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Class Information
Number: 219/510
Name: Electric heating > Heating devices > With current connection and/or disconnection means (e.g., switch) > Automatically operated > Thermally responsive
Description: Subject matter wherein the current connection or disconnection means is responsive to the internal temperature of the heating element, that prevailing within the heated medium or both.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7615724 |
Electric water heater |
Nov. 10, 2009 |
| 7569797 |
Electric liquid-heating |
Aug. 4, 2009 |
| 7301468 |
Method and apparatus for real time monitoring of an electric furnace heating coil |
Nov. 27, 2007 |
| 7293914 |
Temperature detecting heater with indicating structure for aquarium |
Nov. 13, 2007 |
| 7148453 |
Control unit with thermal protection and an electrical heating device comprising the control unit |
Dec. 12, 2006 |
| 7122766 |
Range anti-tip device and method |
Oct. 17, 2006 |
| 7085482 |
Aquarium water heater |
Aug. 1, 2006 |
| 7019270 |
System for reducing noise from a thermocouple in an induction heating system |
Mar. 28, 2006 |
| 6936343 |
Ceramic substrate |
Aug. 30, 2005 |
| 6914514 |
Switch for water boiling appliance such as a kettle |
Jul. 5, 2005 |
| 6909862 |
Printer apparatus having fixing unit with heat controller for controlling temperature of heat-up roller |
Jun. 21, 2005 |
| 6830372 |
Thermal testing control system |
Dec. 14, 2004 |
| 6801117 |
Fault sensing wire and alarm apparatus |
Oct. 5, 2004 |
| 6753511 |
System and method for thermal limiting of the temperature of a cooktop without using a temperature sensor |
Jun. 22, 2004 |
| 6730891 |
Over-temp safety device |
May. 4, 2004 |
| 6512444 |
Fault sensing wire and alarm apparatus |
Jan. 28, 2003 |
| 6495805 |
Method of determining set temperature trajectory for heat treatment system |
Dec. 17, 2002 |
| 6433310 |
Assembly suitable for reading/writing/erasing information on a media based on thermal coupling |
Aug. 13, 2002 |
| 6430364 |
Cooling system for cooling interior of substantially airtight housing |
Aug. 6, 2002 |
| 6310330 |
HVAC heater power and control circuit |
Oct. 30, 2001 |
| 6285012 |
Method and apparatus for thermal limiting of the temperature of a glass-ceramic cooktop |
Sep. 4, 2001 |
| 6229116 |
Heat treatment apparatus |
May. 8, 2001 |
| 6163013 |
Continuous duty direct current heated windshield with ambient temperature limit switch |
Dec. 19, 2000 |
| 6118934 |
Safety protection structure for aquarium heater |
Sep. 12, 2000 |
| 6084218 |
Spa heater temperature control circuit |
Jul. 4, 2000 |
| 6057529 |
Combination temperature sensor, warning light sensor and light indicator for heating elements |
May. 2, 2000 |
| 5968395 |
Bistable actuator with two thermal actuating elements electrically operated independently of one another or multiposition setting of the device |
Oct. 19, 1999 |
| 5938984 |
Temperature regulating method of a humidifier according to a surrounding temperature |
Aug. 17, 1999 |
| 5856654 |
Temperature control and safety device associated with a heating element of a glass ceramic cooking hob, arranged to prevent overheating thereof |
Jan. 5, 1999 |
| 5796076 |
Sauna heater control |
Aug. 18, 1998 |
| 5750960 |
Device for heating and maintaining a constant temperature in a liquid, in particular the water of aquariums |
May. 12, 1998 |
| 5744786 |
Automatic cooking apparatus having turntable and infrared temperature sensor |
Apr. 28, 1998 |
| 5740313 |
Light beam heating apparatus |
Apr. 14, 1998 |
| 5702626 |
Automatic cooking controlling apparatus and method employing a narrow viewing angle of an infrared absorptive thermopile sensor |
Dec. 30, 1997 |
| 5667710 |
Electrical heater device for heating the interior of an automobile |
Sep. 16, 1997 |
| 5662025 |
Control circuit for an electric cooker |
Sep. 2, 1997 |
| 5512732 |
Switch controlled, zone-type heating cable and method |
Apr. 30, 1996 |
| 5495551 |
Fast recovery circuit for heat pump water heater |
Feb. 27, 1996 |
| 5489762 |
Appliances having resistive heating elements and thermal protective apparatus used therewith |
Feb. 6, 1996 |
| 5418522 |
System for indicating and signaling the presence of snow and ice |
May. 23, 1995 |
| 5396047 |
Electric heating unit with alternately heated surface areas |
Mar. 7, 1995 |
| 5295531 |
Air conditioner with outside air introduction path |
Mar. 22, 1994 |
| 5265521 |
Toast shade selector |
Nov. 30, 1993 |
| 5254968 |
Electrically conductive plastic speed control resistor for an automotive blower motor |
Oct. 19, 1993 |
| 5255338 |
Heat pump water heater control circuit |
Oct. 19, 1993 |
| 5235159 |
Control system, method of operating a heating apparatus and controlled heating apparatus |
Aug. 10, 1993 |
| 5129033 |
Disposable thermostatically controlled electric surgical-medical irrigation and lavage liquid warming bowl and method of use |
Jul. 7, 1992 |
| 5089688 |
Composite circuit protection devices |
Feb. 18, 1992 |
| 5064997 |
Composite circuit protection devices |
Nov. 12, 1991 |
| 5033107 |
Electric sauna heater |
Jul. 16, 1991 |
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