EP0236600A1 - Hebevorrichtung für Rollstuhlfahrer an Haltestellen - Google Patents

Hebevorrichtung für Rollstuhlfahrer an Haltestellen Download PDF

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Publication number
EP0236600A1
EP0236600A1 EP86300989A EP86300989A EP0236600A1 EP 0236600 A1 EP0236600 A1 EP 0236600A1 EP 86300989 A EP86300989 A EP 86300989A EP 86300989 A EP86300989 A EP 86300989A EP 0236600 A1 EP0236600 A1 EP 0236600A1
Authority
EP
European Patent Office
Prior art keywords
lift car
bridge
lift
platform
upright
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Withdrawn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
EP86300989A
Other languages
English (en)
French (fr)
Inventor
Harold R. Williams
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.)
Lift U Inc
Original Assignee
Lift U Inc
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 to US06/571,903 priority Critical patent/US4576539A/en
Application filed by Lift U Inc filed Critical Lift U Inc
Priority to EP86300989A priority patent/EP0236600A1/de
Publication of EP0236600A1 publication Critical patent/EP0236600A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
    • B66F7/02—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms suspended from ropes, cables, or chains or screws and movable along pillars
    • 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
    • A61G3/063—Transfer using ramps, lifts or the like using lifts separate from the vehicle, e.g. fixed on the pavement

