Internally boosted master cylinder

Details Internally boosted master cylinder Internally boosted master cylinder

1996-07-29

1998-04-07

Lopez, F. Daniel

Power plants

Pressure fluid source and motor

Pulsator

60553, 60557, 60560, 91434, B60T 1312

Patent

active

057351244

ABSTRACT:
A brake system for use in connection with a vehicle including a hydraulic internally boosted master cylinder, a hydraulic pump, and hydraulic brakes wherein the master cylinder controls hydraulic fluid pressure to the brakes and has a primary or sensing piston, a modulator stem, and a secondary pistons, with the sensing piston responsive to a mechanical input force to urge the secondary piston forwards increasing the hydraulic fluid pressure applied to the brakes. In a second embodiment, the internally boosted master cylinder further includes a tertiary piston movable by hydraulic pressure between retracted and extended positions and biased toward the retracted position by a tertiary piston return spring. The tertiary piston controls hydraulic pressure applied to one or more brakes independent of the brakes controlled by the secondary piston.

REFERENCES:
patent: 2964909 (1960-12-01), Garrison
patent: 4126996 (1978-11-01), Leiber
patent: 4280395 (1981-07-01), Shaw
patent: 4641894 (1987-02-01), Belart
patent: 5031968 (1991-07-01), Takata

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