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Class Information
Number: 236/45
Name: Automatic temperature and humidity regulation > Draft-operated
Description: Devices controlling the operation of a heater according to the draft.










Patents under this class:

Patent Number Title Of Patent Date Issued
8511578 Vapor extraction apparatus having an extended range of functions Aug. 20, 2013
8505529 Alternate intake apparatus Aug. 13, 2013
8302594 Air control regulator for combustion chamber Nov. 6, 2012
8079358 Air control regulator for combustion chamber Dec. 20, 2011
7861707 Gravity feed natural draft pellet stove Jan. 4, 2011
6629523 Heated make-up air system Oct. 7, 2003
5346126 Device for controlling heating efficiency of water heater Sep. 13, 1994
5259411 Flow control Nov. 9, 1993
5244147 Furnace pressure control method Sep. 14, 1993
5010766 Error compensation for measuring gauges Apr. 30, 1991
4846144 Cooking range Jul. 11, 1989
4779795 Convector room heater incorporating a hot water boiler Oct. 25, 1988
4664096 Oil and gas water heater May. 12, 1987
4549525 Oil and gas water heater Oct. 29, 1985
4509499 Energy efficient damper for a furnace Apr. 9, 1985
4487137 Auxiliary exhaust system Dec. 11, 1984
4460121 Thermally controlled vent damper Jul. 17, 1984
4452184 Boiler draft control device Jun. 5, 1984
4449512 Energy efficient damper for a furnace May. 22, 1984
4443181 Draft control system Apr. 17, 1984
4437454 Mechanical draft controller with vent damper Mar. 20, 1984
4422440 Automatic draft controller Dec. 27, 1983
4403599 Spillage damper for a combustion system Sep. 13, 1983
4384672 Draft limiting device May. 24, 1983
4341344 Automatic draft controller Jul. 27, 1982
4329967 Adjustable flue control for furnaces May. 18, 1982
4301785 Adjustable flue control for furnaces Nov. 24, 1981
4276871 Flue damper and draft regulator Jul. 7, 1981
4270894 Combination flue and vent damper Jun. 2, 1981
4259943 Fuel economizer Apr. 7, 1981
4088113 Wood burning automatic swimming pool heater May. 9, 1978
4059061 Waste burner overfire draft system Nov. 22, 1977
3987785 Energy saving device Oct. 26, 1976
3957001 Furnace implosion door May. 18, 1976
3951335 Oven stack action control Apr. 20, 1976
3941067 Barometric draft regulator Mar. 2, 1976











 
 
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