Machine element or mechanism – Control lever and linkage systems – Hand operated
Patent
1995-10-19
1997-08-26
Luong, Vinh T.
Machine element or mechanism
Control lever and linkage systems
Hand operated
74489, F16C 110, G05G 1100
Patent
active
056600828
ABSTRACT:
The brake lever system includes a cable attachment fitting which rides within an open slot of a brake lever body which tilts away from the departure point of the brake cable as a brake lever body is pivoted away from a brake lever housing. A threaded screw or rod carried within the open slot can be adjusted to raise or lower the height of a rectangular or other block which rides without turning within the open slot and which forms an adjustable lower limit below which the cable attachment fitting cannot travel. When activated, the cable attachment fitting moves in the direction of the point of pivot and the mechanical advantage is increased to the limit permitted by the metal block within the open slot. This produces a rapid closure of the brakes during the first extent of brake engagement, and a much less rapid closure as the brake lever body is displaced from the brake lever housing. The brake lever system of the present invention can be adjusted during the riding operation of the bicycle to adjust for brake pad wear and for changing conditions which might cause the brake cable to expand or contract.
REFERENCES:
patent: 4005613 (1977-02-01), Kaufman et al.
patent: 4611500 (1986-09-01), Nagano
patent: 4779482 (1988-10-01), Kawaguchi
patent: 4903799 (1990-02-01), Romano
patent: 5279179 (1994-01-01), Yoshigai
patent: 5287765 (1994-02-01), Scura
patent: 5515743 (1996-05-01), Lumpkin
patent: 5537891 (1996-07-01), Nagano et al.
Harrington Curtis L.
Luong Vinh T.
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