Patents by Inventor Jeffrey S. Meister

Jeffrey S. Meister 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).

  • Rotating control device with multiple seal cartridge
    Patent number: 11236575
    Abstract: The disclosure relates to a rotating control device used in a drilling system having a non-rotating tubular RCD housing enclosing an elongate passage. A mandrel rotatably extends along the passage about an axis. A seal assembly seals the RCD housing to the mandrel and provides first and second seals against the mandrel's exterior surface. The first and second seals are spaced parallel to the mandrel's axis to create space between the mandrel and the first and second seals. The first seal has a first side exposed to fluid pressure in the RCD housing and a second side exposed to fluid in the space between the seals. The second seal has a first side exposed to fluid pressure in the space between the seals and a second side exposed to fluid pressure at the exterior of the RCD housing. A pressure stepping mechanism supplies fluid to the space between the two seals.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: February 1, 2022
    Assignee: NTDrill Holdings, LLC
    Inventors: Earl Dietrich, Christian Leuchtenberg, Philip J. Engelman, Jeffrey S. Meister, Daniel E. Sabelko, Nicolas A. Haugen
  • Rotating Control Device with Multiple Seal Cartridge
    Publication number: 20200232297
    Abstract: The disclosure relates to a rotating control device used in a drilling system having a non-rotating tubular RCD housing enclosing an elongate passage. A mandrel rotatably extends along the passage about an axis. A seal assembly seals the RCD housing to the mandrel and provides first and second seals against the mandrel's exterior surface. The first and second seals are spaced parallel to the mandrel's axis to create space between the mandrel and the first and second seals The first seal has a first side exposed to fluid pressure in the RCD housing and a second side exposed to fluid in the space between the seals. The second seal has a first side exposed to fluid pressure in the space between the seals and a second side exposed to fluid pressure at the exterior of the RCD housing. A pressure stepping mechanism supplies fluid to the space between the two seals.
    Type: Application
    Filed: January 16, 2020
    Publication date: July 23, 2020
    Applicant: NTDrill Holdings, LLC
    Inventors: Earl Dietrich, Christian Leuchtenberg, Phil J. Engelman, Jeffrey S. Meister, Daniel E. Sabelko, Nicolas A. Haugen