Wheel chair ratchet brake

Details Wheel chair ratchet brake Wheel chair ratchet brake

2000-09-05

2001-07-03

Swann, J. J. (Department: 3611)

Brakes

Vehicle

C280S250100

Reexamination Certificate

active

06253880

ABSTRACT:

BACKGROUND OF THE INVENTION
The “ratchet brake” is a mechanical device to be used on wheel chairs; it is a ratcheting gear attached to the end of a wheel chair brake. The purpose being so that when the brake of the chair is applied the user will then be assisted in going up hills and ramps. Without the ratchet brake much physical strength is needed to keep the chair from rolling backwards.
SUMMARY OF THE INVENTION
The “Ratchet Brake” when mounted on a wheel chair brake will allow only forward movement of the chair while the brake is applied. People with limited upper-body strength would then be able to negotiate ramps and hills with much greater ease.


REFERENCES:
patent: 4641847 (1987-02-01), Busse
patent: 4733755 (1988-03-01), Manning
patent: 4887830 (1989-12-01), Fought
patent: 4987978 (1991-01-01), Jungersen
patent: 5197750 (1993-03-01), DiGeorge
patent: 5211414 (1993-05-01), Galumbeck
patent: 5743544 (1998-04-01), Weaver
patent: 5845746 (1998-12-01), Henrickson
patent: 2110780 (1983-06-01), None
patent: 9815249 (1998-04-01), None

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