Patents by Inventor Duane Clanton

Duane Clanton 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: 5503234
    Abstract: A drilling and hoisting system that mounts a rotating elevator, providing lift and rotation for a drill string, on a horizontal platform assembly, together with all necessary drive motors and ancillary pipe handling equipment. This platform is suspended from balanced dual crown blocks driven by a double drum draw works. This rotary elevator platform opens up the center of the drill rig for pipe handling. Pipe is handled by the elevator by gripping the pipe at a tool joint; the pipe stand may extend above the rotary elevator. A keyhole in the crown assembly of the drill rig passes the upper end of pipe stands to a light weight stand jib crane which racks pipe stands against a ground level pipe rack. The height of the rig mast no longer limits the maximum length of pipe stand which can be handled, and four section stands can be handled in a rig having a mast under 100 feet high.
    Type: Grant
    Filed: September 30, 1994
    Date of Patent: April 2, 1996
    Inventor: Duane Clanton