Patents by Inventor John T. Larson

John T. Larson 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).

  • Stress control for termination of a high voltage cable
    Patent number: 6340794
    Abstract: A two-part system for electrical stress control includes a conformable stress control material positioned at the shield cut edge of a prepared power cable and a stress control tube over the conformable stress control material. A second region of conformable stress control material is positioned adjacent the cut end of the insulation. Relationships are revealed which relate the permittivity and dimensional parameters of the two components.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: January 22, 2002
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert A. Wandmacher, Lawrence C. Chor, John T. Larson
  • Stress control for termination of a high voltage cable
    Patent number: 6015629
    Abstract: A two-part system for electrical stress control includes a non-tacky conformable stress control material that is positioned at the shield cut edge of a prepared power cable and a stress control tube over the non-tacky conformable stress control material. A second region of conformable stress control material is positioned adjacent the cut end of the insulation.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: January 18, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Thomas J. D. Heyer, Robert A. Wandmacher, Lawrence C. Chor, John T. Larson