Patents by Inventor Richard Butland

Richard Butland 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).

  • Cutting element structure for roller cone bit
    Patent number: 7152701
    Abstract: A roller cone drill bit includes a bit body adapted to be coupled to a drill string, a bearing journal depending from the bit body, and a single roller cone rotatably attached to the bearing journal. The single roller cone has a plurality of cutting elements, where at least one of the plurality of cutting elements is formed of an inner region that is at least partially surrounded by an outer region, where the inner region is more abrasive resistant than the outer region. Such an arrangement in a single roller cone bit allows the at least one cutting element to be “self-sharpening.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: December 26, 2006
    Assignee: Smith International, Inc.
    Inventors: Richard Butland, John J. Herman, Ronald Birne-Browne, Per Nese, Louis Loiselle, J. Daniel Belnap
  • Cutting element arrangement for single roller cone bit
    Publication number: 20050109543
    Abstract: A cutting element arrangement for a single roller cone bit includes both at least one substantially non-planar cutting element and at least one substantially planar cutting element. The substantially non-planar cutting element is disposed on an inner row of the single roller cone and the substantially planar cutting element is disposed on an outer row of the single roller cone. With such an arrangement, the substantially non-planar inner row cutting elements effectively penetrate formations while the substantially planar outer row cutting elements maintain bore hole gage.
    Type: Application
    Filed: June 18, 2004
    Publication date: May 26, 2005
    Inventors: George Witman, Peter Wilson, Richard Butland, Dan Belnap, John Herman, Ronald Birne-Browne, Per Nese, Louis Loiselle
  • Cutting element structure for roller cone bit
    Publication number: 20050077091
    Abstract: A roller cone drill bit includes a bit body adapted to be coupled to a drill string, a bearing journal depending from the bit body, and a single roller cone rotatably attached to the bearing journal. The single roller cone has a plurality of cutting elements, where at least one of the plurality of cutting elements is formed of an inner region that is at least partially surrounded by an outer region, where the inner region is more abrasive resistant than the outer region. Such an arrangement in a single roller cone bit allows the at least one cutting element to be “self-sharpening.
    Type: Application
    Filed: August 17, 2004
    Publication date: April 14, 2005
    Inventors: Richard Butland, Daniel Belnap, John Herman, Ronald Birnie-Browne, Per Nese, Louis Loiselle