Patents by Inventor Jon C. Hummel

Jon C. Hummel 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).

  • Method and apparatus for welding tubular members
    Patent number: 5711474
    Abstract: A method and apparatus for welding two tubular members together in butting relation is described. The method and apparatus include apparatus capable of delivering a purge gas to a zone adjacent the inner surface of the tubular members and effecting relative movement between the tubular members and a welding torch to weld the butting ends of the tubular members together.
    Type: Grant
    Filed: December 14, 1995
    Date of Patent: January 27, 1998
    Inventor: Jon C. Hummel
  • Expandable tool for holding and aligning pipes to be welded
    Patent number: 5609291
    Abstract: An expandable tool for holding and aligning pipes to be welded together is disclosed. The tool includes an annual array of radially movable gripping elements for engagement with the interior wall of the pipes to be welded. A wedge is mounted for axial movement relative to the gripping elements to effect selective radial outward movement of the gripping elements to align and hold the pipes for welding. The gripping elements are provided with passageways for delivery gas to preselected zones between the gripping elements and the interior wall surfaces of the pipes in the regions to be welded.
    Type: Grant
    Filed: April 20, 1995
    Date of Patent: March 11, 1997
    Inventor: Jon C. Hummel
  • Expandable tool for holding aligning pipes to be welded
    Patent number: 5538173
    Abstract: An expandable tool for holding and aligning pipes to be welded together is disclosed. The tool includes an annual array of radially movable gripping elements for engagement with the interior wall of the pipes to be welded. A wedge is mounted for axial movement relative to the gripping elements to effect selective radial outward movement of the gripping elements to align and hold the pipes for welding. The gripping elements are provided with passageways for delivery gas to preselected zones between the gripping elements and the interior wall surfaces of the pipes in the regions to be welded.
    Type: Grant
    Filed: January 10, 1995
    Date of Patent: July 23, 1996
    Inventor: Jon C. Hummel