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Class Information
Number: 219/488
Name: Electric heating > Heating devices > With power supply and voltage or current regulation or current control means > With voltage limitation, conversion, or adapting means
Description: Subject matter including means whereby a supply voltage of a first value may be maintained within given limits, may be converted to a second different value or means whereby a heating device adapted to operate on an alternating voltage may be adapted to operate on a D.C. voltage or vice versa.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7534978 |
Process chamber of an installation for the thermal treatment of printed circuit boards |
May. 19, 2009 |
| 7387114 |
Heating device for a fluid line and method of manufacture |
Jun. 17, 2008 |
| 7323664 |
Heating system |
Jan. 29, 2008 |
| 7081601 |
Voltage selection mode for a cooking appliance |
Jul. 25, 2006 |
| 7002114 |
Methods and apparatus for a variable resistor configured to compensate for non-linearities in a heating element circuit |
Feb. 21, 2006 |
| 6875955 |
Thermal activation device for heat-sensitive self-adhesive sheet and a printer assembly |
Apr. 5, 2005 |
| 6692518 |
Patient temperature control system |
Feb. 17, 2004 |
| 6642486 |
Method and apparatus for replicating heat profile of infrared oven |
Nov. 4, 2003 |
| 6441352 |
Apparatus for electrically heat welding thermoplastic fittings and method of using the same |
Aug. 27, 2002 |
| 6271505 |
Field conversion electric water heater |
Aug. 7, 2001 |
| 5723846 |
Multiprobe intelligent diagnostic system for food-processing apparatus |
Mar. 3, 1998 |
| 5628928 |
Method for reducing the potential difference in an electrically heatable converter by connecting the strip heater to corrugated strip with an electrical conductor |
May. 13, 1997 |
| 5607610 |
Compact protector |
Mar. 4, 1997 |
| 5416300 |
Electric igniter actuator with network voltage clocking to pass only a portion of the wave trains to the igniter |
May. 16, 1995 |
| 4742210 |
Electric heating apparatus having a universal electrical connector |
May. 3, 1988 |
| 4731519 |
Curling iron adapted to provide uniform heat when used with either domestic or foreign voltages |
Mar. 15, 1988 |
| 4581522 |
Electrical heating system including a mesh heating element |
Apr. 8, 1986 |
| 4439666 |
Electrical heating system |
Mar. 27, 1984 |
| 4267430 |
Dual-voltage electric hair curling apparatus and vanity case therefore |
May. 12, 1981 |
| 4238672 |
Temperature control circuitry |
Dec. 9, 1980 |
| 4217483 |
Terminal block for single phase or three phase wiring of an immersion heater assembly and methods of wiring |
Aug. 12, 1980 |
| 4065659 |
Food processing oven |
Dec. 27, 1977 |
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