Patents Represented by Attorney, Agent or Law Firm Joseph Byrne
  • Method and apparatus for submerged arc welding
    Patent number: 6399912
    Abstract: A welding apparatus for submerged arc welding is disclosed. The welding apparatus includes a welding power supply and a wire feeder in electrical communication with the power supply. A torch is in electrical communication with the power supply and is adapted to deliver an electrode wire from the wire feeder to an arc. A flux system having a flow path for delivering flux to the arc includes a pinch valve disposed to open and close the flow path.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: June 4, 2002
    Assignee: Illinois Tool Works Inc.
    Inventors: Robert D. Steenis, David J. Lease