With Automatic Output Control (e.g., Shortcircuit, Infrared) Patents (Class 219/130.21)
  • Patent number: 10286474
    Abstract: A method of automatically setting a welding parameter for MIG/MAG welding is disclosed. The method includes initiating a parameter setting welding operation; measuring a welding voltage and retrieving a parameter representing a wire feed speed during the parameter setting welding operation; and identifying a second function mapping the welding current to the welding voltage from the measured welding voltage and the retrieved parameter.
    Type: Grant
    Filed: June 14, 2010
    Date of Patent: May 14, 2019
    Assignee: ESAB AB
    Inventor: Per Aberg
  • Patent number: 10239147
    Abstract: A welding system includes a torch motion sensing system associated with a welding torch and is configured to sense welding torch orientations or movements. The welding system also includes a processing system that is configured to vary operation of a power source based on the sensed orientations or movements.
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: March 26, 2019
    Assignee: Illinois Tool Works Inc.
    Inventors: Marc Lee Denis, Christopher Hsu
  • Patent number: 10239146
    Abstract: A method and apparatus for providing welding-type power is disclosed and includes a short clearing prediction module that uses the second derivative with respect to time of the output voltage, or an error between a measured output voltage and an output voltage predicted using the first derivative with respect to time of the output voltage.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: March 26, 2019
    Assignee: Illinois Tool Works Inc.
    Inventors: Robert R. Davidson, Richard M. Hutchison, James L. Uecker
  • Patent number: 10239144
    Abstract: The welding device of the present disclosure has a switching section, a setting section, an output detector, a controller, a frequency controller, and a driver. The switching section is formed of a switching element. The setting section determines setting output. The output detector detects welding output. The controller calculates an output-on period of the switching section according to the setting output and the welding output. The frequency controller determines an inverter frequency based on the output-on period. The driver controls on/off operation of a switching element of the switching section based on the inverter frequency and the output-on period. When the output-on period is calculated using a first ratio, the inverter frequency is determined to a first frequency, and when the output-on period is calculated using a second ratio smaller than the first ratio, the inverter frequency is determined to a second frequency higher than the first frequency.
    Type: Grant
    Filed: July 7, 2014
    Date of Patent: March 26, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshiaki Tanaka, Yoshiyuki Tabata, Shinsuke Shimabayashi
  • Patent number: 10189106
    Abstract: A welding regime may implements cyclic short circuits under a closed loop voltage control approach. Upon clearing or imminent clearing of the short circuit, a current recess is implemented. The current recess reduces the current that would otherwise be applied to the weld, resulting in multiple benefits. The recess may be implemented by suspending voltage command signals. Following the current recess, normal control is resumed with the then-current voltage command.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: January 29, 2019
    Assignee: Illinois Tool Works Inc.
    Inventors: Peter Donald Mehn, Caleb Haven, Richard Martin Hutchison, James Lee Uecker
  • Patent number: 10179369
    Abstract: A welding system comprises a welding power source that provides an alternating current in a selected wave form having a set of positive and negative portions, the negative portion consisting of a peak, tailout, and background phase, and the positive portion consisting of a peak, tailout, and background; wherein the power source provides an upward ramping current during the pinch and detachment phase, switches to an electrode negative current during the negative peak, tailout, and background phases, and switches to a subsequent electrode positive portion; wherein, the positive portion may repeat prior to the next shorting event.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: January 15, 2019
    Assignee: LINCOLN GLOBAL, INC.
    Inventors: Judah B. Henry, James E. Hearn
  • Patent number: 10155290
    Abstract: A method for repairing an air cycle machine compressor housing includes removing a journal bearing support sleeve in an air cycle machine compressor housing, positioning a cylindrical insert within the air cycle machine compressor housing, wherein the cylindrical insert has an outer diameter greater than an outer diameter of at least one portion of the removed journal bearing support sleeve, an inner diameter less than an inner diameter of at least one portion of the removed journal bearing support sleeve, and a length greater than a length of the removed journal bearing support sleeve, welding the cylindrical insert to the air cycle machine compressor housing, and machining the welded cylindrical insert to form a replacement journal bearing support sleeve.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: December 18, 2018
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Craig M. Beers, Clarence J. Wytas
  • Patent number: 10144085
    Abstract: 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 command information (amperage/voltage control), welding circuit on/off information (power source output contactor control), and power source mode control (constant voltage/constant current). A transmitter transmits the desired welding operational parameters to a receiver disposed in the power source. The transmitter is constructed to use only a small amount of power which, preferably, is supplied by one or two low voltage replaceable and/or rechargeable batteries. Additionally, an open circuit voltage is not created between the power source and an electrode holder when an arc is not present.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: December 4, 2018
    Assignee: Illinois Tool Works Inc.
