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Class Information
Number: 236/20R
Name: Automatic temperature and humidity regulation > Closed fluid heaters
Description:
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7387090 |
Method for control of steam quality on multipath steam generator |
Jun. 17, 2008 |
| 7278587 |
Thermal treatment apparatus and thermal treatment method |
Oct. 9, 2007 |
| 7195176 |
Temperate water supply system |
Mar. 27, 2007 |
| 7127905 |
Vapor compression system startup method |
Oct. 31, 2006 |
| 7096828 |
Self cleaning boiler and steam generator |
Aug. 29, 2006 |
| 7090140 |
Method and device for monitoring burners |
Aug. 15, 2006 |
| 7000847 |
Quick recovery water heater |
Feb. 21, 2006 |
| 6981650 |
Pool/spa heater |
Jan. 3, 2006 |
| 6955301 |
Water heater and control |
Oct. 18, 2005 |
| 6918356 |
Method and apparatus for optimizing a steam boiler system |
Jul. 19, 2005 |
| 6880493 |
Gas water heater and method of operation |
Apr. 19, 2005 |
| 6831257 |
Control system for multiple heating towers a method for heating liquids and distributing operating wear amongst a plurality of heating towers |
Dec. 14, 2004 |
| 6728600 |
Distributed appliance control system having fault isolation |
Apr. 27, 2004 |
| 6627858 |
Hot-water supply system |
Sep. 30, 2003 |
| 6571829 |
Gas control valve in water heater |
Jun. 3, 2003 |
| 6375087 |
Method and apparatus for self-programmable temperature and usage control for hot water heaters |
Apr. 23, 2002 |
| 6354511 |
Portable system for heating water |
Mar. 12, 2002 |
| 6293471 |
Heater control device and method to save energy |
Sep. 25, 2001 |
| 6212894 |
Microprocessor control for a heat pump water heater |
Apr. 10, 2001 |
| 6198295 |
Apparatus and method for detecting electrical resistance change in connectors to a remote mounted sensor |
Mar. 6, 2001 |
| 6119949 |
Apparatus and method for providing a multiple option select function |
Sep. 19, 2000 |
| 6059195 |
Integrated appliance control system |
May. 9, 2000 |
| 6057772 |
Apparatus and method for optically sensing liquid level in cooking vessels |
May. 2, 2000 |
| 5988516 |
Solar hot water heating system |
Nov. 23, 1999 |
| 5968393 |
Hot water controller |
Oct. 19, 1999 |
| 5831345 |
Priority relay circuit with timer |
Nov. 3, 1998 |
| 5749327 |
Method for controlling gas supply of a gas boiler |
May. 12, 1998 |
| 5713515 |
Method and system in a fluid heating apparatus for efficiently controlling combustion |
Feb. 3, 1998 |
| 5697551 |
Heating system of the type for apartments or offices in buildings |
Dec. 16, 1997 |
| 5660328 |
Water heater control |
Aug. 26, 1997 |
| 5626287 |
System and method for controlling a water heater |
May. 6, 1997 |
| 5443206 |
Standby loss minimizing controller for boilers with tankless water heaters |
Aug. 22, 1995 |
| 5400962 |
System and method for reduced purge operation of a forced draft burner in a water heater |
Mar. 28, 1995 |
| 5348224 |
Gas flow modulator |
Sep. 20, 1994 |
| 5340019 |
Electronic aquastat in immersible capsule |
Aug. 23, 1994 |
| 5232151 |
Cold zone heat regulation device and method for a deep fat fryer |
Aug. 3, 1993 |
| 5203500 |
Apparatus and method for converting an electric water heater to use gas |
Apr. 20, 1993 |
| 5197665 |
Water heater |
Mar. 30, 1993 |
| 5056712 |
Water heater controller |
Oct. 15, 1991 |
| 5029442 |
Heat feeding apparatus for internal combustion engine having supercharger attached |
Jul. 9, 1991 |
| 5020721 |
Rapid recovery gas hot water heater |
Jun. 4, 1991 |
| 4958765 |
Devices for controlling and regulating the gas supply to the burner of a boiler or similar |
Sep. 25, 1990 |
| 4905894 |
Refrigerant heating type air conditioner |
Mar. 6, 1990 |
| 4901537 |
Solar heat collector system |
Feb. 20, 1990 |
| 4834284 |
Hot water control |
May. 30, 1989 |
| 4832259 |
Hot water heater controller |
May. 23, 1989 |
| 4759497 |
System for heating and storing a liquid |
Jul. 26, 1988 |
| 4750452 |
Water heater |
Jun. 14, 1988 |
| 4738394 |
Integral liquid-backed gas-fired space heating and hot water system |
Apr. 19, 1988 |
| 4737615 |
Energy saving control circuit for hot water heater |
Apr. 12, 1988 |
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