Patents by Inventor Daniel Cronqvist

Daniel Cronqvist 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).

  • Arrangement in a creasing machine, and products obtained therefrom
    Patent number: 10124554
    Abstract: An arrangement in a cardboard creasing machine, for forming structured patterns of creasing lines in a material comprising a cardboard web fed to the machine, comprising a system of at least two rollers. The first roller is provided with a male die, having at least two envelope surfaces, each with a structured pattern of lines, of which at least one has an open end. In order to prevent wild creasing lines with open ends are provided with crease stoppers, extending perpendicularly to the open line. The second roller is provided with a female die corresponding to the male die.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: November 13, 2018
    Assignee: TETRA LAVAL HOLDINGS & FINANCE S.A.
    Inventors: Ola Persson, Daniel Cronqvist
  • ARRANGEMENT IN A CREASING MACHINE, AND PRODUCTS OBTAINED THEREFROM
    Publication number: 20150080200
    Abstract: An arrangement in a cardboard creasing machine, for forming structured patterns of creasing lines in a material comprising a cardboard web fed to the machine, comprising a system of at least two rollers. The first roller is provided with a male die, having at least two envelope surfaces, each with a structured pattern of lines, of which at least one has an open end. In order to prevent wild creasing lines with open ends are provided with crease stoppers, extending perpendicularly to the open line. The second roller is provided with a female die corresponding to the male die.
    Type: Application
    Filed: April 19, 2013
    Publication date: March 19, 2015
    Applicant: TETRA LAVAL HOLDINGS & FINANCE S.A.
    Inventors: Ola Persson, Daniel Cronqvist