Patents by Inventor Marvin R. Jones

Marvin R. Jones 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).

  • Annular blowout preventer
    Patent number: 4007904
    Abstract: There is disclosed an annular blowout preventer wherein a packer, received within a recess about a bore through the preventer housing, is adapted to be contracted by means of a piston having an annulus of resilient material movable inwardly within a chamber surrounding the recess and divided therefrom by a wall of the housing, and a disc-shaped member of resilient material extending through and sealably slidable within a slot in the wall to transmit the inward movement of the piston to the packer.
    Type: Grant
    Filed: March 28, 1975
    Date of Patent: February 15, 1977
    Assignee: Cameron Iron Works, Inc.
    Inventor: Marvin R. Jones
  • Pipe disconnecting apparatus
    Patent number: 3957113
    Abstract: Apparatus for disconnecting the lower threaded end of an upper section from the upper threaded end of a lower section of pipe string extending through the bore of an underwater wellhead.
    Type: Grant
    Filed: May 6, 1974
    Date of Patent: May 18, 1976
    Assignee: Cameron Iron Works, Inc.
    Inventors: Marvin R. Jones, Paul E. Helfer