range of the wheels 3 and 4 is limited by stops so that each of the wheels can be pivoted by 90 ° from the initially parallel position according to FIGS. 1 and 2, namely the wheel 3 to the rear and the wheel 4 to the front, wherein they are in the end positions again have parallel center planes that have a mutual distance corresponding to twice the length of the steering knuckle between the axis of the bearing 30 and the center of the wheel bearing.
  • This distance is not only sufficient to allow a segment-wise overlap of the two wheels, as can be seen in FIG. 3 in the area 38, but also between the wheels 3 and 4, which are thus transverse, there is still space for the load-bearing frame part of the first frame part 1 .
  • the drive wheels 3 and 4 are in their pivoting end Positions and if necessary also lockable in one or more intermediate positions.
  • the retraction z. B. can be controlled by depressing the relevant lever 33 or 34.
  • Intermediate pivot positions between the end positions can have the advantage that a larger number of directions of travel is made available thereby and in a given intermediate position there is also the minimum of the traffic area requirement.
  • the detents are advantageous in that the drive wheels 3 and 4 must always be exactly parallel in each straight-ahead driving position in order to produce a defined direction of travel.
  • a non-parallel wheel position can be used to quickly correct the angular position of the wheelchair relative to the work surface edge or the like.
  • the pivoting movements of the wheels 3 and 4 can also be coupled to one another in a manner not shown, for example by a cable or chain hoist, by a connecting shaft which engages via bevel gears on bevel gears sitting on the steering knuckles, or in one appropriate reduction also via pull and push rods.
  • one of the levers 33 and 34 can optionally be omitted, for example if the patient is only able to operate on one side anyway.
  • the drive wheels 3 and 4 have a diameter which in the example shown is slightly smaller than the height of the underside of the seat surface 10 above the floor.
  • the pivoting of the wheels 3 and 4 is possible in such a way that their vertical diameter just comes to lie under the seat surface 10. If the wheel diameter is larger, the axes of the bearings 30 must be moved further outwards.
  • large diameters of the drive wheels 3 and 4 are desired. The training shown represents the optimum between these opposite demands.
  • the wheelchair can be built collapsible, e.g. B in that the horizontal struts of the frame can be telescopically pushed together or folded like scissors in a manner known per se.
  • the wheelchair user can turn in front of the work surface by turning on the spot and turning 90 ° again position. This is quicker, however, if he puts the drive wheels 3 and 4 crossways and can now drive to the right or left as desired without turning the seat 10.
  • the wheels 5 and 12 each set themselves in the new direction of travel.
  • the wheelchair user can adjust his basic orientation not only by swiveling back and counter-rotating the drive wheels, but also by bringing the drive wheels into different swivel positions, in particular one in a straight-ahead position and one in the transverse position, and then by a small rotation of the straight-out drive wheel cause the wheelchair to rotate about the base point of the transverse drive wheel. If the wheel axes are not at right angles and not parallel to one another, the base point of the transverse drive wheel also performs a certain rolling movement in this adjustment.
  • a floor step runs parallel to the seat surface or the floor is not completely flat, for example in the form of a carpet edge, a channel or a grate or in the case of hollows or bumps in the floor
  • the second frame part takes on the first frame part a slight incline without affecting the ability of the wheelchair to move in the transverse direction.
  • the drive wheels always stay on the ground thanks to the frame, which can be folded in at right angles to the direction of travel.
  • drive wheels 3 and 4 sit on steering knuckles and can therefore overlap in area 38.
  • smaller wheel diameters can also be used and the wheel can be pivotable about an axis that coincides with the vertical wheel diameter or the vertical axis.
  • a corresponding embodiment is shown schematically as a partial representation in FIG. 7.
  • a drive wheel 43 which is seated on the first frame part 1 as in the first embodiment, can be pivoted about a pivot axis 44 which lies in the center plane of the wheel. Accordingly, it sits on a swivel bracket that is angled at the end over the wheel.
  • a motor 46 with a reduction gear also sits on the swivel bracket 45 and can be swiveled together with the wheel 43.
  • the swiveling movement can also be electrically driven, which may be necessary depending on the type of disability of the wheelchair user.
  • the modification according to FIGS. 8 and 9 serves the purpose of adapting the wheelchair to the personal dimensions of the patient.
  • the force to be exerted on the backrest 11 for pivoting the frame depends on the distance between the plumb line 19 and the hinge axis 16. If line 9 is shifted forward from an average value due to the individual figure of the patient, it could result that the force required for lifting the running wheels 12 is too high for the patient. According to FIGS. 8 and 9, this distance can be adjusted.
  • the first frame part 1 has instead of the fixed ball joints 17 a bracket-like support body 51, which - in the example shown - has five holes 52, and the second frame part 2 has two support brackets 53 which surround the support bracket 51 and each of which also has five holes 54 , which are arranged in the same way as the holes 52 and are aligned in pairs for the two brackets 53. In this respect, the arrangement could also be reversed.
  • the row of holes 52 and the rows of holes 54 are aligned with one another and one of the holes 52 and a pair of holes 54 are connected to one another by a bolt 55, which then forms the hinge axis.
  • Fig. 8 shows the position of the pin 55 for a heavy patient and Fig. 9 for a slim patient.
  • FIG. 10 shows, in addition to the displaceable hinge axis, a possibility for lifting the impeller 12 not by throwing the upper body backwards, but by actuating a lever 61 which is fastened on an axis 62 which is rotatably mounted on a bracket 63 of the frame part 1 and when the frame part 2 is pivoted relative to the frame part 1 via a cam, a curve or a thumb 64 against the weight of the patient.
  • the axis 62 runs horizontally under the seat 10.
  • Such a device for lifting the frame part 2 is particularly useful for patients who suffer from multiple sclerosis and no longer have enough strength to pivot the frame parts of the embodiments according to FIGS. 1 to 6 against one another. If the patient's performance is even lower, the bracket 63 can also be rotated by an electrical or other drive.

