Patents by Inventor Richard D. Elliott, III

Richard D. Elliott, III 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).

  • METHOD AND SYSTEM FOR CONTROL AND READOUT OF TUNING FORK GYROSCOPE
    Publication number: 20230119809
    Abstract: A tuning fork sensor system places a controlled bias on the proof-mass drive-axis electrodes to cancel the quadrature charge. Also, its charge amplifiers employ a field-effect transistor biased slightly into the triode region so that it behaves as a very large value resistor. In addition, it uses a phase-locked loop having a special loop filter in order to optimize performance by rejecting off-frequency drive feedthrough to the motor pick-off while resulting in very low phase wander for the demodulation references.
    Type: Application
    Filed: December 16, 2022
    Publication date: April 20, 2023
    Inventors: Paul A. Ward, Richard D. Elliott, III, Daniel Joseph Guyon
  • Method and system for control and readout of tuning fork gyroscope
    Patent number: 11561094
    Abstract: A tuning fork sensor system places a controlled bias on the proof-mass drive-axis electrodes to cancel the quadrature charge. Also, its charge amplifiers employ a field-effect transistor biased slightly into the triode region so that it behaves as a very large value resistor. In addition, it uses a phase-locked loop having a special loop filter in order to optimize performance by rejecting off-frequency drive feedthrough to the motor pick-off while resulting in very low phase wander for the demodulation references.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: January 24, 2023
    Assignee: THE CHARLES STARK DRAPER LABORATORY, INC.
    Inventors: Paul A. Ward, Richard D. Elliott, III, Daniel Joseph Guyon
  • METHOD AND SYSTEM FOR CONTROL AND READOUT OF TUNING FORK GYROSCOPE
    Publication number: 20200116487
    Abstract: A tuning fork sensor system places a controlled bias on the proof-mass drive-axis electrodes to cancel the quadrature charge. Also, its charge amplifiers employ a field-effect transistor biased slightly into the triode region so that it behaves as a very large value resistor. In addition, it uses a phase-locked loop having a special loop filter in order to optimize performance by rejecting off-frequency drive feedthrough to the motor pick-off while resulting in very low phase wander for the demodulation references.
    Type: Application
    Filed: October 16, 2019
    Publication date: April 16, 2020
    Inventors: Paul A. Ward, Richard D. Elliott, III, Daniel Joseph Guyon