Including Arc-power Supplies Patents (Class 219/130.1)
  • Patent number: 10420200
    Abstract: An automated plasma cutting system is provided that includes a positioning system mounted to a support, an automated plasma arc torch mounted to the positioning system, and at least one power supply operatively connected to the automated plasma arc torch. The power supply may provide electrical power and fluid flow to the automated plasma arc torch for operation. The system further includes a controller in communication with the automated plasma arc torch and the power supply, and an auxiliary plasma arc torch operatively connected to the power supply, wherein the power supply provides electrical power and fluid flow to both the automated plasma arc torch and the auxiliary plasma arc torch. The automated plasma arc torch may process the workpiece to generate a set of features, while the auxiliary plasma arc torch may process/cut a residual framework of the workpiece remaining after formation of the set of features.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: September 17, 2019
    Assignee: Victor Equipment Company
    Inventors: Roger Lambert, David A. Tatham, Michael Sawchik, Douglass A. Demers, Jake Brandis, Michael Wolfinger, Nakhleh Hussary, Dirk Ott, Christopher Conway, Daniel Barnett, Thierry Renault, Kevin Horner-Richardson
  • Patent number: 10416701
    Abstract: An electric arc generation device includes an internal combustion engine operatively coupled to a generator, an arc generation power supply powered by the generator, an ECU configured to control a maximum power output level of the engine according to one of a low power routine and a high power routine, and a position signal receiver operatively connected to the ECU. The position signal receiver is configured to receive a position signal, generate current position information based on the position signal, and provide the current position information to the ECU. The ECU is configured to compare the current position information to predetermined region data, and automatically switch from one of the high power routine and the low power routine to a different one of the high power routine and the low power routine based on a result of the comparing, to automatically control the maximum power output level of the engine.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: September 17, 2019
    Assignee: LINCOLN GLOBAL, INC.
    Inventors: Edward A. Enyedy, Bruce John Chantry
  • Patent number: 10391577
    Abstract: A hybrid welding system is provided. In one embodiment, the welding system includes an engine-driven generator, an energy storage device, a contactor, and a controller. The controller may be configured to control delivery of weld power from the generator when a commanded output is below a threshold level, and from both the generator and the energy storage when the commanded output is above the threshold level. Closing of the contactor enables the energy storage device to contribute to weld power during welding operations and to be charged by the generator output independent of charging between weld operations. Additional hybrid welding systems and methods are also disclosed.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: August 27, 2019
    Assignee: Illinois Tool Works Inc.
    Inventors: James F. Ulrich, Allen Raymond Sykes
  • Patent number: 10369653
    Abstract: In embodiments, a welding apparatus includes an automated wire feed mechanism to output wire at a wire feed rate, where the wire is to provide a welding arc to a weld site. The wire feed rate is based at least in part on selected power to be provided to the weld site. Additional embodiments are described and claimed.
    Type: Grant
    Filed: March 31, 2018
    Date of Patent: August 6, 2019
    Inventor: Ammon Nazareth Balaster
  • Patent number: 10343230
    Abstract: Welding-type systems and user interfaces having a color display for displaying physical setup instructions are disclosed. Example interface devices include a process selection input device, a display device, a memory, and a processor. The memory stores weld connection setup graphics and physical welding connections. Each of the plurality of weld connection setup graphics is a graphic of a perspective view of a power supply. The processor, in response to identifying a selected welding process type via the welding process selection input device, displays one of the plurality of the weld connection setup graphics via the display device. The processor detects a physical welding connection made at the power supply, determines, based on the detected physical welding connection, that the detected physical welding connection is incorrect for the selected welding process type, and displays an alert on the display device to indicate an error in the detected physical welding connection.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: July 9, 2019
    Assignee: Illinois Tool Works Inc.
    Inventors: Craig Steven Knoener, Nicholas James Dessart, Emily Rose Mueller
  • Patent number: 10279414
    Abstract: Embodiments of the present invention are engine drive welding and/or cutting systems which optimize the utilization of engine drive systems, including hybrid engine drive systems. Embodiments include modular systems which allow for the remote utilization of a battery powered module which can be separated from an engine drive generator power supply. Other embodiments include engine drive power supplies that can communicate with a load coupled to the power supply, such as welders, cutters and wire feeders to determine an optimum operational level. Further embodiments include engine drive power supplies that can be coupled together to optimize fuel and system usage.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: May 7, 2019
    Assignee: LINCOLN GLOBAL, INC.
