Patents by Inventor Michael A. Yoshimune

Michael A. Yoshimune 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 adjustable bent-angle mechanism for use with a motor for directional drilling
    Patent number: 7909117
    Abstract: A housing including longitudinally extending tubular members interconnected to allow controlled relative bending thereof, during a drilling operation, a rotary drive transmitting torsion bar extending generally longitudinally within the housing to controllably bend in response to relative bending of said members, a rotary drill bit operatively connected to said torsion bar to be rotated as the bar rotates, a rotary drive operatively connected to the torsion bar to rotate the bar, means for controlling relative bending of the said members during torsion bar rotation and as a function of such rotation.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: March 22, 2011
    Assignee: Scientific Drilling International Inc.
    Inventors: Donald H. Van Steenwyk, Dennis J. Buckley, James R. Higginbotham, Mark Chustz, Raymond W. Teys, Michael A. Yoshimune
  • Downhole adjustable bent-angle mechanism for use with a motor for directional drilling
    Publication number: 20100032212
    Abstract: A housing including longitudinally extending tubular members interconnected to allow controlled relative bending thereof, during a drilling operation, a rotary drive transmitting torsion bar extending generally longitudinally within the housing to controllably bend in response to relative bending of said members, a rotary drill bit operatively connected to said torsion bar to be rotated as the bar rotates, a rotary drive operatively connected to the torsion bar to rotate the bar, means for controlling relative bending of the said members during torsion bar rotation and as a function of such rotation.
    Type: Application
    Filed: August 6, 2008
    Publication date: February 11, 2010
    Inventors: Donald H. Van Steenwyk, Dennis J. Buckley, James R. Higginbotham, Mark Chustz, Raymond W. Teys, Michael A. Yoshimune