Definitions

  • This invention relates to an improved transit station lift apparatus by which wheelchair occupants and other disabled persons are given the means to enter and leave transit vehicles safely as regular passengers with minimum inconvenience and without undue time loss to the transit system.
  • the invention is herein illustratively described by reference to its presently preferred embodi­ment; however, it will be appreciated that certain modifications and changes therein may be made with respect to details without departing from the essential features involved.
  • a further object of this invention is to devise a relatively low-cost apparatus installed at the transit station or stop so as to serve all transit vehicles picking up and discharging passengers there including disabled passengers in wheelchairs.
  • a related object hereof is to provide apparatus of this nature occupying a minimum of ground space at the transit station or stop and readily operable by the vehicle operator or conductor with the vehicle stopped to receive or discharge such passengers.
  • a further and more specific object hereof is to devise such lift apparatus of relatively simple construction, essentially vandal-proof and pro­vided with a control system restrictively accessible only by authorized persons such as a bus driver or conductor.
  • a related purpose is to provide such apparatus with a control means conveniently operable from the vantage point of a transit vehicle entryway by a trained person such as a train conductor, thereby assuring that the most frail and most uncoordinated handicapped person in a wheelchair may safely and quickly board and leave the transit vehicle.
  • Still another object hereof is to devise a lift apparatus easily accessed from either end and serving also as a safety enclosure available to the wheelchair occupant while waiting for arrival of the next train or bus vehicle and while being transferred between transit station platform and vehicle passenger deck.
  • a related objective is to provide in such a lift apparatus an elevator system in which a normally retracted bridge, extendable to the vehicle passenger deck from the lift car platform, may be made of minimum projecting length deployed as a bridge so as to minimize the structural requirements of the bridge and the length of open span the wheelchair passenger must traverse in moving between lift car and transit vehicle deck.
  • the wheelchair lift apparatus comprises a lift car normally in lowered position with its platform boarding ramp at one end extended to the ground so as to accommodate a wheelchair passenger desiring to enter or leave.
  • a bridge at the opposite end of the lift car is normally in upraised retracted position extending transversely between opposite side walls of the car so as to form therewith three sides of a protective enclosure.
  • the bridge is first raised, the lift car lowered to ground level, and the boarding ramp then extended from the lift car platform.
  • both the lift car boarding ramp and bridge are mounted for extension and retraction by hinging action employing side-mounted hydraulic jacks accommodated between dual panels of the lift car sidewalls.
  • a cover or cowl over the jack operating the bridge telescopes into the lower corner portion of the lift car side wall.
  • a lift car elevator system with sloping guide tracks which advance the lift car horizontally toward the transit vehicle entryway as the lift car is being raised to passenger vehicle deck level position.
  • Sliders supporting the lift car engage the sloping guide tracks in an arrangement also stabilizing and steadying the lift car in its movements up and down along the guide tracks.
  • traveling sprockets carried by the sliders and commonly driven in rotation by interconnected lift car support shafts engage and run on stationary sprocket chains.
  • Such chains held stretched along the inclined guide tracks, engage two mutually adjacent sprockets on each slider in a double reversal of the chains as a means of providing a quietly smooth lift car device.
  • the lift apparatus for wheelchair passengers is depicted for use on a train station platform P.
  • the train is shown in the view by depicting its wheels W riding on tracks R extending parallel to the curb edge of the platform P and by its passenger steps S open in its open entryway leading upwardly to the passenger deck D.
  • the lift apparatus A is mounted adjacent to the edge of platform P oriented endwise toward the tracks. The widths of the entryways in most existing trains and other transit vehicles are already sufficient or can be made sufficient to accommodate a wheelchair moved through the entryway.
  • the lift apparatus bridge 10 which must be traversed by the wheelchair passenger in boarding and leaving the train, is made only a little wider than a wheelchair and is therefore extendable into the entryway with the lift car in its elevated passenger transfer position as depicted in FIGURE 3.
  • the span length of bridge 10 is, of course, made sufficient to extend to the passenger deck D from the adjacent end of the lift platform 14 of lift car 12 with the lift car elevated.
  • the lift car bridge 10 and ramp 16 serve as end walls, and extend between opposite side walls 18 and 20 of the lift car (FIGURE 6) to protectively surround the wheelchair occupant during raising and lowering of the lift car.
  • Optional details, such as handrails 21 (FIGURE 4) extending along the upper edges of the side walls 18 and 20 and other functional or aesthetic features may be employed suiting the engineering, appearance, and safety standards of the manufacturer and/or user.
  • Lift car 12 is mounted and guided to be raised and lowered by and between transversely spaced parallel upright frame wall structures 22 and 24, each with a pair of parallel lift car guide tracks 26 (FIGURE 6).
  • Lift car support sliders 28 (FIGURE 8) slidably engaging these tracks are themselves supported and driven in unison so as to maintain the lift platform always level as it is raised and lowered.
  • Such guide tracks are inclined in parallel toward the train right-of-way at a substantial acute angle such as 75° relative to the station platform P.
  • a short span simplifies and economizes in the bridge structure needed to support load, and it also permits the train entryway to provide safe side and overhead shelter for the wheelchair passenger during crossing of the short bridge span.
  • Lift car 12 in more specific detail, comprises a hollow bottom structure with spaced top and bottom panels forming the lift platform 14.
  • Upright side walls 18 and 20 are appropriately joined with cantilever structural rigidity to opposite side edges of platform 14.
  • Such side walls are of dual-panel hollow construction, as are those of the apparatus support walls to be described, so as to accommodate functional components of the lift car such as hydraulic hoses, fittings, solenoid valves, motor switches and related components. These physical arrangements within the side walls are not important and may vary.
