Wheel lock mechanism for a wheelchair

Details Wheel lock mechanism for a wheelchair Wheel lock mechanism for a wheelchair

1990-11-27

1992-12-29

Graham, Matthew C.

Brakes

Vehicle

188 74, 280 201, B60T 104

Patent

active

051744180

ABSTRACT:
A wheelchair wheel lock system is provided that can be adapted for either pull-to-lock or push-to-lock operation. The wheel lock system includes a function plate with first and second pivot holes. An operating lever is attached to the function plate, and rotation of the lever causes rotation of the function plate and thereby moves a contact arm into engagement with the wheel of the wheelchair to lock the wheel against movement. The operation of the wheel lock system is changed between push-to-lock and pull-to-lock by adapting the function plate to rotate about either the first pivot hole or the second pivot hole. The operating lever can be attached to the function plate in a variety of orientations, providing added flexibility in the operation of the wheel lock system.

REFERENCES:
patent: 4560049 (1985-12-01), Uchibaba et al.
patent: 4570756 (1986-02-01), Minnebraker et al.
patent: 4749064 (1988-06-01), Jinno et al.
patent: 4838387 (1989-06-01), Yoshigai
patent: 4887830 (1989-12-01), Fought et al.
patent: 4989890 (1991-02-01), Lockhard et al.
Copy of two photographs showing a prior art wheel lock mechanism prior to Nov. 1990.

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