Motors: expansible chamber type – With motive fluid valve – Contracting chamber exhaust valve controlled by expanding...
Patent
1975-07-17
1977-10-04
Cohen, Irwin C.
Motors: expansible chamber type
With motive fluid valve
Contracting chamber exhaust valve controlled by expanding...
91446, 91448, 91467, 137119, 13762418, F15B 13042
Patent
active
040517675
ABSTRACT:
A system for supplying pressurized fluid from a pressure source to a fluid-operated power device comprises an actuator, a sole first pressure conduit leading from the source to the actuator and at least two second pressure conduits leading from the actuator to the power device. The actuator comprises a cylinder and a piston arranged for simultaneous reciprocation and rotation in the cylinder. The reciprocation of the piston is effected by the fluid pressure introduced periodically into the cylinder through the first pressure conduit. The rotation of the piston is effected by the cooperation of a pin affixed to the cylinder wall with a helically extending groove in the cylindrical piston face. The piston is provided with a duct arrangement which, coordinated with the course of the groove, is laid out in such a manner that as the piston consecutively arrives in its end position, upon completing a forward stroke in response to the fluid pressure, always a different one of the second pressure conduits is supplied with the fluid pressure from the first pressure conduit through the duct arrangement in the piston.
REFERENCES:
patent: 2678845 (1954-05-01), Fitter
patent: 3010433 (1961-11-01), Codling
patent: 3018788 (1962-01-01), Perlis
patent: 3319531 (1967-05-01), Sanders
patent: 3369565 (1968-02-01), Haggard, Jr.
patent: 3402553 (1968-09-01), Mercier
patent: 3459208 (1969-08-01), Clyde
patent: 3785391 (1974-01-01), Miller
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