Patents by Inventor Robert D. Bertin

Robert D. Bertin 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).

  • Mud motor
    Patent number: 6527512
    Abstract: A fluid powered drilling motor adapted for drilling oil wells and other subterranean bore holes. The motor having a rotor and a stator wherein the iron content of the whole motor is less than 0.1% wt. In one embodiment the motor is made of an alloy having a base metal comprising one of copper, nickel, and aluminum plus about 0.05-10 wt % Beryllium. In another embodiment, the motor is made of either 15Ni-8SN—Cu or 9Ni-6Sn—Cu.
    Type: Grant
    Filed: March 1, 2001
    Date of Patent: March 4, 2003
    Assignee: Brush Wellman, Inc.
    Inventors: Robert D. Bertin, William D. Nielsen, Jr., Diane M. Ryan
  • Mud motor
    Publication number: 20020122722
    Abstract: An improved mud motor for drilling bore holes in subterranean formations is formed from a non-magnetic alloy containing no more than 0.1 wt. % iron.
    Type: Application
    Filed: March 1, 2001
    Publication date: September 5, 2002
    Inventors: Robert D. Bertin, William D. Nielsen, Diane M. Ryan
  • Graphite brazing fixture coated with composite layers of titanium carbide and titanium nitride
    Patent number: 4892788
    Abstract: A brazing fixture for use in the electronics industry which resists adherence of brazing compounds and insulative materials during the brazing operation and a method for making and using the same. The fixture is characterized in that it is made from a graphite substrate coated with a composite layer of titanium carbide and titanium nitride.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: January 9, 1990
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Michael B. Miller, Robert D. Bertin