Hydraulic brake booster for a vehicular brake system

Details Hydraulic brake booster for a vehicular brake system Hydraulic brake booster for a vehicular brake system

1979-06-04

1981-03-17

McCarthy, Edward J.

Power plants

Pressure fluid source and motor

Pulsator

60581, 60582, 91391R, B60T 1300, B60T 1132, F15B 1310

Patent

active

042559316

ABSTRACT:
A hydraulic brake booster for a vehicle brake system which has a control valve, actuatable via an excursion-limiting spring, which directs the flow of pressure medium from a supply source as an auxiliary force means. The excursion-limiting spring disposed subsequent to the brake pedal provides for sensitive response on the part of the control valve. In event the auxiliary force fails, the excursion-limiting spring is made ineffective so that pedal travel does not occur without being utilized. A shut-off mechanism is included to make the excursion-limiting spring ineffective has a shut-off member dependent on brake actuation and to which a motion pulse dependent on brake actuation can be imparted in the area of its outset position. In this manner, the shut-off mechanism is used during each occurrence of braking and thus cannot seize as a result of corrosion.

REFERENCES:
patent: 3625005 (1971-12-01), Saunders
patent: 3751919 (1973-08-01), Ron
patent: 3978667 (1976-09-01), Ohara
patent: 4034566 (1977-07-01), Suketomo
patent: 4197710 (1980-04-01), Leiber

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