Pulsating Or Periodic Output Patents (Class 219/130.51)
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Patent number: 12220766Abstract: In order to provide an improved method for producing metal structures which allows a high level of flexibility in respect of process speed of production, material composition of the metal structure, production accuracy, and the quality of the produced metal structure, according to the invention, a second metal additive is supplied to a welding point on a metal base material, which second metal additive is fused at least by a second electric arc produced between a second electrode and the metal base material in order to produce a second weld seam at the welding point, wherein different materials are used as the first metal additive and as the second metal additive, and wherein the first metal additive and the second metal additive are supplied to the welding point sequentially in time and are fused in the region of the welding point in whichever of the first and second electric arcs is burning, in order to form the three-dimensional metal structure.Type: GrantFiled: September 18, 2019Date of Patent: February 11, 2025Assignee: Fronius International GmbHInventors: Manfred RührnößL, Markus Schorn, Herbert Staufer
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Patent number: 12208473Abstract: An arc welding control method is for performing control in an arc period. The control includes: (i) increasing a welding current to a first current value at a first gradient and maintaining the welding current at the first current value for a first period; (ii) reducing the welding current from the first current value to a second current value at a second gradient and maintaining the welding current at the second current value for a second period; (iii) increasing the welding current from the second current value to a third current value at a third gradient; and (iv) starting to reduce the welding current from the third current value within a third period, which is shorter than the first period, after the welding current reaches the third current value.Type: GrantFiled: February 28, 2022Date of Patent: January 28, 2025Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takahiro Noguchi, Akira Nakagawa, Junji Fujiwara
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Patent number: 12168271Abstract: A welding system configured to eliminate effects of arc blow in a welding operation. The welding system comprises welding circuitry, preheat circuitry, a drive roller, and control circuitry configured to perform a reciprocation cycle. The reciprocation cycle may include the steps of: advancing a filler material toward the welding work piece until the filler material is electrically connected to the weld pool; supplying the preheat power to heat the filler material while the filler material is electrically connected to the weld pool; retracting the filler material away from the welding work piece until the filler material is not electrically connected to the weld pool; and terminating supply of the preheat power to the filler material while the filler material is not electrically connected to the weld pool.Type: GrantFiled: November 6, 2020Date of Patent: December 17, 2024Assignee: Illinois Tool Works Inc.Inventor: Michael V. Hoeger
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Patent number: 12122001Abstract: A welding system configured to eliminate effects of arc blow in a welding operation. The welding system comprises welding circuitry, preheat circuitry, and control circuitry configured to switch the welding circuitry and the preheat circuitry between power levels asynchronously during the welding operation. The control circuitry configured to switch the welding circuitry and the preheat circuitry between power levels asynchronously such that the preheat circuitry is switched to the second preheat power level when the welding circuitry is switched to the first welding power level and the preheat circuitry is switched to the first preheat power level when the welding circuitry is switched to the second welding power level.Type: GrantFiled: November 6, 2020Date of Patent: October 22, 2024Assignee: Illinois Tool Works Inc.Inventor: Michael V. Hoeger
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Patent number: 12121999Abstract: A pulse welding period includes a first peak period for supplying a first peak current to a welding wire, a first base period for supplying a base current smaller than the first peak current to the welding wire, a second peak period for supplying a second peak current to the welding wire after alternately repeating the first peak period and the first base period (n?1) times (n is an integer equal to or larger than 2), and a second base period for supplying the base current to the welding wire. The second peak current is larger than the first peak current, and droplets are transferred from the welding wire during the second peak period or the second base period.Type: GrantFiled: October 16, 2020Date of Patent: October 22, 2024Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Noriyuki Matsuoka, Masaru Kowa, Junji Fujiwara
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Patent number: 12090580Abstract: A welding apparatus includes a welding power source configured to output current between a consumable electrode and a workpiece; and circuitry. The circuitry is configured to control the welding power source to repeat a sequence including: outputting a positive peak current from the workpiece to the consumable electrode during a positive peak period; outputting a positive base current from the workpiece to the consumable electrode and subsequently outputting a negative base current from the consumable electrode to the workpiece during a first base period, an absolute value of the positive base current and the negative base current being less than the positive peak current; and outputting a negative peak current from the consumable electrode to the workpiece during a negative peak period following the first base period, an absolute value of the negative peak current being greater than the absolute value of the positive base current and the negative base current.Type: GrantFiled: September 26, 2019Date of Patent: September 17, 2024Inventors: Masafumi Murakami, Fuminori Inagaki
