Power servo booster

Details Power servo booster Power servo booster

1982-11-29

1985-01-29

Hershkovitz, Abraham

Motors: expansible chamber type

With motive fluid valve

Independent control of bypass between opposed working chambers

92 99, 92 48, F01B 1900

Patent

active

044958544

ABSTRACT:
A power servo booster in which the diaphragms are freely pivotable from the power piston so as to prevent folding and collapse of the diaphragms in the non-powered state. A shell of the booster is divided into two volumes with a power piston and diaphragm in each volume dividing the corresponding volume into chambers at a negative pressure and at atmospheric pressure. The inner peripheral ends of the two diaphragms are fitted into grooves formed on the sides of the pistons in such a manner as to be freely rotatable or pivotable thereby preventing folding of the diaphragms.

REFERENCES:
patent: 3082745 (1963-03-01), Brooks
patent: 3136229 (1964-06-01), Bauman
patent: 3528301 (1970-09-01), Wasmer
patent: 3577832 (1971-05-01), Parsons
patent: 3760693 (1973-09-01), Myers
patent: 3799008 (1974-03-01), Danek
patent: 3868890 (1975-03-01), Roberts
patent: 3958497 (1976-05-01), Gardner
patent: 4043251 (1977-08-01), Ohmi
patent: 4257312 (1981-03-01), Ohmi
patent: 4270353 (1981-06-01), Thomas
patent: 4270438 (1981-06-01), Thomas
patent: 4292887 (1981-10-01), Ohta

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