Patents by Inventor Donald Niklasson

Donald Niklasson 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 producing helically-wound lock-seam tubing with reduced lubrication
    Patent number: 5606884
    Abstract: In a method and an apparatus for producing helically-wound lock-seem tubing from a metal strip having longitudinal edge portions, the strip is fed to a forming head and formed into helical shape. A lubricant is locally supplied on that side of the strip which forms the outside of the tube, said lubricant being supplied over only a limited portion of the width of the strip.
    Type: Grant
    Filed: June 30, 1995
    Date of Patent: March 4, 1997
    Assignee: Lindab AB
    Inventors: Conny Pettersson, Donald Niklasson