Power plants – Pressure fluid source and motor – Pulsator
Patent
1989-09-27
1991-07-16
Look, Edward K.
Power plants
Pressure fluid source and motor
Pulsator
60550, 60453, 91373, 91376R, 92 78, 92 81, 92 97, 92100, 251358, 137854, B60T 1326, F15B 910, F15B 2104, F16K 1514
Patent
active
050314041
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: 2579855 (1951-12-01), Pockel et al.
patent: 3055390 (1962-09-01), Scheldorf
patent: 4109464 (1978-08-01), Wickland
patent: 4633760 (1987-01-01), Wagner
patent: 4711224 (1987-12-01), Eckhardt
patent: 4805661 (1989-02-01), Knapp et al.
patent: 4883023 (1989-11-01), Tsang et al.
patent: 4905571 (1990-03-01), De Hoff et al.
DeHoff Edward J.
Flory Donald M.
Miller Jon E.
Osterday Craig A.
Schenk Donald E.
General Motors Corporation
Helms Ernest E.
Kapsalas George
Look Edward K.
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