WO2003104133A2 - Dispositif de levage pour fauteuil roulant a bras unique - Google Patents

Dispositif de levage pour fauteuil roulant a bras unique Download PDF

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Publication number
WO2003104133A2
WO2003104133A2 PCT/US2003/017667 US0317667W WO03104133A2 WO 2003104133 A2 WO2003104133 A2 WO 2003104133A2 US 0317667 W US0317667 W US 0317667W WO 03104133 A2 WO03104133 A2 WO 03104133A2
Authority
WO
WIPO (PCT)
Prior art keywords
platform
hinge
assembly
fold
platform assembly
Prior art date
Application number
PCT/US2003/017667
Other languages
English (en)
Other versions
WO2003104133A3 (fr
Inventor
Ray Reynolds
Original Assignee
Ricon Corporation
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 Ricon Corporation filed Critical Ricon Corporation
Priority to AU2003237389A priority Critical patent/AU2003237389A1/en
Publication of WO2003104133A2 publication Critical patent/WO2003104133A2/fr
Publication of WO2003104133A3 publication Critical patent/WO2003104133A3/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
    • A61G3/00—Ambulance aspects of vehicles; Vehicles with special provisions for transporting patients or disabled persons, or their personal conveyances, e.g. for facilitating access of, or for loading, wheelchairs
    • A61G3/02—Loading or unloading personal conveyances; Facilitating access of patients or disabled persons to, or exit from, vehicles
    • A61G3/06—Transfer using ramps, lifts or the like
    • 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
    • A61G3/00—Ambulance aspects of vehicles; Vehicles with special provisions for transporting patients or disabled persons, or their personal conveyances, e.g. for facilitating access of, or for loading, wheelchairs
    • A61G3/02—Loading or unloading personal conveyances; Facilitating access of patients or disabled persons to, or exit from, vehicles
    • A61G3/06—Transfer using ramps, lifts or the like
    • A61G3/062—Transfer using ramps, lifts or the like using lifts connected to the vehicle

