Patents by Inventor Rolf Thulin

Rolf Thulin 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 an apparatus for the parallel displacement of a material web
    Patent number: 5707024
    Abstract: A method and an apparatus for the parallel displacement of a material web (1) are disclosed, in that the material web (1) is, between two driven bending rollers (6,8), caused to form a freely depending bight or loop (11) whose lower end is read-off by a sensing device (12). The sensing device (12) controls the speed of the first bending roller (6), while the second bending roller (8) is driven at constant speed.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: January 13, 1998
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventors: Henrik Mellquist, Rolf Thulin, Hans Nantin