Valve assembly

Details Valve assembly Valve assembly

1986-11-17

1988-04-12

Chambers, A. Michael

Pumps

Condition responsive variable volumetric capacity expansible...

Valved clearance chamber

417276, 417277, 251 25, 251 3001, F04B 4900

Patent

active

047370807

ABSTRACT:
A valve assembly is provided which includes a seat structure and a cage structure. A valve member is movable between open and closed positions and includes an upstream side adapted to engage the seat structure with the valve member in its closed position and a downstream side connected to the cage struture. The cage structure includes a manifold communicating with the valve member downstream side. A pilot valve is provided for selectively venting the manifold to an area of low fluid pressure whereby the valve member is held in its open position.

REFERENCES:
patent: 851262 (1907-04-01), Tatum
patent: 1519478 (1924-12-01), Beaton
patent: 1625681 (1927-04-01), Prellwitz
patent: 1655163 (1928-01-01), Ritter
patent: 1870956 (1932-08-01), McAllister
patent: 1969706 (1934-08-01), Hirsch
patent: 2833462 (1958-05-01), Scheerer
patent: 3045892 (1962-07-01), White
patent: 3972652 (1976-08-01), Minnicino
patent: 4384826 (1983-05-01), Gregg
patent: 4480965 (1984-11-01), Ishizuka

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