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Class Information
Number: 219/491
Name: Electric heating > Heating devices > With power supply and voltage or current regulation or current control means > Automatic regulating or control means > Combined (e.g., electromechanical and thermal)
Description: Subject matter wherein the automatic control structure includes at least two or more means each of which operates independently and on a different principle. An example of the devices to be found in this subclass comprises mechanical timing means and thermally responsive thermostatic means.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7600468 |
Relay switch for toaster |
Oct. 13, 2009 |
| 7589299 |
Electronic power control for cooktop heaters |
Sep. 15, 2009 |
| 7554062 |
Retractable display unit |
Jun. 30, 2009 |
| 7507937 |
Electronic power control for cooktop heaters |
Mar. 24, 2009 |
| 7500453 |
Boiler control unit |
Mar. 10, 2009 |
| 7498546 |
Detachable breakaway power supply source |
Mar. 3, 2009 |
| 7454308 |
System for detection of waterlogging in steam heating coils |
Nov. 18, 2008 |
| 7441713 |
Tamper resistant temperature dial and associated method of use |
Oct. 28, 2008 |
| 7432477 |
Set-back control for both HVAC and water heater via a single programmable thermostat |
Oct. 7, 2008 |
| 7417209 |
Recording disk drive with reduced noise thermal flyheight control |
Aug. 26, 2008 |
| 7402780 |
Thermostat for a heat pump or conventional heating system |
Jul. 22, 2008 |
| 7339141 |
System and method for monitoring heat seal devices |
Mar. 4, 2008 |
| 7253379 |
High voltage circuit breaker with cooling |
Aug. 7, 2007 |
| 7247820 |
Heat sink and information processing device |
Jul. 24, 2007 |
| 7208704 |
Heating device with thermostat switch |
Apr. 24, 2007 |
| 7193188 |
Temperature control system for controlling heat treatment of metals, that is heating, soaking and cooling by a single frequency converter |
Mar. 20, 2007 |
| 7151240 |
Bi-directional tamper resistant temperature dial |
Dec. 19, 2006 |
| 7148453 |
Control unit with thermal protection and an electrical heating device comprising the control unit |
Dec. 12, 2006 |
| 7145107 |
Tamper resistant temperature dial utilizing deflection pins |
Dec. 5, 2006 |
| 6988897 |
Detachable breakaway power supply source |
Jan. 24, 2006 |
| 6960745 |
Electronic control circuit |
Nov. 1, 2005 |
| 6940051 |
Electric circuit for portable heater |
Sep. 6, 2005 |
| 6894253 |
Device for controlling the service loads of an electric household appliance, in particular a refrigerator |
May. 17, 2005 |
| 6884973 |
Heating pad controller with multiple position switch and diodes |
Apr. 26, 2005 |
| 6867395 |
Variable flow thermostat and method for variably controlling engine temperature |
Mar. 15, 2005 |
| 6844530 |
Thaw-server system for convection cooking appliance |
Jan. 18, 2005 |
| 6727477 |
Temperature controller |
Apr. 27, 2004 |
| 6670585 |
Humidity cabinet with automatic fluid fill system |
Dec. 30, 2003 |
| 6624395 |
Switch control device and method, and heating cooker having the control device |
Sep. 23, 2003 |
| 6467326 |
Method of riveting |
Oct. 22, 2002 |
| 6414285 |
Thermal protector |
Jul. 2, 2002 |
| 6313445 |
Control for an electrical kitchen appliance with power interruption off feature |
Nov. 6, 2001 |
| 6310331 |
Circuit configuration for driving an ignition coil |
Oct. 30, 2001 |
| 6294767 |
Dishwasher |
Sep. 25, 2001 |
| 6191398 |
Dry bath temperature control and method |
Feb. 20, 2001 |
| 6184503 |
Riveter |
Feb. 6, 2001 |
| 6180928 |
Rare earth metal switched magnetic devices |
Jan. 30, 2001 |
| 5688422 |
Programmable fan control method and apparatus for use in a food oven |
Nov. 18, 1997 |
| 5585024 |
Protecting device for protecting an electronic equipment in order to use the electronic equipment under a hostile environment |
Dec. 17, 1996 |
| 5582756 |
Heater control device in injection molding machine |
Dec. 10, 1996 |
| 5543602 |
Method for the storage and controlled supply of electric energy for discontinuous loads in steelworks |
Aug. 6, 1996 |
| 5510598 |
Electro-thermally actuated switch |
Apr. 23, 1996 |
| 5489765 |
Electrical heating system with air-driven electrical generator |
Feb. 6, 1996 |
| 5455887 |
Coffee-maker |
Oct. 3, 1995 |
| 5420466 |
Automatic freeze protector |
May. 30, 1995 |
| 5357082 |
Apparatus for providing visual indication in an electric cooking appliance |
Oct. 18, 1994 |
| 5349163 |
Method of automatically cooking food by detecting the amount of gas or smoke being exhausted from a cooking device during cooking |
Sep. 20, 1994 |
| 5332886 |
Sensor correcting temperature regulator for electric heating apparatuses |
Jul. 26, 1994 |
| 5304782 |
Protection circuit for electric toaster |
Apr. 19, 1994 |
| 5300757 |
Cooking apparatus providing accurate control of cooking process and capability for specifying hardness degree of cooked food |
Apr. 5, 1994 |
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