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Class Information
Number: 236/25A
Name: Automatic temperature and humidity regulation > Closed fluid heaters > Flow controlled > Flow responsive valve controlling fuel

Patents under this class:

Patent Number Title Of Patent Date Issued
6886756 Method and apparatus for controlling and providing electrical connections for a boiler May. 3, 2005
6648235 Control method of thermostatic system Nov. 18, 2003
5946926 Variable flow chilled fluid cooling system Sep. 7, 1999
5092519 Control system for water heaters Mar. 3, 1992
5039007 Water and air heating system Aug. 13, 1991
4738395 Fluid flow rate detector and system Apr. 19, 1988
4678116 Water heater Jul. 7, 1987
4627416 Water heater Dec. 9, 1986
4556168 Rapid response water heating and delivery system Dec. 3, 1985
4549525 Oil and gas water heater Oct. 29, 1985
4505253 Water heater Mar. 19, 1985
4497434 Detector of the flowing of a fluid in a pipe and energy saving device for a hot water system using this detector Feb. 5, 1985
4431132 Control valve systems for gas water heaters Feb. 14, 1984
4385724 Apparatus for controlling the water temperature of a spa May. 31, 1983
4171771 Central heating systems Oct. 23, 1979
4147159 Temperature controlled instantaneous water heating apparatus Apr. 3, 1979

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