  • bridge 10 is preferably of hollow dual-panel construction with a beveled free end 10a and with side rails 10b. Hingedly mounted onto the end of the lift car by hinge fittings 30, the bridge is movable between extended or lowered position in which its then upper surface is substantially flush with the upper surface of the lift platform 14, and an upraised or retracted position in which its then outer or endwise facing surface is substantially flush with the end panels of the lift car sides.
  • One such end panel 18a is shown in FIGURE 12.
  • hydraulic cylinder jack 32 housed between the inner and outer panels 18b and 18c of lift car side wall 18, is pivotally mounted at one end on a fitting 34 fixed to the interior base of wall 18.
  • a pivot pin 36 mounted within a cowl or cover 38 at the base of bridge 10.
  • the cover 38 adjoins the outer side of bridge rail 10b and serves to minimize the open corner space which the extended piston rod of jack cylinder 32 encloses with the bridge extended.
  • a notch or a slot in the transverse end plate 18a of side wall 18 telescopingly accommodates the cowl 38 when the bridge is retracted by contraction of the hydraulic cylinder jack 32.
  • the end edge of the inner wall 18b is provided with an elongated pressure sensitive edge switch 40 having switch elements (not shown) connected in the control system of the apparatus.
  • This switch constitutes a safety device of a well known type to arrest retraction of the bridge in the event a person or other obstacle is interposed between the retracting bridge and the end of car lift 18.
  • a similar pressure switch is provided at the corresponding inner edge of the opposite wall 20.
  • Such edges are preferably set back inclined from the end plane of the side walls 18 and 20 so as to receive the tapered bridge retracted into a nested position between the outside panels of side walls 18 and 20 (FIGURE 13).
  • side wall end panel 18a and the corresponding end panel of the opposing side wall 20
  • have a narrow vertical slot 18e which accommodates the plate-like bridge side rails 10b in the upraised position of the bridge.
  • ramp 16 is of dual panel hollow wedge-shaped cross section with its uppermost panel terminating at its butt end substantially flush with the floor surface of lift platform 14 with the ramp in its lowered or extended position.
  • Hinged on a set of fittings 50 fixed to the bottoms of the lift car sides 18 and 20, the ramp 16 in raised or retracted position (FIGURE 5, for example) provides a low end gate or closure for the lift car.
  • Hydraulic cylinder jack 52 coupled by its base to the slightly elevated fixed base support 54, is pivotally connected by its opposite end to the lug 56 upstanding from the base end of the ramp.
  • the hydraulic cylinder jack 52 is protectively housed within the hollow interior of one of the lift car side walls, in this instance the side wall 20.
  • a hollow cowling or cover 16a encloses the portion of the hydraulic cylinder jack that protrudes from the car side wall 20 and is tele­scopingly received in the hollow of the side wall as the ramp is retracted.
  • FIGURES 5 through 9 The principal elements of elevator mechanism for raising and lowering the lift car are depicted in FIGURES 5 through 9.
  • Each slider is positionally stabilized relative to the car by positioning bars (not shown) which make the sliders rigidly integral with the car so that they are held against rocking or shifting relative to the car platform.
  • Each such slider comprises parallel plates of a synthetic plastic material such as polyethylene or polytetrafluorethylene (“TEFLON”) which may, but need not, be joined together by one or more blocks 28c spacing the plates apart to accom­modate between them two chain sprockets 60 and 62 and the stretches of a sprocket chain 64 with which the respective sprockets are in running engage­ment.
  • the chain is stretched under tension extending generally lengthwise along opposite interior flange faces of the guide channel 26.
  • the upper end of the chain is anchored by a fitting 66 to the upper end of the channel flange nearest the lift car bridge.
  • the opposite end of the chain is similarly anchored by a fitting 68 to the lower end of the opposite flange.
  • Sprocket 60 is rotatively journaled on shaft 60a extending through slider panels 28a and 28b.
  • Sprocket 62 is likewise rotatively journaled on and is keyed to shaft 62a as a drive shaft passing through slider panels 28a and 28b.
  • the substantial incline or slope of the respective guide tracks 26 causes the sliding bearing load contact imposed by the lift car on the respective sliders to be continuously borne by the inside faces of the channel flanges nearest the lift car ramp 10. It will be appreciated that this offers still another and special advantage of the sloping guide tracks, namely, essentially stable "rattle-free" motion of the lift car.
  • shaft 62a is shown projecting through a gear housing 70 in which rotation of a drive shaft 72 by hydraulic motor 74 is converted into rotation of shaft 62a at right angles to shaft 72 through gearing (not shown) such as worm and wheel drive gearing, which is not reversible except when driven.
  • gearing such as worm and wheel drive gearing, which is not reversible except when driven.
  • a second transmission gear unit 76 driven by shaft 72 converts rotation of the latter into rotation of shaft 78a.
  • shaft 78a Keyed to elevator drive sprocket 78, shaft 78a is parallel to shaft 62a and terminates in a drive sprocket 78b in running engagement with a chain similar to chain 64 (FIGURE 8).
  • shaft 62a terminates in a drive sprocket 62b to which it is keyed and which likewise engages a stretched chain similar to chain 64.
  • a shock absorption coupling 80 is interposed between hydraulic drive motor 74 and the primary transmission drive gear unit 70, and a similar coupling 82 is likewise interposed between the output of such unit 70 and transfer shaft 72.
  • shafts 62a and 78a are driven synchronously by the same mechanical drive power source (70) and the four corners of the lift car platform 14 are thereby maintained at the same height level above station platform P as the lift car is being raised and lowered between its terminal positions.
  • While other forms of elevator mechanisms may be employed, including other forms of chain and sprocket elevator mechanisms, that disclosed is preferred in its low-cost simplicity of construction, ready accessibility for maintenance and repairs and particularly in the quiet smoothness of starting and stopping of the lift car from the shock take-up action of the chains in their double reverse paths of encirclement around the adjacent sprocket.
  • the apparatus base carrying the four inclined guide tracks 26 comprises two parallel wall structures of hollow dual panel construction, also providing protective enclosure for various control and operating system com­ponents employed in the system.
  • Such base wall structures comprise upper horizontally disposed box beams 90 supported above bottom horizontal box beams 92 by the inclined guide rails and also by the diagonally but oppositely inclined brace members 94. Additional structural members 96 and 98 parallel to the guide tracks 26 add stiffness and strength.
  • the box beams 92 are bolted or otherwise rigidly secured to the station platform P at a distance separated sufficiently to accommodate the lift car and its associated drive mechanism (74, 70, 72, 76, etc.) between such base wall structures.
