Combined check/pressure control valve

Details Combined check/pressure control valve Combined check/pressure control valve

2006-08-29

2006-08-29

Hepperle, Stephen M. (Department: 3753)

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

C137S493900, C137S539000

Reexamination Certificate

active

07096883

ABSTRACT:
The invention relates to a combined check and pressure control valve (10), comprising a check valve element (34) which is adjustable between an opened position and a closed position, and a pressure control valve element (42) which on exceeding a predetermined pressure can be lifted off a valve seat (40), so that at least one outflow channel is opened, characterized in that the check valve element (34) is a valve plate which in the closed position lies against at least one annular sealing seat (30, 32), which is impressed in a thin-walled component, preferably a sheet metal part (22).

REFERENCES:
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patent: 3661128 (1972-05-01), Eshelman
patent: 3976096 (1976-08-01), Kass et al.
patent: 4016904 (1977-04-01), Gordon
patent: 4580596 (1986-04-01), Stehling
patent: 4747475 (1988-05-01), Hagwood et al.
patent: 5404904 (1995-04-01), Glaser
patent: 6305412 (2001-10-01), Steele
patent: 206227 (1907-07-01), None
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patent: 19643041 (1998-04-01), None
patent: 1601038 (1981-10-01), None
patent: 992232 (1965-05-01), None
patent: WO9301435 (1993-01-01), None
patent: WO03074912 (2003-09-01), None
PCT International Search Report dated May 27, 2003.
German Search Report dated Feb. 20, 2003.

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