Definitions

  • the present invention relates generally to wheelchair platform lift assemblies, and more particularly, to a wheelchair lift that folds into a compact state.
  • Various platform devices such as lifts and ramps, have been proposed to assist wheelchair users in getting in and out of vehicles.
  • the platform device must be large enough and sufficiently durable to support the wheelchair and a person thereon during the loading and unloading process.
  • a typical platform device can be four to five feet long.
  • a problem with lengthy and bulky platforms is that it can be difficult to fit the platform within a standard-size vehicle.
  • the entry way may have to be widened and components of the vehicle may have to be rearranged to accommodate the sizable platform.
  • To avoid the inconvenience of installing a sizable platform there is a need for new passenger platforms that have a compact configuration when installed in a vehicle.
  • the tilt correction mechanism is a secondary operation that requires a separate actuator and a separate control.
  • the tilt correction mechanism To operate the tilt correction mechanism, the platform must first be lifted off of the ground. The user then uses a separate control switch to tilt the platform to compensate for the roll of the vehicle. Once the user has reached a comfortable tilt position, the main control switch is activated to proceed with the motion of the platform into or out of the vehicle.
  • the disadvantage of this system is that a separate actuator and control switch is required for the tilt correction mechanism, complicating the mechanical structure and operation of the platform device.
  • Another known solution to the tilting problem is to adjust the platform so that it is permanently tilted towards the vehicle, thus accommodating for the tilt away from the vehicle caused by the rolling of the suspension.
  • the disadvantage of permanently tilting the platform towards the vehicle is that, if the platform is adjusted with too much tilt, the front of the platform does not rest on the ground but remains tilted upwards, above the ground. This problem is especially common on roads with a heavy crown, such as a road with deep gutters.
  • a wheelchair lift configured to be foldable into quadrants by a two-step folding process, wherein the first step folds the platform assembly crosswise and the second step folds the platform assembly lengthwise.
  • the platform assembly includes first and second inner platforms, and first and second outer platforms.
  • first and second inner platforms fold with respect to the first and second outer platforms.
  • second inner and outer platforms fold with respect to the first inner and outer platforms.
  • the wheelchair lift preferably includes a storage configuration wherein the two- step folding process has been completed.
  • the platforms are pivotally connected by hinges.
  • the first and second inner platforms are connected to the first and second outer platforms by a first hinge, which pivots about a first axis.
  • the first inner platform is connected to the second inner platform by a second hinge that pivots about a second axis.
  • the first outer platform is connected to the second outer platform by a third hinge that pivots about a third axis.
  • the third hinge is configured to have a pivot axis that is spaced apart from the third hinge, and co-linear with the pivot axis of the second hinge.
  • the wheelchair lift includes a first fold actuating assembly, to fold the platform assembly crosswise, and a second fold actuating assembly, to fold the platform assembly lengthwise.
  • the first fold actuating assembly includes a linking arm pivotally connected to the platform assembly at a second connection point and a platform actuator bar connected to the platform assembly at a second connection point, spaced apart from the first connection point.
  • the first fold actuating assembly folds the platform crosswise by exerting force on the platform assembly at a second connection point in a manner that causes the platform assembly to rotate about the first connection point.
  • the exertion of pressure is preferably accomplished by the engagement of a cam with a cam follower on the platform actuator bar.
  • the second fold actuating mechanism is preferably an electrical actuator, and more preferably, an actuator as described in U.S. Provisional Patent Application No. 60/386,338 filed June 6, 2002 and Serial No. for Clutch-Driven Limited Force Actuator filed concurrently herewith, the contents of which are incorporated herein by reference.
  • the wheelchair lift of the present invention preferably includes a mechanism that causes the platform assembly to tilt upward immediately prior to the lifting of the platform assembly, and to tilt downward immediately after the lowering of the platform assembly.
  • the tilting of the platform assembly is accomplished by using the same actuating power system used to lower and raise the platform and does not require a separate actuator or a separate control switch.
  • the tilting upward immediately prior to the raising of the platform and the tilting downward is sequenced immediately after the lowering of the platform without requiring any intervening action on the part of the lift user.
  • FIG. 2 depicts a top plan view of a preferred embodiment of the wheelchair lift of the present invention
