Powered invalid-chairs

Details Powered invalid-chairs Powered invalid-chairs

1975-07-24

1977-07-26

Peters, Jr., Joseph F.

Motor vehicles

Steering by driving

Independently operable drive motors

180DIG3, B62D 1104

Patent

active

040376761

ABSTRACT:
A wheelchair for an invalid has two large ground wheels and two castor wheels, each ground wheel being driven by a small electric motor through a drive arrangement in which a driving pulley swings towards a driven surface on the wheel and drives itself into engagement with the driving surface. First control means for the motors and the pulleys are provided for operation by an attendant, and second control means are provided for operation by the invalid. One of the castor wheels is lockable in a straight-ahead position to improve the dirigibility of the wheel chair.

REFERENCES:
patent: 2798565 (1957-07-01), Rosenthal
patent: 3064744 (1962-11-01), Jennings
patent: 3376944 (1968-04-01), Lotz
patent: 3786887 (1974-01-01), Rosenthal
patent: 3878910 (1975-04-01), Walker

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