  • a control tower 100 Adjacent to the lift apparatus is a control tower 100 comprising an upright post mounted adjacent the edge of the station platform P and carrying a control head 102 with a normally covered access socket 104 at its upper end.
  • this control head 102 will be positioned about seven feet above the platform P so that the train operator or person who is to operate the lift apparatus from within the entryway of the train stopped in registry with the lift apparatus may reach out with a plug fitting 106 (FIGURE 5) to connect the control head 102 to the control panel 108 in the passenger entryway of the train.
  • Other means such as radio or infrared control links may be used to permit operation of the apparatus from the transit vehicle.
  • FIGURE 14 depicts the operational system preferably employed in practicing the invention in its preferred functional or sequencing mode.
  • the system includes an electrical switch or equivalent means 110 operable from the control head by a manually or automatically initiated control signal to start the operation of a device 112 for retracting the ramp 16.
  • the ramp 16 is retracted by the hydraulic cylinder jack 52.
  • Means 114 senses the point at which the retracting ramp reaches a retracted position and preferably in such response actuates a ramp latch to hold the ramp in elevated or retracted position.
  • the unit 114 transmits a starting signal to the lift elevator drive energizing the hydraulic motor 74 to start raising the lift car substantially to passenger vehicle deck level.
  • a response by unit 116 stops the elevator drive and at the same time actuates a means 118 for releasing a bridge latch (not shown) and initiating operation of a bridge actuator 120 to lower or extend the bridge.
  • Descent of the bridge to its extended or lowered position is limited by its firm contact with vehicle deck D. This point is sensed by a means 122, to terminate operation of the bridge extender 120. If an obstruction prevents the bridge from reaching that lowered position, such as may occur if the passenger entryway of the train is not in correct registry with the lift apparatus, a unit 124 immediately terminates operation of the bridge extender mechanism 120 so as to avoid damage to equipment or injury to people. Preferably unit 124 is one and the same with unit 122.
  • An overtravel sensor 121 in the form of a mercury switch mounted in the bridge responds to lowering of the bridge to an allowable limit such as 5 degrees below the horizontal to also terminate operation of mechanism 120.
  • the retraction or return cycle of the lift apparatus is similarly initiated from the control head 102, in this instance by transmitting a cycle start signal to the means 126 which first initiates operation of the means 128 for retracting the bridge.
  • this means comprises the hydraulic cylinder jack 32.
  • Full retraction of the bridge sensed by the unit 130 actuates a bridge latch (not shown) to transmit a retraction stop signal to the retraction means 128. If an obstruction prevents the bridge from reaching its retracted position, either a unit 129 or one of the edge switches such as switch 40 immediately terminates operation of the retraction means 128.
  • unit 130 Upon full retraction of the bridge, unit 130 starts operation of the elevator drive 74 to lower the lift car.
  • Suitable means 132 senses arrival of the lift car at its lowered or platform level position and terminates the elevator drive operation. At the same time, it actuates the ramp latch release 134 and initiates operation of the ramp extension mechanism 136 (jack 52). A position sensor means 138 senses ramp extension and stops the operation of the ramp extender jack. The wheelchair lift car 12 and its entry ramp 16 are then in readiness to discharge or to receive a passenger. As previously indicated, bridge 10 has meanwhile been latched in its retracted or raised position and it remains there until the lift car is once again raised to train deck level.
  • FIGURE 15 illustrates schematically the means controlling ramp operation.
  • the base end of hydraulic cylinder jack 52 has a pin 52a which is free to slide within an elongated slot in a bracket 52b secured to the base plate of platform 14 and within an elongated slot at one end of a link 52c whose other end is coupled by a pivotal mount 52d to a latch arm 52c that is pivotally mounted on the base plate of platform 14.
  • a first extension spring 52f couples the upper end of latch arm 52e to side wall 20 and urges latch arm 52c toward hydraulic cylinder 52.
  • a second extension spring 52g couples a portion of ramp 16 to side wall 20 and acts to restrain lowering of the ramp.
  • Limit switch 52c ⁇ on latch arm 52e serves to indicate, by whether its contacts are open or closed, that the ramp is either in its raised position and latched or it is not (the latter condition enabling the system to raise the ramp).
  • hydraulic pressure fluid is delivered from a system pressure source through line 32a (FIGURE 16) to the hydraulic cylinder jack 32 to extend the jack, such fluid passing through a flow restrictor 32b.
  • the latter serves to provide a predetermined pressure differential thereacross when fluid is flowing through line 32a to extend the bridge 10.
  • the resulting termination of fluid flow through line 32a causes the pressure differential across flow restrictor 32b to abruptly decrease so that the pressure at the lower side of flow restrictor 32b rises.
  • This pressure rise is sensed by a hydraulic pressure switch 32c that performs the function of the unit 122 in FIGURE 14.
  • the invention provides a safe and practical, efficient apparatus by which wheelchair passengers and other disabled persons are enabled to use public transit facilities without undue interruption of transit schedules and even without regard to the capability of such persons to safely operate control mechanisms.
  • the apparatus encourages wheelchair passengers to take a ready position in the lift car ready for boarding the train the instant it arrives at the station, and the lift apparatus can be accessed for operation by the train attendant. This it does by protecting the individual while in the lift car awaiting the arrival of the train, such as against the possibility of flying rocks or other debris, windrush, and the normal apprehensions that must occur to a disabled person in the close presence of such commotion.
  • the apparatus is furthermore designed in such a way that severance of the connection to the control tower head 102 is disabling of all operating functions of the system such that children and vandals may not play with the apparatus when left unattended.
  • the system may also be provided with added sensing apparatus positively holding the train braked or locked in standing position until the bridge 10 is retracted fully clear of the train entryway. Implementing this protection factor may be readily accomplished using any of existing state-of-art position detectors and train brake or drive controls responsive to the same so that the train control panel 108 held linked to the control head 106.

