Patents by Inventor Bo U. E. Henningsson

Bo U. E. Henningsson 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: 5545843
    Abstract: A contact spring for securing a component having a flange-like edge to a substrate, for instance for securing a cooling screen or shield to a circuit board, includes an elongated profiled part that is generally U-shaped in cross section for surface-mounting on the substrate. A first leg of the U-shaped profiled part is substantially straight and extends continuously along the contact spring. The second leg of the U-shaped profiled part has tongues whose upper extremities are bent inwardly towards the bottom of the profiled part. Alternate tongues on the second leg are angled to form a fork-like contact with the first leg. The other tongues on the second leg are semicircular and extend approximately half way above the bottom of the profiled part.
    Type: Grant
    Filed: April 5, 1995
    Date of Patent: August 13, 1996
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Stig A. Arvidsson, Bo U. E. Henningsson
  • Patent number: 5541811
    Abstract: An arrangement for shielding and/or cooling electronic components mounted on a circuit board includes a generally planar shielding hood and cooling elements. The shielding hood has downward extending side edges that extend around the perimeter and are intended to surround the component. Each cooling element has a generally planar underside and cooling fins disposed on the upper side. The arrangement also includes hook fasteners mounted on the surface of the circuit board and holders mounted on the cooling elements that coact with the hook fasteners. The hook fasteners press the cooling elements resiliently against the shielding hood and against the component. The holders can be brought into resilient, spring engagement with the hook fasteners. The shielding hood is adapted to the component, and when the component is to be shielded, the shielding hood is placed over the component.
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: July 30, 1996
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Bo U. E. Henningsson, Stig A. Arvidsson
  • Patent number: 5520554
    Abstract: A device for electromagnetically shielding a cable or the like that is connected to a board connector on a circuit board inserted into a magazine using a corresponding cable connector. The circuit board includes a board front having an opening through which the cable connector is connected to the board connector. The device includes a shielding sleeve that is mounted on the circuit board over the board connector and extends through the opening in the board front. A shielding spring is mounted on the shielding sleeve between the sleeve and the opening in the board front. The sleeve is open towards the circuit board and the board front opening and is provided with recesses. The shielding spring includes a frame that extends around the sleeve and includes a plurality of outwardly directed, resilient tongues that lie against the board front. A plurality of resilient tabs lie along the shielding sleeve, the outermost parts of which include inwardly directed tongues.
    Type: Grant
    Filed: April 5, 1995
    Date of Patent: May 28, 1996
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Bo U. E. Henningsson, Lars Lindqvist