Patents by Inventor William A. Fewless

William A. Fewless 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).

  • Method of replacing a worn excavating tooth point
    Patent number: 5074062
    Abstract: A method of replacing a worn point of an excavating tooth wherein the point is held in place by a pin lock including a shearable top flange and torque-resisting, forwardly extending rib, the method including exerting a downward force on the pin lock to shear the top flange while the forwardly extending rib guides the pin lock downwardly and out of locking engagement with aligned slots in the tooth adapter nose and point rearwardly extending ear, removing the worn point and installing a new point along with a new pin lock including a top flange and forwardly extending rib.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: December 24, 1991
    Assignee: Esco Corporation
    Inventors: Frederick C. Hahn, Kirk E. Yoresen, William A. Fewless, Robert K. Emrich, Michael J. Secrist