    Inventors: Jon O. Reynolds, Bruce Patrick Albrecht, Eric Young, Michael W. Hogan
  • Patent number: 10137520
    Abstract: Systems and methods for providing an improved start in a welding process are provided. The system may include a power circuit and a control circuit. The power circuit can generate a welding output power. The control circuit may be in communication with the power circuit to control, during the start of the welding process, at least one welding parameter until the control circuit determines that welding energy output exceeds an energy output threshold.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: November 27, 2018
    Assignee: Thermal Dynamics Corporation
    Inventors: Roger H. Lambert, Geoffrey H. Putnam
  • Patent number: 10132327
    Abstract: A method for repairing a cabin air compressor outlet housing includes removing a journal bearing support sleeve in a cabin air compressor outlet housing, positioning a cylindrical insert within the cabin air compressor outlet housing, wherein the cylindrical insert has an outer diameter greater than an outer diameter of at least one portion of the removed journal bearing support sleeve, an inner diameter less than an inner diameter of at least one portion of the removed journal bearing support sleeve, and a length greater than a length of the removed journal bearing support sleeve, welding the cylindrical insert to the cabin air compressor outlet housing, and machining the welded cylindrical insert to form a replacement journal bearing support sleeve.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: November 20, 2018
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Craig M. Beers, Clarence J. Wytas
  • Patent number: 10065261
    Abstract: A welding machine power supply apparatus outputs welding current in accordance with welding conditions set through operation of a display and setting unit (20). When a welding operation is ended while the welding machine power supply apparatus is operating, the welding conditions effective at the time the welding operation is ended are automatically stored in a memory (16). When any ones or more of the welding conditions at the time when the welding operation is resumed by the use of the welding machine power supply apparatus are different from the one or ones which were effective when the welding operation was ended, a load button (70), a rotary encoder (64) and a set button (72) are operated to cause a control unit (14) to read out the welding conditions stored in the memory (16) which were effective when the welding operation was ended, and to set the read-out welding conditions in the welding machine power supply apparatus.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: September 4, 2018
    Assignee: SANSHA ELECTRIC MANUFACTURING CO., LTD.
    Inventors: Takeshi Morimoto, Hiroshi Sasou
  • Patent number: 10056011
    Abstract: A real-time virtual reality welding system including a programmable processor-based subsystem, a spatial tracker operatively connected to the programmable processor-based subsystem, at least one mock welding tool capable of being spatially tracked by the spatial tracker, and at least one display device operatively connected to the programmable processor-based subsystem. The system is capable of simulating, in virtual reality space, a weld puddle having real-time molten metal fluidity and heat dissipation characteristics. The system is further capable of importing data into the virtual reality welding system and analyzing the data to characterize a student welder's progress and to provide training.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: August 21, 2018
    Assignee: Lincoln Global, Inc.
    Inventors: David Anthony Zboray, Matthew Alan Bennett, Matthew Wayne Wallace, Jeremiah Hennessey, Yvette Christine Dudac, Zachary Steven Lenker, Andrew Paul Lundell, Paul Dana, Eric A. Preisz
  • Patent number: 10040143
    Abstract: 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: Grant
    Filed: November 11, 2013
    Date of Patent: August 7, 2018
    Assignee: Illinois Tool Works Inc.
    Inventors: Robert R. Davidson, Richard J. Schuh, Matthew Alex Palmer
  • Patent number: 10035212
    Abstract: A method and apparatus for providing welding-type power and auxiliary power includes an input circuit, a welding-type output power circuit, an auxiliary power circuit, and a controller. The input circuit receives input power and provides power to a common bus. The welding-type output power circuit receives power from the common bus and provides welding-type output power. The auxiliary power circuit receives power from the common bus and provides non-isolated auxiliary output power. The controller controls the auxiliary power circuit and the welding-type output power circuit.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: July 31, 2018
    Assignee: Illinois Tool Works Inc.
