Fluid handling – Systems – Multiple inlet with single outlet
Patent
1979-02-27
1980-10-14
Nilson, Robert G.
Fluid handling
Systems
Multiple inlet with single outlet
137628, 13763019, F16K 1900
Patent
active
042275482
ABSTRACT:
A mixing valve particularly suited for use as a water faucet includes separate finger-operated lever controls for selectively delivering an unmixed flow of cold water, an unmixed flow of hot water, and one or more mixed flows of intermediate temperature water. An intermediate temperature flow is obtained by combining and mixing separate flows of cold and hot water in a mixing chamber. A temperature selection lever is provided for positioning a flow restriction element to control the relative proportion of the flows of cold and hot water delivered to the mixing chamber so that any desired intermediate temperature can be selected for the mixed flow delivered from the mixing chamber. Constant temperature of a mixed flow is maintained throughout the available range of flow rates in part by coordinating the admittance of cold and hot flows to the mixing chamber with respect to the discharge of mixed fluid from the mixing chamber so that suitable back pressure is maintained in the mixing chamber. A stacked array of layer elements defines the valve's housing and provides an inexpensive cartridge which can be replaced as a unit in the event service is needed.
REFERENCES:
patent: 2453409 (1948-11-01), Chace
patent: 3047014 (1962-07-01), Kovach
patent: 3348019 (1967-10-01), Miller
patent: 3370609 (1968-02-01), Botnick
patent: 3468344 (1969-09-01), Sanford
patent: 3536097 (1970-10-01), Caparone
patent: 3603349 (1971-09-01), Botnick
patent: 3750701 (1973-08-01), Botnick
patent: 4178964 (1979-12-01), Moore
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