Patents by Inventor Alonzo P. O. Yost

Alonzo P. O. Yost has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Modified series arc welding and improved control of one sided series arc welding
    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
  • Modified Series Arc Welding And Improved Control of One Sided Series Arc Welding
    Publication number: 20150041448
    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: Application
    Filed: October 24, 2014
    Publication date: February 12, 2015
    Inventors: Timothy Mark O'Donnell, Stephen Richard Cole, Alonzo P.O. Yost
  • Modified series arc welding and improved control of one sided series arc welding
    Patent number: 8895896
    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: June 20, 2011
    Date of Patent: November 25, 2014
    Assignee: Lincoln Global, Inc.
    Inventors: Timothy M O'Donnell, Stephen R Cole, Alonzo P. O. Yost
  • Electric arc welder
    Patent number: 8519302
    Abstract: An electric arc welder for depositing weld metal along a groove between two edges of a metal workpiece where the welder comprises a first electrode driven by a first wire feeder toward a point in said groove, a second electrode driven by a second wire feeder toward the point and a main power source with a first output terminal connected to the first electrode and a second output terminal connected both to the second electrode and directly or indirectly to the metal workpiece to create a second electrode path and a workpiece path. The power source includes a high speed switching output stage for creating current with a selected AC waveform between the first and second output terminals where the waveform of the main power source is generated by a waveform generator controlling a pulse width modulator circuit to determine the current operation of the output stage.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: August 27, 2013
    Assignee: Lincoln Global, Inc.
    Inventors: Russell K. Myers, Timothy M. O'Donnell, Alonzo P. O. Yost
  • MODIFIED SERIES ARC WELDING AND IMPROVED CONTROL OF ONE SIDED SERIES ARC WELDING
    Publication number: 20110309062
    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: Application
    Filed: June 20, 2011
    Publication date: December 22, 2011
    Applicant: Lincoln Global, Inc.
    Inventors: Timothy M O'Donnell, Stephen R Cole, Alonzo P.O. Yost
  • Electric arc welder
    Patent number: 7105773
    Abstract: An electric arc welder for depositing weld metal along a groove between two edges of a metal workpiece where the welder comprises a first electrode driven by a first wire feeder toward a point in said groove, a second electrode driven by a second wire feeder toward the point and a main power source with a first output terminal connected to the first electrode and a second output terminal connected both to the second electrode and directly or indirectly to the metal workpiece to create a second electrode path and a workpiece path. The power source includes a high speed switching output stage for creating current with a selected AC waveform between the first and second output terminals where the waveform of the main power source is generated by a waveform generator controlling a pulse width modulator circuit to determine the current operation of the output stage.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: September 12, 2006
    Assignee: Lincoln Global, Inc.
    Inventors: Russell K. Myers, Timothy M. O'Donnell, Alonzo P. O. Yost