Check valve having reserved mechanical closure

Details Check valve having reserved mechanical closure Check valve having reserved mechanical closure

1995-09-14

1997-04-22

Ferensic, Denise L.

Fluid handling

Line condition change responsive valves

Direct response valves

137242, 251 82, F16K 1500

Patent

active

056222050

ABSTRACT:
A check valve has a pivotal arm for striking a flap against a seal that has a knife edge for cutting occasionally lodged debris. The flap without an integral arm is light to provide minimum resistance to flow of fluid in a normal direction. Greater efficiency permits a spring for biasing an actuating mechanism that is aligned with the pivotal arm to be weaker so that fluid can flow more readily in a normal direction and the spring can be reset easier.

REFERENCES:
patent: 655741 (1900-08-01), Scott
patent: 703832 (1902-07-01), Rigby
patent: 961738 (1910-06-01), Stickel
patent: 4637425 (1987-01-01), Petersen
patent: 4887792 (1989-12-01), Kuo

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