Patents by Inventor Thomas Hergarden

Thomas Hergarden 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).

  • Temporary abandonment cap
    Patent number: 6845815
    Abstract: A temporary abandonment cap includes a body, a pressure-retaining top portion extending across the body and a plurality of locking pins coupled to the body and a single moveable handle, the locking pins being adapted to be moved from an engaged position to a disengaged position by movement of the single handle. The temporary abandonment cap is lightweight, reusable, and can be placed on and retrieved from an open pipe of a subsea well.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: January 25, 2005
    Assignee: FMC Technologies, Inc.
    Inventors: Thomas Hergarden, Richard Murphy, Paul Riley
  • Temporary abandonment cap
    Publication number: 20040040702
    Abstract: The present invention is directed to a lightweight, reusable temporary abandonment cap that can be placed on and retrieved from an open pipe of a subsea well. The invention is further comprised of a body, a pressure-retaining top portion extending across the body and a plurality of locking pins coupled to the body and a single moveable handle, the locking pins being adapted to be moved from an engaged position to a disengaged position by movement of the single handle.
    Type: Application
    Filed: August 27, 2002
    Publication date: March 4, 2004
    Inventors: Thomas Hergarden, Richard Murphy, Paul Riley