Patents by Inventor Roy K. Holbert

Roy K. Holbert 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).

  • Friction processing weld preparation
    Patent number: 7122761
    Abstract: A weld preparation process that translates a consumable or nonconsumable tool over an area that is subsequently to be welded to impart friction heating to the surface. Rotary or linearly oscillated motion between the tool and the workpiece is used to generate heat and produce deformation in the surface, resulting in recrystallization of the area being processed and a compressive residual stress.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: October 17, 2006
    Assignee: Siemens Power Generation, Inc.
    Inventors: Peter J. Ditzel, Roy K. Holbert, Jr.
  • Friction processing weld preparation
    Publication number: 20040089646
    Abstract: A weld preparation process that translates a consumable or nonconsumable tool over an area that is subsequently to be welded to impart friction heating to the surface. Rotary or linearly oscillated motion between the tool and the workpiece is used to generate heat and produce deformation in the surface, resulting in recrystallization of the area being processed and a compressive residual stress.
    Type: Application
    Filed: November 12, 2002
    Publication date: May 13, 2004
    Applicant: Siemens Westinghouse Power Corporation
    Inventors: Peter J. Ditzel, Roy K. Holbert