Patents by Inventor Jan Roger Wennerberg

Jan Roger Wennerberg 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: 6201705
    Abstract: The invention relates to a magazine (1) adapted for enclosing a plurality of circuit boards (2) in side-by-side relationship, and comprises a plurality of guide strips (3a, 3b) on mutually opposing inner wall parts, wherein mutually opposing and mutually corresponding guide strips are adapted for coaction with mutually opposing circuit board edge parts (2c, 2e) for the guiding of a circuit board (2). The magazine includes heat-emitting means in the form of a plurality of vertical cooling channels (4a, 4b, 4c) delimited by wall parts, wherein two of these wall parts are placed close together with their respective outer surfaces (21a″, 22a) facing towards a respectively closely adjacent circuit board position.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: March 13, 2001
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Lars Göran Nygren, Uno Dahl, Jan Roger Wennerberg, Lars Yngve Bertilsson
  • Patent number: 5889650
    Abstract: A rack arrangement including a rack designed to be able to support several magazines that are positioned above one another, where each magazine encloses several printed boards or printed board assemblies that are situated side by side. The frontal surface of the rack arrangement coincides with the front plane of each magazine. Cassettes designed to control or guide a flow of air for cooling the printed boards is arranged between adjacent magazines at a vertical distance from one another. The magazine and/or the cassette is arranged so that, from a fully-inserted position in the rack, the magazine and/or cassette may be displaced along guides to project beyond the rack, or vice versa. A magazine and adjacent cassette may be joined together by a hinge along a horizontal edge of the front plane. When displaced, the magazine may be dropped or tilted forwardly by the hinge, thereby making the back plane accessible.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: March 30, 1999
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Lars Yngve Bertilsson, Lars Goran Nygren, Jan Roger Wennerberg