    Inventor: Michael D. Madsen
  • Patent number: 9987701
    Abstract: Welding power is generated by first generating two different current waveforms, and comparing the waveform values for control intervals to select which waveform provides the greater current. The waveforms are for different transfer modes, such as one for a pulsed arc portion, and another for a short-circuit transfer mode or for short-circuit clearing. The waveforms may be programmed by settings in a state machine. A balance or relative prioritization in the comparison may be influenced by user inputs. The resulting hybrid process has aspects of both spray transfer and short-circuit transfer modes.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: June 5, 2018
    Assignee: Illinois Tool Works Inc.
    Inventors: Richard Martin Hutchison, James Lee Uecker, Todd Earl Holverson, Bryan Dustin Marschke, Robert Raimund Davidson, Richard J. Schuh
  • Patent number: 9989041
    Abstract: Thruster grid clear circuits and methods to clear thruster grids are disclosed. An example apparatus includes a low voltage grid clear circuit to apply first energy to a grid at a first voltage, and a high voltage grid clear circuit to detect a failure of the applied energy to clear a short circuit condition of the grid and to apply second energy to the grid at a second voltage higher than the first voltage.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: June 5, 2018
    Assignee: The Boeing Company
    Inventors: John F. Stickelmaier, Philip D. Nguyen
  • Patent number: 9943923
    Abstract: Systems and methods for providing an improved start in a welding are provided. The system may include a power circuit and a control circuit: The power circuit may generate welding output power for a welding process. The control circuit may control the start of the welding process, for example, by generating a current pulse.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: April 17, 2018
    Assignee: Victor Equipment Company
    Inventors: Roger H. Lambert, Geoffrey H. Putnam
  • Patent number: 9919377
    Abstract: A welding power source configured to receive an input power includes a plurality of components and supervising circuitry configurable in a plurality of modes. The plurality of components include power conversion circuitry and background power supply. The supervising circuitry is configured to distribute the input power to the plurality of components based at least in part on a mode of the plurality of modes. The plurality of modes include a welding mode configured to distribute the input power to the power conversion circuitry and to the background power supply. The plurality of modes also include a monitoring mode configured to distribute the input power to the background power supply, and to not distribute the input power to the power conversion circuitry.
    Type: Grant
    Filed: January 5, 2016
    Date of Patent: March 20, 2018
    Assignee: Illinois Tool Works Inc.
    Inventors: Indra B. Wiryadinata, Mark A. Ulrich, Charles L. Kaufman
  • Patent number: 9889517
    Abstract: A system and method for generating a weld are provided. The system receives a selection of a magnitude of a voltage. The system selects a first weld control algorithm when the magnitude of the voltage is in a first range of values. The system may also select a second weld control algorithm when the magnitude of the voltage is in a second range of values. The system may generate welding output power based on the first and second weld control algorithms.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: February 13, 2018
    Assignee: Victor Equipment Company
    Inventors: Roger H. Lambert, Geoffrey H. Putnam
  • Patent number: 9868171
    Abstract: Systems and methods for providing an improved start in a welding process are provided. The system may include a power circuit and a control circuit. The power circuit can generate a welding output power. The control circuit may be in communication with the power circuit to control, during the start of the welding process, at least one welding parameter until the control circuit determines that welding energy output exceeds an energy output threshold.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: January 16, 2018
    Assignee: Victor Equipment Company
    Inventors: Roger H. Lambert, Geoffrey H. Putnam
  • Patent number: 9808882
    Abstract: A method of controlling a welding system includes providing a welding wire to a welding torch at a first wire feed speed, providing a pulsed power output to the welding wire via a contact point of the welding torch, determining, utilizing a sensing system, a contact-point-to-work-distance (CPWD) between the contact point and a workpiece, and changing, utilizing a controller, the wire feed speed of the welding wire to a second wire feed speed based at least in part on the determined CPWD.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: November 7, 2017
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventor: Richard Martin Hutchison
  • Patent number: 9808881
    Abstract: A method and apparatus for providing welding-type power and auxiliary power includes an input circuit, a welding-type output power circuit, an auxiliary power circuit, and a controller. The input circuit receives input power and provides power to a common bus. The welding-type output power circuit receives power from the common bus and provides welding-type output power. The auxiliary power circuit receives power from the common bus and provides non-isolated auxiliary output power. The controller controls the auxiliary power circuit and the welding-type output power circuit.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: November 7, 2017
    Assignee: Illinois Tool Works Inc.
