Wheelchair

Details Wheelchair Wheelchair

1975-04-14

1977-08-30

Goodman, Philip

Motor vehicles

Special driving device

Portable track

280242WC, 280 522, B62D 5504

Patent

active

040448509

ABSTRACT:
A wheelchair with relatively large diameter wheels on each side of the chair frame and two smaller wheels in front carries one or more continuous traction belts beneath the seat and/or the back of the chair in retracted position when the chair is used on a flat surface. The large wheels are each attached to the frame by a lever controlled mechanism manipulated by the operator to raise the large wheels, lowering the seat and tilting the chair backward so that the chair rides on the continuous traction belts. This action is taken at a steep incline or at steps to place the operator in a safe, comfortable position with lowered center of gravity for ascending or descending the steps. Means such as an electric motor is provided for driving the traction belts to carry the operator safely up or down the incline or steps.

REFERENCES:
patent: 3191953 (1965-06-01), Aysta
patent: 3231290 (1966-01-01), Weyer
patent: 3292722 (1966-12-01), Bamberg
patent: 3529688 (1970-09-01), Bruce

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