Master cylinder assembly

Details Master cylinder assembly Master cylinder assembly

1977-11-04

1979-01-02

Schwadron, Martin P.

Power plants

Pressure fluid source and motor

Pulsator

60589, 60592, B60T 1120

Patent

active

041320735

ABSTRACT:
A master cylinder assembly for simultaneously actuating the front and rear wheel brakes of a vehicle. The master cylinder assembly includes a housing having a bore therein with a first piston separated from a second piston by a first spring to establish a first pressurizing chamber while a second spring separates the second piston from the bottom of the bore to establish a second pressurizing chamber. The first and second piston each have a compensating passage therethrough for communicating fluid from a reservoir into the first and second pressurizing chamber, respectively. A first valve seat located in the first pressurizing chamber is connected to a second valve seat in the second pressurizing chamber. A valve return spring in the second pressurizing chamber urges the first and second valve seats toward the first and second pistons. An operator input moves the first piston and the second piston into engagement with the first and second valve seats to prevent communication through the first and second passageways and permit simultaneous pressurization of the fluid in the first and second pressurizing chamber to synchronize the actuation of the front and rear brakes.

REFERENCES:
patent: 2332301 (1943-10-01), Cox
patent: 3946563 (1976-03-01), Riveth

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