Brakes – Vehicle – Velocipede
Reexamination Certificate
2000-05-09
2001-09-18
Oberleitner, Robert J. (Department: 3613)
Brakes
Vehicle
Velocipede
C188S024140, C188S323000, C188S342000
Reexamination Certificate
active
06290028
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a bike brake, particularly to one having two stages of braking action, preventing danger possibly caused by instant braking to stop a bike abruptly.
Conventional bike brakes are generally using a brake line to pull brake bands in a brake drum to move outward to contact and rub against an inner wall of the brake drum to stop a wheel of a bike. However, an instant braking to stop a bike suddenly by users' customary action or an reaction to an unexpected condition may often happen, causing the wheel to slide forward, or falling down of a user or a bike. In automobiles there are a preventing system of sudden stop by instant braking, but in bikes this kind of system have not been disclosed yet so far. There are some patent documents such as U.S. Pat. No. 5,810,139, and Taiwan Patent of No. 89008 titled “Drum brake for bikes”. And that of No. 84229 titled “Bike drum brake” are all developed about a brake and the related components, but nothing about an art of preventing instant stopping of braking.
SUMMARY OF THE INVENTION
One purpose of the invention is to offer a bike brake with two stages of braking action to prevent danger caused by instant stop of a bike.
Another purpose of the invention is to offer a bike brake having a first stage of braking action in case of not urgent need.
One more purpose of the invention is to offer a bike brake (especially a front wheel brake) provided with a first stage of braking and a second stage of braking so as to make braking very safe whether in a normal or an urgent condition, preventing possible danger of instant stop of a bike.
REFERENCES:
patent: 762302 (1904-06-01), Gerstner
patent: 1575426 (1926-03-01), Harry
patent: 1908228 (1933-05-01), Dotson
patent: 1985406 (1934-12-01), Galkin
patent: 2685944 (1954-08-01), Faucher et al.
patent: 2858675 (1958-11-01), Schneider
patent: 5524734 (1996-06-01), Hanada
patent: 5673773 (1997-10-01), Lai
patent: 5988325 (1999-11-01), Matsueda
Oberleitner Robert J.
Pro-Techtor Inter-national Services
Williams Thomas J.
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