Hydraulic brake booster

Details Hydraulic brake booster Hydraulic brake booster

1975-09-24

1976-09-07

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

Apparatus having means responsive to or ameliorating the...

60413, 60547, 60582, F15B 2000, F15B 102

Patent

active

039786676

ABSTRACT:
A hydraulic brake booster for use with an open center-type power steering system includes, upon the application of the vehicle brakes, a relief valve piston mechanism for setting the fluid pressure greater than the fluid pressure being previously circulated through the power steering system and a spool valve assembly for selectively admitting the high fluid pressure to a power piston device for the brakes, so that the load upon a pump, under non-application conditions of the brakes, will be reduced whereby it will be easy to accumulate the fluid pressure for the brakes in case of an emergency due to the fact that the fluid pressure set by the relief valve piston can be greater than the pressure required for charging gas within the accumulator.

REFERENCES:
patent: 3638528 (1972-02-01), Lewis
patent: 3751912 (1973-08-01), Bach
patent: 3827242 (1974-08-01), Belart

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