Patents by Inventor David D. Kershner

David D. Kershner 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).

  • Miniature electro-optical air flow sensor
    Patent number: 4485671
    Abstract: A sensor for measuring flow direction and airspeed that is suitable, because of its small size, for rapid instrumentation of research airplanes. A propeller driven sphere rotating at a speed proportional to airspeed presents a reflective target to an electro-optical system such that the duty cycle of the resulting electrical output is proportional to yaw angle and the frequency is proportional to airspeed.
    Type: Grant
    Filed: April 14, 1983
    Date of Patent: December 4, 1984
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: David D. Kershner