Patents by Inventor Gerhard Predl

Gerhard Predl 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).

  • Laser leveling instrument with a leveling base and fine self-leveling of the laser beam
    Patent number: 6313912
    Abstract: A laser levelling instrument with a levelling base (7) and fine self-levelling of the laser beam (10) has an inner cylinder (5) which bears aligning elements and is suspended in an oscillating manner inside an outer cylinder (1). The laser levelling instrument is characterized in that the outer cylinder (1) and the inner cylinder (5) form a capacitor system with opposite electrode faces; the outer cylinder (1) is joined at right angles to the base (7) and is centred with respect to the beam axis (11); and signals for detecting the oscillating position of the inner cylinder (5) may be derived from the capacitor system.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: November 6, 2001
    Assignee: Leica Geosystems AG
    Inventors: Wilfried Piske, Gerhard Predl, Heinz Bernhard, Martin Koeppel