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Patent number: 12005533Abstract: An output control for a welding-type power supply includes a first contactor associated with a first weld output range. A second contactor associated with a second weld output range. An input device configured to select a weld output value from the first weld output range and the second weld output range. A control circuit configured to control the first contactor and the second contactor based on a selected weld output value, and adjust a weld output based on the selected weld output value of the input device.Type: GrantFiled: September 29, 2017Date of Patent: June 11, 2024Assignee: Illinois Tool Works Inc.Inventor: Nathan Joe Jochman
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Patent number: 11999021Abstract: An example welding-type power supply includes: a transformer having a primary winding and first and second secondary windings; an input circuit configured to provide an input voltage to the primary winding of the transformer; first, second, third, and fourth switching elements, and a control circuit configured to: control the first, second, third, and fourth switching elements to selectively output a positive or negative output voltage without a separate rectifier stage by selectively controlling ones of the first, second, third, and fourth switching elements based on a commanded output voltage polarity and an input voltage polarity to the transformer; and prior to changing from a first output voltage polarity to a second output voltage polarity, controlling the first, second, third, and fourth switching elements to reverse the power flow to return reactive energy to an input circuit via the transformer.Type: GrantFiled: May 26, 2021Date of Patent: June 4, 2024Assignee: Illinois Tool Works Inc.Inventor: Andrew Joseph Henry
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Patent number: 11974385Abstract: A system for determining an operational state of an atmospheric pressure plasma. The system has a transformer for coupling power into the atmospheric pressure plasma, a current sampling circuit configured to sample at least one current pulse flowing through a primary winding of the transformer, and a programmed microprocessor configured to determine, from a waveform of the current pulse, the operational state of the atmospheric pressure plasma. The operational state is one of: a no plasma state, a plasma origination state indicative of an ignited arc expanding into a plasma by gas flow thereinto, and a plasma maintenance state indicative of the plasma being expanded.Type: GrantFiled: April 10, 2023Date of Patent: April 30, 2024Assignee: Atmospheric Plasma Solutions, Inc.Inventor: Terrence E. Rogers
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Patent number: 11958145Abstract: A welding device for gas shielded arc welding includes: a portable welding robot mounted with a welding torch including a nozzle that guides jetting of shielding gas and a contact tip that performs energization on a consumable electrode; a feeding device that supplies the consumable electrode to the welding torch; a welding power source that supplies electric power to the consumable electrode via the contact tip; a gas supply source that supplies the shielding gas to be jetted from a nozzle end; and a control device that controls the portable welding robot. When the welding torch is seen from a side of jetting of the shielding gas, the contact tip is placed in an inside of an opening of the nozzle, the nozzle and the contact tip have a relatively movable structure, and an inner diameter of the nozzle end is within a range of 10-20 mm.Type: GrantFiled: March 13, 2019Date of Patent: April 16, 2024Assignees: Kobe Steel, Ltd., KOBELCO ROBOTiX Co., Ltd.Inventors: Takashi Yashima, Masahiro Yokota, Shun Izutani, Hirofumi Kawasaki, Shinobu Toda
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Patent number: 11931830Abstract: A control method for gas-shielded arc welding includes providing a normal arc period in which the welding current is maintained at a setting current Icc set in advance, and providing a separation control period after the separation timing of the molten droplet is detected in the normal arc period, the separation control period including a current decreasing section, a current maintaining section, and a current increasing section. In the separation control period, at least one of the following controls for preventing a short circuit is performed: control of an output voltage, control of a feeding speed, and control of a gas ratio.Type: GrantFiled: March 8, 2019Date of Patent: March 19, 2024Assignee: Kobe Steel, Ltd.Inventors: Baini Jo, Shogo Nakatsukasa, Akira Ogawa, Eiji Sato
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Patent number: 11883912Abstract: A welding power supply device includes an inverter for converting DC power into AC power outputted to a welding load, and a voltage circuit for superimposing a restriking voltage on an output to the welding load when the polarity of output current of the inverter switches. The voltage circuit includes a restriking capacitor charged with the re-striking voltage, a charging circuit to charge the capacitor with the restriking voltage, and a discharging circuit to discharge the voltage in the capacitor. The charging circuit includes a DC power supply and a booster to boost DC voltage from the DC power supply. The charging circuit charges the restriking capacitor in first and second states. In the first state, the DC voltage from the DC power supply is directly applied to the re-striking capacitor. In the second state, DC voltage boosted by the booster is applied to the restriking capacitor.Type: GrantFiled: April 4, 2018Date of Patent: January 30, 2024Assignee: DAIHEN CORPORATIONInventors: Chikanori Takami, Hikaru Mizushima, Ichiro Umezawa
