Patents by Inventor Tommy K. Hubbell

Tommy K. Hubbell 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).

  • Gravity meter digitizer
    Patent number: 4718274
    Abstract: A digitizer for a gravity meter having a rotatable gradient readout dial and a null indicator, the digitizer comprising a shaft position sensor attached to the readout dial for providing a digital output signal representation of clockwise and counterclockwise rotation of the readout dial during nulling of said indicator, a microprocessor coupled to the shaft position sensor for receiving and storing the sensor digital output signal representation and means in the microprocessor for analyzing the stored digital output signals from the shaft position sensor and producing and storing a digitized output signal representing the gravity in the form of the average position of the readout dial on the gravity meter.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: January 12, 1988
    Inventors: David B. Bell, Tommy K. Hubbell