Patents by Inventor Vesa J. Vikman

Vesa J. Vikman 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 for keeping a screen or filter surface clear
    Patent number: 5034120
    Abstract: A method for keeping a screen surface or a filter surface clean, wherein a pressure fluid is introduced from a conduit to a secondary side of a screen/filter drum, which fluid flows, during an underpressurized stage caused by blades of a rotor rotating on a primary side of the screen/filter drum, through the screen/filter drum from the secondary side to the primary side thereby rinsing the openings of the drum and making them clear.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: July 23, 1991
    Assignee: A. Ahlstrom Corporation
    Inventors: Toivo Niskanen, Vesa J. Vikman