Motors: expansible chamber type – Differential
Patent
1974-10-24
1976-09-21
Cohen, Irwin C.
Motors: expansible chamber type
Differential
91436, 91465, 91DIG2, F15B 1108, F15B 13042
Patent
active
039812286
ABSTRACT:
A double-acting user has a first and an oppositely acting second pressure-fluid compartment. A source of pressure fluid receives fluid from a fluid reservoir. A first conduit has one section communicating with the first compartment of the user, and another section communicating with the source of pressure fluid. A second conduit communicates with the reservoir. A control valve is interposed in the first conduit and is movable between a first position in which it connects the sections of the first conduit with one another and a second position in which it connects both of the sections of the first conduit with the second conduit. A pressure-reducing and limiting valve has a first port communicating with the second compartment of the user, a second port communicating with the reservoir, a third port communicating with that section of the first conduit which in turn communicates with the source, and a pressure-limiting arrangement which serves to limit the fluid pressure in the second compartment of the user.
REFERENCES:
patent: 523419 (1894-07-01), Thorpe
patent: 2376519 (1945-05-01), Stacy
patent: 3169453 (1965-02-01), Westveer
patent: 3759144 (1973-09-01), Ikeda
patent: 3863547 (1975-02-01), Meier et al.
Cohen Irwin C.
Robert Bosch G.m.b.H.
Striker Michael J.
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