  • FIG. 3 depicts an elevational side view of a preferred embodiment of the wheelchair lift of the present invention
  • FIG. 4 depicts an elevational front view of a preferred embodiment of the wheelchair lift of the present invention
  • FIG. 5A is an enlarged view of the platform tilt mechanism of FIG. 5;
  • FIG. 6 depicts a partial cross-section side view of a preferred embodiment of the wheelchair lift of the present invention showing the platform assembly tilted downward;
  • FIG. 7 is a top plan view of a preferred embodiment of the wheelchair lift of the present invention in an entry level configuration
  • FIG. 8 is a perspective view of a preferred embodiment of the wheel chair lift of the present invention showing the first fold of the two-step folding process of the platform assembly
  • FIG. 9 is a perspective view of a preferred embodiment of the present invention showing the wheelchair lift upon completion of the first fold
  • FIG. 11 is a perspective view of a preferred embodiment of the present invention showing the wheelchair lift upon completion of the second fold;
  • FIG. 13 is a top plan view of a preferred embodiment of the floating pivot structural hinge of the present invention, shown in a fully expanded position;
  • FIG. 14 is an exploded view of the floating pivot structural hinge of FIG. 13;
  • FIG. 15 is a top plan view of the floating pivot structural hinge of FIG. 13, shown in a contracted position;
  • FIG. 16 is a cross-section view of the floating pivot structural hinge of FIG. 15 taken along line 16—16;
  • FIG. 17 is a partial cut-out perspective view of a preferred embodiment of the floating pivot structural hinge, showing the link members connected to the block hinges;
  • FIG. 18 is an elevational side view of a preferred embodiment of a floating pivot structural hinge of the present invention.
  • the mounting assembly 12 is preferably housed in a control tower 16.
  • the control tower 16 also houses the power actuating mechanism 20 for actuating the lift from a folded, stowed configuration (shown in Figure 11) to an entry level configuration (flush with the vehicle floor, shown in Figure 3), to a ground level configuration (shown in Figure 1) .
  • the power actuating mechanism 20 can be powered by electrical, hydraulic or pneumatic means, or other source of energy known to those skilled in the art.
  • a hydraulic actuating system is described herein.
  • the hydraulic actuating system includes a hydraulic pump, a hydraulic power unit, and a piston and cylinder assembly 22 operatively connected to the hydraulic pump and the hydraulic power unit.
  • the piston and cylinder assembly 22 is preferably installed in a parallelogram actuating linkage structure 30 fixed to the control tower 16. It is envisioned that the parallelogram actuating linkage structure 30 can be replaced with other linkage structures known in the art without departing from the scope and spirit of the present invention.
  • the linkage structure 30 preferably includes a top actuating arm 32 and a bottom actuating arm 34 which are located substantially parallel to each other.
  • the first ends 36, 38 of the top and bottom actuating arms 32, 34 are pivotally connected to the control tower 16.
  • the second ends 42, 44 of the top and bottom actuating arms 32, 34 are pivotally connected to a linking arm 40.
  • the linking arm 40 is vertically aligned.
  • the platform assembly 50 of the lift includes first and second rear platforms 52, 54 and first and second front platforms 56, 58.
  • the first and second rear platforms 52, 54 are pivotally attached to each other along line A and the first and second front platforms 56, 58 are also pivotally attached to each other along line B.
  • the rear platforms 52, 54 are pivotally connected to the front platforms 56, 58 along line C.
  • Lines A and B are preferably co-linear when the platform assembly is in a fully extended configuration.
  • Line C is preferably perpendicular to lines A and B.
  • the front and rear platforms 52, 54, 56, 58 collectively form the surface on which the wheelchair is placed during transport between the entry level and the ground level.
  • rear bridge plates 60 are connected to the platform assembly 50.
  • the bridge plates 60 are positioned in a vertical position with respect to the platform assembly 50 to create a rear barrier for preventing a wheelchair from rolling off the platform assembly.
  • the bridge plates 60 move into a horizontal position such that the bridge plates 60 are co-planar with the platform assembly 50 and the vehicle floor.
  • the bridge plates 60 provide a bridge from the platform assembly to the vehicle to ensure safe ingress and egress to the vehicle.
  • the lift 10 includes an automatic platform tilt mechanism 70 to accommodate the roll of the vehicle suspension.
  • the platform assembly tilts downward, away from the vehicle. Because the platform is no longer horizontal, a rider may feel that he or she is not in a safe position.
  • the lift 10 of the present invention preferably includes an automatic platform tilt mechanism to automatically adjust for the roll of the vehicle suspension.
  • FIG. 6 and 6A depict the platform tilt mechanism 70 when the wheelchair lift is at ground level in a tilted down position to facilitate the exit or entry of a wheelchair.
  • the piston and cylinder assembly 22 is in a fully retracted configuration.
  • the piston and cylinder assembly is preferably pivotally connected to a main platform actuator 72.
