Patents by Inventor Alfred Bubnik

Alfred Bubnik 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: 5225043
    Abstract: A twin screen paper forming apparatus is provided having upper and lower screens moving in a first direction and wrapping around a portion of a leading forming roller positioned at the beginning of a forming zone where the upper and lower screens converge to form a twin screen. At least one stationary forming element is positioned downstream of the leading forming roller to contact with the lower screen. A water guide element is also located in the region of the forming zone approximately at the start of the forming zone. At least one forming rail contacts the upper screen and a pulp suspension discharge nozzle is positioned, to prevent preliminary draining, upstream of the location where the upper and lower screens converge.
    Type: Grant
    Filed: December 4, 1991
    Date of Patent: July 6, 1993
    Assignee: Sulzer-Escher Wyss GmbH
    Inventors: Heinz Braun, Alfred Bubnik, Herbert Holik, Rudiger Kurtz, Heinz Steckenreuter, Helmut Stieb, Jurgen Zenz