Fluid handling – Self-proportioning or correlating systems – Supply and exhaust type
Patent
1989-05-26
1990-05-15
Cohan, Alan
Fluid handling
Self-proportioning or correlating systems
Supply and exhaust type
1376275, F16K 1110
Patent
active
049249010
ABSTRACT:
A valve for use in association with a pressure chamber and having a valve body with a passageway therethrough, and an upstream valve surface and a downstream valve surface, an inlet conduit formed in the valve body communicating with the upstream surface, a valve stem located within the passageway adapted to permit flow of fluid through the passageway, an upstream valve head attached to the stem to seal the inlet conduit, an outlet conduit in the valve head to permit flow from the pressure chamber to the valve passageway, and a valve cap on the other end of the valve stem, the valve head and valve cap being movable relative to one another. Also disclosed is a piston for use in conjunction with such a valve having a configuration to reduce unswept volume.
REFERENCES:
patent: 2126140 (1938-08-01), Ross
patent: 2807215 (1955-07-01), Hawthurst
patent: 3811798 (1974-05-01), Bickford
patent: 4243064 (1981-01-01), Nolte
Aquadyne Inc. Brochure; Hydraulic Institute Standards; "Calculating Volumetric Efficiency".
Cohan Alan
Fluid Jet International Inc.
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