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US 4,458,839 AGranted
Thermostatic valve assembly
AssigneeMasco Corporation
InventorRobert D. MacDonald
Life of this patent
Estimating the term…
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AssigneeMasco Corporation
InventorRobert D. MacDonald
Estimating the term…
A valve assembly comprising a temperature responsive servo-mechanism adapted to combine hot and cold water under pressure to produce a constant preselected temperature of water at an outlet. The valve assembly comprises a housing having a valving cavity, a hot water inlet leading to the valving cavity, a cold water inlet leading to the valving cavity, and a mixed water outlet passageway leading from the valving cavity. A valve member translates in the valving cavity and divides the cavity into two auxiliary chambers. A passageway through the valve member allows fluid to flow from each of the inlets to the outlet passageway at a rate that varies as the valve member translates. Passageways in the valve member permit a portion of the mixed water to flow into the auxiliary chambers. An auxiliary passageway is provided between each of the auxiliary chambers and the outlet passageway. A temperature responsive element is provided within the outlet passageway. In response to a deviation in the temperature of water in the mixing chamber the temperature responsive element closes one of the auxiliary passageways causing the valve member to translate until the water in the outlet passageway reaches the preselected temperature.
A valve for combining water from a source of pressurized hot water and a source of pressurized cold water, said valve comprising a valve body, a hot water input passageway in said valve body capable of being interconnected with said source of hot water, a cold water input passageway in said valve body capable of being interconnected with a source of cold water, a water discharge passageway in said valve body, selectively operable proportioning valving means within said valve body to regulate the relative rates of discharge of water from said input passageways to said discharge passageway, selectively operable volume discharge valving means within said valve body to regulate the rate of discharge of combined water from said discharge passageway of said valve body, a handle connected to said volume discharge valving means and manually operated to regulate said volume discharge valving means, and a thermometer positioned within said handle and having a temperature sensing portion disposed within said discharge passageway.
A valve unit for mounting to a single handle faucet socket body having a hot water inlet port supplying hot water under pressure, a cold water inlet port supplying cold water under pressure and a mixed water outlet port, said valve unit comprising an adapter section constructed for fastening to said socket body, a main valve body section sectioned on top of said adapter section;
Dependencies are inferred from the claim text.