Stair-climbing wheelchair carrier with crawlers
First Claim
1. A crawler unit for coupling to a wheelchair and having a pair of power-driven tracks to be fitted between main wheels of the wheelchair, comprising:
- a frame mounting said power-driven tracks;
an adapter for securing the wheelchair relative to said frame, said adapted including a coupling member for slidably mating with a complimentary coupling member on a wheelchair;
means mounting said adapter to said frame and permitting relative movement between said adapter and said frame;
lifting means connected to said frame and said adapter, andactuating means connected to said lifting means for selective operation of said lifting means by an occupant of a wheelchair secured by said adapter to permit said occupant to selectively lift the wheelchair and adapter relative to said frame and to lift the frame and power-driven tracks relative to the wheelchair and adapter.
1 Assignment
0 Petitions
Accused Products
Abstract
A crawler unit for coupling to a wheelchair, especially for climbing stairs, comprises an undercarriage having power-driven tracks and an adapter for securing the wheelchair in a rearwardly tilted travelling position. In order to enable the wheelchair user to couple and decouple and maneuver the wheelchair by himself, the adapter which includes a male coupling member for mating engagement with a complementary female coupling member mounted on the wheelchair is connected to the crawler unit through lifting means adapted to be operated by the wheelchair user via actuating or control elements for selectively lifting the wheelchair relative to the crawler unit and lifting the crawler unit while the wheels of the wheelchair remain on the ground, such operation being possible both in position of the wheelchair.
88 Citations
23 Claims
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1. A crawler unit for coupling to a wheelchair and having a pair of power-driven tracks to be fitted between main wheels of the wheelchair, comprising:
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a frame mounting said power-driven tracks; an adapter for securing the wheelchair relative to said frame, said adapted including a coupling member for slidably mating with a complimentary coupling member on a wheelchair; means mounting said adapter to said frame and permitting relative movement between said adapter and said frame; lifting means connected to said frame and said adapter, and actuating means connected to said lifting means for selective operation of said lifting means by an occupant of a wheelchair secured by said adapter to permit said occupant to selectively lift the wheelchair and adapter relative to said frame and to lift the frame and power-driven tracks relative to the wheelchair and adapter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification