Patents by Inventor Gary L. Greenfield

Gary L. Greenfield 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).

  • Patent number: 5687799
    Abstract: In the operation of a landfill compactor it is a common problem for the wheels to pick up debris, especially wire and cable, and carry it around the wheel as they rotate. When the debris falls from the wheels in the direction toward the frame and the axles, it becomes packed between the frame and the axle hampering machine operation and requiring hours of corrective maintenance. The wheel assembly of the subject invention provides teeth that are positioned across the width of the wheel assembly in a plurality of rows. The outermost row is positioned adjacent the outer periphery of the wheel assembly while the innermost row is spaced from the inner periphery a preselected distance (X).
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: November 18, 1997
    Assignee: Caterpillar Inc.
    Inventors: Gary L. Greenfield, Harvey A. Knell, David O. Philips, James M. Retterer