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| Number | Title | Issue Date |
| 8153933 | Welding control apparatus and method The present invention provides a welding control apparatus including: a droplet separation detecting unit that detects separation of a droplet from a tip end of welding wire; and a waveform generator that alternately generates a first pulse for separating the drople... | 04/10/2012 |
| 8080763 | Method of controlling arc welding and welding apparatus A wire feeding speed is decreased to a level lower than a base wire feeding speed in a short-circuiting period, and set to the base wire feeding speed in an arcing period. During the arcing period, a welding current is increased to a predetermined peak value by mean... | 12/20/2011 |
| 7842903 | Short arc welding system A welding system for performing a short arc welding process between a advancing wire electrode and a workpiece. The system comprises a power source with a controller for creating a current pulse introducing energy into the electrode to melt the end of the electrode ... | 11/30/2010 |
| 7598475 | Arc welding control method and arc welding machine An arc welding control method for repeating alternately a short circuit period allowing a welding wire to short circuit with respect to a member to be welded and an arc period allowing arc recurrence and arc discharge to thereby weld the member to be welded, in whic... | 10/06/2009 |
| 7495193 | Pipe seam tack welding methods and apparatus using modified series arc welding Welders and methods are presented for short-circuit arc welding a workpiece using a modified series arc welding configuration with two electrodes via a sequence of welding cycles, in which each cycle includes an arc condition a short-circuit condition, wherein one o... | 02/24/2009 |
| 7414222 | Method and apparatus for pulse and short circuit arc welding A method and apparatus for multi process welding includes providing a controlled short circuit output and a pulse output in response to a user selection across a workpiece output stud and a torch output stud. ... | 08/19/2008 |
| 7411156 | Electric arc welding system An electric arc welding system for creating a first AC welding arc with a first current waveform between a first electrode and a workpiece by a first power supply and a second AC welding arc with a second current waveform between a second electrode and a workpiece b... | 08/12/2008 |
| 7397015 | Metal cored electrode for open root pass welding A method and apparatus of forming a root bead in a gap between spaced ends of at least one workpiece. The gap includes an open root. A metal cored electrode having a metal sheath and core materials is used to for the root bead in the open root. The core materials in... | 07/08/2008 |
| 7385159 | Output stage for an electric arc welder An auxiliary OCV boost circuit for the power source of an electric arc welder to perform a welding process between an electrode and a workpiece, which power source has a main positive voltage output with a first voltage and a main negative voltage output with a seco... | 06/10/2008 |
| 7358459 | Electric arc welder system with waveform profile control An electric arc welder for creating a succession of AC waveforms between an electrode and workpiece by a power source comprising an high frequency switching device for creating individual waveforms in the succession of waveforms. Each of the individual waveforms has... | 04/15/2008 |
| 7351933 | Method and apparatus for controlling a welding system A method and apparatus for controlling a welding-type power supply includes providing a current wave form having an arc current portion and a short circuit current portion. An arc state is entered by retracting a welding wire, and a short circuit state is entered by... | 04/01/2008 |
| 7335853 | Method for orbital welding using a pulsed current A method for the orbital welding of tubular elements held in abutment comprising the steps of striking an arc at a strike point with an orbital welder between an electrode and a seam formed by a first tubular element and a second tubular element, held in abutment wi... | 02/26/2008 |
| 7335852 | Method and apparatus for welding A method and apparatus for MIG welding is disclosed. When in an ac mode the output is unbalanced, or the balance may be controlled. The balance may be controlled to provide a desired deposition rate and /or to obtain a desired dilution. The frequency may be any freq... | 02/26/2008 |
| 7304269 | Pulse welder and method of using same An electric arc welder for performing a pulse welding process by a current between an advancing electrode and workpiece where the welder comprises a short detecting circuit for creating a short signal upon occurrence of a short circuit between the advancing electrod... | 12/04/2007 |
| 7301123 | Method for modifying or producing materials and joints with specific properties by generating and applying adaptive impulses a normalizing energy thereof and pauses therebetween A method of impulse treatment which modifies at least one specified property of a material or object (such as a welded joint), or produces a material or object with at least one specified physical, mechanical or structural property, by adaptively controlling an impu... | 11/27/2007 |
| 7288741 | Arc welder An arc welder comprising: a rectifier circuit 2 which rectifies an alternating current 1 to a direct current; an inverter circuit 3; a transformer 4; a second rectifier circuit 5 which rectifies an output of the transformer 4 | 10/30/2007 |
| 7282668 | Electric arc welding system An electric arc welding system and method for creating a first AC welding arc with a first current waveform between a first electrode and a workpiece by a first power supply and a second AC welding arc with a second current waveform between a second electrode and a ... | 10/16/2007 |
| 7271365 | System and method for pulse welding Systems and methods are provided for pulse welding, in which a welding signal is provided to an electrode in series of pulse welding cycles, where the amount of energy applied to the electrode in each cycle is determined and a pulse is provided to initiate a transfe... | 09/18/2007 |
| 7262387 | Method and apparatus for arc welding with arc control A method and apparatus for providing welding power with an arc-width control is disclosed. The power supply includes a power circuit that provides a welding output characterized by a plurality of welding output parameters, and the power circuit receives at least one... | 08/28/2007 |
| 7256368 | Welding and tack welding method involving the use of a non-fusing electrode The invention relates to a welding method involving the use of a non-fusing electrode (12) according to which the electrode (12) is provided with power from a power source once the arc (11) between the electrode (12) and the workpieces ( | 08/14/2007 |
