Patents by Inventor Robert K. Sorenson

Robert K. Sorenson 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).

  • Journal and pilot bearings with alternating surface areas of wear resistant and anti-galling materials
    Patent number: 4207658
    Abstract: The journal and/or pilot bearings of a rotary cone earth boring bit are constructed to include alternating areas of wear resistant materials and anti-galling materials. The bearing matrix is formed by compressing a powdered alloy in the shape of the desired bearing element. The bearing matrix is sintered, thereby forming a porous bearing element. An anti-galling material is infiltrated into the porous matrix of the bearing element and the bearing element is hardened. The resulting bearing element includes areas of water resistant materials and areas of anti-galling materials.
    Type: Grant
    Filed: May 22, 1978
    Date of Patent: June 17, 1980
    Assignee: Dresser Industries, Inc.
    Inventor: Robert K. Sorenson