    Inventors: Edward Enyedy, Adam M. Hruska
  • Patent number: 10250158
    Abstract: An AC/DC conversion circuit, including: four bidirectional switches forming an H bridge; a capacitor connected between input nodes of the bridge; a capacitor connected between output nodes of the bridge; and a control circuit capable of controlling the bridge alternately to a first configuration where first and second diagonals of the bridge are respectively conductive and non-conductive, and to a second configuration where the first and second diagonals are respectively non-conductive and conductive, the control circuit being capable, during a phase of transition between the first and second configurations, of: turning off the switches of the first diagonal; and for each switch of the second diagonal, turning on the switch only when the voltage thereacross takes a zero value.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: April 2, 2019
    Assignee: Commisariat à l'Énergie Atomique et aux Énergies Alternatives
    Inventors: Léo Sterna, Othman Ladhari, Jean-Paul Ferrieux, David Frey, Pierre-Olivier Jeannin
  • Patent number: 10150173
    Abstract: A method and apparatus for providing a welding type power is disclosed. It includes an outer housing having a wind tunnel within the outer housing. Air flows through the wind tunnel in an air flow direction. The width of the tunnel is less at one location than at another location. Electrical components receive power and provide a welding type output. A first group of those components require air flow for cooling, and are disposed at least partially in the wind tunnel. A second group of components are not disposed in the wind tunnel. The wind tunnel can also change direction.
    Type: Grant
    Filed: November 7, 2014
    Date of Patent: December 11, 2018
    Assignee: Illinois Tool Works Inc.
    Inventors: Kenneth C. Altekruse, Nicholas A. Matiash
  • Patent number: 10150174
    Abstract: Systems and methods to convert welding power to auxiliary power are disclosed. An example power conversion system includes: power conversion circuitry configured to convert an input voltage from a welding power supply unit to a second output to power an auxiliary load, the power conversion circuitry comprising: an input power converter configured to receive the input voltage from the welding power supply unit; an input-to-output isolation circuit configured to maintain the auxiliary load at a different potential than the welding power supply unit; and an output power converter configured to output power having a target frequency and a target waveform to the auxiliary load; and a processor configured to control the output of the power conversion circuitry based on feedback associated with power requirements at the auxiliary load.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: December 11, 2018
    Assignee: Illinois Tools Works Inc.
    Inventors: Neal Maynard Borchert, Todd Gerald Batzler
  • Patent number: 10139093
    Abstract: A linear light-emitting diode (LED)-based tube (LLT) lamp comprises a pulse amplitude control module, a power sustaining device, an LED driving circuit, and LED arrays. The pulse amplitude control module is configured to generate one or more voltage pulses in each alternate-current (AC) cycle in response to a half-wave direct-current (DC) voltage when the LLT lamp starts to receive power from an input AC line voltage and when the half-wave DC voltage drops to a few tens of volts in each AC cycle. The power sustaining device receives the one or more voltage pulses and builds up a DC voltage depending on pulse amplitudes. When an electric shock occurs, the DC voltage built up is not high enough to operate the LED driving circuit and thus to disable the LED arrays, without electric shock current leaking into an electrical conductor of the LLT lamp during relamping or maintenance.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: November 27, 2018
    Assignee: ALEDDRA INC.
    Inventor: Chungho Hsia
  • Patent number: 10112250
    Abstract: The present invention belongs to the technical field of argon arc welding machine, and particularly refers to a welding power supply and an AC-DC argon arc welding machine.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: October 30, 2018
    Assignee: SHENZHEN JASIC TECHNOLOGY CO., LTD.