  • the main platform actuator 72 is pivotally connected to a first end 76 of a link platform actuator 74.
  • the second end 78 of the link platform actuator 74 is pivotally connected to a lift mechanism cam 80.
  • the lift mechanism cam 80 interacts with a cam follower 82.
  • the cam follower 82 is preferably attached to a first end 86 of the platform actuator bar 84.
  • the second end 88 of the platform actuator bar 84 is connected to the platform assembly 50.
  • the second end 88 of the platform actuator bar 84 is connected to the first front platform 56 at connection point 90.
  • Connection point 90 is preferably adjacent to line C (best shown in Figure 2) .
  • the linking arm 40 is also pivotally connected to the first front platform 56 at connection point 92.
  • Connection point 92 is preferably spaced apart from connection point 90 and is farther from line C than connection point 90.
  • the first end 76 of the link platform actuator 74 moves in the same direction as the piston and cylinder assembly.
  • the second end 78 moves in the opposite direction, causing the link mechanism cam 80 to rotate.
  • the link mechanism cam 80 exerts force on the cam follower 82, which causes the platform actuator bar 84 to move in a downward direction.
  • the platform actuator bar 84 exerts force on the first front platform 56 at connection point 90, causing the first and second front platforms 56, 58 to rotate about connection point 92.
  • the front end 94 of the platform assembly 50 tilts upward.
  • the platform tilt mechanism 70 is configured to tilt the platform assembly 50 to the extent that it accommodates for the roll of the vehicle suspension.
  • the platform tilt mechanism 70 of the present invention does not require a separate actuator system or control switch. It utilizes the same power actuating mechanism 20 that operates the lift from a stowed configuration to an entry level configuration, and to a ground level configuration.
  • the tilt mechanism 70 is simply an initial operation that is automatically performed upon lifting and landing.
  • the tilt mechanism 70 tilts the platform assembly as described and the main platform actuator 72 contacts the inner surface 46 of the linking arm 40. Thereafter, the main platform actuator 72 can not move any further, and as the piston and cylinder assembly 22 continues to expand, the tilting stops and the lifting of the linking arm 40 commences.
  • the wheelchair lift 10 of the present invention automatically sequences the lifting operation to commence upon completion of the tilting operation.
  • the sequencing occurs in reverse order, i.e., the landing operation commences first and when the platform assembly is at ground level, the tilting operation commences to ensure that the front end 94 of the platform assembly reaches the ground.
  • the piston and cylinder assembly 22 continues to retract, causing the first end 76 of the link platform actuator 74 to move in the direction R.
  • the link platform actuator 74 moves away from the inner surface 46 of the linking arm 40.
  • the second end 78 moves in the opposite direction E, causing the link mechanism cam 80 to rotate.
  • the wheelchair lift When the wheelchair lift is not in use, it is folded into a storage configuration and stored inside the vehicle. Because the platform assembly must fit vertically through the vehicle doorway, the length of the platform assembly has traditionally been limited by the height of the vehicle doorway. The height of a typical van doorway is about 47 inches. If the height of the van doorway is expanded (modified) , it is possible to fit a 52 inch platform assembly through the doorway. In a preferred embodiment of the present invention, due the manner in which the wheelchair lift folds, a longer platform assembly can fit through the vehicle doorway without requiring an expansion or other modification to the doorway.
  • connection point 90 is positioned adjacent line C, when the platform actuator bar 84 exerts force at connection point 90, the rear platforms 52, 54 begin to fold toward the front platforms 56, 58 as best shown in Figure 8.
  • the force exerted at connection point 90 also causes the front platforms 56, 58 to rotate about connection point 92.
  • the front and rear platforms 52, 54 continue to fold toward each other until the rear platforms 52, 54 are in a substantially parallel facing relationship with the front platforms 56, 58, as shown in Figure 9.
  • the folding operation of the present invention folds the platform assembly into quadrants.
  • the first fold is a crosswise fold, as described above.
  • the second fold is a lengthwise fold, shown best in Figures 10A-10C.
  • the platform assembly is folded into quadrants.
  • the wheelchair lift 10 preferably includes a fold actuator 110 to facilitate the second fold of the two-fold process.
  • the fold actuator 110 is preferably an electrical actuator, and more preferably, an actuator as described in U.S. Provisional Patent Application No. 60/386,338 filed June
  • fold actuator 110 is operatively connected with the power actuating mechanism 20 of the present invention. After the first fold of the two-fold process is completed, the fold actuator 110 is activated to exert force on the second side 104 of the platform assembly 50. By exerting force on the second side 104, the second side 104 begins pivot with respect to the first side 102 and to rotate about axis Z.
