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 Title: |
US4556229:
Stair-climbing apparatus for wheelchair
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Bihler, Franz; Augsburg, Germany
Abele, Anton; Augsburg, Germany
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| Assignee: |
Kleindienst GmbH, Augsburg, Germany
other patents from KLEINDIENST GMBH & CO. (315575) (approx. 6)
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| Published / Filed: |
1985-12-03
/ 1983-07-07
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| Application Number: |
US1983000511791
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| IPC Code: |
Advanced:
A61G 5/06;
B62B 5/02;
B62D 55/075;
IPC-7:
A61G 5/00;
B62B 5/02;
B62B 9/02;
B62D 55/00;
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| ECLA Code: |
A61G5/06A; A61G5/06C; B62B5/02; B62D55/075; L62B301/25E;
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| U.S. Class: |
Current:
280/005.22;
180/008.2;
180/907;
280/304.1;
280/DIG.010;
410/007;
Original:
280/005.22;
180/008.2;
180/907;
280/289.WC;
280/DIG.10;
410/007;
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| Field of Search: |
280/5.22,5.2,289 WC,242 WC,DIG. 10
297/DIG. 4
410/003-10
180/8.2,9.2 R,907
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| Priority Number: |
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| Abstract: |
An apparatus for moving a wheelchair on a flight of steps has a support adapted to engage underneath the wheelchair in an upright condition of same with the chair pivotal on the support between erect and inclined positions. Two or more endless tracks on the support carry same and the wheelchair thereon so that the tracks allow the wheelchair to move over uneven terrain and up and down stairs. A latch is displaceable on the support between a holding position securing the wheelchair in the inclined position and a freeing position permitting the wheelchair to move freely between its positions. A safety device connected to the latch is responsive to the inclination of the tracks relative to the horizontal for blocking the latch from moving into the freeing position when the tracks are inclined at more than a predetermined angle to the horizontal. Thus the wheelchair cannot be released from the support when same is moving on an incline. The latch is provided with a pedal to displace it into the freeing position. The support includes a frame element pivotal on the support about a horizontal axis transverse to the tracks and a device for securing the frame element to the wheelchair on the support.
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| Attorney, Agent or Firm: |
Ross, Karl F. ;
Dubno, Herbert ;
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| Primary / Asst. Examiners: |
Peters, Jr., Joseph F.; Hill, Mitchell J.
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| Maintenance Status: |
E2 Expired Check current status
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| INPADOC Legal Status: |
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Family Legal Status Report
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| Family: |
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First Claim:
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We claim:
1. An apparatus for moving a wheelchair on a flight of steps, the apparatus comprising:
- a support adapted to engage underneath the wheelchair in an upright condition of same, the wheelchair being pivotal on the support between erect and inclined positions;
- two endless tracks on the support and supporting same and the wheelchair carried thereon, whereby the tracks allow the wheelchair to move over uneven terrain and on stairs;
- latch means on the support including a latch element displaceable between a holding position for securing the wheelchair in the inclined position and a freeing position for permitting the wheelchair to move freely between its positions; and
- means connected to the latch element, responsive to the inclination of the tracks relative to the horizontal, and having a retaining dog movable into a position directly juxtaposed with the latch element for rotationally blocking the latch element from moving into the freeing position when the forward end of the tracks are inclined downwardly at more than a predetermined angle to the horizontal, whereby the wheelchair cannot be released from the support when same is moving on an incline.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 32 U.S. patent(s) that reference this one
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