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Class Information
Number: 122/14.1
Name: Liquid heaters and vaporizers > Stand boiler (e.g., water heater, etc.) > And condition responsive feature
Description: Subject matter and means to sense a state or change in the state of the stand boiler or the water heated by the stand boiler to effect a change in the operation of the stand boiler or the heated water.










Sub-classes under this class:

Class Number Class Name Patents
122/14.2 Controls burner 81
122/14.3 Having water flow control feature 70


Patents under this class:
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Patent Number Title Of Patent Date Issued
8485137 Combustion control device Jul. 16, 2013
8365686 Malfunction detection device for hot water supplier Feb. 5, 2013
8292616 Burner Oct. 23, 2012
8152995 Arrangements to reduce hardness of water in a hot water system Apr. 10, 2012
8047163 Gas water heater with harmful gas monitoring and warning functions and the method of monitoring and warning Nov. 1, 2011
7996182 Water heater monitor/diagnostic display apparatus Aug. 9, 2011
7849821 Burner flashback detection and system shutdown apparatus Dec. 14, 2010
7818095 Water heater monitor/diagnostic display apparatus Oct. 19, 2010
7607408 Water heater burner clogging detection and shutdown system Oct. 27, 2009
7392766 Temperature and pressure relief apparatus for water heater Jul. 1, 2008
7387721 Apparatus and system for removing scale causing chemicals in hot water systems Jun. 17, 2008
7195176 Temperate water supply system Mar. 27, 2007
7013841 Differently configured fuel-fired water heaters constructed from identical production platforms Mar. 21, 2006
7001524 Method for removing scale causing chemicals in hot water systems Feb. 21, 2006
7000847 Quick recovery water heater Feb. 21, 2006
6994056 Water heater having a low NOx burner integrated with FVIR platform Feb. 7, 2006
6920843 Programmable water heater Jul. 26, 2005
6880493 Gas water heater and method of operation Apr. 19, 2005
6877462 Sensorless flammable vapor protection and method Apr. 12, 2005
6877461 Portable instant hot water heater Apr. 12, 2005
6840198 Air-proportionality type boiler Jan. 11, 2005
6807925 Explosion-proof hot water heater with unsealed fuel combustion chamber Oct. 26, 2004
6776125 Methods of operating a fuel-fired heating apparatus Aug. 17, 2004
6761134 Water heater having self-powered low NOx burner/fuel-air delivery system Jul. 13, 2004
6715451 Fuel-fired heating appliance with combustion air shutoff system having frangible temperature sensing structure Apr. 6, 2004
6662757 Explosion proof gas-fired water heater Dec. 16, 2003
6543393 Fire suppressing water heater system Apr. 8, 2003
6497200 Fuel-fired heating appliance with combustion chamber temperature-sensing combustion air shutoff system Dec. 24, 2002
6445880 Water heating system with automatic temperature control Sep. 3, 2002
6418882 Power vented, fuel fired water heater with soft ignition system Jul. 16, 2002
6401668 Ignition inhibiting gas water heater Jun. 11, 2002
RE37240 Water heater with reduced localized overheating Jun. 26, 2001
6196164 Ignition inhibiting gas water heater Mar. 6, 2001
6167845 Instantaneous water heater Jan. 2, 2001
6116195 Flame traps for water heaters Sep. 12, 2000
6109216 Flammable vapor resistant water heater Aug. 29, 2000
6085700 Heat sensitive air inlets for water heaters Jul. 11, 2000
6041742 Fluid heating and pumping apparatus Mar. 28, 2000
5682841 Variable flow volume control baffle and vent damper Nov. 4, 1997
5596952 Indirect water heater Jan. 28, 1997
5586547 Instantaneous gas water heater Dec. 24, 1996
5531214 Gas vent and burner monitoring system Jul. 2, 1996
5464006 Water heater Nov. 7, 1995
5447125 Heat-activated flue damper actuator Sep. 5, 1995
5429186 Open hot-water heater Jul. 4, 1995
5393221 Heat-activated flue damper actuator Feb. 28, 1995
5279319 Water pressure relief method and system for water heaters Jan. 18, 1994
5239947 Vent damper for gas water heater Aug. 31, 1993
5158446 Combination pressure and temperature limit control for a fuel-fired, forced draft heating appliance combustion product exhaust system Oct. 27, 1992
5115798 Condensate trap May. 26, 1992

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