Hydraulic boosters for vehicle braking systems

Details Hydraulic boosters for vehicle braking systems Hydraulic boosters for vehicle braking systems

1984-12-14

1986-01-28

Hershkovitz, Abraham

Power plants

Pressure fluid source and motor

Pulsator

91369A, 91376R, 91417R, B60T 1320

Patent

active

045662754

ABSTRACT:
An hydraulic booster has a boost piston which works in a bore and is subjected to boost pressure in a boost chamber to actuate a master cylinder assembly, and a control valve assembly controls pressurization of the boost chamber in response to an input load applied to a pedal-operated input member. The input member works in a bore in the boost piston and in operation, a reaction load from the master cylinder is fed back through the booster to the input member through a reducer mechanism to provide a reaction at the pedal which is not affected by the boost pressure, and the reducer mechanism is received within a recess in the boost piston, which is defined between two relatively movable parts of the boost piston.

REFERENCES:
patent: 3961561 (1976-06-01), Knutson
patent: 4075848 (1978-02-01), Ueda
patent: 4135435 (1979-01-01), Adachi
patent: 4241642 (1980-12-01), Peeples
patent: 4248135 (1981-02-01), Peeples
patent: 4319455 (1982-03-01), Schubert
patent: 4404803 (1983-09-01), Steffes
patent: 4417445 (1983-11-01), Furuta
patent: 4433543 (1984-02-01), Thomas
patent: 4490977 (1985-01-01), Fulmer

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