Hydraulic brake system

Details Hydraulic brake system Hydraulic brake system

1996-01-26

1997-10-21

Oberleitner, Robert J.

Brakes

Operators

Fluid pressure

188198M, 745024, B60T 1100

Patent

active

056786654

ABSTRACT:
Hydraulic systems for bicycles or other small land vehicles include a master or control cylinder actuated by the brake lever, and a slave cylinder connected to the master cylinder by a hydraulic fluid line. The slave cylinder carries a piston, and the slave cylinder or piston is connected to the callipers for applying the brakes. With repeated use, the lever becomes loose or develops play. A solution to the problem provided by this invention incudes an adjustment screw in the slave cylinder for quickly and easily adjusting the position of the piston in the slave cylinder, so that in the rest position, the fluid pressure on the lever maintains the latter in a fixed position. An eccentric cam can also be mounted on the lever for adjusting the rest position of the lever with respect to a piston in the master cylinder to achieve the same effect. Another, advantage of the brake system described herein is the use of co-axial pistons in the master cylinder, so that a gentle force is initially applied to the callipers to move the pads gently into position against the rim, and, with the pads in position against the rim, a higher force is applied to effect a braking action.

REFERENCES:
patent: 3327913 (1967-06-01), Harrah
patent: 3554334 (1971-01-01), Shimano
patent: 3935930 (1976-02-01), Kine
patent: 4175648 (1979-11-01), Sule
patent: 4665803 (1987-05-01), Mathauser
patent: 5368136 (1994-11-01), Walte

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