Hydraulic brake booster

Details Hydraulic brake booster Hydraulic brake booster

1978-06-19

1980-07-29

Hershkovitz, Abraham

Power plants

Pressure fluid source and motor

Pulsator

60547A, 60547B, 91450, 91513, B60T 1300

Patent

active

042144485

ABSTRACT:
There is disclosed a hydraulic brake booster comprising a valve spool providing for alternate connection of a booster chamber with a source of pressure-transmitting fluid and an unpressurized return reservoir. The source of pressure-transmitting fluid is a pump-circulated fluid adapted to be throttled by a mechanically actuatable throttle valve arranged coaxially with the valve spool. Since the throttle valve is actuated independently of the pressure in the booster chamber, the need to produce a supply pressure when the brake is not actuated is eliminated. The pump is subjected to load only during the relatively short period of brake activation.

REFERENCES:
patent: 3714869 (1973-02-01), Flory
patent: 3782781 (1974-01-01), Lewis
patent: 3817037 (1974-06-01), Belart
patent: 3831491 (1974-08-01), Thomas
patent: 3851473 (1974-12-01), Bainbridge

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