Patents by Inventor Edward R. Hemphill

Edward R. Hemphill 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).

  • Removable seal carrier for blowout preventer bonnet assembly
    Patent number: 7699554
    Abstract: A bonnet assembly for a blowout preventer uses a seal carrier that is removable so as to allow for efficient and easy seal replacement. The seal carrier has: a recess adapted to at least partially embed a seal for sealing the bonnet assembly to a body of the blowout preventer; and a first connecting rod coupled to and extending from an inner surface of the seal carrier, where the first connecting rod has a fastening structure proximal to a distal end of the first connecting rod, where the fastening structure is adapted to engage with a first fastening device, and where the seal carrier is removable from the bonnet assembly when the first fastening device is disengaged from the fastening structure.
    Type: Grant
    Filed: June 3, 2003
    Date of Patent: April 20, 2010
    Assignee: Hydril USA Manufacturing LLC
    Inventors: Edward R. Hemphill, William R. Holland, Michael W. Berckenhoff
  • Removable seal carrier for blowout preventer bonnet assembly
    Publication number: 20040258470
    Abstract: A bonnet assembly for a blowout preventer uses a seal carrier that is removable so as to allow for efficient and easy seal replacement. The seal carrier has: a recess adapted to at least partially embed a seal for sealing the bonnet assembly to a body of the blowout preventer; and a first connecting rod coupled to and extending from an inner surface of the seal carrier, where the first connecting rod has a fastening structure proximal to a distal end of the first connecting rod, where the fastening structure is adapted to engage with a first fastening device, and where the seal carrier is removable from the bonnet assembly when the first fastening device is disengaged from the fastening structure.
    Type: Application
    Filed: June 3, 2003
    Publication date: December 23, 2004
    Inventors: Edward R. Hemphill, William R. Holland, Michael W. Berckenhoff