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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)

Abstract

Dans un fauteuil roulant avec surface de siège, deux roues de commande latérales et roues auxiliaires avant et arrière pivotant librement autour d'axes sensiblement verticaux, les roues de commande étant logées au moins approximativement coaxialement sur une ligne d'axe passant transversalement au-dessous de la zone médiane de la surface du siège, les roues de commande, y compris leurs paliers d'essieu, peuvent pivoter séparément autour d'un axe correspondant, sensiblement vertical, entre la position de marche rectiligne et la position de marche transversale. La première partie du cadre comporte un châssis avec les roues de commande et les roues auxiliaires arrière, tandis que la deuxième partie du cadre comprend la surface du siège et éventuellement le dossier, ainsi que les roues auxiliaires avant, ces parties pouvant pivoter l'une par rapport à l'autre autour d'un axe horizontal transversal.
PCT/EP1994/000794 1993-03-16 1994-03-15 Fauteuil roulant WO1994021208A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP94910417A EP0689410B1 (fr) 1993-03-16 1994-03-15 Fauteuil roulant
DE59401085T DE59401085D1 (de) 1993-03-16 1994-03-15 Rollstuhl

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP93104287.3 1993-03-16
EP93104287 1993-03-16
JP5/347089 1993-12-27
JP5347089A JPH07255785A (ja) 1993-03-16 1993-12-27 車椅子

Publications (1)

Publication Number Publication Date
WO1994021208A1 true WO1994021208A1 (fr) 1994-09-29

Family

ID=26133126

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1994/000794 WO1994021208A1 (fr) 1993-03-16 1994-03-15 Fauteuil roulant

Country Status (2)

Country Link
DE (1) DE59401085D1 (fr)
WO (1) WO1994021208A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2383822A1 (fr) * 1977-03-14 1978-10-13 Sentralinst For Ind Forskning Chariot inferieur
DE3005871A1 (de) * 1980-02-16 1981-08-27 Kleist, Johann-Georg, Dr., 2000 Hamburg Rollstuhl
DE3133636A1 (de) * 1981-08-26 1983-03-10 Hilmar 2000 Hamburg Feutlinske Rangieranordnung an einem rollstuhl

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2383822A1 (fr) * 1977-03-14 1978-10-13 Sentralinst For Ind Forskning Chariot inferieur
DE3005871A1 (de) * 1980-02-16 1981-08-27 Kleist, Johann-Georg, Dr., 2000 Hamburg Rollstuhl
DE3133636A1 (de) * 1981-08-26 1983-03-10 Hilmar 2000 Hamburg Feutlinske Rangieranordnung an einem rollstuhl

Also Published As

Publication number Publication date
DE59401085D1 (de) 1997-01-02

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