Fluid flow control valve

Details Fluid flow control valve Fluid flow control valve

2007-06-05

2007-06-05

Rivell, John (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C251S334000

Reexamination Certificate

active

10604494

ABSTRACT:
A fluid flow control valve that may be used as both a check valve and a relief valve. The valve includes a moveable valve member having a surface capable of forming two or more valve seal areas with two or more valve seat surfaces on a valve seat member. The valve seat surfaces may be formed by coining a portion of valve seat surfaces on fingers of the valve seat member. One of the valve seat fingers in inclined from the outlet toward the inlet. The valve seat member is metal, forming a metal to metal valve seat arrangement with the valve seat member.

REFERENCES:
patent: 1679779 (1928-08-01), Oberhuber
patent: 2481713 (1949-09-01), Bertea
patent: 2969951 (1961-01-01), Walton
patent: 3433250 (1969-03-01), Hagihara
patent: 3861646 (1975-01-01), Douglas
patent: 4846216 (1989-07-01), Raymond
patent: 4949746 (1990-08-01), Kay
patent: 5326079 (1994-07-01), Ferrando et al.
patent: 5893389 (1999-04-01), Cunningham
patent: 6125822 (2000-10-01), Janik et al.
patent: 6651693 (2003-11-01), Simmons et al.

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