Machine element or mechanism – Control lever and linkage systems – Hand operated
Reexamination Certificate
1999-09-03
2001-02-27
Green, MaryAnn (Department: 3682)
Machine element or mechanism
Control lever and linkage systems
Hand operated
C074S489000
Reexamination Certificate
active
06192772
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a controller for a rolling walkkit, particularly to one having a simple structure to be operated easily and hardly getting out of order.
Nowadays, rolling walkkits, wheel chairs are widely used by the disabled, having a brake to keep them safe in moving. However, conventional brakes used in them are often found to be complicated not easy to be assembled together. In addition, their operation is not stable owing to the components liable to separate from each other or position not securely.
SUMMARY OF THE INVENTION
This invention has been devised to offer a controller for the brake of a rolling walkkit or a wheel chair, having a structure of few components but easily to handle and hardly getting our of order.
The feature of the invention is a controller base, a grip and a control rod combined together to pull forward a brake wire for stopping the wheels of the rolling walkkit in two kinds of modes, one for braking temporarily by pushing up the grip and the other for a long time by pressing down the grip. And releasing the grip frees the brake to let the wheels of the rolling walkkit move again.
REFERENCES:
patent: 5279180 (1994-01-01), Henriksson
patent: 5865065 (1999-02-01), Chiu
patent: 5896779 (1999-04-01), Biersteker et al.
patent: 6032765 (2000-03-01), Hsi-Chia
patent: 6079290 (2000-06-01), Li
patent: 6098487 (2000-08-01), Chien
Green Maryann
Pro-Techtor Inter-national Services
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