Patents by Inventor Ari Hannimåki

Ari Hannimåki 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).

  • Patent number: 6189583
    Abstract: An apparatus for removing bark from a wood and bark containing log flow. The apparatus includes a number of bark separation units, each of the bark separation units comprising an aggregate of a toothed disc mounted on a first disc shaft and a smooth-surface disc mounted on a second disc shaft. The disc shafts are set crosswise relative to a feeding direction A applied to the log flow by the toothed disc upon the rotation thereof and at a distance from each other. The toothed disc and the substantially smooth-surface disc of a bark separation unit are set in a staggered fashion relative to each other in the axial direction of the disc shafts.
    Type: Grant
    Filed: July 28, 1999
    Date of Patent: February 20, 2001
    Assignee: Andritz-Patentverwaltungs-GmbH
    Inventors: Pekka Kokko, Ari Hannimåki, Jaakko Pitkåkangas