  • the second side 104 of the platform assembly 50 is wider than the first side 102.
  • the purpose of offsetting the pivot line on the platform assembly, and thus making the second side 104 wider than the first side 102 is to enhance the clearance of the vehicle doorway when the lift is in .a stowed configuration.
  • the second side 104 of the platform assembly 50 is completely cleared out of the vehicle doorway.
  • the second side 104 of the platform assembly 50 preferably extends behind the first side 102 at an angle, and more preferably, at about a 45 degree angle.
  • the width of the wheelchair lift is also minimized as the second side 104 of the wheelchair lift is cleared out of the doorway. Accordingly, most of the vehicle doorway is left clear.
  • the platforms are interconnected by pivotable connection devices. It is within the scope of the invention to use any type of connection device that allows the platforms to pivot with respect to each other.
  • hinges are used to pivotally connect the platforms to each other.
  • a first hinge 120 connects the rear platforms 52, 54 to the front platforms 56, 58 along line C;
  • a second hinge 122 connects the first rear platform 52 to the second rear platform 54 along line A;
  • a third hinge 200 connects the first front platform 56 to the second front platform 58.
  • the rear platforms 52, 54 are folded and in a facing relationship with the front platform 56, 58.
  • the second rear platform 54 and second front platform 58 must fold together.
  • the second rear platform 54 pivots with respect to the first rear platform 52 about line A
  • the second front platform 58 pivots with respect to the first front platform 56 about line B.
  • pivot line A must be aligned with pivot line B. If the pivot lines are not aligned, neither platform will be able to fold in the lengthwise direction.
  • connection device to connect the rear platforms 52, 54 to each other and the front platforms 56, 58 to each other, as long as the connection devices pivot about a common axis during the second fold of the two-step folding process.
  • the second hinge 122 when the platform assembly is folded in a lengthwise direction, the second hinge 122 is positioned inside the third hinge 200.
  • the pivot axis of the second hinge 122 must be aligned with the pivot axis of the third hinge 200.
  • the second hinge 122 is not vertically aligned with the third hinge 200. Rather, as shown in Figure 10B, the second hinge 122 lies inside the third hinge 200. Accordingly, the types of hinges used must be selected to ensure that the pivot axis of the second hinge 122 aligns with the pivot axis of the third hinge 200 when the platform assembly folds in the lengthwise direction .
  • the second hinge 122 is a piano hinge connected along line A and having a pivot axis along line A.
  • the third hinge 200 is connected along line B, however, does not have a pivot axis along line B, because as shown in Figure 10B, after the first (crosswise) fold of the two-fold process is completed, lines A and B are not co-linear. Therefore, to allow the platform assembly to fold again, this time in the lengthwise direction, the third hinge 200 must be a type of hinge that is connected along line B, however, when pivoted, pivots along an axis that is colinear with line A.
  • a preferred embodiment of the third hinge 200 is described in references to Figures 13 through 18. It is envisioned that any known connection device can be used that would allow the platforms to fold in the manner described above. As shown in Figure 13, the third hinge 200, although physically positioned along line B, has a pivot axis Z lying outside the hinge. This allows the pivot axis Z of the third hinge to be aligned with the pivot axis (line A) of the second hinge 122 to facilitate the lengthwise folding of the platform assembly.
  • the third hinge 200 includes a first block hinge 202 and a second block hinge 204.
  • the first and second block hinges 202, 204 are interconnected by a plurality of link members 206.
  • link members 206 For exemplary purposes, four link members 206 are shown.
  • Each link member 206 has a first end 208 pivotally connected to one of the block hinges 202, 204 and a second end 210 slidably connected to the other block hinges 202, 204.
  • the link members 206 are each pivotally connected to each other along line B.
  • each link member 206 has a first aperture 212 at its first end 208, a second aperture 214 at its second end 210, and a third aperture 216 at a common point 218.
  • first apertures 212 at the first end 208 of the link members 206 are aligned with corresponding apertures 220 on the block hinges 202, 204.
  • a pin 222 is inserted through the aligned apertures 212, 220 to pivotally connect the links 206 with the block hinges 202, 204.
  • Figures 15 and 16 depict the third hinge 200 in a contracted configuration.
  • the second ends 210 of the link members 206 are positioned at the outer ends 232 of the slots 224.
  • the third hinge expands (shown in Figure 13) the second ends 210 of the link members 206 move toward the inner ends 234 of the slots.
  • the second ends 210 of the link members 205 are positioned at the inner ends 234 of the slots.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Toys (AREA)
  • Air Bags (AREA)
  • Packaging Of Machine Parts And Wound Products (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)

