Patents by Inventor John R. Cash

John R. Cash 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).

  • Survey apparatus and method employing rate-of-turn and free gyroscopes
    Patent number: 4297790
    Abstract: Survey apparatus and method employs a free gyroscope for fast determination of azimuth, free gyroscope alignment being periodically corrected by a rate gyroscope which is periodically rotated for accurate azimuth determination. An accelerometer is also usable in conjunction with the gyroscopes for tilt determination. More generally, method and means is provided for calibrating (initially or periodically) an angle or position reference device.
    Type: Grant
    Filed: June 25, 1979
    Date of Patent: November 3, 1981
    Assignee: Applied Technologies Associates
    Inventors: Donald H. Van Steenwyk, John R. Cash, Paul W. Ott
  • Survey apparatus and method employing all latitude, all attitude gyrocompassing
    Patent number: 4197654
    Abstract: Survey apparatus and method employs one or more rate gyroscopes having spin axis components directed along an instrument travel axis and in also in directions normal to the travel axis, so that when the gyroscope or gyroscopes are rotated, the earth's rate of rotation will be detected, at all latitudes and at all instrument attitudes.
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: April 15, 1980
    Assignee: Applied Technologies Associates
    Inventors: Donald H. Van Steenwyk, John R. Cash, Paul W. Ott
  • Survey apparatus and method employing rate-of-turn and free gyroscopes
    Patent number: 4192077
    Abstract: Survey apparatus and method employs a free gyroscope for fast determination of azimuth, free gyroscope alignment being periodically corrected by a rate gyroscope which is periodically rotated for accurate azimuth determination. An accelerometer is also usable in conjunction with the gyroscopes for tilt determination.
    Type: Grant
    Filed: July 17, 1978
    Date of Patent: March 11, 1980
    Assignee: Applied Technologies Associates
    Inventors: Donald H. Van Steenwyk, John R. Cash, Paul W. Ott