    Inventors: Jinlei Zhang, Lei Pan
  • Patent number: 10083791
    Abstract: In an integrated magnetic component for a switched mode power converter, comprising two magnetic cores forming an 8-shaped core structure and at least two first electric winding wires, wherein at least one magnetic core is an E-core, at least one of the first electric winding wires is wound on a flange of the E-core.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: September 25, 2018
    Assignee: DET INTERNATIONAL HOLDING LIMITED
    Inventors: Hugues Douglas Njiende T., Frank Schafmeister, Rongyuan Li, Peter Ide
  • Patent number: 10010960
    Abstract: A welding system performs communication accurately without provision of a control line between a welding power supply device and a wire feeding device. The welding system includes a welding power supply device, a wire feeding device, a welding torch, and power cables for supplying welding power from the welding power supply device to the welding torch. The system also includes power transfer lines for supplying power for driving a feeding motor disposed in the wire feeding device, so that the welding power supply device and the wire feeding device perform communication via the power transfer lines. The power transfer lines have less superimposed noise compared to the power cables. Accordingly, communication can be performed more accurately than in the case of performing communication via the power cables.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: July 3, 2018
    Assignee: DAIHEN Corporation
    Inventors: Toshimitsu Doi, Futoshi Nishisaka
  • Patent number: 10003383
    Abstract: Power transmission system (1) for power transmission of electric power (P) from a power source (2A) to a power sink (4A) which is connected to the power source (2A) via a power transfer cable (3), wherein the power source (2A) has a first pole with a first electric potential, which is connected via parallel current lines of a first conducting pair of the power transfer cable (3) to a first pole of the power sink (4A), and a second pole with a second electric potential, which is connected via further parallel current lines of a second conducting pair of the power transfer cable (3) to a second pole of the power sink (4A), wherein, during the power transmission via the current lines, a user data signal can be transmitted between the power source (2A) and the power sink (4A) via at least one conducting pair with current lines of the same electric potential, uninfluenced by the power transmission.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: June 19, 2018
    Assignee: Fronius International GmbH
    Inventors: Manfred Anzinger-Weitmann, Christian Fasthuber, Helmut Friedl
  • Patent number: 9931707
    Abstract: In embodiments, a welding apparatus includes an automated wire feed mechanism to output wire at a wire feed rate, where the wire is to provide a welding arc to a weld site. The wire feed rate is based at least in part on selected power to be provided to the weld site. Additional embodiments are described and claimed.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: April 3, 2018
    Inventor: Ammon Nazareth Balaster
  • Patent number: 9902008
    Abstract: A method includes detecting whether a wire feeder is in communication with a welding power supply. The method also includes detecting a current welding process of the welding power supply if the wire feeder is in communication with the welding power supply. The method includes determining, at the wire feeder, a welding output polarity. The method also includes setting a new welding process based on the current welding process and the welding output polarity without a user selecting the new welding process.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: February 27, 2018
    Assignee: Illinois Tool Works Inc.
    Inventors: James Francis Rappl, Jeffery Ray Ihde, Kenneth Austin Stanzel, John C. Leisner
  • Patent number: 9876428
    Abstract: A voltage regulator device is disclosed, comprising a first pin and a second pin, a regulator circuit implemented between the first pin and the second pin, one or more internal blocks configured to be powered through a supply node to facilitate operation of the regulator circuit and an internal supply circuit coupled to the first pin, the second pin, and the supply node, the internal supply circuit configured to provide a supply voltage to the supply node from either or both of the first and second pins.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: January 23, 2018
    Assignee: Skyworks Solutions, Inc.
    Inventors: Chak S. Ngai, George A. Hariman, Daniel Chang, Roger Allen Smullen
  • Patent number: 9862048
    Abstract: A method and apparatus for monitoring weld cell and related activity is disclosed. The activity is sensed using a variety of sensors, and reported to the controller, or to a remote location.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: January 9, 2018
    Assignee: Illinois Tool Works Inc.
    Inventors: Todd E. Holverson, William R. Giese, Douglas W. Krebs, Kenneth S. Dobson
  • Patent number: 9762134
    Abstract: A method includes converting power by a power converter comprising a plurality of converter cells, and selectively operating at least one converter cell of the plurality of converter cells in one of an active and an inactive mode based on a level of a power reference signal.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: September 12, 2017
    Assignee: Infineon Technologies Austria AG
    Inventors: Gerald Deboy, Johann Kolar, Matthias Kasper
  • Patent number: 9751150
    Abstract: A power source for an electric arc welding process, wherein the power source comprises an input stage having an AC input and a first DC output signal; a second stage in the form of an unregulated DC to DC converter having an input connected to the first DC output signal and an output in the form of a second DC output signal electrically isolated from the first DC output signal and with a magnitude of a given ratio to the first DC output signal; and, a third stage to convert the second DC output signal to a welding output for the welding process.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: September 5, 2017
    Assignee: Lincoln Global, Inc.
