Pneumatic booster

Details Pneumatic booster Pneumatic booster

1985-03-18

1987-09-01

Garrett, Robert E.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Follower type

91369B, 91376R, F15B 910

Patent

active

046900349

ABSTRACT:
A pneumatic booster of the type including a housing, a power piston partitioning the interior of the housing into a constant pressure front chamber and a variable pressure rear chamber, a return spring disposed in the front chamber and biasing the power piston rearwards, a reaction disc mounted on the power piston, an output shaft disposed frontwards of the reaction disc, an input shaft disposed rearwards of the reaction disc, and a valve mechanism associated with the input shaft and controlling the pressure in the rear chamber. A lever is mounted on the front surface of the power piston with radially outer end thereof being biasing against the front surface of the power piston by the return spring and the radially inner end thereof being engageable with the output shaft to transmit at least a part of the output force of the booster from the power piston to the output shaft.

REFERENCES:
patent: 3209658 (1965-10-01), Randol
patent: 3246578 (1966-04-01), Randol
patent: 4259893 (1981-04-01), Ando et al.
patent: 4283911 (1981-08-01), Nakamura et al.
patent: 4386554 (1983-06-01), Katagiri et al.
patent: 4493243 (1985-01-01), Horibe

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