Patents by Inventor Esa Ottelin

Esa Ottelin 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).

  • Method and apparatus for controlling distortion of fibre orientation in a paper web
    Patent number: 4687548
    Abstract: Method and apparatus in the head box of a paper machine for controlling the distortion of fibre orientation in the paper web comprise an arrangement wherein by-pass flows of pulp suspension are passed through opposite passages lateral of the turbulence generator preceding the slice portion or discharge channel of the head box. The magnitude and/or the mutual relationship of the by-pass flows is adjusted to control the distortion of the fibre orientation in that the by-pass flows produce a transverse flow in the discharge flow of the pulp suspension from the head box, the speed of which compensates for the distortion of the fibre orientation.
    Type: Grant
    Filed: October 28, 1985
    Date of Patent: August 18, 1987
    Assignee: Valmet Oy
    Inventors: Erkki Ilmoniemi, Jouni Koskimies, Markku Lyytinen, Kari Pitkajarvi, Esa Ottelin