Patents by Inventor Edmund W. Rusche, legal representative

Edmund W. Rusche, legal representative 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).

  • Apparatus and method for correcting ring laser gyroscope phase angle errors induced by lock-in
    Patent number: 5347359
    Abstract: Phase errors that occur when a dithered ring laser gyroscope enters its deadband are measured, and a correction is applied to the output of the ring laser gyroscope to compensate for these phase errors. The counterpropagating beams in a ring laser gyroscope are heterodyned to produce a pair of quadrature heterodyne signals that indicate the angular output of the laser ring laser gyroscope. The phase angle error between one of the heterodyne signals and either the sum or difference of the separate beam intensities is determined, The phase angle error signal is used to produce a control signal for adjusting the output of the ring laser gyroscope to correct for errors introduced at or near turnarounds in the dither cycle.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: September 13, 1994
    Assignee: Litton Systems, Inc.
    Inventors: Thomas J. Hutchings, Edward Kanegsberg, Sheridan W. Hammons, Daryl C. Stjern, deceased, Edmund W. Rusche, legal representative