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Patent number: 11845149Abstract: A method and apparatus for providing welding-type power that alternates between at least a hotter and a colder process is disclosed.Type: GrantFiled: January 6, 2017Date of Patent: December 19, 2023Assignee: Lyco Manufacturing, Inc.Inventors: Richard J. Schuh, Robert R. Davidson
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Patent number: 11660695Abstract: Welding power supplies, wire feeders, and systems to measure a weld cable voltage drop are disclosed. Example welding-type power supplies include a power converter configured to convert input power to output welding-type power to a remote device via a weld cable; a reference conductor connected between the power supply and the remote device; a voltage monitor configured to determine a first voltage between the weld cable and the reference conductor while substantially zero current is being conducted through the reference conductor; and a receiver circuit configured to receive a second voltage between the weld cable and the reference conductor from the remote device.Type: GrantFiled: March 9, 2017Date of Patent: May 30, 2023Assignee: Illinois Tool Works Inc.Inventors: Adam E. Anders, Brian Schwartz, Andrew D. Nelson, Mark Richard Christopher
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Patent number: 11633800Abstract: The invention relates to a method for contactless ignition an arc (L) between an electrode (3) and a workpiece (4) which is to be welded, for carrying out a welding process, wherein a welding current (I) and a welding voltage (U) are provided at an output (2) of a welding current source (1), wherein the welding current source (1) contains a resonance converter (5) for generating a periodically varying, preferably substantially sawtooth-shaped, open circuit welding voltage (ULL) with voltage maxima (ULL,max) which recur periodically with a repetition rate (fw) and a welding current source (1) for carrying out the igniting process.Type: GrantFiled: November 6, 2018Date of Patent: April 25, 2023Assignee: Fronius International GmbHInventors: Franz Peter Musil, Andreas Prinz
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Patent number: 11611300Abstract: A current sensing correction method for a driving system is provided. Firstly, the detection values of a three-phase current are acquired through the measuring unit. When the three-phase current is maintained at the DC state, the DC values of the three-phase current are acquired and recorded as three-phase demagnetization values. When the detection values are zero, a d-axis current and a q-axis current are calculated according to the three-phase demagnetization values, a d-axis correction current command and a q-axis correction current command are calculated according to a proportional constant, the d-axis current and the q-axis current, and a three-phase demagnetization current is generated to the measuring unit according to the d-axis correction current command and the q-axis correction current command. When the demagnetization time reaches the first predetermined time, the three-phase demagnetization current is not generated.Type: GrantFiled: July 27, 2021Date of Patent: March 21, 2023Assignee: DELTA ELECTRONICS, INC.Inventors: Shao-Kai Tseng, Yi-Jan Chang, Sheng-Han Wu
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Patent number: 11541478Abstract: Devices for laser welding using welding wire have a welding head, a wire guide for the welding wire, and a wire feed drive. The welding wire can be moved by the wire feed drive during a welding process with a feed movement in a feed direction, guided by the wire guide. A positioning device has a positioning drive, by which the welding wire is moved in an oscillating manner in the longitudinal direction of the welding wire, when a wire end of the welding wire is arranged in a welding readiness position. Methods for laser welding using a welding wire as added material are carried out using the devices. A control program controls the devices. The devices for laser welding can be provided as a part of a welding robot.Type: GrantFiled: February 5, 2019Date of Patent: January 3, 2023Assignee: TRUMPF Werkzeugmaschinen GmbH + Co. KGInventors: Wolfgang Andreasch, Moritz Berger, Patrick Weber, Martin Johannes Geiger
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Patent number: 11532997Abstract: An example welding or cutting circuit includes: an input leg comprising a capacitor coupled between a high bus and a low bus; a buck converter coupled in parallel with the input leg, wherein the buck converter comprises a first transistor, a first diode, and an output electrically coupled to a node between the first transistor and the first diode, and wherein the buck converter is configured to convert input voltage to current in an inductor coupled to the output of the buck converter; and a steering leg coupled in parallel with the input leg, wherein the steering leg is configured to control a rate at which the current in the inductor decreases, and wherein a current detector is positioned at the output to monitor the current, the current detector providing current level indications to a hysteretic controller, the hysteretic controller providing signals to the first transistor that control the transistor to an on state or an off state to control the voltage applied to the inductor.Type: GrantFiled: August 4, 2020Date of Patent: December 20, 2022Assignee: Illinois Tool Works Inc.Inventor: Anthony Van Bergen Salsich
