Non-return valve

Details Non-return valve Non-return valve

2005-11-29

2005-11-29

Krishnamurthy, Ramesh (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C137S512150, C251S900000, C277S928000

Reexamination Certificate

active

06968863

ABSTRACT:
A non-return valve having a circumferential face and a channel with a mouth at one end of the channel and located in a groove having circumferential edges which are adjustable and fixable relative to each other and a valve comprising a O-ring manufactured of an elastic material for releasing the mouth at a predetermined pressure in the channel.

REFERENCES:
patent: 3154486 (1964-10-01), Weaver
patent: 3363644 (1968-01-01), Malec
patent: 3451422 (1969-06-01), Chorkey
patent: 3459217 (1969-08-01), Callahan
patent: 3583430 (1971-06-01), Toennesen
patent: 4497749 (1985-02-01), Strauss
patent: 5660205 (1997-08-01), Epstein
patent: 5762103 (1998-06-01), Gregoire
patent: 3360 (1878-05-01), None

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