Check valve

Details Check valve Check valve

1995-02-13

1997-02-11

Rivell, John

Fluid handling

Line condition change responsive valves

Direct response valves

137854, 13754315, F16R 1514

Patent

active

056011121

ABSTRACT:
A check valve has a valve element 12 integral with a metallic bushing 11 and made of a substantially annular rubber material. A hole is provided in the center of the valve element, and a shaft 13 passes through the hole. A spring 2 is mounted around the shaft, and a back face of the valve element is supported at one end of the spring through the metallic bushing. A truncated conical stopper 4 includes a recess at an intermediate portion, and is mounted downstream of the valve element to restrict the amount of movement and deformation of the valve element. The stopper is fixed at one end 13b of the shaft. It is thereby possible to provide a reliable check valve in which flow resistance can significantly be reduced, and sufficient safety can be established against counter flow pressure.

REFERENCES:
patent: 828036 (1906-08-01), Lindsay
patent: 2747609 (1956-05-01), Sekera
patent: 3007693 (1961-11-01), Templeton
patent: 3605132 (1971-09-01), Lineback
patent: 3840175 (1974-10-01), Jacuzzi
patent: 3845784 (1974-11-01), Sullivan
patent: 5014739 (1991-05-01), Csazar

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