Four-wheel drive wheelchair with compound wheels

Details Four-wheel drive wheelchair with compound wheels Four-wheel drive wheelchair with compound wheels

A - Human Necessities

61

G

155/14.2

A61G 5/04 (2006.01) B60B 19/12 (2006.01)

Patent

CA 1228007

Abstract of the Disclosure A four-wheel drive wheelchair is disclosed, the wheelchair includes a frame and seat for supporting a user in an upright position and a pair of rear wheels mounted on opposite sides of the frame for supporting the rear end thereof. Front compound-wheels are mounted on opposite sides of the frame for supporting the front end thereof with each of the wheels capable of rotating in a plane parallel to the side of the frame in a conventional manner and including castor wheels mounted around the perimeter thereof to permit the front end of the wheelchair to roll substantially freely from side to side in addition to forward and backward. Drive for the wheels is provided by sprocket and chain, with the front and rear wheels on each side interconnected to turn in unison and driven by differential control whereby the wheelchair may be steered differentially, by joystick control.

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