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Class Information
Number: 373/102
Name: Industrial electric heating furnaces > Arc furnace device > Power supply system
Description: Subject matter including means to provide electric power for the arc.

Sub-classes under this class:

Class Number Class Name Patents
373/103 Cable or cable suspension arrangement 22
373/108 D.c. power 128
373/107 With magnetically influenced arc 27
373/104 With power regulation 84

Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8077754 Pool power control in remelting systems Dec. 13, 2011
8068522 Hyper dispersion pulse compressor for chirped pulse amplification systems Nov. 29, 2011
8023550 Reactance ballast device Sep. 20, 2011
7991039 Electric arc furnace monitoring system and method Aug. 2, 2011
7313160 Regulation system analysis method Dec. 25, 2007
7295593 System and method of minimizing loss of electrical conduction during input of feed material to a furnace Nov. 13, 2007
7257146 System and method for controlling power across multiple electrodes in a furnace Aug. 14, 2007
7212561 System and method for controlling electrical power across multiple furnaces using variable reactors May. 1, 2007
7212562 System and method for controlling total electrical power across multiple furnaces using electrode positioning May. 1, 2007
6980580 Electrode arrangement as substitute bottom for an electrothermic slag smelting furnace Dec. 27, 2005
6758902 Heater arrangement for crystal growth furnace Jul. 6, 2004
6687284 Method and apparatus to facilitate restriking in an arc-furnace Feb. 3, 2004
6608857 Method of controlling the output voltage of a furnace Aug. 19, 2003
6603795 Power control system for AC electric arc furnace Aug. 5, 2003
6421366 Method and device for supplying an electric arc melting furnace with current Jul. 16, 2002
6226313 Power source circuit and its control for three-phase electric arc furnace to reduce flicker May. 1, 2001
6211495 Temperature control system for a thermal reactor Apr. 3, 2001
6157666 Controlled current feed device for electric arc furnace Dec. 5, 2000
6115404 Dynamic control of remelting processes Sep. 5, 2000
6104744 Regulation or control of a fusion process in a three-phase current arc furnace Aug. 15, 2000
6064687 Mobile furnace facility May. 16, 2000
5987052 Method to control the power supply for electric arc furnaces Nov. 16, 1999
5870423 Individual heating element power control for a furnace Feb. 9, 1999
5708677 Arc voltage distribution skewness as an indicator of electrode gap during vacuum arc remelting Jan. 13, 1998
5677925 Power converter device for direct current power supply to an electric arc furnace Oct. 14, 1997
5617447 Method of stabilizing a power supply network against reactive load fluctuations, and a reactive power compensation device Apr. 1, 1997
5610937 Regulation method for a DC arc furnace Mar. 11, 1997
5593608 Temperature control method and apparatus for use in thermal processing equipment Jan. 14, 1997
5583883 Electric arc-furnace stabilization using voltage pulse injection Dec. 10, 1996
5504306 Microprocessor controlled tankless water heater system Apr. 2, 1996
5463653 Power converter device for direct current power supply to an electric arc furnace Oct. 31, 1995
5438588 Direct current-electric arc furnace system Aug. 1, 1995
5410564 Direct current electric furnace for melting metal Apr. 25, 1995
5406581 Control system for electric arc furnace Apr. 11, 1995
5317591 Direct-current arc furnace May. 31, 1994
5292109 Device for coupling the current feed to a metallurgical vessel Mar. 8, 1994
5274663 Direct-current arc furnace plant Dec. 28, 1993
5255285 Feedback control system for the impedance control of an electric arc furnace Oct. 19, 1993
5239554 Direct-arc electric furnace fed with controlled current and method to feed a direct-arc furnace with controlled current Aug. 24, 1993
5204872 Control system for electric arc furnace Apr. 20, 1993
5204873 DC electric arc melting apparatus Apr. 20, 1993
5189682 Method for increasing the efficiency of a direct current electric arc furnace Feb. 23, 1993
5155740 Flicker compensating apparatus for DC arc furnace Oct. 13, 1992
5138629 Direct current electric arc furnace Aug. 11, 1992
5138630 Direct current electric arc furnace Aug. 11, 1992
5115447 Arc furnace electrode control May. 19, 1992
5081640 Method of controlling a temperature of a molten metal Jan. 14, 1992
5050185 Process and apparatus for measuring the instability of an arc in an electrical arc furnace for processing liquid metal Sep. 17, 1991
5012487 Induction melting Apr. 30, 1991
4907244 Electric reduction furnace Mar. 6, 1990

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