Patents by Inventor DAVID HOLDMAN

DAVID HOLDMAN 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).

  • Downhole drilling motor with an adjustment assembly
    Patent number: 10233700
    Abstract: An embodiment includes a downhole motor configured to operate a drill bit to drill a well into an earthen formation. The downhole motor includes a motor housing, a stator supported by an inner surface of the motor housing, a rotor operably coupled to the stator. The rotor is configured to be operably coupled to the drill bit. The motor housing includes an uphole portion, a bend, and a downhole portion that extends relative to bend away from the uphole portion in a downhole direction. The downhole motor includes an adjustment assembly that can guide the direction of drilling.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: March 19, 2019
    Assignee: APS Technology, Inc.
    Inventors: Bill Murray, David Holdman, Mark Ellsworth Wassell
  • DOWNHOLE DRILLING MOTOR WITH AN ADJUSTMENT ASSEMBLY
    Publication number: 20160290050
    Abstract: An embodiment includes a downhole motor configured to operate a drill bit to drill a well into an earthen formation. The downhole motor includes a motor housing, a stator supported by an inner surface of the motor housing, a rotor operably coupled to the stator. The rotor is configured to be operably coupled to the drill bit. The motor housing includes an uphole portion, a bend, and a downhole portion that extends relative to bend away from the uphole portion in a downhole direction. The downhole motor includes an adjustment assembly that can guide the direction of drilling.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 6, 2016
    Inventors: BILL MURRAY, DAVID HOLDMAN, MARK ELLSWORTH WASSELL