Motors: expansible chamber type – Cyclically operable – Working chamber receives controlled motive fluid supply from...
Patent
1985-02-21
1987-06-23
Look, Edward K.
Motors: expansible chamber type
Cyclically operable
Working chamber receives controlled motive fluid supply from...
91321, 91395, 91417R, F01B 718
Patent
active
046743979
ABSTRACT:
The fluid-powered, reciprocating motor includes a cylinder having an inlet chamber and an outlet chamber, a differential area piston mounted in the cylinder, and an output or power shaft connected to the piston. A pressurized fluid, either a gas or a liquid, is continuously introduced into the cylinder inlet chamber and acts on the smaller piston area to move the piston in one direction. A small stream of the fluid flows from the cylinder inlet chamber into the cylinder outlet chamber through a control passage in the piston and is exhausted from the cylinder outlet chamber through an outlet passage until the piston is moved far enough for a valve member carried by the piston to close the outlet passage. Fluid pressure subsequently building up in the cylinder outlet chamber acts on the larger piston area and moves the piston in the opposite direction. The valve member is biased toward an open position by a spring which is compressed as the piston moves in the opposite direction and eventually overcomes the pressure force acting on the valve member to open the valve member and vent pressure from the cylinder outlet chamber so that the cycle can be repeated.
REFERENCES:
patent: 1780817 (1930-11-01), Dubois
patent: 2630181 (1953-03-01), Solum
patent: 2789510 (1957-04-01), Meynig
patent: 3023739 (1962-03-01), Dickson, Jr. et al.
patent: 3230839 (1966-01-01), DeGaston
patent: 3500735 (1970-03-01), Greene
patent: 3524385 (1970-08-01), Ottestad
patent: 3757640 (1973-09-01), Karol
patent: 3939755 (1976-02-01), Tabor
patent: 4031812 (1977-06-01), Koshelev
Buse Glenn A.
Look Edward K.
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