Patents by Inventor Ulrich Zillmann

Ulrich Zillmann 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: 4208898
    Abstract: A process and device for carrying out the process allows for the extrustion of composite sections comprising a beam-like section made of a light metal and at least one insert made of another metal which provides a facing on at least one surface of the beam-like section. The beam-like section, which may be a conductor rail, is produced by extruding through a shape-giving die whereby at least two composite sections are produced simultaneously and the facing strips are positioned pairwise between opposite lying parts of the beam-like sections. The present invention allows the facing strips to be introduced into the extrusion device without the extreme bending previously experienced. Brittle materials which could not withstand the extreme bending experienced heretofore can now be used for facing material.
    Type: Grant
    Filed: June 13, 1979
    Date of Patent: June 24, 1980
    Assignee: Swiss Aluminium Ltd.
    Inventors: Adolf Ames, Alfred Wagner, Ulrich Zillmann