Patents by Inventor Billy W. McArthur

Billy W. McArthur 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).

  • Elastomeric inclinometer
    Patent number: 4069591
    Abstract: Information as to borehole inclination is provided by a pendulum in combination with an elastomeric material whose resistance varies with compression. The pendulum is arranged in a housing to compress the elastomer whenever the housing deviates from the vertical, or other predetermined attitude. The change in resistance is measured by a circuit including an ohmmeter and the pendulum and elastomer as conductive elements.
    Type: Grant
    Filed: March 15, 1976
    Date of Patent: January 24, 1978
    Assignee: Sperry-Sun, Inc.
    Inventor: Billy W. McArthur
  • Borehole pressure measurement
    Patent number: 4010642
    Abstract: A pressure measurement system particularly suited to use in boreholes uses a pressure source at the surface to supply a test fluid through a small tube to a large downhole chamber having a fluid port on its bottom side. The test fluid displaces borehole fluid from the chamber after which the pressure of the test fluid is measured at the surface, thereby indicating the pressure of the borehole fluid.
    Type: Grant
    Filed: August 22, 1975
    Date of Patent: March 8, 1977
    Assignee: Sperry-Sun, Inc.
    Inventor: Billy W. McArthur