| 7235760 | AC pulse arc welding method In accordance with an AC pulse arc welding method, a periodic welding current is applied, that includes, for a pulse cycle, negative current in electrode negative polarity and positive current in electrode positive polarity. Then, a negative current rate is set by a... | 06/26/2007 |
| 7205503 | Remotely controlled welding machine The present invention is directed to a remotely controlled welding machine. A remote control uses the welding circuit to transfer information to a welding power source. The information to be communicated to the power source includes welding power source output comma... | 04/17/2007 |
| 7183516 | System and method for welding with multiple arcs A system and method for welding with a first and second arc between a first and second electrode, respectively, and a common workpiece, where each of the electrodes is driven by a single power source, where there is a first inductor connected in series with the firs... | 02/27/2007 |
| 7173214 | Electric arc pulse welder with short circuit control An electric arc welder with a waveform generator controlled to create a welding process involving current flow between an electrode and a workpiece wherein the welding process comprises a succession of pulse waveforms, each having a current ramp up portion, a peak c... | 02/06/2007 |
| 7166817 | Electric ARC welder system with waveform profile control for cored electrodes An electric arc welder for creating a welding process in the form of a succession of AC waveforms between a particular type of cored electrode, with a sheath and core, and a workpiece by a power source comprising an high frequency switching device for creating the i... | 01/23/2007 |
| 7166818 | Tandem electrode welder and method of welding with two electrodes An electric arc welding apparatus comprising at least a first consumable electrode and a second consumable electrode movable in unison along a welding path between the edges of two adjacent, mutually grounded plates, a first power supply for passing a first welding ... | 01/23/2007 |
| 7148449 | Electric ARC welding system An electric arc welding system for creating a first AC welding arc with a first current waveform between a first electrode and a workpiece by a first power supply and a second AC welding arc with a second current waveform between a second electrode and a workpiece b... | 12/12/2006 |
| 7145101 | Pulse arc welding output control method and arc length variation pulse arc welding output control method An output control method is provided for a pulse arc welding in which a welding current flows for one pulse period consisting of a peak period with a flow of a peak current and a base period with a flow of a base current. External characteristics of a welding power ... | 12/05/2006 |
| 7138601 | Method and apparatus for arc welding with arc control A method and apparatus for providing welding power with an arc-width control is disclosed. The power supply includes a power circuit that provides a welding output characterized by a plurality of welding output parameters, and the power circuit receives at least one... | 11/21/2006 |
| 7132623 | Luminescence sensing system for welding A method and apparatus can adaptively control a pulsed power arc welding process. A trainable system can recognize an empirical transfer mode from a signal emitted during an arc welding pulse and determine a pulsed power parameter set to produce a modified transfer ... | 11/07/2006 |
| 7129443 | Method and apparatus for welding with CV control A method and apparatus for welding is disclosed. The output is preferably a cyclical CV MIG output, and each cycle is divided into segments. An output parameter is sampled a plurality of times within one or more of the segments. The CV output is controlled within th... | 10/31/2006 |
| 7109439 | Short circuit arc welder and method of controlling same An electric arc welder operated to perform a short circuit welding process between an electrode and a workpiece, where the process comprises a succession of alternate short circuit conditions and arc conditions, with a first current waveform during the short circuit... | 09/19/2006 |
| 7109437 | Electric ARC welder with background current An electric arc welder comprising a power source driven by a main input transformer with a secondary winding creating an output pulsating current across the electrode and workpiece of a welding operation is provided with a background current circuit including a full... | 09/19/2006 |
| 7105773 | Electric arc welder An electric arc welder for depositing weld metal along a groove between two edges of a metal workpiece where the welder comprises a first electrode driven by a first wire feeder toward a point in said groove, a second electrode driven by a second wire feeder toward ... | 09/12/2006 |
| 7105772 | Arc welding system and method A welder using a circuit or method of changing polarity of an AC welding current comprising: the generation of a polarity changing signal, commanding a change in the polarity of the current a given time after generation of the polarity changing signal and reducing t... | 09/12/2006 |
| 7102099 | Method and apparatus for feeding wire to a welding arc A method and apparatus for feeding wire in a welding system include one or more motors disposed adjacent the wire to drive it. A wire feed motor is also disposed along the wire path, and is closer to the source of wire than the torch, and closer to the source than t... | 09/05/2006 |
| 7102870 | Systems and methods for managing battery power in an electronic disabling device An electronic disabling device includes first and second electrodes positionable to establish first and second spaced apart contact points on a target having a high impedance air gap existing between at least one of the electrodes and the target. The power supply ge... | 09/05/2006 |
| 7102100 | Method used in gas-shielded metal-arc welding The invention relates a method for gas-shielded metal-arc welding during the re-strike during the welding process. It is object of the invention to provide a gas-shielded metal-arc welding method to permit as low an energy intake as possible in the short-circuit pha... | 09/05/2006 |
| 7091446 | Electric arc welding system An electric arc welding system and method for creating a first AC welding arc with a first current waveform between a first electrode and a workpiece by a first power supply and a second AC welding arc with a second current waveform between a second electrode and a ... | 08/15/2006 |
| 7091445 | Electric arc welder and method for controlling the welding process of the welder Electric arc welder (10) performs a given weld process with selected current waveform performed between electrode (24) and workpiece (26). Welder (10) includes a controller with a digital processor (30), sensor (44) for read... | 08/15/2006 |
