Motors: expansible chamber type – Working member position feedback to motive fluid control – Follower type
Patent
1979-11-20
1982-07-13
Hershkovitz, Abraham
Motors: expansible chamber type
Working member position feedback to motive fluid control
Follower type
92 98D, 92107, 92165PR, F15B 910
Patent
active
043388540
ABSTRACT:
In a servo booster the movable wall is sealed to the rear housing wall by a rolling diaphragm supported on a sleeve which projects forwardly from the rear housing wall, and fluid communication between the rear housing chamber of the booster and a valve chamber in the valve body is provided by inter-communicating passages in the valve body and diaphragm support plate. The passage in the diaphragm support plate terminates in a port opening to the rear booster chamber. In one construction the sleeve is elliptical in transverse cross-section and a pair of tie rods extend right through the booster, through the bore of the sleeve, for relieving the booster housing of braking reaction forces. In another construction, instead of tie rods, the sleeve is extended to provide a tube, arms extend through slots in the tube to connect integrally the diaphragm support plate and the valve body, and one arm contains the passage.
REFERENCES:
patent: 3057332 (1962-10-01), Kellogg
patent: 3083698 (1963-04-01), Price
patent: 3172335 (1965-03-01), Brooks
patent: 3387540 (1968-06-01), Wilson
patent: 3537358 (1970-11-01), Bunyard
Hershkovitz Abraham
Lucas Industries Limited
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