Vacuum booster

Details Vacuum booster Vacuum booster

1976-07-12

1978-04-25

Maslousky, Paul E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91369B, 137627S, F15B 910

Patent

active

040856569

ABSTRACT:
A vacuum booster has a housing the interior of which is divided into a vacuum chamber and a pressure chamber, a plunger connected to an input rod and fitted slidably in a cylinder portion of a valve body, and valve seats defined respectively on adjacent ends of the plunger and the cylinder portion to cooperate with a seating surface of a valve member for controlling respectively the communication between the pressure chamber and the atmosphere and between the two chambers. A surface portion of the seating surface of the valve member with which at least one of the valve seats engages is a curved rotational surface.

REFERENCES:
patent: 3082745 (1963-03-01), Brooks
patent: 3387455 (1968-06-01), Eggstein
patent: 3478519 (1969-11-01), Eggstein

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