Patents by Inventor Lawrence J. Lang

Lawrence J. Lang 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).

  • Programmable friction stir welding process
    Patent number: 5713507
    Abstract: A variable pin length stir friction welding method wherein the stir friction welding pin penetrates the workpiece as the workpiece translates. The stir friction welding pin starting at a zero penetration and extending to the depth needed to repair a weld or to make a weld. Then withdrawing the pin to zero penetration as the work is translated. The weld path is thus ramped into and out of the workpiece leaving no holes which need to be repaired. Circumferential welds can be made by keeping the pin extended to the welding depth for at least one complete revolution of the weld.
    Type: Grant
    Filed: March 21, 1996
    Date of Patent: February 3, 1998
    Assignee: Rockwell International Corporation
    Inventors: Elmo S. Holt, Lawrence J. Lang