    Inventor: Michael D. Madsen
  • Patent number: 9776273
    Abstract: An arc-welding method in welding by repeating a short circuit and an arc. When the sign of opening of the short circuit is detected, the welding current is reduced from a first current value at the detection of the sign to a second current value, which is lower than the first current value. When the opening of the short circuit is detected, a pulse current having a peak value higher than the first current value is supplied at a plurality of times in the arc period. This suppresses porosities and spatters when galvanized steel sheets are welded.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: October 3, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Junji Fujiwara, Yasushi Mukai, Atsuhiro Kawamoto
  • Patent number: 9780687
    Abstract: The present invention provides a synchronous rectification converter circuit, including three transformer secondary-windings, three current transformer, a synchronous rectification switching unit, a diode rectification unit, and a control unit. Each of three current transformers includes a primary-winding and secondary-winding. The three transformer secondary-windings and the three current transformer primary-windings are alternately connected in series to form a first triangular structure. Three vertices of the first triangular structure are connected to the synchronous rectification switching unit. The three current transformer secondary-windings are connected in series to form a second triangular structure. Three vertices of the second triangular structure are connected to the diode rectification unit. The diode rectification unit is connected to the control unit and the synchronous rectification switching unit is connected to the control unit.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: October 3, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Wenbin Chen, Kui Zhou
  • Patent number: 9692326
    Abstract: A method and circuit for starting a three-phase motor in a manner that reduces inrush current normally associated with starting an AC motor. The method uses the circuit to start the three phase motor gradually with three phase alternating current having relatively low frequency and gradually increasing the frequency up to or above the motor operating frequency over a period of time and then switching in a steady state or static three phase alternating power supply to power the three phase motor.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: June 27, 2017
    Inventor: Glen Floreancig
  • Patent number: 9671123
    Abstract: An air conditioner having an indoor unit and an outdoor unit, at least one of which includes a communication unit, a switching unit turned on when communication lines are connected to the communication unit, turned off in a standby mode, and turned on when the standby mode is released, a voltage distribution unit distributing voltage applied to the communication unit when the switching unit is turned off, a voltage adjustment unit adjusting the voltage applied to the communication unit and transmitting the adjusted voltage to the communication unit, and a control unit turning the switching unit on when driving voltage is input to the control unit, turning the switching unit off when the at least one of the indoor unit and the outdoor unit enters the standby mode, and turning the switching unit on based on the voltage distributed by the voltage distribution unit in the standby mode.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: June 6, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong Gyu Lee, Ho Yoon, Jae Hun Choi, Tae Ha Jun
  • Patent number: 9662735
    Abstract: A method of operating a welding wire feeder includes receiving an input power from a welding power source, actuating a power relay to close and open a first current carrying path for application of the input power, and actuating bypass circuitry coupled in parallel to the power relay to close and open a second current carrying path in coordination with actuating the power relay. The method of operating the welding wire feeder also includes providing a welding wire to a welding torch.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: May 30, 2017
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventors: Anthony Van Bergen Salsich, Brian Lee Ott, Edward G. Beistle
  • Patent number: 9643275
    Abstract: The invention relates to a method for defining an interface (32, 42, 52, 62) of a welding power source (31, 41, 51, 61) for communication with an external machine (26) that is connected to the interface. A freely configurable interface is used in the welding device, said interface being configured and activated via software directly via the operating panel of the welding power source or an external device that can be connected to the welding power source. A parameter of the welding device is allocated to an internal and/or external connection (101 . . . 105). Optionally, a link is established by stringing together graphic symbols of the software. The invention further relates to a welding power source (31, 41, 51, 61) and to a computer program which are set up for performing or storing the process according to the invention.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: May 9, 2017
    Assignee: FRONIUS INTERNATIONAL GMBH
    Inventors: Bernhard Spisic, Thomas Eisenkolb, Patrick Kliemstein
  • Patent number: 9643273
    Abstract: A system is provided for configuring a delivery device of a cutting or welding apparatus. The system includes a determination module and a mobile computing device. The determination module is configured to determine at least one desired component of the delivery device or a value for at least one operating parameter of the cutting or welding apparatus. The mobile computing device includes a receiver, a reader and a processor. The receiver is configured to receive information from the determination module including at least one of i) identification of the desired component or ii) the value of the operating parameter. The reader is configured to read an element associated with a selected component, where the element provides indicia of at least one characteristic of the selected component. The processor is configure to approve the selected component for assembly into the delivery device.
