Dual-circuit master cylinder with solenoid opened reservoir valv

Details Dual-circuit master cylinder with solenoid opened reservoir valv Dual-circuit master cylinder with solenoid opened reservoir valv

1988-01-12

1989-08-01

Garrett, Robert E.

Power plants

Pressure fluid source and motor

Pulsator

605471, 60562, 60585, 60589, 60591, B60T 1120, B60T 1134

Patent

active

048523518

ABSTRACT:
A tandem master cylinder has a housing containing two pressure chambers for connection to separate braking circuits. A pressure piston component forms pistons movable in the pressure chambers to supply fluid under pressure to the circuits. A balance piston has opposed surfaces subject to the pressures respectively in the chambers and is movable, in response to a pressure difference between the chambers, to reduce the pressure difference. Control valves operate in response to brake actuating movement of the piston component normally to isolate the chambers from a fluid supply reservoir, and a disabling device disables the respective control valves individually to prevent pressurization of one of the chambers when actuation of one brake only is required.

REFERENCES:
patent: 3253409 (1966-05-01), Kellogg et al.
patent: 3795111 (1974-03-01), Haraikawa
patent: 3799300 (1974-03-01), Cochrane et al.
patent: 3800540 (1974-04-01), Papiau
patent: 4072012 (1978-02-01), Kawakami
patent: 4093313 (1978-06-01), Burckhardt
patent: 4338787 (1982-07-01), Kawaguchi
patent: 4433543 (1984-02-01), Thomas et al.
patent: 4475336 (1984-10-01), Runkle
patent: 4530209 (1985-07-01), Steffes
patent: 4667476 (1987-05-01), Takata et al.
patent: 4679397 (1987-07-01), Kosarski et al.
patent: 4708405 (1987-11-01), Belart et al.

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