Brake booster

Details Brake booster Brake booster

1976-05-20

1978-08-22

Cohen, Irwin C.

Power plants

Pressure fluid source and motor

Pulsator

60553, 60581, 60593, 91369B, 91411A, B60T 1312

Patent

active

041079264

ABSTRACT:
A dual source power brake booster assembly includes an air-vacuum operated booster section and a hydraulic pressure operated booster section in series. The assembly is so arranged that the vacuum booster section is initially actuated to obtain a booster brake operation when the vehicle operator depresses a brake pedal, and the hydraulic booster section is actuated so as to continue the booster brake operation in response to the increased depression on the brake pedal after the vacuum booster reaches its limit or run-out condition. Both of the booster sections have power members or pistons, respectively, which are always actuated as a unit, so that a common reaction mechanism may be provided for both booster sections.

REFERENCES:
patent: 2844941 (1958-07-01), Ayers
patent: 3050944 (1962-08-01), Schwartz
patent: 3685289 (1972-08-01), Kobashi
patent: 3727405 (1973-04-01), Randol
patent: 3813992 (1974-06-01), Brown
patent: 3838628 (1974-10-01), Kita
patent: 3914941 (1975-10-01), Gardner
patent: 3935709 (1976-02-01), Mathues
patent: 3967536 (1976-07-01), Bach
patent: 3973401 (1976-08-01), Reynolds

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