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Patent number: 11524353Abstract: Welding is performed by alternately switching a pulse arc welding period (where welding is performed by forward feeding a welding wire by a rotation for the forward feeding of a push side feeding motor and a rotation for the forward feeding of the pull side feeding motor and feeding a peak current and a base current) and a short-circuiting transition arc welding period (welding is performed by forward/backward feeding the welding wire by the rotation for the forward feeding of the push side feeding motor and a rotation for the forward/backward feeding of the pull side feeding motor and feeding a short-circuiting current and an arc current). During the short-circuiting transition arc welding period, a forward feeding peak value Wsp and/or a backward feeding peak value Wrp of a pull feeding speed Fw are compensation-controlled based on a wire storage amount of an intermediate wire storage.Type: GrantFiled: September 16, 2020Date of Patent: December 13, 2022Assignee: DAIHEN CorporationInventor: Kento Takada
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Patent number: 11491571Abstract: An arc welding method is described where pulse arc welding is performed with a welding wire being fed in a forward direction during a first period and short-circuit transfer arc welding is performed with the welding wire being fed in the forward direction and a reverse direction during a second period. The arc welding method alternately switches between the first period and the second period, where the switching of the first period to the second period is performed during a peak period of the pulse arc welding.Type: GrantFiled: September 17, 2019Date of Patent: November 8, 2022Assignee: DAIHEN CorporationInventors: Kento Takada, Tetsuo Era, Shugo Hirota, Toshiaki Nakamata
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Patent number: 11478870Abstract: A pulsed welding regime includes a peak phase in which energy is added to an electrode and a weld puddle, and a molten ball begins to detach from the electrode, followed by a dabbing phase in which current is significantly reduced to place the ball in the weld puddle with addition of little or no energy. The resulting short circuit clears and the system proceeds to a background phase. The current in the dabbing phase is lower than the current during the background phase. The process may be specifically adapted for particular welding wires, and may be particularly well suited for use with cored wires. The dabbing phase allows for lower energy to be transferred to the sheath of such wires, and resets the arc length after each pulse cycle.Type: GrantFiled: November 26, 2014Date of Patent: October 25, 2022Assignee: Illinois Tool Works Inc.Inventors: Robert R. Davidson, Peter Donald Mehn, Richard J. Schuh
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Patent number: 11370050Abstract: A welding system and method provide for generating a controlled waveform for welding power output, the waveform comprising a plurality of successive peak phases followed by a short circuit between a welding wire electrode and an advancing weld puddle. Each then present peak phase is regulated based upon at least the immediately preceding short circuit to control the short circuit that will occur following the then present peak phase. Some embodiments permit regulating at least one waveform phase based upon at least the immediately preceding short circuit to control the next short circuit that will occur, and regulating at least one short response phase based upon at least the immediately preceding short circuit to control the next short circuit that will occur.Type: GrantFiled: March 31, 2015Date of Patent: June 28, 2022Assignee: Illinois Tool Works Inc.Inventors: Robert R. Davidson, Justin Durik, Richard Schuh, David Almy, Richard Martin Hutchison
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Patent number: 11362632Abstract: A high-capacity common-mode inductor processing circuit for network signal is disclosed. Each of high-capacity common-mode inductors is disposed between two adjacent circuit channels to perform signal coupling, and each high-capacity common-mode inductor has parasitic capacitance between primary and secondary sides thereof, each of autotransformers is disposed on a side of corresponding one of the high-capacity common-mode inductors, and center tap lines of the autotransformers are grounded. The high-capacity common-mode inductor includes an iron core post and an iron core cover, the iron core post includes a winding part to be wound by conductive wires, and the conductive wires are wound on the winding part by a preset number of turns, and upwardly stacked and wound on the winding part by a preset layer number. The high-capacity common-mode inductors and the parasitic capacitances can eliminate noise on the circuit channels and perform signal coupling.Type: GrantFiled: April 10, 2020Date of Patent: June 14, 2022Assignee: AJOHO ENTERPRISE CO., LTDInventors: Chia-Ping Mo, Chun-Yen Yeh
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Patent number: 11344964Abstract: Systems, methods, and apparatus to control welding electrode preheating are disclosed. An example consumable electrode-fed welding-type system includes a welding-type current source configured to provide welding-type current to a welding-type circuit, the welding-type circuit comprising a welding-type electrode and a first contact tip of a welding torch; an electrode preheating circuit configured to provide preheating current through a first portion of the welding-type electrode via a second contact tip of the welding torch; an electrode preheating control circuit configured to adjust at least one of the preheating current or an electrode feed speed based on the change in the contact-tip-to-work-distance; and a current interpreter configured to determine a change in a contact-tip-to-work-distance of the welding torch based on at least one of the welding-type current or the preheating current.Type: GrantFiled: June 9, 2017Date of Patent: May 31, 2022Assignee: Illinois Tool Works Inc.Inventors: James Lee Uecker, Jake Zwayer
