Patents by Inventor David T Chelmins

David T Chelmins 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).

  • Sampling and control circuit board for an inertial measurement unit
    Patent number: 9423426
    Abstract: A circuit board that serves as a control and sampling interface to an inertial measurement unit (“IMU”) is provided. The circuit board is also configured to interface with a local oscillator and an external trigger pulse. The circuit board is further configured to receive the external trigger pulse from an external source that time aligns the local oscillator and initiates sampling of the inertial measurement device for data at precise time intervals based on pulses from the local oscillator. The sampled data may be synchronized by the circuit board with other sensors of a navigation system via the trigger pulse.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: August 23, 2016
    Assignee: The United States of America as Represented by the Administrator of National Aeronautics and Space Administration
    Inventors: David T Chelmins, Richard T. Powis, Jr., Obed Sands