Patents by Inventor Timothy Mark O'Donnell

Timothy Mark O'Donnell 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