Fluid handling – Systems – With flow control means for branched passages
Reexamination Certificate
2006-09-19
2006-09-19
Fox, John (Department: 3753)
Fluid handling
Systems
With flow control means for branched passages
C251S210000
Reexamination Certificate
active
07108013
ABSTRACT:
A relief valve assembly is disclosed to include a casing, an one-way valve mounted in the fluid input end of the casing for guiding in a fluid, and a relief control valve installed in the casing between the fluid input end and fluid output end and controllable to reduce the inside pressure of the casing, the relief control valve including a guide tube fastened to the casing in fluid communication between the fluid input end and fluid output end of the casing, a valve stem axially movably inserted through the guide tube, an O-ring in a groove around the valve stem between the head of the valve stem and a flange at one end of the stem body of the valve stem, and a spring member connected between the guide tube and one end of the valve stem to hold the valve stem in the close position to close the passage of the guide tube, and a control member fastened to one end of the valve stem outside the guide tube for pressing by hand to move the valve stem to the open position to open the passage of the guide tube.
REFERENCES:
patent: 2403028 (1946-07-01), Smith
patent: 2912001 (1959-11-01), Green
patent: 3171440 (1965-03-01), Napolitano
patent: 4228987 (1980-10-01), Potter
patent: 4531545 (1985-07-01), Muchow
patent: 4659061 (1987-04-01), Scheffel
patent: 5127437 (1992-07-01), Ross, II
patent: 5244007 (1993-09-01), Glave
patent: 6182700 (2001-02-01), Hannemann et al.
Fox John
Kamrath Alan D.
Nikolai & Mersereau , P.A.
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