Power servo booster

Details Power servo booster Power servo booster

1978-10-26

1981-10-06

Hershkovitz, Abraham

Expansible chamber devices

Collapsible chamber wall portion

Wall portion formed of flexible material

92 89D, 92 99, F01B 1900

Patent

active

042928877

ABSTRACT:
A power servo of the fluid differential type having a power piston and a diaphragm defining two cavities maintained at a differential pressure. An air passage is formed to release any air present in a space between the diaphragm and the disc portion of the power piston. The air passage may be formed as a split groove in the flange or as a hole through it. The groove may be either circumferential or axial to allow air to escape into the atmospheric chamber of the power servo.

REFERENCES:
patent: 2258009 (1941-10-01), Horton
patent: 2972983 (1961-02-01), Ayers, Jr.
patent: 3017866 (1962-01-01), Stelzer
patent: 3090402 (1963-05-01), St. Clair
patent: 3289547 (1966-12-01), Kytta
patent: 3312147 (1967-04-01), Reichard
patent: 3756124 (1973-09-01), Camm
patent: 3981227 (1976-09-01), Azuma

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