    Type: Grant
    Filed: October 14, 2013
    Date of Patent: May 9, 2017
    Assignee: Hypertherm, Inc.
    Inventors: Richard Adams, Steve Bertken
  • Patent number: 9636765
    Abstract: Welding systems are presented, in which a single power source provides a first DC output to a plurality of digital waveform controlled chopper modules. Welding modules are also disclosed for converting an input DC signal to a welding signal, which are comprised of a down-chopper for providing a welding signal waveform according to a pulse width modulated switching signal, along with a digital waveform controller providing the switching signal according to a desired waveform.
    Type: Grant
    Filed: October 14, 2014
    Date of Patent: May 2, 2017
    Assignee: Lincoln Global, Inc.
    Inventor: Steven R. Peters
  • Patent number: 9615404
    Abstract: A consumable electrode arc welding method includes the detecting of a constriction formed in a molten droplet of the welding wire so as to reduce the welding current, the detecting of a smoothed value of the welding current, and the feedback controlling of the feed rate of the welding wire so as to make the smoothed value of the welding current correspond to a predetermined current setting value. The constriction detection is performed repetitively in a predetermined cycle. In each time of the repetition, the length of a constriction time, from the constriction detection till the arc generation, is measured. The number of constriction time lengths falling outside a predetermined range is counted. When the counted number is not less than a reference number, the transient response time of the feedback control is made longer.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: April 4, 2017
    Assignee: DAIHEN Corporation
    Inventors: Kento Takada, Toshiaki Nakamata
  • Patent number: 9603210
    Abstract: Various technologies presented herein relate to driving a LED such that the LED emits short duration pulses of light. This is accomplished by driving the LED with short duration, high amplitude current pulses. When the LED is driven by short duration, high amplitude current pulses, the LED emits light at a greater amplitude compared to when the LED is driven by continuous wave current.
    Type: Grant
    Filed: December 24, 2015
    Date of Patent: March 21, 2017
    Assignee: Sandia Corporation
    Inventor: Christopher R. Carlen
  • Patent number: 9570998
    Abstract: The disclosure relates to a capacitor arrangement for an input circuit or intermediate circuit of a voltage transformer comprising at least two capacitors and two connection nodes. Switching elements are provided, by means of which the at least two capacitors are connected in parallel with each other in a first operating state and are connected in series with each other in a second operating state. The disclosure also relates to a voltage transformer arrangement comprising such a capacitor arrangement and an operating method for a capacitor arrangement.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: February 14, 2017
    Assignee: SMA Solar Technology AG
    Inventors: Burkard Mueller, Jens Friebe
  • Patent number: 9548669
    Abstract: Methods and apparatuses for controlling synchronous start-up of power converters arranged in parallel in droop load share switched-mode power supplies are described. In one embodiment, a method may be performed by circuitry in a DC-DC power converter. The DC-DC power converter includes an inverting switch that converts input DC power to intermediate AC power, a transformer coupled to the inverting switch to receive the intermediate AC power and provide stepped-down AC power, and a synchronous rectifier coupled to the transformer to convert the stepped-down AC power to output DC power. The method comprises detecting that the inverting switch is not switching during start-up of the DC-DC power converter, and increasing a reference voltage set point of the DC-DC power converter in response to detecting that the inverting switch is not switching to force the inverting switch to start switching.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: January 17, 2017
    Assignee: Telefonaktiebolaget L M Ericsson (Publ)
    Inventor: Michael Nyström
  • Patent number: 9539662
    Abstract: A method of controlling a welding system includes controlling a weld current supplied to an electrode at a current ramp rate and determining an arc length based at least in part on the controlled weld current and a changing arc voltage. The arc length includes a distance between the electrode and a workpiece, and the arc voltage includes a voltage between the electrode and the workpiece.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: January 10, 2017
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventor: Richard Martin Hutchison
  • Patent number: 9506958
    Abstract: A method includes receiving data corresponding to a voltage level over time and a current level over time. The method also includes determining a first ratio corresponding to a voltage ramp percent or a voltage falling edge percent with respect to a peak in the voltage level and determining a second ratio corresponding to a current ramp ratio or a current falling edge ratio with respect to a peak in the current level. The method further includes determining, based on a comparison between the first ratio and the second ratio, whether to increment, decrement, or maintain an inductance compensation estimation value corresponding to an estimated inductance present in one or more secondary components associated with the welding operation.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: November 29, 2016
