Patents by Inventor Richard W. Case

Richard W. Case 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).

  • Shock absorber for oil well pumping unit
    Patent number: 4176714
    Abstract: A shock absorber for use to interconnect the polish rod of an oil well with the pumping unit in which the pumping unit includes a hanger bar having an opening therein receiving the polish rod, the shock absorber employing a tubular body axially receiving the polish rod, the body being supported on the hanger bar, and the body including a plurality of discs of elastomeric material, each having openings therein, and including a top plate secured to the polish rod with a polish rod clamp so that on up stroke of the pumping unit the elastomeric members are pressed and the openings therein form an air cushion to assist in alleviating shock transition from the polish rod to the pumping unit.
    Type: Grant
    Filed: June 15, 1978
    Date of Patent: December 4, 1979
    Assignee: K-Shox, Inc.
    Inventor: Richard W. Case