Patents by Inventor Krister Aspegren

Krister Aspegren 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).

  • Publication number: 20090314447
    Abstract: A papermaking machine is provided for manufacturing a paper web, comprising a forming section having two clothings, a dewatering section comprising at least one paper manufacturing clothing, and a plurality of rotary rolls comprising guide rolls, each guide roll having two opposing flanges interconnected by a shell, each clothing running about some of the rotary rolls in a loop, wherein said papermaking machine is a tissue papermaking machine, at least one of the guide rolls is a lightweight guide roll supporting at least one of the clothings, and at least one of the shell and the flanges of said lightweight guide roll comprises a material with a density less than steel, wherein a weight of the lightweight guide roll is at least 10% less than a weight of a steel guide roll having the same dimensions and mechanical parameters. Associated devices and methods are also provided.
    Type: Application
    Filed: November 16, 2006
    Publication date: December 24, 2009
    Inventors: Krister Aspegren, Rune Skogsberg, Rolf Jonsson