Patents by Inventor Jounj R. R. Berggvist

Jounj R. R. Berggvist 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 a device for cutting a web in a paper machine by means of a water jet
    Patent number: 4931140
    Abstract: A method and a device for cutting an edge strip in a web by means of a water jet against a felt or wire of a paper machine for the threading of the web, whereby the end of the web is passed through the paper machine by means of the edge strip cut in the web, the edge strip being narrower than the web. In order to prevent the felt or wire from getting wet or being choked, the water jet is displaced back and forth across the direction of travel of the web so that the water jet cuts a gently wavelike edge in the edge strip. Correspondingly, the water used in the cutting and the filling agent or other such waste possibly separated from the web spread over the web over a wider area instead of spreading linearly, whereby the felt or wire will not get wet or choked.
    Type: Grant
    Filed: November 30, 1988
    Date of Patent: June 5, 1990
    Assignee: Oy Tampella AB
    Inventors: Pentti T. Peltola, Jounj R. R. Berggvist