Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems
Patent
1984-11-29
1986-09-02
Cohan, Alan
Fluid handling
Self-proportioning or correlating systems
Self-controlled branched flow systems
137854, 137860, F16K 1102
Patent
active
046090061
ABSTRACT:
A small, reliable diverter valve that maintains a relatively constant flow through a spray nozzle in spite of water supply pressure fluctuations and that positively terminates flow from the faucet spout during hand spray operation. A variable elasticity cup seal keeps constant area passageway to the spray nozzle in spite of water supply fluctuations. A normally open path, moreover, enables air to flow from the spout into the water supply system in conditions of negative supply pressure and thereby assists the cup seal in preventing backflow from the spray nozzle into the fresh water supply.
REFERENCES:
patent: 2949933 (1960-08-01), Moen
patent: 3336935 (1967-08-01), Ward
patent: 4008732 (1977-02-01), Ficher
Parkison Richard G.
Phillips George E.
American Standard Inc.
Cohan Alan
Crooks Robert G.
Salerno, Jr. James J.
Sinnott John P.
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