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Class Information
Number: 236/15BD
Name: Automatic temperature and humidity regulation > Furnace controlled > Commercial furnace controls > Air and fuel control
Description:










Patents under this class:
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Patent Number Title Of Patent Date Issued
8668491 Regulating device for gas burners Mar. 11, 2014
8573504 Furnace Nov. 5, 2013
8141788 Thermostatic control device Mar. 27, 2012
7870854 Closed-loop control system for heating systems Jan. 18, 2011
7735743 Apparatus and methods for variable furnace control Jun. 15, 2010
7161678 Systems and methods for determining the existence of a visible plume from the chimney of a facility burning carbon-based fuels Jan. 9, 2007
6866202 Variable output heating and cooling control Mar. 15, 2005
6059194 Method to control thermal processes May. 9, 2000
5997278 Apparatus for providing an air/fuel mixture to a fully premixed burner Dec. 7, 1999
5918803 Power regulating system for the burner of a heater Jul. 6, 1999
5794549 Combustion optimization system Aug. 18, 1998
5682826 Systems and methods for controlling a draft inducer for a furnace Nov. 4, 1997
5676069 Systems and methods for controlling a draft inducer for a furnace Oct. 14, 1997
5282457 High efficiency gas furnace Feb. 1, 1994
5280756 NO.sub.x Emissions advisor and automation system Jan. 25, 1994
5261811 Burner control system and method Nov. 16, 1993
5122053 Apparatus and method for the combustion of liquid or gaseous fuels Jun. 16, 1992
4998878 Fuel control system for a burner Mar. 12, 1991
4994959 Fuel burner apparatus and a method of control Feb. 19, 1991
4962749 Method of operating a natural gas furnace with propane Oct. 16, 1990
4798531 Process and apparatus for the control of the air and fuel supply to a plurality of burners Jan. 17, 1989
4784580 Airflow control system Nov. 15, 1988
4770627 Combustion control system for oil burner Sep. 13, 1988
4749122 Combustion control system Jun. 7, 1988
4742783 Incinerator combustion air control May. 10, 1988
4737103 Fresh air monitoring and controls relating thereto Apr. 12, 1988
4708636 Flow sensor furnace control Nov. 24, 1987
4706881 Self-correcting microprocessor control system and method for a furnace Nov. 17, 1987
4688547 Method for providing variable output gas-fired furnace with a constant temperature rise and efficiency Aug. 25, 1987
4676734 Means and method of optimizing efficiency of furnaces, boilers, combustion ovens and stoves, and the like Jun. 30, 1987
4640678 Dual-valve air-gas controller Feb. 3, 1987
4635567 Monitoring of burner operation Jan. 13, 1987
4631022 Heat recuperator with compensator for pressure operated fuel regulator Dec. 23, 1986
4585161 Air fuel ratio control system for furnace Apr. 29, 1986
4583936 Frequency modulated burner system Apr. 22, 1986
4576570 Automatic combustion control apparatus and method Mar. 18, 1986
4553924 Jackshaft controlled boiler combustion control system Nov. 19, 1985
4551088 Combustion control system Nov. 5, 1985
4547144 Fuel gas control Oct. 15, 1985
4533315 Integrated control system for induced draft combustion Aug. 6, 1985
4519540 Sealed gas heater with forced draft and regulation by microprocessor May. 28, 1985
4517906 Method and apparatus for controlling auxiliary fuel addition to a pyrolysis furnace May. 21, 1985
4509913 Device for controlling the air supply for a gas burner Apr. 9, 1985
4498861 Method for controlling combustion in industrial furnaces Feb. 12, 1985
4493635 Oxygen-enriched air ratio control device for combustion apparatus Jan. 15, 1985
4486166 Jackshaft controlled boiler combustion control system Dec. 4, 1984
4479774 Combustion control system Oct. 30, 1984
4465456 Variable firing rate burner Aug. 14, 1984
4421473 Apparatus for operating a burner at an optimal level Dec. 20, 1983
4408569 Control of a furnace Oct. 11, 1983

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