Patents by Inventor David L. Raney

David L. Raney 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).

  • Resonant wingbeat tuning circuit using strain-rate feedback for ornithoptic micro aerial vehicles
    Patent number: 6840476
    Abstract: A resonant wingbeat tuning circuit automatically tunes the frequency of an actuating input to the resonant frequency of a flexible wing structure. Through the use of feedback control, the circuit produces the maximum flapping amplitude of a mechanical ornithoptic system, tracking the resonant frequency of the vibratory flapping apparatus as it varies in response to change in flight condition, ambient pressure, or incurred wing damage.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: January 11, 2005
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: David L. Raney