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Class Information
Number: 126/285R
Name: Stoves and furnaces > Dampers
Description:










Sub-classes under this class:

Class Number Class Name Patents
126/286 Distance operating devices 45
126/285B Electric 57
126/287.5 Fusible release 25
126/285A Slide 47
126/292 Stovepipe 47
126/289 Stove 40
126/285.5 Timer-controlled 7


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8505529 Alternate intake apparatus Aug. 13, 2013
8302594 Air control regulator for combustion chamber Nov. 6, 2012
8196552 System and method to reduce standby energy loss in a gas burning appliance Jun. 12, 2012
8191546 Flue tuning and emissions savings system Jun. 5, 2012
8113823 Apparatus and method for controlling a damper in a gas-fired appliance Feb. 14, 2012
8079358 Air control regulator for combustion chamber Dec. 20, 2011
7699237 Method for controlling the exhaust flow from a cooking chamber of a baking oven Apr. 20, 2010
7665458 Overfire air tube damper for boiler and method for regulating overfire air Feb. 23, 2010
7472699 Damper regulator assembly Jan. 6, 2009
7325541 Adjustable primary air supply for wood burning device Feb. 5, 2008
6546897 Thermodynamically activated flue damper Apr. 15, 2003
6497230 Air port damper Dec. 24, 2002
6308701 Combustion system Oct. 30, 2001
6257155 Curved blade by-pass damper with flow control Jul. 10, 2001
6213117 Motorized insulated damper assembly for furnace systems Apr. 10, 2001
6041770 Bi-metallic control device Mar. 28, 2000
6041767 Baking oven devaporation Mar. 28, 2000
6035849 Damper clip extension Mar. 14, 2000
6029648 Outside wood-burning furnace Feb. 29, 2000
5911217 Internally mounted flue damper with exterior free-standing damper drive Jun. 15, 1999
5732692 Vent damper Mar. 31, 1998
5575274 Gas log fireplace system Nov. 19, 1996
5398669 Explosion dampener Mar. 21, 1995
5346126 Device for controlling heating efficiency of water heater Sep. 13, 1994
5259411 Flow control Nov. 9, 1993
5255665 Power vent blower assembly for gas water heater Oct. 26, 1993
5195883 Flue gas recirculation system with fresh air purge for burners Mar. 23, 1993
4928668 Fireplace damper indicator May. 29, 1990
4880376 Method and apparatus for monitoring and calibrating damper position Nov. 14, 1989
4838481 Draft control arrangement for venting of combustion apparatus Jun. 13, 1989
4836184 Method for fuel economy Jun. 6, 1989
4777932 Counterweight static pressure-air flow damper assembly Oct. 18, 1988
4723533 Combustion air vent with automatic lock Feb. 9, 1988
4711626 Damper mounting assembly Dec. 8, 1987
4705928 Damper drive in microwave heating appliance Nov. 10, 1987
4699121 Fuel saving device Oct. 13, 1987
4691689 One piece adjustable damper Sep. 8, 1987
4646715 Extension apparatus for damper control shaft Mar. 3, 1987
4643862 Refractory stove damper with catalytic effect Feb. 17, 1987
4637300 Filter assembly for an exhaust stack Jan. 20, 1987
4635616 Fireplace Jan. 13, 1987
4550668 Combustor unit for woodburning stove Nov. 5, 1985
4545308 Apparatus for regulating airflow to a chemical recovery boiler Oct. 8, 1985
4538980 Positive opening damper for combustion appliance Sep. 3, 1985
4533439 Apparatus and method of using a fuel gas regulator for a coke oven battery Aug. 6, 1985
4530346 Mechanical thermostat having proportional control for a solid fuel-burning stove Jul. 23, 1985
4526160 Apparatus for controlling flow of combustion products Jul. 2, 1985
4512330 Fireplace screen Apr. 23, 1985
4509499 Energy efficient damper for a furnace Apr. 9, 1985
4497310 Flue box with adjustable counterbalance cap Feb. 5, 1985

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