Patents by Inventor Viktor BERGSTRÖM

Viktor BERGSTRÖM 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: 20250198085
    Abstract: The present invention relates to a device for dewatering or cleaning a fabric in a paper machine, the device (1) comprising—a contact portion (2) arranged on a first side of the device (1) for contacting a fabric in a paper machine,—an air device (4) for transporting air to or from the fabric, the air device being operatively connected to at least one opening (3) in the first side for supplying or removing air through the at least one opening, and—a vibration generator (5) operatively connected to the contact portion and configured to cause a vibration of the contact portion during operation of the device. The invention also relates to a paper machine (100, 100?) comprising at least one such device.
    Type: Application
    Filed: May 3, 2023
    Publication date: June 19, 2025
    Inventors: Viktor BERGSTRÖM, Christian BOTHÉN, Anders OTTOSSON, Bartlomiej MADURA, Karl-Johan TOLFSSON
  • Patent number: 11268242
    Abstract: The invention relates to a method of transferring a tissue web with residual moisture to a Yankee cylinder and final removal of the dried tissue web from the Yankee cylinder using a doctor blade and collecting the dried web on a reel-up machine forming a tissue reel. The invention also relates to the Yankee adhesive composition per se. The method involves preparation of a water solution of a Yankee adhesive composition with less than 10% final solids content to be applied on the surface of the Yankee cylinder ahead of transferring the tissue web with residual moisture to the Yankee cylinder. The inventive method applies an aqueous PVOH solution with a very high molecular weight polyvinyl alcohol as a part of the solid content of the Yankee adhesive in an amount ranging from 20-65% of the final solids content of the Yankee adhesive. The aqueous PVOH solution with the very high molecular weight polyvinyl alcohol establish a viscosity ranging from 90 cP to 300 cP.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: March 8, 2022
    Assignee: VALMET AKTIEBOLAG
    Inventors: Michael Bjerke, Bruno Tremblay, Viktor Bergström, Petter Ericsson, Danilo Marcos
  • Publication number: 20210310195
    Abstract: The invention relates to a method of transferring a tissue web with residual moisture to a Yankee cylinder and final removal of the dried tissue web from the Yankee cylinder using a doctor blade and collecting the dried web on a reel-up machine forming a tissue reel. The invention also relates to the Yankee adhesive composition per se. The method involves preparation of a water solution of a Yankee adhesive composition with less than 10% final solids content to be applied on the surface of the Yankee cylinder ahead of transferring the tissue web with residual moisture to the Yankee cylinder. The inventive method applies an aqueous PVOH solution with a very high molecular weight polyvinyl alcohol as a part of the solid content of the Yankee adhesive in an amount ranging from 20-65% of the final solids content of the Yankee adhesive. The aqueous PVOH solution with the very high molecular weight polyvinyl alcohol establish a viscosity ranging from 90 cP to 300 cP.
    Type: Application
    Filed: October 19, 2018
    Publication date: October 7, 2021
    Inventors: Michael Bjerke, Bruno TREMBLAY, Viktor BERGSTRÖM, Petter ERICSSON, Danilo MARCOS