Air booster with pressure-balanced valve

Details Air booster with pressure-balanced valve Air booster with pressure-balanced valve

1988-08-31

1990-03-06

Garrett, Robert E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91376R, 92 97, F15B 910

Patent

active

049055712

ABSTRACT:
The invention provides a brake booster including in a preferred embodiment a housing, first and second annular flexible diaphragms spaced from one another forming a sealed second chamber within the housing and a sealed first chamber between the first diaphragm and the first end of the housing, a generally annular shaped power piston for connection with the master cylinder piston, a chamber valve seat separating the first and second chambers, an inlet valve slidably mounted within the power piston, and a control valve spring biased away from the power piston and connected with the pedal linkage and being slidably and sealably mounted within first end of the housing.

REFERENCES:
patent: 2976850 (1961-03-01), Stelzer
patent: 3013536 (1961-12-01), Cripe
patent: 3143926 (1964-08-01), Stelzer
patent: 4633760 (1987-01-01), Wagner

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