Patents by Inventor Greg W. Draper

Greg W. Draper 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).

  • Roll independent variable inductance inclinometer
    Patent number: 5703484
    Abstract: The pitch sensor of the invention includes a sealed container filled about half full with a magnetic liquid. A pair of coils are wound around the container and produce inductances corresponding to the amount of magnetic liquid disposed within the opening of the coils. As the angle of inclination of the pitch sensor changes, the volume of magnetic liquid becomes greater in one coil, as compared to the other coil, thereby providing a differential inductance. A pulsing circuit pulses the inductances and produces an analog voltage corresponding to the absolute angle of pitch, and a polarity voltage corresponding to the angle quadrant.
    Type: Grant
    Filed: October 4, 1993
    Date of Patent: December 30, 1997
    Assignee: The Charles Machine Works, Inc.
    Inventors: John W. Bieberdorf, John C. Wisehart, Greg W. Draper