Abstract

L'invention concerne un dispositif de levage pour fauteuil roulant configuré de manière à pouvoir être plié en quadrants grâce à un procédé de pliage en deux étapes. La première étape consiste à plier la pate-forme dans le sens de la largeur et la seconde étape consiste à plier la plate-forme dans le sens de la longueur. Afin de faciliter l'opération de pliage, la plate-forme comprend une première et une seconde plate-forme interne, ainsi qu'une première et une seconde plate-forme externe. Au cours de la première étape du procédé de pliage, la première et la seconde plate-forme interne se plient par rapport à la première et la seconde plate-forme externe. Au cours de la seconde étape du procédé de pliage, les secondes plates-formes internes et externes se plient par rapport aux premières plates-formes internes et externes.
PCT/US2003/017667 2002-06-06 2003-06-06 Dispositif de levage pour fauteuil roulant a bras unique WO2003104133A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003237389A AU2003237389A1 (en) 2002-06-06 2003-06-06 Single arm wheelchair lift

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38633902P 2002-06-06 2002-06-06
US60/386,339 2002-06-06

Publications (2)

Publication Number Publication Date
WO2003104133A2 true WO2003104133A2 (fr) 2003-12-18
WO2003104133A3 WO2003104133A3 (fr) 2004-03-18

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PCT/US2003/017667 WO2003104133A2 (fr) 2002-06-06 2003-06-06 Dispositif de levage pour fauteuil roulant a bras unique

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AU (1) AU2003237389A1 (fr)
WO (1) WO2003104133A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2165690A3 (fr) * 2008-09-22 2011-05-04 U-Lift AB Elévateur pour véhicules de transport de passagers
EP2631117A1 (fr) * 2012-02-27 2013-08-28 Ratcliff Palfinger Ltd Appareil de levage pour véhicule
JP2015023958A (ja) * 2013-07-25 2015-02-05 いすゞ自動車株式会社 車椅子乗降用スロープ板
US9101519B2 (en) 2013-02-07 2015-08-11 Dallas Smith Corporation Leveling ramp for a wheelchair
CN111823989A (zh) * 2020-06-24 2020-10-27 株洲九方装备股份有限公司 针对行动不便者上下车辆的辅助设备
FR3116842A1 (fr) * 2020-11-30 2022-06-03 Raoul Parienti Plateforme inclinable automatique pour l’accessibilité des personnes en fauteuil

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD299776S (en) * 1986-10-14 1989-02-07 Edward Canterberry Portable ramp
US5564884A (en) * 1994-01-06 1996-10-15 Farsai; Ali J. Wheelchair lift with automated folding platform
US6086314A (en) * 1997-08-15 2000-07-11 Ricon Corporation Foldable platform wheelchair lift
US6357992B1 (en) * 1994-12-22 2002-03-19 Braun Crow River, Inc. Collapsible, powered platform for lifting wheelchair
US6379102B1 (en) * 1998-05-29 2002-04-30 Ricon Corporation Wheelchair lift with foldable platform

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD299776S (en) * 1986-10-14 1989-02-07 Edward Canterberry Portable ramp
US5564884A (en) * 1994-01-06 1996-10-15 Farsai; Ali J. Wheelchair lift with automated folding platform
US6357992B1 (en) * 1994-12-22 2002-03-19 Braun Crow River, Inc. Collapsible, powered platform for lifting wheelchair
US6086314A (en) * 1997-08-15 2000-07-11 Ricon Corporation Foldable platform wheelchair lift
US6379102B1 (en) * 1998-05-29 2002-04-30 Ricon Corporation Wheelchair lift with foldable platform

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2165690A3 (fr) * 2008-09-22 2011-05-04 U-Lift AB Elévateur pour véhicules de transport de passagers
EP2631117A1 (fr) * 2012-02-27 2013-08-28 Ratcliff Palfinger Ltd Appareil de levage pour véhicule
US9101519B2 (en) 2013-02-07 2015-08-11 Dallas Smith Corporation Leveling ramp for a wheelchair
JP2015023958A (ja) * 2013-07-25 2015-02-05 いすゞ自動車株式会社 車椅子乗降用スロープ板
CN111823989A (zh) * 2020-06-24 2020-10-27 株洲九方装备股份有限公司 针对行动不便者上下车辆的辅助设备
FR3116842A1 (fr) * 2020-11-30 2022-06-03 Raoul Parienti Plateforme inclinable automatique pour l’accessibilité des personnes en fauteuil

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Publication number Publication date
AU2003237389A8 (en) 2003-12-22
WO2003104133A3 (fr) 2004-03-18
AU2003237389A1 (en) 2003-12-22

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