Patents by Inventor Richard J. DeFonzo

Richard J. DeFonzo 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).

  • Strap down roll reference
    Patent number: 4676456
    Abstract: Apparatus and method of determining a roll reference for strap down seeker in a spinning projectile is shown to consist of the steps of: (a) determining the frequency spectrum of signals out of an accelerometer disposed in such missile to be sensitive to roll, precession and nutation forces; (b) separating the signals caused to the roll forces; and (c) processing the separated signals to determine the roll reference.
    Type: Grant
    Filed: November 27, 1985
    Date of Patent: June 30, 1987
    Assignee: Raytheon Company
    Inventors: Vincent A. Grosso, Robert J. Fitzgerald, Richard J. DeFonzo