Patents by Inventor Joe Liu C. Liu

Joe Liu C. Liu 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).

  • Modular motor and housing
    Patent number: 6794788
    Abstract: A modular electric motor. The modular motor includes a plurality of mechanically and electrically coupleable stator sections and mechanically coupleable housing sections. At least one stator section has conductors extending longitudinally therethrough for generating a magnetic field to impart rotative motion in a rotor. A given motor may be assembled to a variety of desired lengths by mechanically and electrically coupling the appropriate number of motor sections. This facilitates construction of a desired horsepower motor for a given application.
    Type: Grant
    Filed: May 26, 2000
    Date of Patent: September 21, 2004
    Assignee: Schlumberger Technology Corporation
    Inventors: Stephen D. Smith, Joe Liu C. Liu, Rick Bailey, Roy Fleshman