Patents by Inventor Pasi Sirviö

Pasi Sirviö 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 system for controlling headbox in a paper/board machine
    Patent number: 6770171
    Abstract: A paper/board machine headbox (10) has a stock inlet header (J), a tube bank (11), a turbulence generator (13) and a slice opening (14) which is provided with a profile bar. The headbox (10) is provided with cross direction measuring sensors (D1, D2; Dmn), by means of which the flow rate profile of the headbox (10) is determined, and the profile bar of the slice opening (14) of the headbox (10) is adjusted in the cross direction on the basis of the thus determined flow rate profile. The headbox (10) is provided with measuring sensors (D1, D2; Dmn) for determining the cross direction flow rate profile of the headbox (10) and with means for adjusting the profile bar on the basis of the flow rate profile.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: August 3, 2004
    Assignee: Metso Paper, Inc.
    Inventors: Jari P. Hämäläinen, Hannu Lepomäki, Juhana Lumiala, Pasi Sirviö