Patents by Inventor Markku Luukkonen

Markku Luukkonen 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 OF MANUFACTURING A SCREEN CYLINDER AND A SCREEN CYLINDER
    Publication number: 20130233790
    Abstract: The present invention relates to a method of manufacturing a screen cylinder, and a screen cylinder that is particularly suitable for screening, filtering, fractionating, or sorting cellulose pulp suspensions of the pulp and paper making industry, or other similar suspensions. The present invention discusses in particular the manufacture of end rings (48) of a screen cylinder, i.e. rings via which the screen cylinder (10) is connected to the surrounding screen cylinder housing. The end rings (48) of the screen cylinder (10) are formed of a combination of inner non-composite polymeric material (482) acting as glue and an outer massive metal ring (484) utilized as a mold during the manufacturing stage.
    Type: Application
    Filed: November 22, 2011
    Publication date: September 12, 2013
    Applicant: AIKAWA FIBER TECHNOLOGIES TRUST
    Inventors: Aku Asikainen, Markku Luukkonen