Patents by Inventor Thomas G. Cassity

Thomas G. Cassity 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).

  • Tubing packer
    Patent number: 4749035
    Abstract: An improved tubing packer including a sleeve connected in the tubing string and having an outer diameter close to the inner diameter of the string into which it is to seal and a plurality of external grooves having pressure compensating material therein, a liner within the sleeve and spaced therefrom, pressure responsive piston between said sleeve and said liner, the pressure responsive piston and said sleeve having coacting multiple camming surfaces which coact to force the sleeve outward into tight gripping and sealing engagement with the interior of the well string and a source of pressure fluid supplied to the pressure responsive piston.
    Type: Grant
    Filed: April 30, 1987
    Date of Patent: June 7, 1988
    Assignee: Cameron Iron Works USA, Inc.
    Inventor: Thomas G. Cassity
  • Apparatus for use in replacing broken guidelines
    Patent number: 3967460
    Abstract: Apparatus is disclosed which permits a broken guideline which normally extends upwardly from an underwater guidepost to be cut and replaced in one trip.
    Type: Grant
    Filed: March 21, 1975
    Date of Patent: July 6, 1976
    Assignee: Cameron Iron Works, Inc.
    Inventor: Thomas G. Cassity