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Patent number: 11331755Abstract: An additive manufacturing apparatus includes a laser oscillator that is a beam source that outputs a beam, and a rotary motor that is a driving unit that changes the relative positions of a material fed from a wire spool that is a supply source of a wire that is the material and an object to be machined. The driving unit is capable of performing first driving for feeding the material from the supply source toward the object to be machined and second driving for pulling back the fed material to the supply source, and switches from the first driving to the second driving on the basis of a machining program.Type: GrantFiled: October 24, 2018Date of Patent: May 17, 2022Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Satoshi Hattori, Takashi Hashimoto, Nobuyuki Sumi
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Patent number: 11305367Abstract: A non-consumable electrode arc-welding method is provided for causing a welding machine to output or stop a welding current in accordance with at least an ON state and an OFF state of a start signal. In the method, a start signal is switched between an ON state and an OFF state, thereby controlling the on/off operation of the welding machine. Further, an operation mode instruction signal is switched between a normal mode and an interval mode, thereby controlling the operation mode of the welding machine. When the operation mode instruction signal indicates the interval mode and also the start signal is in the ON state, the welding current is outputted in a welding current output period. Then, the output of the welding current is suspended in a welding current interval period successively following the welding current output period.Type: GrantFiled: October 19, 2018Date of Patent: April 19, 2022Assignee: DAIHEN CorporationInventors: Michitaka Todo, Masatoshi Ooie, Toshiyuki Tanaka, Ichiro Umezawa
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Patent number: 11203077Abstract: My invention is an improvement to a welding arc igniter. My invention periodically disables the arc igniter for one or more AC half-cycles. When the igniter skips an AC half-cycle, the welding arc may not ignite, so average weld heat is reduced. AC weld heat can be adjusted in real time, by varying the fraction of AC half-cycles that are skipped. AC polarity balance can be adjusted in real time, by preferentially skipping the electrode-positive or electrode-negative half-cycles.Type: GrantFiled: August 20, 2019Date of Patent: December 21, 2021Inventor: Gordon R. Hanka
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Patent number: 11161194Abstract: A method and apparatus for providing welding-type power is disclosed. The system includes a power supply, a wire feeder, and a controller. The wire feed speed is reduced when the input current exceeds a value to prevent tripping circuit breakers on the power line the welder is connected to. The speed reduction is based on an average current draw exceeding a threshold. The output voltage is reduced if the input current exceeds a second threshold.Type: GrantFiled: June 12, 2015Date of Patent: November 2, 2021Assignee: Illinois Tool Works Inc.Inventors: Craig S. Knoener, Ronald D. Woodward, Alan A. Manthe, Jason A. Dunahoo
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Patent number: 11027355Abstract: Welding power supplies, wire feeders, and systems to measure a weld circuit resistance via communications over the weld circuit are disclosed. An example welding-type power supply includes: a power converter configured to: convert input power to output a current pulse via a weld circuit; and convert the input power to output welding-type power via the weld circuit; a voltage monitor configured to measure a power supply output voltage of the current pulse; a receiver circuit configured to receive, via the weld circuit, a communication comprising a second voltage measurement; and a controller configured to: determine a resistance of a portion of the weld circuit based on the power supply output voltage measurement, the second voltage measurement, and a weld circuit current measurement; and control the power converter to convert the input power to output the welding-type power based on a weld voltage setpoint and the impedance.Type: GrantFiled: March 9, 2017Date of Patent: June 8, 2021Assignee: ILLINOIS TOOL WORKSInventors: Nathan W. Johnson, Brian L. Ott
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Patent number: 11019712Abstract: A method and apparatus for forming torsional magnetic reconnection, and converting stored magnetic energy into charged particle kinetic energy and particle acceleration, is claimed. A torsional magnetic reconnection apparatus generally comprises (1) a vacuum environment housing (2) a plurality of conducting coils to form a magnetic field fan-spine topology and (3) a plasma generation device providing an azimuthal magnetic field perturbation such that current sheets are formed and magnetic reconnection processes can occur. Electric current energization of the plurality of conducting coils generates a potential magnetic fan-spine topology. A simultaneous capacitor bank discharge forms and axially drives a plasma sheath, featuring an azimuthal magnetic field, toward the fan-spine magnetic null that forces the diffusion of magnetic flux through the plasma. This magnetic to plasma kinetic energy conversion process accelerates charged particles far away from the reconnection region along open magnetic field lines.Type: GrantFiled: November 27, 2018Date of Patent: May 25, 2021Assignee: SunBeam Technologies, LLCInventors: David Lawrence Chesny, Norton Brice Orange
