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US 5,308,098 AGranted
Self-propelled all terrain wheelchair
OwnerBrian J. Sheainventor
Life of this patent
Estimating the term…
Abstract
A wheelchair adapted for use both on smooth surfaces and uneven or rough ground wherein a cleated belt is trained around a plurality of wheels on both sides of the chair and is driven by a spring-loaded handgrip engaging therewith. Means are provided for tensioning the belt and for locking the hand grip in engagement with such belt.
Claims6
A self-propelled all terrain wheelchair comprising:
- a frame including a back portion and a seat;
- four axles mounted rotatably on said frame in a spaced relationship to one another;
- wheels rotatably mounted on each of said axles, said wheels having belt engaging means thereon;
- a cleated belt having a plurality of lugs thereon, said cleated belt extending around all four wheels and being in engagement with the belt engaging means thereof;
- and,
- a slidable hand grip slidably mounted on said frame and engagable with said belt to move said belt relative to said wheels.
3 more elements
Dependencies are inferred from the claim text.