 |
|
 |
| |
 |
|
Class Information
Number: 219/509
Name: Electric heating > Heating devices > With current connection and/or disconnection means (e.g., switch) > Automatically operated
Description: Subject matter wherein the current connection or disconnection function is automatically accomplished as a result of some existing condition within the heated medium or of the heating element itself.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7589299 |
Electronic power control for cooktop heaters |
Sep. 15, 2009 |
| 7554063 |
Heating apparatus |
Jun. 30, 2009 |
| 7475495 |
Dryness sensor for clothes dryer |
Jan. 13, 2009 |
| 7307245 |
Medical item thermal treatment systems and method of monitoring medical items for compliance with prescribed requirements |
Dec. 11, 2007 |
| 7186954 |
Apparatus for detecting abnormal temperature rise associated with a cooking arrangement |
Mar. 6, 2007 |
| 7180036 |
Semiconductor processing temperature control |
Feb. 20, 2007 |
| 6869538 |
Method and apparatus for controlling a medical fluid heater |
Mar. 22, 2005 |
| 6822202 |
Semiconductor processing temperature control |
Nov. 23, 2004 |
| 6794882 |
Rupture detector for windshield assembly |
Sep. 21, 2004 |
| 6777651 |
Cook time control system for convection cooking appliance |
Aug. 17, 2004 |
| 6501050 |
Fuel heating control method and system |
Dec. 31, 2002 |
| 6452501 |
Automatic shut-off and indication device for an electric heating appliance and electric pressing iron comprising such a device |
Sep. 17, 2002 |
| 6225610 |
Use of PTC devices to protect insulated wires in electrical harnesses |
May. 1, 2001 |
| 6107611 |
Method and apparatus for detecting ground faults in a shielded heater wire by sensing electrical arcing |
Aug. 22, 2000 |
| 6080971 |
Fluid heater with improved heating elements controller |
Jun. 27, 2000 |
| 6034359 |
Electrical resistance cooking apparatus with electronic control |
Mar. 7, 2000 |
| 5951897 |
Temperature measuring device for a regulating circuit of an electrical radiant heating appliance |
Sep. 14, 1999 |
| 5940579 |
Capacitive leakage current cancellation for heating panel |
Aug. 17, 1999 |
| 5920366 |
Dynamic multi-contact display heater system |
Jul. 6, 1999 |
| 5844214 |
Power supply cut-off apparatus in a microwave oven |
Dec. 1, 1998 |
| 5844204 |
Device for detection of electric current by micro-leakage |
Dec. 1, 1998 |
| 5828039 |
Method and apparatus for heating chemical used in microelectronic device fabrication |
Oct. 27, 1998 |
| 5821503 |
Conveyor speed control ciruit for a conveyor oven |
Oct. 13, 1998 |
| 5784531 |
Instantaneous fluid heating device and process |
Jul. 21, 1998 |
| 5712451 |
Device for sensing food weight in a microwave oven |
Jan. 27, 1998 |
| 5684759 |
Electronic timer for a coffee maker |
Nov. 4, 1997 |
| 5653904 |
Defogging system for the front and rear windshields of a vehicle |
Aug. 5, 1997 |
| 5595672 |
Automatic power interrupting apparatus for an electric appliance |
Jan. 21, 1997 |
| 5577158 |
Capacitive leakage current cancellation for heating panel |
Nov. 19, 1996 |
| 5554838 |
Hand-held heating tool with improved heat control |
Sep. 10, 1996 |
| 5479558 |
Flow-through tankless water heater with flow switch and heater control system |
Dec. 26, 1995 |
| 5451746 |
Temperature control system for a cooking oven |
Sep. 19, 1995 |
| 5440667 |
OHMIC heater including electrodes arranged along a flow axis to reduce leakage current |
Aug. 8, 1995 |
| 5349160 |
Iron comprising a humidity detector for controlling the heating element and also providing a motion indication |
Sep. 20, 1994 |
| 5321231 |
System for supplying power to an electrically heated catalyst |
Jun. 14, 1994 |
| 5304781 |
Two terminal line voltage thermostat |
Apr. 19, 1994 |
| 5064998 |
Relay control apparatus |
Nov. 12, 1991 |
| 5039842 |
Mold heater moisture detection and dry out apparatus |
Aug. 13, 1991 |
| 4994750 |
Use of capacitance for protecting against overheating of a waterbed heater |
Feb. 19, 1991 |
| RE33343 |
Crack detector for electrically conductive windshield |
Sep. 18, 1990 |
| 4912338 |
Safety system for a gas operated appliance in a vehicle |
Mar. 27, 1990 |
| 4908498 |
Control for delivery of power to heating elements |
Mar. 13, 1990 |
| 4874925 |
Electrically heated hose assembly for conveying electrically conductive liquids |
Oct. 17, 1989 |
| 4860147 |
Shock-protected domestic electrical apparatus |
Aug. 22, 1989 |
| 4853519 |
Heating apparatus for heating in a plurality of heating modes |
Aug. 1, 1989 |
| 4845342 |
Circuit for providing electrical energy to a heatable means |
Jul. 4, 1989 |
| 4833398 |
Electric water heater analyzer |
May. 23, 1989 |
| 4829159 |
Method of optimizing control of plural switched electric loads to reduce switching transients |
May. 9, 1989 |
| 4825047 |
Temperature-responsive controller for waterbed mattress heaters |
Apr. 25, 1989 |
| 4822982 |
Automatic circuit control for electrical resistance cooking apparatus |
Apr. 18, 1989 |
|
|
|
 |
|
 |
|
| |
Randomly Featured Patents |
|