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Patent number: 10870161Abstract: In a consumable electrode-type arc welding in which pulse welding and short-circuit welding are alternately repeated, a welding current is controlled such that a welding current immediately before shifting from the pulse welding to the short-circuit welding is lower than a base current in a pulse.Type: GrantFiled: October 16, 2015Date of Patent: December 22, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Noriyuki Matsuoka, Atsuhiro Kawamoto, Junji Fujiwara, Kaito Matsui
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Patent number: 10856373Abstract: This invention concerns power supplies suitable for electric arc gas heaters such a plasma torches. It more particularly relates to the dimensioning of the inductor in the switched-mode DC to DC converter used for feeding the torch. The invention concerns in particular a DC power supply for driving a non-transferred electric arc gas heater, comprising: an AC to DC rectifier providing a potential U0; a DC to DC switching converter having a switching frequency fS; a current control loop having a latency Formula (I); and, a ballast inductor having an inductance L; characterized in that inductance L is such that Formula (II) and Formula (III). Such a design ensures the stability of the current control loop, while also ensuring a sufficient amount of current ripple to spread out the erosion zone on the electrodes of the torch. ? ; ( I ) L > ( U 0 1500 ) ? ? , ( II ) L < 1 f s ? ( U 0 200 ) .Type: GrantFiled: September 25, 2015Date of Patent: December 1, 2020Assignee: UmicoreInventors: John Ostermeyer, Jeroen Heulens
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Patent number: 10722967Abstract: A welder power supply and welding method are provided which utilizes a short arc welding method in which the waveforms have a positive polarity portion and negative portion to optimize heat input and provide heat and current control.Type: GrantFiled: January 27, 2017Date of Patent: July 28, 2020Assignee: LINCOLN GLOBAL, INC.Inventor: Steven R Peters
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Patent number: 10682719Abstract: A welder power supply and welding method are provided which utilizes a short arc welding method in which the waveforms have a positive polarity portion and negative portion to optimize heat input and provide heat and current control.Type: GrantFiled: January 27, 2017Date of Patent: June 16, 2020Assignee: LINCOLN GLOBAL, INC.Inventor: Steven R Peters
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Patent number: 10661372Abstract: A system and method for determining settings or parameters for a welding-type power source are provided. By presenting an operator with an interface that is positioned along the path of a weld cable and configured to input weld characteristics, an operator is not required to determine electrical parameters for setting a welding-type power source output at the power source. The interface is presented to the operator at a remote welding-type device, such as a wire feeder, a weld robot, a torch, or the like. From the operator-specified weld characteristics, the system and method determine appropriate settings for the power source. In some embodiments, the system and method may automatically set the power source accordingly.Type: GrantFiled: November 25, 2013Date of Patent: May 26, 2020Assignee: Illinois Tool Works Inc.Inventors: James F. Ulrich, Bruce Patrick Albrecht, Todd Earl Holverson
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Patent number: 10625358Abstract: An arc welder alternately repeats a short circuit period in which a wire and a welding object are short-circuited and an arc period in which an arc occurs between the wire and the welding object. The arc welder includes a welding output section, a joint type setting section, a storage section, and a waveform parameter determining section. The welding output section performs welding output, and the joint type setting section sets a joint type. The storage section stores a plurality of combinations of joint types and waveform parameters. The waveform parameter determining section determines a waveform parameter based on the joint type set by the joint type setting section and the plurality of combinations. The welding output section performs welding output based on the waveform parameter determined by the waveform parameter determining section. Thus, vaporized zinc is easily released and sufficient welding is performed.Type: GrantFiled: December 15, 2014Date of Patent: April 21, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Junji Fujiwara, Atsuhiro Kawamoto, Kaito Matsui
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Patent number: 10610945Abstract: As a conventional problem, welding on surface-treated material, such as a zinc-coated steel plate, considerably generates air holes including blowholes and also generates lots of spatters. Present invention provides a method of controlling arc welding performed in a manner that a short-circuit period, in which a short circuit is generated between a welding wire and an object to be welded, and an arc period, in which an arc is generated after release of the short circuit, are repeated alternately. According to the method, welding current is increased from an arc-regeneration-before current to a first welding current at a detection of release of the short circuit such that an increase gradient of the welding current becomes not less than 750 A/msec. This suppresses generation of air holes and spatters in welding work on a surface-treated material, such as a zinc-coated steel plate.Type: GrantFiled: December 15, 2014Date of Patent: April 7, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Atsuhiro Kawamoto, Junji Fujiwara, Yukinori Hirota, Noriyuki Matsuoka, Kaito Matsui
