Tandem pneumatic pressure booster

Details Tandem pneumatic pressure booster Tandem pneumatic pressure booster

1987-11-18

1989-03-21

Garrett, Robert E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91376R, 92 48, F15B 910

Patent

active

048133370

ABSTRACT:
A tandem pneumatic pressure booster in a braking apparatus for a motor vehicle, comprising a housing; front and rear movable walls; a center plate; the housing being hermetically closed by front and rear shells; front and rear variable pressure chambers; front and rear referential pressure chambers; a valve body having a control valve therein; a reaction disc containing case; a cylindrical passage member adapted to fit over the barrel of said case; the front movable wall being fixed to the case-passage member assembly, said passage member being provided with a referential pressure chamber communicating passage; and a variable pressure chamber communicating passage, whereby these parts may be formed into a configuration suitable for die casting and for improving mass productivity without deteriorating the differential pressure.

REFERENCES:
patent: 3603208 (1971-09-01), Kytta
patent: 4512237 (1985-04-01), Endoh et al.
patent: 4535680 (1985-08-01), Takayama et al.
patent: 4587884 (1986-05-01), Tsubouchi
patent: 4658704 (1987-04-01), Mori et al.
patent: 4718328 (1988-01-01), Mori et al.

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