Patents by Inventor Pekka O. Peltola

Pekka O. Peltola 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).

  • Apparatus for defiberizing, screening and pumping cellulose pulp or recycled paper
    Patent number: 4619736
    Abstract: Cellulose pulp or recycled paper is defiberized, screened and pumped. Initial defiberizing, separation of non-disintegrated material, final defiberizing and pumping of the defiberized pulp are performed at a consistency of 6 to 18%, preferably 8 to 12%. Preferably all operations are performed at the same consistency. A defiberizing rotor is disposed in front of an impeller in the inlet of a centrifugal pump. A screen plate is mounted close to the defiberizing rotor. Defiberizing elements are arranged on the other side of the screen plate to move close to the screen surface.
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: October 28, 1986
    Assignee: A. Ahlstrom Osakeyhtio
    Inventors: Kaj O. Henricson, Pekka O. Peltola