Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1993-03-12
1994-04-26
Fox, John C.
Fluid handling
Systems
Flow path with serial valves and/or closures
1375137, 251117, F16K 1518
Patent
active
053057945
ABSTRACT:
A gas cylinder valve assembly has an outside portion positioned outside the gas cylinder and an inside portion positioned inside the gas cylinder. A canal for conducting gas passes through the inside and outside portions. The canal communicates with the inside of the cylinder through orifices in the inside portion. The canal further communicates with the inside of the gas cylinder through an opening, gas flow through which is controlled by a check valve. The check valve normally closes the opening. Gas in the cylinder flows to the outside through the orifices. During the filling operation, gas is supplied from outside under pressure. The gas under pressure opens the check valve, and gas flows both through the orifices and through the opening.
REFERENCES:
patent: 2375498 (1945-05-01), Seymour
patent: 2731298 (1956-01-01), Green
patent: 2998168 (1961-08-01), Waldherr
patent: 3060965 (1962-10-01), Taggart
patent: 3645286 (1972-02-01), Follett
patent: 3930517 (1976-01-01), Gagala
patent: 4444230 (1984-04-01), Van Mullem
patent: 4635680 (1987-01-01), Fang
Matheson, "Guide to Safe Handling Of Compressed Gases", third printing, p. 39, 1983.
Fox John C.
NEC Electronics Incorporated
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