Patents by Inventor Herbert Bertsche

Herbert Bertsche 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).

  • Projection apparatus for planetariums
    Patent number: 5194009
    Abstract: Projection devices (2, . . . ,9) for representing the orbital curves of planets are fitted in several planes beneath the main instrument (1) for fixed star projection. The projection devices (2, . . . , 9) can be moved, respectively independently of each other, around a common vertical axis (14). They include, in addition to the projection units proper, deflecting mirrors which are rotatable relative to the projection units. The spacings of the deflecting mirrors from the common vertical axis of rotation (14) increase in the direction from above to below the apparatus.
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: March 16, 1993
    Assignee: Carl Zeiss-Stiftung
    Inventor: Herbert Bertsche