Patents by Inventor Stefan Jörnborn

Stefan Jörnborn 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).

  • Machine for punching blanks out of a web of corrugated cardboard and for forming folding lines in said blanks
    Patent number: 6994662
    Abstract: A machine for punching blanks (10) of corrugated cardboard out of a web or plates of corrugated cardboard and for forming folding lines (5) in said blanks. The machine has two cylinders (2, 3) rotating towards each other and of which at least one cylinder is provided on the outer surface with a curved wooden plate (6). The punching tools and the folding line tools (8, 9) are mounted on said wooden plate by being pressed into slits in said wooden plate (6). The cylinders (2, 3) are made of metal, preferably steel. The wooden plate (6) is secured to the cylinder (2, 3) by being screwed (15) thereon. The wooden plate is centered on the cylinder by means of two adjustable rings (4) on the cylinder. Each ring (4) is provided with an axially directed guide projection (4a, 4b) adapted to interact with an end notch (6a, 6b) in the wooden plate.
    Type: Grant
    Filed: February 12, 2003
    Date of Patent: February 7, 2006
    Inventors: Stefan Jörnborn, Tommy Rydberg