Pumps – Motor driven – Fluid motor
Patent
1989-12-29
1991-06-04
Carone, Michael J.
Pumps
Motor driven
Fluid motor
F04B 4504
Patent
active
H00009288
ABSTRACT:
A gas system using a liquid to provide an oil-free, virtually noiseless positive
egative pressure to a pressure vessel. A high-pressure gas-storage reservoir, a compression tank and a pump liquid supply reservoir are interconnected by a series of valves. To provide a high positive pressure to a gas, a low pressure gas is admitted to the compression tank and then liquid is pumped from the storage reservoir into the tank, which has a flexible membrane separating the gas and the liquid. The liquid compresses the gas which is then vented out of the compression tank to the gas storage reservoir and the pump liquid is drained back into the liquid supply reservoir. A low pressure may be applied to the compression tank by first filling the tank with liquid and closing all inlet valves. Then a drain valve is opened to the liquid supply reservoir causing evacuation of the tank.
REFERENCES:
patent: 865424 (1907-09-01), McFarlane
patent: 2478321 (1949-08-01), Robbins
patent: 3168045 (1965-02-01), Sebastiani
patent: 3496879 (1970-02-01), Brandes
patent: 3586461 (1971-06-01), Erlandson
patent: 4316703 (1982-02-01), Kunzelman
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