Patents by Inventor Thomas Oskamp

Thomas Oskamp 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).

  • U-joint for a downhole motor drive shaft
    Patent number: 9915106
    Abstract: A downhole motor drive shaft assembly includes a drive shaft having a longitudinal rotational axis, a plurality of drive key sockets, an end housing having a longitudinal rotational axis, a plurality of circumferentially spaced axial keyways, and a concave spherical thrust bearing surface, and a drive key operatively connecting each drive key socket with a respective axial keyway for transferring torque from the drive shaft to the end housing. The drive key includes a substantially planar drive face slidably engaging the axial keyway, and a radiused, cylindrical back portion rotatably engaging the drive key socket, the substantially planar drive face and radiused, cylindrical back portion forming a nominal half-circle.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: March 13, 2018
    Assignee: SMITH INTERNATIONAL, INC.
    Inventors: Lance D. Underwood, Eric T. Johnson, Thomas Oskamp