    Inventors: Joseph A. Daniel, Todd E. Kooken, Lifeng Luo
  • Patent number: 9731372
    Abstract: An electric arc welding system for depositing weld metal along a groove between two edges of a metal workpiece where the system contains a first power supply and a second power supply, each providing a welding waveform to respective welding electrodes. The positive output terminals of both power supplies are coupled to the same contact tip and the negative output terminal of one of the power supplies is not coupled to the workpiece.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: August 15, 2017
    Assignee: LINCOLN GLOBAL, Inc.
    Inventors: Timothy Mark O'Donnell, Stephen Richard Cole, Alonzo P. O. Yost
  • Patent number: 9729071
    Abstract: A method includes converting power by a power converter comprising a plurality of converter cells, and selectively operating at least one converter cell of the plurality of converter cells in one of an active and an inactive mode based on a level of a power reference signal.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: August 8, 2017
    Assignee: Infineon Technologies Austria AG
    Inventors: Gerald Deboy, Johann Kolar, Matthias Kasper
  • Patent number: 9713853
    Abstract: Embodiments of the present invention are wire feeders and wire feeder cable connections which include a power block portion, a cable connection portion and a liner guide assembly portion. The liner guide assembly portion and power block portion are structured and assembly so that a liner guide can be removed from a welding cable from inside the wire feeder, without removing the cable connector from the wire feeder.
    Type: Grant
    Filed: February 29, 2016
    Date of Patent: July 25, 2017
    Assignee: LINCOLN GLOBAL, INC.
    Inventor: Jeffrey Kachline
  • Patent number: 9584024
    Abstract: A power supply for welding, cutting and similar operations includes a dual two-switch forward converter. The converter has two inverter circuits coupled in parallel but controlled to provide output power in an interleaved fashion. To avoid “walking” of the circuits (which could result in different duty cycles and imbalance of the load sharing), control signals are determined and applied to a first of the inverter circuits, and “on” times of the first circuit is monitored, such as by augmenting a counter to determine the number of clock cycles the first circuit is “on”. The same duration is then used for commanding output from the second inverter circuit. The duty cycles of both circuits is thus ensured to be the same regardless of changes in the total output power.
    Type: Grant
    Filed: June 24, 2013
    Date of Patent: February 28, 2017
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventors: Alan A. Manthe, Jason Alan Dunahoo, Craig Steven Knoener, Mary Divya Poulose
  • Patent number: 9553523
    Abstract: Described is a circuit for converting electric power between a three-phase grid and a single-phase grid. The circuit includes, in at least one embodiment, a first transformer that is connected to the three-phase grid, a number of first converter stages assigned to the first transformer, the associated DC intermediate circuits and the associated second converter stages. The second converter stages are connected to each other at the alternating-current side outputs with the aid of a series connection.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: January 24, 2017
    Assignee: GE Energy Power Conversion Technology Limited
    Inventors: Joerg Janning, Axel Brandt
  • Patent number: 9527154
    Abstract: A system includes a power supply, a first cable assembly, and a second cable assembly. The power supply includes a housing and supports extending from an upper portion of the housing. The first cable assembly has a clamp disposed at a distal end of a first cable extending from the power supply. The clamp is configured to be removably coupled with a workpiece. The second cable assembly has a torch disposed at a distal end of a second cable extending from the power supply. The housing includes one or more sloped panels configured to hold the first and second cables in a position wrapped about the upper portion of the housing when the clamp and the torch are coupled to the supports.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: December 27, 2016
    Assignee: HOBART BROTHERS COMPANY
    Inventors: Scott Ryan Rozmarynowski, Brian Scott Bashore
  • Patent number: 9531300
    Abstract: A method and apparatus for line-cycle storage of a single-phase cycloconverter. The method includes receiving input power from an input port of the singe-phase cycloconverter and monitoring an AC output port of the single-phase cycloconverter. The method measures energy stored in a line-cycle energy storage circuit coupled to one line of the AC output port of the single-phase cycloconverter, and determines a phase difference between a monitored AC voltage of the AC output port and the measured voltage of the line-cycle energy storage circuit. The method controls switches in the single-phase cycloconverter to selectively store energy in the line-cycle energy storage circuit based on the phase difference.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: December 27, 2016
    Assignee: Enphase Energy, Inc.
