Patents by Inventor Brad Wesley Chisum

Brad Wesley Chisum 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).

  • Systems and methods for controlling oscillation of a gyroscope
    Patent number: 9645166
    Abstract: Systems and methods are disclosed herein for determining rotation. A gyroscope includes a drive frame and a base, the drive frame springedly coupled to the base. The gyroscope includes a drive structure configured for causing a drive frame to oscillate along a first axis. The gyroscope includes a sense mass springedly coupled to the drive frame. The gyroscope includes a sense mass sense structure configured for measuring a displacement of the sense mass along a second axis orthogonal to the first axis. The gyroscope includes measurement circuitry configured for determining a velocity of the drive frame, extracting a Coriolis component from the measured displacement, and determining, based on the determined velocity and extracted Coriolis component, a rotation rate of the gyroscope.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: May 9, 2017
    Assignee: Lumedyne Technologies Incorporated
    Inventors: Richard Lee Waters, John David Jacobs, Jeffrey Alan Brayshaw, Brad Wesley Chisum, Mark Steven Fralick, Charles Harold Tally, IV, Xiaojun Huang
  • Systems and Methods for Determining Rotation from Nonlinear Periodic Signals
    Publication number: 20150377622
    Abstract: Systems and methods are disclosed herein for determining rotation. A gyroscope includes a drive frame and a base, the drive frame springedly coupled to the base. The gyroscope includes a drive structure configured for causing a drive frame to oscillate along a first axis. The gyroscope includes a sense mass springedly coupled to the drive frame. The gyroscope includes a sense mass sense structure configured for measuring a displacement of the sense mass along a second axis orthogonal to the first axis. The gyroscope includes measurement circuitry configured for determining a velocity of the drive frame, extracting a Coriolis component from the measured displacement, and determining, based on the determined velocity and extracted Coriolis component, a rotation rate of the gyroscope.
    Type: Application
    Filed: June 26, 2015
    Publication date: December 31, 2015
    Inventors: Richard Lee Waters, John David Jacobs, Jeffrey Alan Brayshaw, Brad Wesley Chisum, Mark Steven Fralick, Charles Harold Tally, IV, Xiaojun Huang