Patents by Inventor Wilhelm Kirchhoff

Wilhelm Kirchhoff 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).

  • Shaping machine for cylindrically bending a plate
    Patent number: 5115658
    Abstract: A shaping machine for bending a plate into a cylindrical shape which comprises a frame and first, second, and third roll assemblies disposed on the frame. Each of the roll assemblies includes a roll for engaging a plate to be bent and a plurality of pairs of support rollers axially distributed along and supporting the roll. There is a drive disposed at the frame for rotatably driving each of the rolls of the first, second, and third roll assemblies, and at least one of the roll assemblies is displaceable transversely to the longitudinal axis of its roll.
    Type: Grant
    Filed: April 10, 1991
    Date of Patent: May 26, 1992
    Assignees: Chr. Haeusler AG, Bergrohr GmbH
    Inventors: Wilhelm Kirchhoff, Simon Schneider, Hans Zeugin