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Class Information
Number: 126/99R
Name: Stoves and furnaces > Hot-air furnaces
Description:










Sub-classes under this class:

Class Number Class Name Patents
126/99D Air baffles 42
126/113 Air moisteners 95
126/114 Casings 21
126/102 Circular radiating drum 4
126/101 Combined with boiler 99
126/100 Combined with cooking stove 6
126/110R Compressed air 334
126/111 Double fire pot 10
126/103 Downdraft 10
126/115 Dust flue 1
126/112 Feeding air 143
126/99C Helical passages 18
126/104R Horizontal combustion chamber 19
126/105R Hot-air equalizers 0
126/106 Internal air chamber 8
126/119 Joints 17
126/116R Liquid or gaseous fuel 225
126/107 Magazine 6
126/99P Pipeless 3
126/117 Preliminary air heater 40
126/118 Radiating flanges 5
126/108 Secondary heating chamber horizontally arranged 16
126/109 Tubular air heater 47
126/99A Tubular heater 55


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8672670 System and method for controlling a furnace Mar. 18, 2014
8561601 Heat exchanger with fastener Oct. 22, 2013
8550066 High efficiency furnace/air handler blower housing with a side wall having an exponentially increasing expansion angle Oct. 8, 2013
8535050 Forced flue type combustion device Sep. 17, 2013
8528538 Warm air furnace Sep. 10, 2013
8479439 Self-contained heating unit for thermal pest control Jul. 9, 2013
8479440 Self-contained heating unit for thermal pest control Jul. 9, 2013
8393318 Heat exchanger Mar. 12, 2013
8074636 Warm air furnace Dec. 13, 2011
8061347 Dual fuel vent free gas heater Nov. 22, 2011
8056553 Condensate pan with condensate trap Nov. 15, 2011
8025049 High efficiency furnace having a blower housing with an enlarged air outlet opening Sep. 27, 2011
8001958 Furnace air handler blower housing with an enlarged air outlet opening Aug. 23, 2011
7766006 Dual fuel vent free gas heater Aug. 3, 2010
7677237 Furnace with integrated blower housing and heat exchanger Mar. 16, 2010
7677238 Furnace with integrated blower housing and heat exchanger Mar. 16, 2010
7631640 Radiant burner Dec. 15, 2009
7100597 Modular burner/blower system and method Sep. 5, 2006
6932079 Radiant energy source systems, devices, and methods capturing, controlling, or recycling gas flows Aug. 23, 2005
6889686 One shot heat exchanger burner May. 10, 2005
6793015 Furnace heat exchanger Sep. 21, 2004
6769425 Fuel-fired furnace with combustion air-cooled draft inducer fan motor Aug. 3, 2004
6684878 Condensate drainage system for an outdoor condensing furnace Feb. 3, 2004
6497570 Gas control assembly Dec. 24, 2002
6494199 Multipoise furnace cabinet Dec. 17, 2002
6491514 Furnace burner box assembly with reduced acoustic emissions Dec. 10, 2002
6474329 Cell panel for furnace Nov. 5, 2002
6470878 Furnace heat exchanger Oct. 29, 2002
6318358 Furnace blower with double sided impeller Nov. 20, 2001
6289685 Air conditioner with combustion heater for refrigerant Sep. 18, 2001
6223740 Fuel-fired furnace with self-cooling draft inducer fan May. 1, 2001
RE37009 Enhanced tubular heat exchanger Jan. 9, 2001
6109254 Clamshell heat exchanger for a furnace or unit heater Aug. 29, 2000
6014966 Heat transfer unit for a furnace exhaust vent Jan. 18, 2000
6006741 Secondary heat exchanger for condensing furnace Dec. 28, 1999
5979433 Heater Nov. 9, 1999
5775318 Forced air condensing furnace and heat exchanger manifold therefor Jul. 7, 1998
5738084 Ventless patio fireplace Apr. 14, 1998
5623988 Polymeric heat exchanger with ceramic material insert Apr. 29, 1997
5560350 High efficiency, forced hot air heater which humidifies and cleans the air Oct. 1, 1996
5531212 Multi oil furnace Jul. 2, 1996
5524606 Air heater Jun. 11, 1996
5494026 Dome connecting structure of external combustion hot stove for blast furnace Feb. 27, 1996
5482027 Partitioned bisector regenerative air heater Jan. 9, 1996
5392761 Blower mounting arrangement for forced air furnace Feb. 28, 1995
5375586 Condensate isolator and drainage system for furnace Dec. 27, 1994
5368010 Multi-position forced air furnace Nov. 29, 1994
5359989 Furnace with heat exchanger Nov. 1, 1994
5341795 Inducer for condensing furnace Aug. 30, 1994
5333598 Unit heater and heat exchanger therefor Aug. 2, 1994

1 2 3










 
 
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