Patents by Inventor Torbjorn Stansen Bergstrom

Torbjorn Stansen Bergstrom 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).

  • Portable friction testing device
    Patent number: 7788965
    Abstract: A portable device for measuring friction, especially friction between tire treads and road surfaces is disclosed. The portable friction tester is shaped as an equilateral triangle providing three points of contact for samples in the road surface.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: September 7, 2010
    Assignee: The Goodyear Tire + Rubber Company, Inc.
    Inventors: William Allen Arnold, Chenghsiung Lin, Christopher Aldrich Brown, Torbjorn Stansen Bergstrom, Douglas Jeffrey Geiger
  • Portable Friction Testing Device
    Publication number: 20090107210
    Abstract: A portable device for measuring friction, especially friction between tire treads and road surfaces is disclosed. The portable friction tester is shaped as an equilateral triangle providing three points of contact for samples in the road surface.
    Type: Application
    Filed: October 31, 2007
    Publication date: April 30, 2009
    Inventors: William Allen Arnold, Chenghsiung Lin, Christopher Aldrich Brown, Torbjorn Stansen Bergstrom, Douglas Jeffrey Geiger