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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)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Types And Forms Of Lifts (AREA)
EP86300989A 1984-01-17 1986-02-13 Hebevorrichtung für Rollstuhlfahrer an Haltestellen Withdrawn EP0236600A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US06/571,903 US4576539A (en) 1984-01-17 1984-01-17 Wheelchair passenger lift apparatus for transit stations
EP86300989A EP0236600A1 (de) 1986-02-13 1986-02-13 Hebevorrichtung für Rollstuhlfahrer an Haltestellen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86300989A EP0236600A1 (de) 1986-02-13 1986-02-13 Hebevorrichtung für Rollstuhlfahrer an Haltestellen

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EP0236600A1 true EP0236600A1 (de) 1987-09-16

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EP86300989A Withdrawn EP0236600A1 (de) 1984-01-17 1986-02-13 Hebevorrichtung für Rollstuhlfahrer an Haltestellen

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992014431A2 (en) * 1991-02-21 1992-09-03 Hogan Mfg., Inc. Wheelchair lift for transit vehicles having elevated passenger compartment floor
DE4342543A1 (de) * 1993-12-14 1995-06-22 Ammendorf Waggonbau Steuersystem zur Erhöhung der Sicherheit eines mit Behindertenlift ausgerüsteten Fahrzeuges, insbesodere Schienenfahrzeuges
USRE36805E (en) * 1991-05-15 2000-08-01 Lift-U, Division Of Hogan Mfg., Inc. Wheelchair lift with linkage assembly and hinged connection joint
EP1148019A2 (de) * 2000-04-17 2001-10-24 VIMEC S.p.A. Treppenaufzug für Invaliden
CN109106117A (zh) * 2017-06-26 2019-01-01 城绍科技股份有限公司 能快速拆解组立及调整宽度的移位辅助椅

