Patents by Inventor Werner J. Andresen

Werner J. Andresen 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 and apparatus for manufacturing a helically-wound lock-seam tube having air nozzles
    Patent number: 6453710
    Abstract: In a method of manufacturing a helically-wound lock-seam tube for a ventilation duct system, the tube is provided with a plurality of air nozzles through its wall. The method involves the steps of: feeding a strip of sheet metal from a supply to a punching and pressing unit; punching and pressing the strip in the punching/pressing unit to form two rows of spaced openings through the strip; feeding the punched strip to a roller unit, in which a longitudinal bead is formed in the strip; feeding the punched and beaded strip to a forming head in which the strip is helically-wound to form a tube having a helical lock seam; feeding the helically-wound lock-seam tube out of the forming head; and cutting the tube into desired lengths. The apparatus has components for carrying out the various method steps, and the finished tube is provided with a desired pattern of air nozzles.
    Type: Grant
    Filed: September 5, 2000
    Date of Patent: September 24, 2002
    Assignee: Lindab AB
    Inventors: Werner J. Andresen, Rudolf Binggeli
  • Device for coupling pipe sections
    Patent number: 6073977
    Abstract: A device for coupling two pipe sections comprises a clamping band of U-shaped cross-section with two inwardly directed flanges for encompassing end beads of the pipe sections which are to be coupled. The ends of the clamping band have cylindrical pockets each accommodating a cylindrical element which is rotatable about its own axis in the pocket. The clamping band is clamped by means of a threaded screw which is passed through an unthreaded hole in one cylindrical element and unthreaded holes in the ends of the clamping band, whereupon the screw is in threaded engagement with the other cylindrical element.
    Type: Grant
    Filed: March 5, 1997
    Date of Patent: June 13, 2000
    Assignee: Lindab AB
    Inventors: Hans Schmidt-Hansen, Werner J. Andresen
  • Method and a pipe element for providing a radially outwards directed bead at the end rim of a pipe
    Patent number: 5649662
    Abstract: In this method a short pipe element (2) with a radially outwards directed bead (3) at its end rim (4) is inserted into a pipe, and a radially outwards directed bead (7, 8) is rolled in the other end (5) of the pipe element (2) and in the pipe (1), such that the pipe element is fixed inside the pipe. The pipe element (2) may before insertion into the pipe be provided with at least two radially outwards directed beads (9, 10), causing the pipe element after insertion to be tightly clamped and fixed inside the pipe, and the pipe element (2) may over a part of its outer surface be coated with a sealing material (13).
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: July 22, 1997
    Assignee: Lindab A/S
    Inventors: Peter Krichau, Werner J. Andresen
  • Component for a ventilation duct system
    Patent number: D377829
    Type: Grant
    Filed: May 5, 1995
    Date of Patent: February 4, 1997
    Assignee: Lindab A/S
    Inventor: Werner J. Andresen