Motors: expansible chamber type – Working member position feedback to motive fluid control – Follower type
Patent
1983-01-19
1985-01-22
Cline, William R.
Motors: expansible chamber type
Working member position feedback to motive fluid control
Follower type
91376R, B60T 1354
Patent
active
044944438
ABSTRACT:
A vacuum booster which includes a push rod, a housing having a first and second compartment, a power piston located in the housing and operated by a pressure differential between the first and second compartments and which further includes a small and large diameter portion, a control valve operatively associated with the push rod and located within the power piston for controlling the pressure differential between the first and second compartments in response to movement of the push rod, an output member having a first end slidably disposed within the large diameter portion of the power piston wherein the control valve includes an air-valve element one end of which is slidably disposed in the small diameter portion of the power piston a resilient reaction disc located adjacent the first end of the output member and disposed within the large diameter portion of the power piston, a metallic sleeve provided between an outer peripheral portion of the first end of the output member and an outer peripheral portion of the reaction disc and a resilient member provided between the large diameter portion and the metallic sleeve.
REFERENCES:
patent: 666181 (1863-07-01), Price
patent: 1621858 (1927-03-01), Sherwood
patent: 3150493 (1964-09-01), Rike
patent: 3177777 (1965-04-01), Kenrick
patent: 3183795 (1965-05-01), Kirk
patent: 3393536 (1968-07-01), Daur
patent: 3754450 (1973-08-01), Putt et al.
patent: 4271670 (1981-06-01), Ohmi
Aisin Seiki Kabushiki Kaisha
Cline William R.
Smith Randolph A.
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