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Patent number: 10537953Abstract: In control applying a gradient to a command voltage value during an arc period, although stable welding can be performed even in a case where a protrusion length of a welding wire becomes long, when the disturbance such as sudden change in the protrusion length is generated, a current waveform of the arc period is undershot, the short circuit period is disturbed, and it took time to return to the stable state, and the amount of sputter generation is also increased. Therefore, it is possible to suppress a change in current such as undershoot or the like when the disturbance is generated, stabilize short circuit cycle, perform welding with a strong resistance to disturbance and a small amount of sputter generation by changing an inductance value a plurality of times during the arc period.Type: GrantFiled: November 2, 2015Date of Patent: January 21, 2020Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Kaito Matsui, Atsuhiro Kawamoto, Takahiro Noguchi, Masaru Kowa
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Patent number: 10529227Abstract: A data transmission method for a resistance welding current source during a welding operation generates welding pulses in an inverter with inverter switching elements cyclically with a switching frequency and pulse duration. The pulses are applied to a transformer primary side and rectified on the transformer secondary side by a rectifier with rectifier switching elements to form a resultant welding current. In a data transmission mode the impedance at the primary side is increased in the breaks in the welding operation, control pulses for initializing the data transmission mode are applied by a control device to the primary side and are detected on the secondary side. The rectifier switching elements of the secondary-side rectifier are actuated in a way corresponding to the data to be transmitted. The current on the primary side of the transformer is modulated with these data, and the data are thereby transmitted via the transformer.Type: GrantFiled: November 7, 2016Date of Patent: January 7, 2020Assignee: Fronius International GmbHInventors: Bernhard Artelsmair, Martin Hoertenhuber
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Patent number: 10500671Abstract: Embodiments of the present invention are directed to systems and methods of controlling wire feeding in a welding operation, where the wire feeding has a plurality of positive and negative pulses. Embodiments determine an average wire feed speed and compare the average to a desired wire feed speed and then change a parameter of the wire feed pulses to achieve a desired wire feed speed.Type: GrantFiled: April 6, 2017Date of Patent: December 10, 2019Assignee: LINCOLN GLOBAL, INC.Inventor: Judah Henry
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Patent number: 10493557Abstract: The disclosure relates to a power component for providing an electric current, having plates aligned parallel to one another which are connected to the current inputs and the current outputs of power semiconductors embedded in a component carrier. High currents, for example for resistance welding, can thereby be controlled without excessive heat losses resulting in an increase in temperature of the entire arrangement and thereby in a reduction of the service life.Type: GrantFiled: December 16, 2016Date of Patent: December 3, 2019Assignee: Robert Bosch GmbHInventors: Ludwig Luger, Michael Steinbrecher, Oliver Trautmann, Reinhard Scholz
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Patent number: 10470509Abstract: An apparel garment that includes individual fibers exhibit proper moisture wicking properties and that have been infused or coated (or both) with far infrared materials is provided. The combination of suitable fibers and far infrared materials imparts a unique effect to the apparel garment wherein the far infrared materials will physiologically and therapeutically impact the user's circulatory system to dilate surface capillaries, break down water clusters, and allow for toxin removal at the apparel/skin interface. Coupled with the overall moisture wicking capability, surprisingly the inventive garment actually provides a cooling effect during an exercise event in a warm temperature environment and a warming effect during an exercise event in a cold temperature environment. The utilization of such a garment to impart such an exercise-activated cooling or warming effects, and thus the ability to allow the user greater comfort during any type of workout, is also encompassed within this invention.Type: GrantFiled: March 15, 2013Date of Patent: November 12, 2019Inventor: Brannan Knott
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Patent number: 10369650Abstract: A welding system includes an interface having a first input element configured to receive an input relating to a parameter of power delivered to a welding torch from a welding power supply and to alternatively receive an input relating to a thickness of a work piece, a second input element configured to receive an input relating to a rate of advancement of an electrode delivered to the welding torch from a welding wire feeder and to alternatively receive an input relating to a diameter of the electrode, and a third input element configured to receive an input relating to a welding process type. The welding system also includes control circuitry configured to automatically adjust the parameter of the power and the rate of advancement of the electrode based on the input relating to the welding process type selected with the third input element when the second input element receives the input relating to the diameter of the electrode.Type: GrantFiled: March 2, 2016Date of Patent: August 6, 2019Assignee: Illinois Tool Works Inc.Inventors: Craig Steven Knoener, Benjamin David Romenesko, Ronald Dewayne Woodward
