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Class Information
Number: 219/668
Name: Electric heating > Inductive heating > With power supply system > Power switching > With protection
Description: Subject matter wherein an arrangement is provided to prevent damage to the power switching device.










Patents under this class:

Patent Number Title Of Patent Date Issued
8617472 System for protecting circuitry in high-temperature environments Dec. 31, 2013
8502123 Apparatus and method to protect half or full bridge circuit including first switching unit and second switching unit in image forming apparatus performing induction heating Aug. 6, 2013
8064233 Power supply regulating apparatus, semiconductor manufacturing apparatus, method for controlling power to heater, and method for manufacturing semiconductor device Nov. 22, 2011
7825357 Power supply, image forming apparatus, and electric current supply method Nov. 2, 2010
7713471 System for protecting circuitry in high-temperature environments May. 11, 2010
7624597 Insulation shielding for glass fiber making equipment Dec. 1, 2009
7573007 Power supply, image forming apparatus, and electric current supply method Aug. 11, 2009
7339143 Expanding system using plasma discharge Mar. 4, 2008
7157674 Induction heater with controlled current to heating coil Jan. 2, 2007
7075044 Induction heating cooking apparatus, operation of which is interrupted by container eccentricity Jul. 11, 2006
7049564 Induction heating device May. 23, 2006
7041946 Energization cycle counter for induction heating tool May. 9, 2006
7021084 Insulation shielding for glass fiber making equipment Apr. 4, 2006
7019270 System for reducing noise from a thermocouple in an induction heating system Mar. 28, 2006
7009159 Induction heating apparatus having electrostatic shielding member Mar. 7, 2006
6965098 Energization cycle counter for induction heating tool Nov. 15, 2005
6956189 Alarm and indication system for an on-site induction heating system Oct. 18, 2005
6861626 Induction heating roller device for use in image forming apparatus Mar. 1, 2005
6815650 Energization cycle counter for induction heating tool Nov. 9, 2004
6806447 Spatula induction heating apparatus Oct. 19, 2004
6801443 Power supply with snubber circuit Oct. 5, 2004
6713737 System for reducing noise from a thermocouple in an induction heating system Mar. 30, 2004
6590190 Induction system and safe armature Jul. 8, 2003
6472748 System and method for providing MMIC seal Oct. 29, 2002
6359269 Heating device, image forming apparatus, and electric-power control method Mar. 19, 2002
5880436 Fail-safe convection oven assembly Mar. 9, 1999
5397878 Powder transistor driving circuit of electromagnetic induction heating device Mar. 14, 1995
4962292 High-frequency heating apparatus having digital controlled inverter Oct. 9, 1990
4908489 Induction heating driver circuit Mar. 13, 1990
4870239 Induction heater for drums Sep. 26, 1989
4760231 Noise filter for electric apparatus Jul. 26, 1988
4757177 High-frequency induction heating system with circuit protective feature Jul. 12, 1988
4701588 Oscillation control circuit of an induction heating apparatus Oct. 20, 1987
4638138 High frequency inverter circuit for melting and induction heating Jan. 20, 1987
4599504 Induction heating apparatus with protection against power interruption Jul. 8, 1986
4555608 Inverter device for induction heating Nov. 26, 1985
4370703 Solid state frequency converter Jan. 25, 1983
4234917 Commutation failure detection and restoration for SCR frequency converters Nov. 18, 1980
4112286 Power circuit for induction heating Sep. 5, 1978
4095076 Protective device for induction heating apparatus Jun. 13, 1978
4058696 Induction heating apparatus comprising a static converter Nov. 15, 1977
4015084 Protective device for induction heating apparatus Mar. 29, 1977
3978307 Induction heating apparatus with protective circuit arrangement Aug. 31, 1976
3973105 Protective device for induction heating apparatus Aug. 3, 1976











 
 
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