Hydraulic booster with back pressure control

Details Hydraulic booster with back pressure control Hydraulic booster with back pressure control

1979-02-28

1981-06-23

Maslousky, Paul E.

Motors: expansible chamber type

Constantly applied motive fluid with controlled venting

Fluid vented through working member

91369A, 91420, 91431, 91446, F15B 910

Patent

active

042743265

ABSTRACT:
A hydraulic power brake system in which a hydraulic power brake booster has one or more back pressure control valves to produce a restriction downstream of the booster control valve after the booster has been actuated to build up some booster power pressure. This back pressure on the booster control valve is effective to control hydraulic valve noise during booster operation. There is substantially no fluid restriction in the booster when the booster is not actuated. Three back pressure control valve arrangements are disclosed.

REFERENCES:
patent: 2674138 (1954-04-01), Mize
patent: 3050944 (1962-08-01), Schwartz et al.
patent: 3515031 (1970-06-01), McPherson
patent: 3631761 (1972-01-01), Rumsey
patent: 3749112 (1973-07-01), Nishikow
patent: 4181064 (1980-01-01), Flory

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