Patents by Inventor Earl R. Yingling

Earl R. Yingling 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).

  • Patent number: 6285338
    Abstract: The present invention provides two approaches for eliminating a keyhole problem associated with an azimuth-elevation gimbal antenna which is a problem that occurs when the antennae is tracking a satellite vehicle that is substantially directly overhead, i.e., the satellite vehicle is near the zenith position. At such a point, the azimuth motor of the gimbal antenna must turn very rapidly when the satellite passes through such near zenith position. A first approach involves tilting up one of the elevation axis joints when the antenna points at or near its zenith position such that the pointing angle may be altered by a predetermined angle, for example around 0.5° to 1°, from the zenith position. A second approach involves tilting the secondary reflector of the cassegrain antenna such that the pointing direction of the antenna may be altered by a predetermined angle.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: September 4, 2001
    Assignee: Motorola, Inc.
    Inventors: Monty W. Bai, Keith A. Kingston, Hugh R. Malone, John G. Doggett, Jr., Ronald P. Vidano, Earl R. Yingling