Patents by Inventor Shellie O. Williamson

Shellie O. Williamson 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).

  • Apparatus for rotating of track bushing by combined static and dynamic torque
    Patent number: 4202224
    Abstract: For use in rotating a bushing of an assembled track, wherein the bushing is press-fitted into apertures of a pair of links, first and second members are securable to one and the other of such pair of links, and a rapidly extendable and retractable cylinder interconnects the first and second members for providing a vibratory motion which, for optimum results, should be at resonant frequency to the links while rotational torque is being applied to such bushing.
    Type: Grant
    Filed: May 24, 1978
    Date of Patent: May 13, 1980
    Assignee: Caterpillar Tractor Co.
    Inventors: James A. Hooker, Dean W. Martin, Shellie O. Williamson