Patents by Inventor Per Olaf Haughom

Per Olaf Haughom 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).

  • Down hole motors and methods for their operation
    Patent number: 6607043
    Abstract: A down hole motor assembly includes a hydraulic drive portion, a drill bit operatively connected to the drive portion and a disengage mechanism (11) arranged to disengage drive to the drill bit. The disengage mechanism (11) is arranged to be actuated by supplying drilling fluid to the drive portion at a flow rate which is greater than the flow rate at which fluid is supplied to run the drive portion during normal drilling. The disengage mechanism is arranged to be re-set so that drive is reconnected to the drill bit when the fluid supply to the drive portion is shut off.
    Type: Grant
    Filed: July 2, 2001
    Date of Patent: August 19, 2003
    Assignee: Den Norske Stats Oljeselskap A.S.
    Inventors: Egil Sunde, Per Olaf Haughom