    Inventors: Michael J. Harrison, Donald Richard Zimmanck
  • Patent number: 9524820
    Abstract: An apparatus includes a coil assembly, a core, and at least one cooling channel. The coil assembly includes at least one winding configured to receive a varying electrical current. The core includes multiple segments, and the at least one winding is wound around portions of the segments and is configured to generate a magnetic flux. The at least one cooling channel is configured to transport coolant through the coil assembly or core in order to cool the coil assembly or core. Portions of the segments of the core can be separated from one another to form multiple cooling channels through the core, and the multiple cooling channels can be configured to transport coolant through the core. The coil assembly may include at least one insulative spacer having multiple cooling channels, and the multiple cooling channels may be configured to transport coolant through the coil assembly.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: December 20, 2016
    Assignee: RAYTHEON COMPANY
    Inventors: Boris S. Jacobson, Stephen R. Elkins
  • Patent number: 9457420
    Abstract: Gas metal arc welding (GMAW) is a widely used process for joining metals. Its main advantage over its competition gas tungsten arc welding (GTAW) is its high productivity in depositing metals. However, to melt metal from the wire to deposit into the work-piece, additional heat is consumed and applied to the work-piece with an uncontrolled fixed proportion to the effective heat that melts the wire. Such additional heat is often in excess of the needed heat input for the work-piece. The side-effects include a waste of the energy, an increased distortion, and possible materials property degradation. This invention is to device a method to transfer this part of heat to melt the wire by adding two wires, which form a pair of arc spots, under a tungsten arc. It also devices a method to assure the arc between the two wires be maintained stable such that the transfer be successfully continuous.
    Type: Grant
    Filed: June 13, 2013
    Date of Patent: October 4, 2016
    Assignee: BEIJING UNIVERSITY OF TECHNOLOGY
    Inventors: Shujun Chen, Liang Zhang, Ning Huang, Xuping Wang, Zhenyang Lu, Fan Jiang
  • Patent number: 9450519
    Abstract: A DC power source to supply DC power to a plasma generator is configured as a simple and small-sized device that forms high voltage for generating a plasma discharge. A step of passing a short-circuit current for extremely short time through the voltage source step-down chopper provided in the DC power source and accumulating energy in a reactor is performed repeatedly more than once, so as to discharge the energy accumulated in the reactor to the output capacitance and raise the output voltage sequentially, thereby boosting the voltage up to the ignition set voltage. The short-circuit current is formed by a switching element of a boosting circuit provided in the DC power source. Boosting the voltage at the output terminal by accumulating and discharging the short-circuit current is repeated to raise the voltage at the output terminal of the DC power source up to the ignition set voltage.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: September 20, 2016
    Assignee: KYOSAN ELECTRIC MFG. CO., LTD.
    Inventors: Itsuo Yuzurihara, Shinichi Kodama, Toshiyuki Adachi
  • Patent number: 9403232
    Abstract: An arc welding apparatus includes a lifting motor. A speed adjustment circuit controls the lifting motor such that the rising speed of the welder decreases if a current of the welding power source is smaller than a set value, or increases if the value of the current is larger than the set value. A voltage adjustment circuit controls the welding power source such that the voltage increases if the number of times that the voltage falls below a determination voltage is larger than a set number of times or if periods for which the voltage remains below the determination voltage are longer than a set time, or decreases if the number of times that the voltage falls below a determination voltage is smaller than a set number of times or if periods for which the voltage remains below the determination voltage is shorter than a set time.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: August 2, 2016
    Assignee: Kobe Steel, Ltd.
