Check valve assembly

Details Check valve assembly Check valve assembly

1986-07-18

1987-06-16

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

417511, F16K 1514

Patent

active

046730001

ABSTRACT:
An O-ring is received in a groove having only an arcuate portion thereof operative to act as a check valve, with the arcuate portion being movable into a chordal recess so that it does not provide full circumferential sealing engagement in the area of the arcuate portion, allowing fluid pressure or flow therethrough so long as the arcuate portion is so displaced. The resilient character of the O-ring urges the arcuate portion back to the closed position along a tapered ramp surface of the recess into which it was displaced when there is no pressure differential acting across the O-ring. Movement of the O-ring support member relative to a fixed surface normally sealed by the O-ring and net pressure forces on the O-ring may also tend to return the O-ring to the closed position in one direction of movement.

REFERENCES:
patent: 2561009 (1951-07-01), Byers
patent: 2614793 (1952-10-01), Storm

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