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Patent number: 10367484Abstract: A phase generation circuit is disclosed. The circuit includes a ramp generation circuit arranged to generate a ramp signal in synchronization with a synchronization clock signal. A phase selection circuit generates a reference signal in response to a phase selection signal. A comparator has a first input terminal coupled to receive the ramp signal and a second input terminal coupled to receive the reference signal. The comparator produces a phase clock signal at an output terminal.Type: GrantFiled: July 28, 2016Date of Patent: July 30, 2019Assignee: Texas Instruments IncorporatedInventors: Mingyue Zhao, Jiwei Fan, Michael Munroe
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Patent number: 10363625Abstract: Disclosed is a method for performing gas-shielded pulsed arc welding at high current densities with a flux-cored wire as an electrode wire. The pulsed arc welding is carried out by passing a pulsed current so that a pulse peak current density during a pulse peak time Tp is 400 to 950 A/mm2, a pulse base current density during a pulse base time Tb is 200 A/mm2 or more and differs from the pulse peak current density by 200 to 400 A/mm2, and an average current density is 350 to 750 A/mm2. The method allows significant spatter reduction while attaining a high deposition rate.Type: GrantFiled: April 13, 2011Date of Patent: July 30, 2019Assignee: Kobe Steel, Ltd.Inventors: Kei Yamazaki, Reiichi Suzuki, Yimin Yuan
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Patent number: 10315267Abstract: A TIG welding system is provided including a power source having a controller in communication therewith, the controller having a memory storing at least one waveform and associated with a welding electrode composition (color) in combination with a welding electrode diameter (detected or input).Type: GrantFiled: April 28, 2014Date of Patent: June 11, 2019Assignee: LINCOLN GLOBAL, INC.Inventors: Ferdinand M. Naber, Theresa M. Spear
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Patent number: 10252367Abstract: A method and system to determine optimum operating parameters for the startup phase of a welding-type process based on user-desired operating parameters of the post-startup or welding phase of the welding-type process are disclosed. While applicable to a number of welding-type processes, the method and system are particularly configured to determine an optimum wire feed speed for Gas Metal Arc Welding of aluminum using pulse spray transfer.Type: GrantFiled: March 13, 2017Date of Patent: April 9, 2019Assignee: Illinois Tool Works Inc.Inventors: Charles L. Kaufman, Michael Todd Klegin, Chris J. Roehl
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Patent number: 10113364Abstract: Method and apparatus for isolating and switching lower voltage pulses from high voltage pulses in electrocrushing and electrohydraulic drills. A transformer with a high permeability core acts as a magnetic switch or saturating inductor to switch high voltage pulses to initiate an electrocrushing arc and lower voltage pulses to sustain the arc. The transformer isolates the lower voltage components from the high voltage pulses, and switches to deliver the low voltage current when the core saturates. The transformer enables impedance matching to the arc during all stages of drilling. The saturation time of the transformer core is the time delay between initiation of delivering the high voltage pulse and initiation of delivering the lower voltage current.Type: GrantFiled: September 23, 2014Date of Patent: October 30, 2018Assignee: SDG LLCInventors: William M. Moeny, Josh Gilbrech, Richard Adler
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Patent number: 10052707Abstract: Embodiments of the present invention comprise a system and method to weld or join coated materials using an arc welding system alone, or in combination with a hot wire system, where the arc welding system uses a welding current having an AC current portion to build a droplet for transfer to the workpiece. In further embodiments, the workpiece is coated with a material, such as zinc, and the arc welding system uses an AC welding waveform which is capable of welding coated workpieces with little or no porosity or spatter and can achieve enhanced performance. Additional embodiments use an enhanced electrode to provide optimum porosity performance. Such embodiments allow for the welding of coated material with little or no porosity and spatter, and at a high welding rate.Type: GrantFiled: February 13, 2015Date of Patent: August 21, 2018Assignee: LINCOLN GLOBAL, INC.Inventors: Judah Henry, Steven R Peters, Badri Narayanan
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Patent number: 10052706Abstract: Embodiments of the present invention comprise a system and method to weld or join coated materials using an arc welding system alone, or in combination with a hot wire system, where the arc welding system uses a welding current having an AC current portion to build a droplet for transfer to the workpiece. In further embodiments, the workpiece is coated with a material, such as zinc, and the arc welding system uses an AC welding waveform which is capable of welding coated workpieces with little or no porosity or spatter and can achieve enhanced performance. Additional embodiments use an enhanced electrode to provide optimum porosity performance. Such embodiments allow for the welding of coated material with little or no porosity and spatter, and at a high welding rate.Type: GrantFiled: February 13, 2015Date of Patent: August 21, 2018Assignee: LINCOLN GLOBAL, INC.Inventors: Judah Henry, Steven R Peters, Badri Narayanan