Patents by Inventor Robert J. Penberthy

Robert J. Penberthy 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).

  • Depth gauge for a cutter
    Patent number: 5974933
    Abstract: A depth gauge leading the cutting edge in a cutter device has a body portion disposed in a substantially upright plane. The depth gauge includes a top plate portion cantilevered laterally over the body. A juncture section joins the depth gauge plate portion to the body of the cutter and is deformed intermediate its front and rear ends to strengthen the depth gauge against breakage.
    Type: Grant
    Filed: May 5, 1997
    Date of Patent: November 2, 1999
    Assignee: Blount, Inc.
    Inventors: James O. Burrows, Randall D. Jensen, Kent L. Huntington, Robert J. Penberthy
  • Chain saw guide bar with identifying indicia
    Patent number: 5649367
    Abstract: A chain saw guide bar having identifying indicia to aid in the selection of a replacement guide bar and/or saw chain. A colored insert is installed in an aperture of the guide bar. The insert is colored to indicate the proper type of chain for the guide bar. Characters are stamped into the insert to indicate the mounting tail of the guide bar and the length of the saw chain required for the guide bar.
    Type: Grant
    Filed: May 16, 1996
    Date of Patent: July 22, 1997
    Assignee: Blount, Inc.
    Inventors: Arvin A. Hille, Robert J. Penberthy
  • Saw chain grinder fixture
    Patent number: 4019407
    Abstract: A rod having one end adapted to be secured in the chuck of a power tool, said rod having a grinding portion for sharpening the cutting edge of a saw chain cutting link when rotatively driven by the power tool, and a guide fixture supported on said rod including guide surfaces adapted to rest on the top plate and depth gauge of the cutting link and thereby locate the grinding portion of the rod for proper sharpening of the cutting edge of the saw chain.
    Type: Grant
    Filed: October 29, 1975
    Date of Patent: April 26, 1977
    Assignee: Omark Industries, Inc.
    Inventor: Robert J. Penberthy