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Class Information
Number: 219/130.32
Name: Electric heating > Metal heating (e.g., resistance heating) > By arc > Including arc-power supplies > With automatic output control (e.g., shortcircuit, infrared) > Responsive to arc current only
Description: Subject matter wherein the sensed condition pertains to the arc current.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7289862 |
Methods to support process quality and maintenance during control of an industrial process such as welding |
Oct. 30, 2007 |
| 7183516 |
System and method for welding with multiple arcs |
Feb. 27, 2007 |
| 7091445 |
Electric arc welder and method for controlling the welding process of the welder |
Aug. 15, 2006 |
| 6797922 |
Power supply apparatus for welder |
Sep. 28, 2004 |
| 6649869 |
Method and system for welding with paralleled power supplies |
Nov. 18, 2003 |
| 6566625 |
Welding apparatus and method |
May. 20, 2003 |
| 6501049 |
Short circuit arc welder and method of controlling same |
Dec. 31, 2002 |
| 6472633 |
Method and system for welding with paralleled power supplies |
Oct. 29, 2002 |
| 6369350 |
Plasma-arc torch system with pilot re-attach circuit and method |
Apr. 9, 2002 |
| 6291798 |
Electric ARC welder with a plurality of power supplies |
Sep. 18, 2001 |
| 6268587 |
Current feedback device for electric arc welder |
Jul. 31, 2001 |
| 6194681 |
Power supply apparatus for arc-utilizing machine |
Feb. 27, 2001 |
| 6091049 |
Power supply apparatus for use with arc utilizing device |
Jul. 18, 2000 |
| 6051806 |
Power supply apparatus for welders and method of manufacturing same |
Apr. 18, 2000 |
| 5844197 |
Arc retract circuit and method |
Dec. 1, 1998 |
| 5811757 |
Power source including parallel switching circuits and related methods for a welding or cutting system |
Sep. 22, 1998 |
| 5751568 |
Power supply apparatus for arc-utilizing equipment |
May. 12, 1998 |
| 5683602 |
Welding power supply |
Nov. 4, 1997 |
| 5648007 |
Method of performing arc welding between optical fibers |
Jul. 15, 1997 |
| 5570254 |
Method and device for preventing excessive currents in a welding converter |
Oct. 29, 1996 |
| 5528013 |
Method of automatically adjusting welding conditions for an arc welding robot |
Jun. 18, 1996 |
| 5463197 |
Apparatus and method for forming wire bonding ball |
Oct. 31, 1995 |
| 5457300 |
Consumable electrode DC arc welder |
Oct. 10, 1995 |
| 5349157 |
Inverter power supply for welding |
Sep. 20, 1994 |
| 5250786 |
D-C arc welding apparatus |
Oct. 5, 1993 |
| 5220151 |
Power source apparatus for an alternating-current arc welding capable of supplying an alternating-current welding current having any waveform |
Jun. 15, 1993 |
| 5218182 |
Constant current welding power supply with auxilary power source to maintain minimum output current levels |
Jun. 8, 1993 |
| 5149940 |
Method for controlling and synchronizing a welding power supply |
Sep. 22, 1992 |
| 5017756 |
Method and apparatus for preventing chain reaction transistor failure in paralleled transistors |
May. 21, 1991 |
| 4929811 |
Plasma arc torch interlock with disabling control arrangement system |
May. 29, 1990 |
| 4897522 |
Output control circuit for inverter |
Jan. 30, 1990 |
| 4896018 |
Method and apparatus for protecting a power transistor from excessive current flow |
Jan. 23, 1990 |
| 4785149 |
Distributed station welding system |
Nov. 15, 1988 |
| 4716274 |
Distributed station welding system |
Dec. 29, 1987 |
| 4665299 |
Arc welding power source with response delay compensating control |
May. 12, 1987 |
| 4575604 |
Constant potential/constant current automatic control system for air-carbon arc metal removal |
Mar. 11, 1986 |
| 4555612 |
Plasma jet cleaning apparatus and method |
Nov. 26, 1985 |
| 4521671 |
Electronic welding apparatus |
Jun. 4, 1985 |
| 4512513 |
Arc metal spray apparatus and method |
Apr. 23, 1985 |
| 4503316 |
DC Welding power supply system |
Mar. 5, 1985 |
| 4499363 |
DC Power source |
Feb. 12, 1985 |
| 4479046 |
Single power source arc welding apparatus |
Oct. 23, 1984 |
| 4459459 |
Power supply for electric arc welding |
Jul. 10, 1984 |
| 4456808 |
Microprocessor control of welding apparatus |
Jun. 26, 1984 |
| 4456814 |
Arc welding apparatus including function generators for controlling welding parameters |
Jun. 26, 1984 |
| 4450340 |
Arc welder power supply with fail-safe voltage reducing circuit |
May. 22, 1984 |
| 4417129 |
Power source for arc welder |
Nov. 22, 1983 |
| 4410788 |
Power and fluid supply source with multi-function cutting and welding capabilities |
Oct. 18, 1983 |
| 4371776 |
Welding power supply |
Feb. 1, 1983 |
| 4345139 |
Constant current SCR power supply method and system for a welding load |
Aug. 17, 1982 |
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