Fluid handling – Systems – Flow path with serial valves and/or closures
Reexamination Certificate
2007-01-23
2007-01-23
Lee, Kevin (Department: 3753)
Fluid handling
Systems
Flow path with serial valves and/or closures
C137S505420
Reexamination Certificate
active
10788348
ABSTRACT:
A main valve reduces an unregulated pressure of a high-pressure gas to a regulated pressure by being interlocked with a diaphragm, which receives the regulated pressure within a pressure regulating chamber and is displaced. A subsidiary valve is interlocked with the main valve through a plunger and reduces the unregulated pressure of the high-pressure gas to the regulated pressure. The subsidiary valve is located such that the force, which accompanies a pressure loss occurring at the subsidiary valve and which the subsidiary valve receives, cancels the force, which accompanies the pressure loss occurring at the main valve and acts upon the plunger. An adjustor adjusts a pressure loss value occurring at the subsidiary valve so as to be equal to the pressure loss value occurring at the main valve.
REFERENCES:
patent: 3386458 (1968-06-01), Wasserman et al.
patent: 4484695 (1984-11-01), Fallon et al.
patent: 5022435 (1991-06-01), Jaw-Shiunn
patent: 6026849 (2000-02-01), Thordarson
patent: 2204313 (1974-05-01), None
patent: 793561 (1955-07-01), None
patent: 1536959 (1976-11-01), None
patent: 8303773 (1996-11-01), None
patent: 2001166834 (1999-12-01), None
Lee Kevin
Trojan Law Office
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