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Browse by Category: Main > Electrical & Energy
Class Information
Number: 219/110
Name: Electric heating > Metal heating (e.g., resistance heating) > For bonding with pressure (e.g., resistance welding) > Systems of current supply > Controlled in response to current, voltage, or temperature
Description: Subject matter which is controlled in response to current in, voltage at or temperature of the workpiece.










Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8653413 Welding power supply with digital control of duty cycle Feb. 18, 2014
8569646 Systems, methods, and apparatuses for monitoring weld quality Oct. 29, 2013
8563891 Welding assembly and method Oct. 22, 2013
8455784 Method and system for welding workpieces Jun. 4, 2013
8455794 Welding power supply with digital control of duty cycle Jun. 4, 2013
8431858 Seam welding method and seam welding apparatus Apr. 30, 2013
8426761 Method of detection of welding workpiece position using movable electrode Apr. 23, 2013
8415582 Method for monitoring and maintaining a resistance welding apparatus Apr. 9, 2013
8357871 Welding assembly and method Jan. 22, 2013
8283591 Welding apparatus and welding method Oct. 9, 2012
8178817 Spot welding tongs for robotic applications in resistance welding of workpieces May. 15, 2012
7759596 Method for controlling weld energy Jul. 20, 2010
7718918 Production or assembly line method of spot welding May. 18, 2010
7655880 Method for monitoring a resistance welding process and device therefor Feb. 2, 2010
7640125 Method for controlling the quality of industrial processes and system therefrom Dec. 29, 2009
7543732 Evaluation method and evaluation apparatus for spot welded portion Jun. 9, 2009
7432466 Method of electrical resistance spot welding Oct. 7, 2008
7388171 Power supply apparatus for welder Jun. 17, 2008
7291803 Method and device to obtain information to evaluate the quality of a resistance welding connection and/or to control or regulate a resistance welding method Nov. 6, 2007
7282663 Forge welding process Oct. 16, 2007
7259349 Method for monitoring the quality of spot welding Aug. 21, 2007
7253632 Method for qualifying joints and contacts of electric circuits Aug. 7, 2007
7247810 Module for resistance welding tongs Jul. 24, 2007
7145097 Method and apparatus for electrical resistance spot welding using electrical servo actuator Dec. 5, 2006
7127438 Method of regulating and controlling a technical process such as spot-welding of metal sheets Oct. 24, 2006
7039500 Multiple arm robot arrangement May. 2, 2006
6920371 Welding system and methodology providing multiplexed cell control interface Jul. 19, 2005
6907318 Multi-station robotic welding assembly Jun. 14, 2005
6906276 Resistance spot welding control device and method Jun. 14, 2005
6903298 Resistance welding control method Jun. 7, 2005
6813538 Welding system Nov. 2, 2004
6795778 System and method for facilitating welding system diagnostics Sep. 21, 2004
6757586 Multiple arm robot arrangement Jun. 29, 2004
6737603 SW micro welder for directly welding enameled wires May. 18, 2004
6728602 Control system for an electric heater Apr. 27, 2004
6697701 Welding system and methodology providing multiplexed cell control interface Feb. 24, 2004
6671952 Method of lead wire connection Jan. 6, 2004
6633016 Resistance welding method Oct. 14, 2003
6627841 Method for designing a weld fixture based on predicted stresses and distortions Sep. 30, 2003
6624379 Method and apparatus for welding a metal fastener to a metal member Sep. 23, 2003
6609033 Field programmable welding controller Aug. 19, 2003
6586701 Resistance welding method and device Jul. 1, 2003
6545243 Dynamic weld power termination for hot-staking armature commutators Apr. 8, 2003
6518536 Joining equipment Feb. 11, 2003
6515251 Welding system and method Feb. 4, 2003
6506997 Spot welding system and method for sensing welding conditions in real time Jan. 14, 2003
6459065 Resistance welding power supply apparatus Oct. 1, 2002
6455802 Resistance welding power supply apparatus Sep. 24, 2002
6444942 Welding control systems Sep. 3, 2002
6423950 Reflow soldering apparatus Jul. 23, 2002

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