Patents by Inventor Lennart Holgersson

Lennart Holgersson 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).

  • Patent number: 4976471
    Abstract: The disclosure relates to an apparatus for granulating excess material in the production of plastic article by means of knives (41) disposed at one end of a feeder screw (20) and cooperating with a number of preferably fixed counter knives (41) and a grid (57), each knife rotating with the screw (20) having a seat (40) which extends between an end plate (26) and a ring (31) most proximal the end of the screw (20) and being fixed therein at the ends, a knife blade (41) adapted to the configuration of the seat (40), and a bar (42) for fixedly clamping the knife blade (41) in the seat (40).
    Type: Grant
    Filed: September 29, 1989
    Date of Patent: December 11, 1990
    Inventor: Lennart Holgersson
  • Patent number: D267776
    Type: Grant
    Filed: October 23, 1980
    Date of Patent: February 1, 1983
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventors: Lennart Holgersson, Berne Mahl