    Inventors: Reiichi Suzuki, Kei Yamazaki
  • Patent number: 9331579
    Abstract: A power supply includes power modules. Each of the power modules includes an input stage configured to convert an input voltage into an intermediate voltage, and an output stage configured to output a DC supply voltage according to the intermediate voltage. Input terminals of the input stages in the plurality of power modules are electrically connected in series, and the input stages are configured to be controlled with at least one first common control signal having a common duty cycle. Output terminals of the output stages in the plurality of power modules are electrically connected in parallel, and the output stages are configured to be controlled with at least one second common control signal having a common duty cycle. A method of supplying power is also disclosed herein.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: May 3, 2016
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Peter Barbosa, Brian T. Irving, Chih-Chiang Chan, Yu-Ming Chang
  • Patent number: 9308605
    Abstract: The object of the invention is a battery-operated welding and/or cutting device including a frame and at least one battery cell. The frame includes a cooling profile having an outer surface, which is in direct contact with the air surrounding the device. The cooling profile is provided to accommodate at least one battery cell, such that the cooling profile at least partly surrounds the battery cell in order to conduct heat from the battery cell to the cooling profile and, via the outer surface of the cooling profile, away from the device. The object of the invention is also a cooling profile.
    Type: Grant
    Filed: November 23, 2012
    Date of Patent: April 12, 2016
    Assignee: KEMPPI OY
    Inventors: Petteri Jokinen, Rauno Turunen, Ilkka Alhonsalo, Petri Korhonen
  • Patent number: 9296058
    Abstract: A dual power pin connector assembly for connecting both a MIG welding gun and a spoolgun to a welding machine. The dual power pin connector is comprised of a busbar portion that electrically and mechanically couples the positive output terminal of the welding machine power supply to a wire drive for the MIG welding gun. The connector is further comprised of an integral quick release assembly/clamping portion that electrically and mechanically connects the positive power supply terminal to a power supply cable for the spoolgun. The clamping portion receives and retains a power pin coupled to one end of the spoolgun power cable in a receptacle that is manually tightened and loosened.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: March 29, 2016
    Assignee: Illinois Tool Works, Inc.
    Inventors: Robert Willenkamp, Scott Rozmarynowski
  • Patent number: 9199327
    Abstract: A portable IGBT (Insulated Gate Bipolar Transistor) of high reliability, compact size, and low cost includes a main circuit to which a control circuit and an auxiliary power supply circuit are connected. The main circuit includes, in sequence, an input rectifier filter circuit, an inverter circuit, a high-frequency primary transformer, and a secondary output rectifier circuit. The control circuit includes a PWM regulation circuit, an IGBT driving circuit, a current feedback circuit, and a current setup circuit. The inverter circuit includes a full-bridge hard switching structure, which has IGBTs constituting bridge arms that are sequentially conducted, so that their alternating conduction converts direct current into high frequency square wave alternating current, which flows through the high-frequency primary transformer and is then subjected to rectification to supply an output of low voltage direct current.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: December 1, 2015
    Assignee: SHENZHEN JASIC TECHNOLOGY CO., LTD.
    Inventors: Aiping Xu, Lei Pan, Bo Xiao
  • Publication number: 20150138842
    Abstract: A method for controlling a power source is specified. The power source comprises a first converter (1) for converting an input voltage (UE) to an intermediate circuit voltage (UZK, UZK1), an intermediate circuit capacitor (2) and a second converter (3) for converting the intermediate circuit voltage (UZK, UZK1) to an output voltage (UA). A process is being controlled at the output of the second converter (3). A digital process controller predetermines at least one parameter and/or the value thereof to control the intermediate circuit voltage (UZK, UZK1) for the first converter (1) depending on an event at the output.
    Type: Application
    Filed: May 16, 2013
    Publication date: May 21, 2015
    Applicant: Fronius International GmbH
    Inventors: Thomas Knoll, Alfred Hiesmayr
  • Publication number: 20150136745
    Abstract: Disclosed herein is a capacitive discharge welder that comprises a series of super capacitors (or ultra-capacitors) used as a power source. The capacitive discharge welder disclosed herein also comprises a dual function circuit that serves as an emergency stop circuit that is capable of redirecting or disconnecting the weld path in certain applications and situations and a drain circuit to drain a filter capacitor. The capacitive discharge welder disclosed herein is configured to use the super capacitor power supply in a direct discharge configuration as a CD welder. Additionally, the super capacitors are switched at frequency through a filter capacitor to produce a shaped DC welding waveform suitable for a wide variety of welding applications.
