Self-propelling and steering attachment for a wheel-chair

Details Self-propelling and steering attachment for a wheel-chair Self-propelling and steering attachment for a wheel-chair

1980-02-25

1982-02-23

Peters, Jr., Joseph F.

Land vehicles

Wheeled

Occupant propelled type

280242WC, 280250, 297DIG4, B62M 114

Patent

active

043166164

ABSTRACT:
A self-propelling and steering attachment for a wheel-chair which can be installed and removed by the user while remaining seated in the wheel-chair and which comprises a sleeve, a steering post rotatably supported by the sleeve, a ground-engaging steering and propelling wheel carried by the lower end of the steering post, a crank mechanism carried by the top end of the steering post, a power transmission connecting the crank and the steering and propelling wheel, a framework which is quickly connectable to, and disconnectable from, the front frame portion of the wheel-chair, and a pair of superposed longitudinally-extending bars interconnecting the framework and the sleeve. The upper bar is rigid with the sleeve at one end and pivots relative to the framework at the other end. The lower bar is pivotally connected to the sleeve and to the framework and is extensible and retractable, being provided with a locking pin to lock this bar to a retracted, adjusted length. For installation of the attachment, the user first rigidly connects the framework to the wheel-chair front frame portion, while the locking pin is removed, then he pushes forwardly on the crank mechanism or on the upper portion of the steering post to cause the latter to attain a more upright position, therefore causing the front swivel wheels of the wheel-chair to raise off the ground. With this movement, the lower bar has retracted and the user then inserts the locking pin to lock the lower bar in retracted position.

REFERENCES:
patent: 2649309 (1953-08-01), Deissner
patent: 3485508 (1969-12-01), Hudnall
patent: 3485510 (1969-12-01), Merlan
patent: 3912032 (1975-10-01), Benz et al.
patent: 4108460 (1978-08-01), Silva, Jr.
patent: 4109927 (1978-08-01), Harper

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