Patents by Inventor Zn-Hu Wang

Zn-Hu Wang 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: 5344325
    Abstract: An automatic tracking astronomical globe comprising an annular frame disposed on the upper portion of a mount in a vertical position, an azimuth circle secured across a diameter of the annular frame in a horizontal position, and a transparent celestial globe with a concentric, internal terrestial globe, disposed concentrically within the annular frame and azimuth circle by a polar axle. A synchronous motor disposed in the mount and operating through a globe rotation drive mechanism, rotates the celestial globe at the rate of one revolution per sidereal day. A pair of solar and lunar drive mechanism are disposed in two drive boxes secured to the inner wall of the celestial globe at diametrically opposed positions, and engaged with a stationary equatorial gear formed along the equator of the terrestial globe.
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: September 6, 1994
    Inventor: Zn-Hu Wang