    Type: Application
    Filed: November 19, 2013
    Publication date: May 21, 2015
    Inventors: Aaron A. Astle, Keyvan Vasefi, Larin A. Dodgen, Luke B. Peacock, Preston E. Price
  • Publication number: 20150114939
    Abstract: A controller for a welding system adapted to determine a value of a weld secondary parameter across a weld secondary component based on a sensed parameter is provided. The controller may also be adapted to compare the determined value to a reference value range and to alert a user to a presence and location of a weld secondary error when the determined value is outside the referenced value range.
    Type: Application
    Filed: January 5, 2015
    Publication date: April 30, 2015
    Inventors: Robert Raimund Davidson, Richard J. Schuh, Anthony Joseph Kowaleski, Thomas Allen Bunker, Nicholas James Dessart, Bruce A. Casner
  • Patent number: 9018563
    Abstract: In consumable-electrode gas-shield arc welding, carbon dioxide gas is used as shield gas; the molten pool is formed using a pulsed arc as a leading electrode arc transferring one droplet per cycle by alternately outputting, in each cycle, pulses of two different pulse waveforms of which a pulse peak current level and/or a pulse width per period differ; the conductively heated filler wire is inserted into the molten pool as a trailing electrode; the distance between a tip of the filler wire inserted into the molten pool and a conductive point of the filler wire is set within a range of 200×10?3 to 500×10?3 m; and a leading-electrode base current value is set larger than a trailing-electrode filler current value. According to such a method, even when inexpensive carbon dioxide gas is used as shield gas, the amount of spatter can be reduced, and high weldability can be achieved in multipass welding.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: April 28, 2015
    Assignee: Kobe Steel, Ltd.
    Inventors: Kei Yamazaki, Reiichi Suzuki
  • Patent number: 9012807
    Abstract: The present invention is directed to a system and method of remotely controlling a welding machine with command signals transmitted to the welding power source across a weld cable connecting the power source to a remote device, such a wire feeder. A transmitter transmits the control commands containing desired welding operational parameters to a receiver disposed in the power source across a weld cable also designed to carry welding power from the power source to the wire feeder.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: April 21, 2015
    Assignee: Illinois Tool Works Inc.
    Inventors: Brian L. Ott, Quinn W. Schartner
  • Patent number: 9006609
    Abstract: 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 a high frequency switching device for creating the individual waveforms in the succession of waveforms, each waveform having a profile is formed by the magnitude of each of a large number of short current pulses generated at a frequency of at least 18 kHz where the profile is determined by the input signal to a wave shaper controlling the short current pulses; a circuit to create a profile signal indicative of the particular type of electrode; and a select circuit to select the input signal based upon the profile signal whereby the wave shaper causes the power source to create a specific waveform profile for the particular type of cored electrode.
    Type: Grant
    Filed: January 29, 2013
    Date of Patent: April 14, 2015
    Assignee: Lincoln Global, Inc.
    Inventors: Elliott K. Stava, Russell K. Myers, Badri K. Narayanan, Patrick T. Soltis
  • Publication number: 20150083700
    Abstract: A hybrid welder having a cabinet, an energy storage device supported by the cabinet and means for removably attaching the cabinet to the welder.
    Type: Application
    Filed: September 20, 2013
    Publication date: March 26, 2015
    Applicant: Lincoln Global, Inc.
    Inventors: Bryan Scott Burkhart, Adam Hruska
  • Publication number: 20150076127
    Abstract: A method of identifying and selecting welding electrodes and welding output parameters on a welding power source is provided. The method includes identifying electrodes and/or electrode packaging with distinct colors or patterns which correspond to properties of the electrode. The method also may include employing distinguishable identifying markings on a power supply which correspond to the electrodes to be used to allow for easy setting of output parameters.
    Type: Application
    Filed: May 28, 2014
    Publication date: March 19, 2015
    Applicant: LINCOLN GLOBAL, INC.
    Inventors: George BLANKENSHIP, Robert Micco, Aurthur B. Papineau
  • Publication number: 20150069031
    Abstract: A method and a welding device for performing a welding process on a workpiece by a welding torch, uses a melting welding wire, which is arranged on a wire coil and may be supplied to the welding torch via a hose package, wherein different welding wires and different welding parameters are used depending on the geometry of the workpiece. A welding wire formed by the different interconnected welding wires in lengths depending on the geometry of the workpiece is arranged on the wire coil, so the welding process may be performed without interruptions using the different welding wires and the different welding parameters by supplying to the welding torch the welding wire formed by the different interconnected welding wires from the wire coil.
