Patents by Inventor Stephen King Madden

Stephen King Madden 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).

  • Auxiliary welding heating system
    Patent number: 11072035
    Abstract: An auxiliary welding heating system includes an induction heating coil disposed adjacent to a welding torch or plasma cutter. The auxiliary welding heating system further includes an induction power supply configured to generate an alternating current and a step-down transformer coupled to the induction power supply. The induction heating coil is coupled to the step-down transformer and is configured to receive the alternating current and induce eddy currents in a welding work piece to heat the welding work piece before an advancing welding arc or plasma cut to a homologous temperature of at least approximately 0.5.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: July 27, 2021
    Assignee: Illinois Tool Works Inc.
    Inventors: Todd Earl Holverson, Jerald Edward Jones, Valerie Lisa Rhoades, Stephen King Madden
  • AUXILIARY WELDING HEATING SYSTEM
    Publication number: 20110284527
    Abstract: An auxiliary welding heating system includes an induction heating coil disposed adjacent to a welding torch or plasma cutter. The auxiliary welding heating system further includes an induction power supply configured to generate an alternating current and a step-down transformer coupled to the induction power supply. The induction heating coil is coupled to the step-down transformer and is configured to receive the alternating current and induce eddy currents in a welding work piece to heat the welding work piece before an advancing welding arc or plasma cut to a homologous temperature of at least approximately 0.5.
    Type: Application
    Filed: May 19, 2011
    Publication date: November 24, 2011
    Applicant: Illinois Tool Works Inc.
    Inventors: Todd Earl Holverson, Jerald Edward Jones, Valerie Lisa Rhoades, Stephen King Madden