Patents by Inventor Lars Håkan Mikael Hannus

Lars Håkan Mikael Hannus 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).

  • Steam box including a suction zone in an area of a web adjacent to edge cutter devices
    Patent number: 6254731
    Abstract: A steam box including a steam chamber for blowing steam toward a paper or board web that runs on support of a wire and a suction zone arranged at the trailing side of the steam chamber of the steam box for providing suction of steam mist discharged by the steam chamber. The suction zone extends to sides of the steam chamber so as to extend to the lateral areas of the web. The steam box includes edge cutter devices arranged in the area of effect of the suction zone extending to the lateral areas of the web, so as to remove the fibers and fillers produced during the edge cutting and prevent soiling of the edges of the steam box.
    Type: Grant
    Filed: December 26, 1997
    Date of Patent: July 3, 2001
    Assignee: Valmet Corporation
    Inventors: Ari Puurtinen, Mika Viertola, Jan Lindström, Lars Håkan Mikael Hannus