Retained seat check valve

Details Retained seat check valve Retained seat check valve

1999-06-04

2000-07-18

Huson, Gregory L.

Fluid handling

Line condition change responsive valves

Direct response valves

13754319, F16K 1500

Patent

active

060892625

ABSTRACT:
A unique, inexpensive and easily manufactured check valve device features a valve housing, a valve seat, a resilient ring seal, a retaining sleeve, a valve member and a valve spring. The valve housing defines an inlet channel, an outlet channel and at least one valve bore through which the inlet and outlet channels interconnect. Formed in the valve bore is the valve seat. The valve seat has a generally flat annular surface from within which an opening emerges into a preferred one of the two channels. The resilient ring seal is situated atop, and is coaxial with the opening defined by, the flat annular surface of the valve seat. Situated within the valve bore, the retaining sleeve serves to retain the resilient ring seal by its periphery against the flat annular surface of the valve seat. The valve member is moveable within the retaining sleeve. By its head portion at one end, the valve member is adapted to be pressed against, and form a leak-proof seal with, the resilient ring seal. Compressively disposed within the valve bore against a non-seat facing side of the valve member, the valve spring compels the head portion of the valve member against the resilient ring seal. The check valve device is thus normally biased in a closed position wherein the preferred channel is cut-off from the valve bore of the valve housing.

REFERENCES:
patent: 466838 (1892-01-01), Shaddick
patent: 3145724 (1964-08-01), Pelzer
patent: 3154096 (1964-10-01), Bell
patent: 3195567 (1965-07-01), Cummings
patent: 4428464 (1984-01-01), Miura
patent: 4961449 (1990-10-01), Demeautis et al.
patent: 5092361 (1992-03-01), Masuyama et al.
patent: 5546981 (1996-08-01), Li et al.

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