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventors: Robert R. Davidson, Thomas A. Bunker, Richard Schuh
  • Patent number: 9434018
    Abstract: An arc welding system and method where burnback time (BBT) is correlated to wire feed speed (WFS). Means for feeding a wire electrode toward a workpiece and means for selecting a wire feed speed (WFS) are provided. Also, means for automatically adjusting a burnback time (BBT) of the wire electrode in response to the selected wire feed speed (WFS) is provided.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: September 6, 2016
    Assignee: Lincoln Global, Inc.
    Inventors: Joseph A. Daniel, Elliott R. Ash
  • Patent number: 9272356
    Abstract: A feed control method is provided for consumable electrode AC arc welding, in which the welding wire is fed at a predetermined wire feed rate, and a welding voltage applied to an arc is switched in alternation between positive polarity and negative polarity. In the method, a welding current setting signal is generated. The wire is fed at a first feed rate during a period of the positive polarity, whereas the wire is fed at a second feed rate different from the first feed rate during a period of the negative polarity.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: March 1, 2016
    Assignee: DAIHEN Corporation
    Inventors: Tetsuo Era, Futoshi Nishisaka, Hiroyasu Mondori, Akihiro Ide
  • Patent number: 9236812
    Abstract: A universal AC to DC converter may be configured to convert alternating current (AC) to direct current (DC), such as for use in aerospace applications. The disclosure relates to a single universal power electronic converter capable of converting an AC input voltage, such as a line to neutral input voltage of either 115 Vrms or 230 Vrms nominal to 28 V DC.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: January 12, 2016
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Adam Michael White, Waleed M. Said, Mustansir Kheraluwala
  • Patent number: 9174294
    Abstract: A method for monitoring a spatter generating event during a welding application. The method includes capturing data that corresponds to a welding current of the welding application. The method also includes detecting parameters associated with a short circuit from the captured data. The method includes analyzing the detected parameters to monitor the spatter generating event during the welding application.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: November 3, 2015
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventors: Richard Martin Hutchison, Todd Earl Holverson, James Lee Uecker
  • Patent number: 9162321
    Abstract: A laser welding apparatus includes laser generator, arc generator, wire feeder, filler feeder, filler-feeding-abnormality detector, and controller. Controller stops welding immediately upon receiving a filler-feeding-abnormality signal from filler-feeding-abnormality detector. This can stop welding before the formation of a defective weld bead, and can also prevent the breakage of the welding apparatus.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: October 20, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Jing-bo Wang, Hitoshi Nishimura
  • Patent number: 9156104
    Abstract: A welding system is provided that includes a wearable wire feeder. The wearable wire feeder includes a control unit configured to generate a control signal and a wire drive responsive to the control signal. Another welding system is provided that includes a wearable wire feeder that includes a wire drive, a circuit configured to control a welding parameter, and a battery coupled to the circuit, the wire drive, or a combination thereof. In another embodiment, a welding system is provided that includes a wire drive, a control unit configured to control the wire drive and a gas control configured to control flow of a gas. A method is also provided that includes generating a control signal within a wearable wire feeder and driving a welding wire within the wearable wire feeder in response to the control signal.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: October 13, 2015
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventors: Michael G. Diedrick, Gregory C. Baeten
  • Patent number: 9144862
    Abstract: A welding system includes a welding wire feeder, a welding power supply, and a sensor. The power supply is coupled to the welding wire feeder and configured to produce a welding arc. The sensor is configured to sense a parameter indicative of a size of a welding wire fed through the welding wire feeder. The sensor is configured to send a signal to the power supply, the signal representing the parameter indicative of the size of the welding wire. The power supply is configured to automatically implement at least one of an arc starting parameter or a welding parameter based on the signal.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: September 29, 2015
    Assignee: ILLINOIS TOOL WORKS INC.
