Power brake unit for automotive vehicles

Details Power brake unit for automotive vehicles Power brake unit for automotive vehicles

1979-05-16

1981-04-28

Hershkovitz, Abraham

Power plants

Pressure fluid source and motor

Pulsator

60550, 60581, 60582, B60T 1300

Patent

active

042637848

ABSTRACT:
A power brake unit for automotive vehicles includes a brake valve to meter brake fluid from an auxiliary fluid source into a booster chamber to act upon a booster piston arrangement. The booster piston arrangement includes a first booster piston and a second booster piston, the latter being held in an operative position by the fluid from the auxiliary fluid source and being inoperative in the event of failure of the auxiliary fluid source. If the auxiliary fluid source fails, the brake pedal force is directly and mechanically transmitted from the brake pedal to the master cylinder piston.

REFERENCES:
patent: 2945352 (1960-07-01), Stelzer
patent: 3298177 (1967-01-01), Kellogg
patent: 3334548 (1967-08-01), Van House
patent: 4137718 (1979-02-01), Belart
patent: 4181064 (1980-01-01), Flory

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