    Type: Application
    Filed: September 11, 2014
    Publication date: March 12, 2015
    Applicant: Fronius International GmbH
    Inventors: Manfred RUEHRNOESSL, Markus SCHORN, Herbert STAUFER
  • Publication number: 20150069030
    Abstract: A welding device for a production system having a welding tool and a control device operatively connected to the welding tool. The control device can be configured to control the control the welding tool to connect at least two components with a welded connection with reference to a first parameter. The first parameter defines the welded connection. The control device can be furthered configured to access the first parameter for the welded connection with reference to a hierarchy, wherein the hierarchy identifies a second parameter assigned to the first parameter and the second parameter contains a third parameter, wherein the second parameter defines a welding task and the third parameter defines a first combination of values.
    Type: Application
    Filed: September 11, 2014
    Publication date: March 12, 2015
    Inventors: Juergen Haeufgloeckner, Sebastian Zeller, Peter Duerrschmied, Andreas Mader, Tobias Herkert, Joachim Rathke, Rojo James Chennoth
  • Patent number: 8975558
    Abstract: An electric arc welder for creating an arc welding process between an electrode and a workpiece where the welder comprises a preregulator having a first DC signal as an input and a regulated second DC signal as an output, an unregulated isolation inverter to convert the regulated second DC signal into a DC power signal and a weld control stage for converting the DC power signal into a welding signal. A controller causes the weld control stage to conform the welding signal into a waveform to provide welding process between the electrode and the workpiece, which controller has an output control signal regulated to produce a selected waveform or waveforms and the polarity of the waveform or waveforms. A device selects one of several stored welding processes as a program and a corresponding polarity for outputting by the controller.
    Type: Grant
    Filed: April 27, 2005
    Date of Patent: March 10, 2015
    Assignee: Lincoln Global, Inc.
    Inventors: Elliott K. Stava, William T. Matthews
  • Publication number: 20150060425
    Abstract: A welding torch with a welding electrode and a welding electrode holder is provided. One welding torch includes a securing mechanism and an insulated grip. The securing mechanism is configured to secure an exposed central portion of a welding rod bounded by flux covered first and second sides. The securing mechanism is also configured to make electrical contact with the central portion of the rod for arc welding with the first side. The insulated grip is configured to cover the second side of the welding rod.
    Type: Application
    Filed: November 10, 2014
    Publication date: March 5, 2015
    Inventors: James Francis Rappl, Thomas Don Lahti
  • Patent number: 8969762
    Abstract: A system, in one embodiment, may include a portable welder having a welding output, a charging output, a welding circuit coupled to the welding output; and a charging circuit coupled to the charging output. The charging circuit may be configured to automatically adjust power to the charging output based on a feedback associated with charging a battery.
    Type: Grant
    Filed: July 6, 2007
    Date of Patent: March 3, 2015
    Assignee: Illinois Tool Works Inc.
    Inventors: Rick Beeson, Daniel C. Fosbinder
  • Patent number: 8969763
    Abstract: In a welding power supply, a feedback circuit senses electrical signals from the power output studs and from remote welding sense leads. The feedback control circuit scales the electrical signals and converts the signals to binary numbers having magnitude bits and a polarity bit respectively. The binary numbers, representing the signals, are simultaneously shifted into a logic processor for calculation of a feedback signal based on the digitized input. The feedback signal is calculated based on the polarity of connectivity of the remote welding sense leads as represented by the binary numbers. The feedback signal is then fed into the power supply output controller for automatically adjusting the power output of the arc welder.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: March 3, 2015
    Assignee: Lincoln Global, Inc.
    Inventor: Edward Michael Furman
  • Publication number: 20150053660
    Abstract: A welding-type power supply includes a controller, a preregulator, a preregulator bus, and an output converter. The controller has a preregulator control output and an output converter control output. The controller has a converter control output connected to the control input, and a flux balancing module. The converter control output is responsive to the flux balancing module such that the flux in the transformer remains balanced.
    Type: Application
    Filed: November 7, 2014
    Publication date: February 26, 2015
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventors: Quinn W. Schartner, Bernard J. Vogel, Andrew D. Nelson