Patents by Inventor Wolfgang Weitzel

Wolfgang Weitzel 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: 4960492
    Abstract: The invention relates to a wet end section of a twin wire paper machine. Each wire forms a wire loop. The wires are led together along a vertical, rising, common path, which starts at a wedge shaped feed nip at the bottom of the common path. The nip is formed by the two wires and is defined by a forming cylinder arranged in the loop of the inner wire. Inside the other outer wire, there is a fixed curved surface or outer surface having a center of curvature which lies on one side of the rising common wire path. A further curved inner surface which follows the outer surface along the wire path is provided on a doctor blade carrier or pivotable crossbeam located inside the loop of the inner wire. This is followed by a suction roll arranged in the loop of the outer wire. The length of the further inner surface is shorter than the length of the outer surface.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: October 2, 1990
    Assignee: J.M. Voith GmbH
    Inventors: Wolfgang Weitzel, Dieter Egelhof