    Inventors: Bradley William Hemmert, Mark Steven Kadlec
  • Patent number: 9134358
    Abstract: A monitor for determining the operation condition of at least one cable that suffers bending and/or twisting and constitutes an electrical loop and a method thereof are provided. The monitor comprises a test electrical signal generator (5) for generating an identifiable test electrical signal and injecting the test electrical signal into the first point of the at least one cable, a test electrical signal filter (7) adapting to extract the injected test electrical signal from the second point of the at least one cable, and a comparator (8) for comparing a predetermined threshold with the difference between the electrical state of the injected test electrical signal and the extracted test electrical signal and producing a warning signal indicating cable fatigue when the difference exceeds the predetermined threshold.
    Type: Grant
    Filed: November 9, 2010
    Date of Patent: September 15, 2015
    Assignee: ABB RESEARCH LTD.
    Inventors: Gang Wu, Jens Hofschulte, JingGuo Ge
  • Patent number: 9101999
    Abstract: A system and a method are provided for improved run-in control during a start of a welding process. A power circuit generates welding output power. A control circuit in communication with the power circuit controls the output power. The control circuit receives a selection of a wire feed speed setting representing a wire feed speed. The control circuit receives a selection of a run-in setting representing a run-in percentage of the wire feed speed. The control circuit determines an effective run-in percentage that is equal to the run-in percentage plus an extra percentage.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: August 11, 2015
    Assignee: Victor Equipment Company
    Inventors: Roger H. Lambert, Geoffrey H. Putnam, Kevin Horner-Richardson
  • 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: 20150136746
    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: Application
    Filed: November 10, 2014
    Publication date: May 21, 2015
    Inventors: James Francis Rappl, Jeffery Ray Ihde, Kenneth Austin Stanzel, John C. Leisner
  • Patent number: 9035218
    Abstract: The invention relates to a method for disconnecting a short circuit (30) during short-arc welding, wherein when a short circuit (30) occurs, a time frame (32) is started, in which a defined current profile is performed to disconnect the short circuit within the time frame (32), and the current is increased if the time frame (32) is exceeded, and a corresponding welding device (1). In order to improve the welding quality, after the specifiable time frame (32) expires during a short circuit (30), said current profile for disconnecting the short circuit (30) is detected and at least one value or parameter in the disconnection of the short circuit (30) is stored or saved, wherein at least one value or parameter in the time frame (32) of the following short circuit (30) is adapted according to the stored value or parameter.
    Type: Grant
    Filed: July 23, 2010
    Date of Patent: May 19, 2015
    Assignee: Fronius International GmbH
    Inventor: Josef Artelsmair
  • Publication number: 20150129566
    Abstract: A system and method is provided in which a surface tension transfer welding function is employed where the welding waveform switches polarity during welding when a short circuit event is detected.
    Type: Application
    Filed: January 20, 2015
    Publication date: May 14, 2015
    Inventor: Steven R. Peters
  • Publication number: 20150122781
    Abstract: The welder interface described above may increase synergy with the welding system for the user. The welder interface receives input parameters of a desired weld from a user and advises a weld process and weld variables for producing the desired weld. The welder interface may be integral with a component of the welding system, or a separate component that may be coupled with the welding system. The welder interface may utilize data from a look-up table, neural network, welding procedure system, or database to advise the weld process and weld variables. The user may utilize the welder interface to simulate the weld process and the effect of the weld variables on a simulated weld. The user may modify the input parameters prior to producing a weld, and the user may modify the weld variables after reviewing the results of the produced weld for subsequent welding applications.
    Type: Application
    Filed: October 31, 2014
    Publication date: May 7, 2015
    Inventor: Bruce Patrick Albrecht