Patents by Inventor David F. Thomas, Jr.

David F. Thomas, Jr. 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).

  • Fluid velocity measuring device
    Patent number: 4122712
    Abstract: A fluid velocity measuring device which when placed in a freestream fluid flow causes vortices to be formed at a frequency proportional to the flow rate of the fluid. Sensors on the device generate electric signals with frequency proportional to the rate of vortex creation and with relative mean amplitudes indicative of fluid flow direction. Electric circuitry translates the electric signals into indications of fluid speed and direction.
    Type: Grant
    Filed: November 30, 1977
    Date of Patent: October 31, 1978
    Assignee: The United States of America as represented by the United States National Aeronautics and Space Administration
    Inventors: David F. Thomas, Jr., Leon A. Williams, Jr.