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3229788A (en) * 1963-06-25 1966-01-18 Welded Products Inc Invalid elevator
BE779969A (fr) * 1972-02-29 1972-06-16 R Weisshaupt A G Maschf Lasthubvorrichtung, insbesondere fur hebebuhnen.
US3737009A (en) * 1971-11-01 1973-06-05 J Stoddard Wheel chair lift
CA1012076A (en) * 1976-09-07 1977-06-14 Tebor Mitro Elevating device for wheel chairs and the like
US4063619A (en) * 1976-11-08 1977-12-20 Drews Robert E Elevator platform structure
GB2055344A (en) * 1979-07-10 1981-03-04 Univ Goeteborg Vehicle entry aid
EP0047574A1 (de) * 1980-09-05 1982-03-17 Abex Corporation Aufzug für Fahrstuhl
US4438830A (en) * 1979-06-25 1984-03-27 Born Raymond W Stairway with fail safe power lift for lading, the infirm, wheelchair patients, and the like
EP0121348A1 (de) * 1983-03-08 1984-10-10 Alpha Lifts Limited Aufzug
US4576539A (en) * 1984-01-17 1986-03-18 Lift-U-Inc. Wheelchair passenger lift apparatus for transit stations

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3229788A (en) * 1963-06-25 1966-01-18 Welded Products Inc Invalid elevator
US3737009A (en) * 1971-11-01 1973-06-05 J Stoddard Wheel chair lift
BE779969A (fr) * 1972-02-29 1972-06-16 R Weisshaupt A G Maschf Lasthubvorrichtung, insbesondere fur hebebuhnen.
CA1012076A (en) * 1976-09-07 1977-06-14 Tebor Mitro Elevating device for wheel chairs and the like
US4063619A (en) * 1976-11-08 1977-12-20 Drews Robert E Elevator platform structure
US4438830A (en) * 1979-06-25 1984-03-27 Born Raymond W Stairway with fail safe power lift for lading, the infirm, wheelchair patients, and the like
GB2055344A (en) * 1979-07-10 1981-03-04 Univ Goeteborg Vehicle entry aid
EP0047574A1 (de) * 1980-09-05 1982-03-17 Abex Corporation Aufzug für Fahrstuhl
EP0121348A1 (de) * 1983-03-08 1984-10-10 Alpha Lifts Limited Aufzug
US4576539A (en) * 1984-01-17 1986-03-18 Lift-U-Inc. Wheelchair passenger lift apparatus for transit stations

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992014431A2 (en) * 1991-02-21 1992-09-03 Hogan Mfg., Inc. Wheelchair lift for transit vehicles having elevated passenger compartment floor
WO1992014431A3 (en) * 1991-02-21 1992-11-12 Hogan Mfg Inc Wheelchair lift for transit vehicles having elevated passenger compartment floor
USRE36805E (en) * 1991-05-15 2000-08-01 Lift-U, Division Of Hogan Mfg., Inc. Wheelchair lift with linkage assembly and hinged connection joint
DE4342543A1 (de) * 1993-12-14 1995-06-22 Ammendorf Waggonbau Steuersystem zur Erhöhung der Sicherheit eines mit Behindertenlift ausgerüsteten Fahrzeuges, insbesodere Schienenfahrzeuges
EP1148019A2 (de) * 2000-04-17 2001-10-24 VIMEC S.p.A. Treppenaufzug für Invaliden
EP1148019A3 (de) * 2000-04-17 2002-06-12 VIMEC S.p.A. Treppenaufzug für Invaliden
CN109106117A (zh) * 2017-06-26 2019-01-01 城绍科技股份有限公司 能快速拆解组立及调整宽度的移位辅助椅
CN109106117B (zh) * 2017-06-26 2021-10-26 城绍科技股份有限公司 能快速拆解组立及调整宽度的移位辅助椅

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