Patents by Inventor Douglas Sitch

Douglas Sitch 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).

  • Accelerometers
    Patent number: 10775404
    Abstract: A method for closed loop operation of a capacitive accelerometer uses a single current source (62) and a single current sink (64) to apply an in-phase drive signal V1? to a first set of fixed capacitive electrode fingers and a corresponding anti-phase drive signal V2? to a second set of fixed capacitive electrode fingers. This provides a net electrostatic restoring force on the proof mass for balancing the inertial force of the applied acceleration and maintains the proof mass at a null position.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: September 15, 2020
    Assignee: ATLANTIC INERTIAL SYSTEMS, LIMITED
    Inventors: Kevin Townsend, Michael Durston, Douglas Sitch
  • ACCELEROMETERS
    Publication number: 20200041537
    Abstract: A method for closed loop operation of a capacitive accelerometer uses a single current source and a single current sink to apply an in-phase drive signal V1? to a first set of fixed capacitive electrode fingers and a corresponding anti-phase drive signal V2? to a second set of fixed capacitive electrode fingers. This provides a net electrostatic restoring force on the proof mass for balancing the inertial force of the applied acceleration and maintains the proof mass at a null position.
    Type: Application
    Filed: October 15, 2019
    Publication date: February 6, 2020
    Inventors: Kevin Townsend, Michael Durston, Douglas Sitch
  • ACCELEROMETERS
    Publication number: 20170153267
    Abstract: A method for closed loop operation of a capacitive accelerometer uses a single current source (62) and a single current sink (64) to apply an in-phase drive signal V1? to a first set of fixed capacitive electrode fingers and a corresponding anti-phase drive signal V2? to a second set of fixed capacitive electrode fingers. This provides a net electrostatic restoring force on the proof mass for balancing the inertial force of the applied acceleration and maintains the proof mass at a null position.
    Type: Application
    Filed: June 26, 2015
    Publication date: June 1, 2017
    Applicant: Atlantic Inertial Systems Limited
    Inventors: Kevin Townsend, Michael Durston, Douglas Sitch