Patents by Inventor David G. Cain

David G. Cain 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).

  • Method and means for measuring flow of a two phase fluid
    Patent number: 4320665
    Abstract: A Pitot tube is provided for measuring fluid momentum in a transmission line. A signal is transmitted through the Pitot tube to the fluid, and return energy is detected to determine the gas or liquid phase of the fluid at the point of momentum measurement, thus providing a more accurate measurement of fluid flow. Two Pitot tubes may be employed to determine absolute pressure or momentum and static pressure, from which the dynamic pressure is determined. The transmitted signal may be ultrasonic, electrical, or optical.
    Type: Grant
    Filed: December 17, 1979
    Date of Patent: March 23, 1982
    Assignee: Electric Power Research Institute, Inc.
    Inventor: David G. Cain