Patents by Inventor Per-Hakan Persson

Per-Hakan Persson 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).

  • Arrangement relating to mechanically interlocking devices
    Patent number: 6363243
    Abstract: It is shown a locking arrangement at a portable device such as a telephone terminal. The device comprises a main body and a movable protruding member such as a flip-lid. The protruding member is switchable between at least a first position and a second position with respect to the main body. The locking arrangement comprises a plunger unit and a lock and release unit with a fixed part and a resilient part. The resilient part is resilient along at least one direction of resilience (X) away from the fixed part. The plunger unit is switchable, along a direction of insertion and retraction, between a disengaged position and an engaged position between the fixed part and the resilient part.
    Type: Grant
    Filed: April 7, 1999
    Date of Patent: March 26, 2002
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventors: Per-Håkan Persson, Stig Frohlund, Martin Pilcher
  • Card reading device having multiple stacked and offset card receiving positions
    Patent number: 6210233
    Abstract: A card reading device is characterized thereby that it is constructed for reading laterally offset cards lying one above the other. This enables a simple and compact structure to be achieved for the card reading device.
    Type: Grant
    Filed: June 21, 1999
    Date of Patent: April 3, 2001
    Assignee: Tyco Electronics Logistics AG
    Inventors: Albert Hoolhorst, Per-Hakan Persson
  • Method and apparatus for the suppression of electromagnetic interference in an electronic system
    Patent number: 6138347
    Abstract: A conductive strap configured to attach to a circuit board containing a component sensitive to electronmagnetic interference (EMI) and to slidably contact an enclosure having a conductive internal surface can reduce or eliminate EMI in an electronic device. The strap is positioned on the circuit board to shield the sensitive component from EMI. Slidable contact between the shielding strap and the enclosure internal surface renders the strap suitable for almost any enclosure configuration without any design modification.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: October 31, 2000
    Assignee: Ericsson GE Mobile Communications Inc.
    Inventors: Per-Hakan Persson, Nils Rutger Rydbeck
  • Method for the suppression of electromagnetic interference in an electronic system
    Patent number: 5920984
    Abstract: A conductive strap configured to attach to a circuit board containing a component sensitive to electronmagnetic interference (EMI) and to slidably contact an enclosure having a conductive internal surface can reduce or eliminate EMI in an electronic device. The strap is positioned on the circuit board to shield the sensitive component from EMI. Slidable contact between the shielding strap and the enclosure internal surface renders the strap suitable for almost any enclosure configuration without any design modification.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: July 13, 1999
    Assignee: Ericsson GE Mobile Communications Inc.
    Inventors: Per-Hakan Persson, Nils Rutger Rydbeck
  • Apparatus for the suppression of electromagnetic interference in an electronic system
    Patent number: 5672844
    Abstract: A conductive strap configured to attach to a circuit board containing a component sensitive to electronmagnetic interference (EMI) and to slidably contact an enclosure having a conductive internal surface can reduce or eliminate EMI in an electronic device. The strap is positioned on the circuit board to shield the sensitive component from EMI. Slidable contact between the shielding strap and the enclosure internal surface renders the strap suitable for almost any enclosure configuration without any design modification.
    Type: Grant
    Filed: January 2, 1997
    Date of Patent: September 30, 1997
    Assignee: Ericsson Inc.
    Inventors: Per-Hakan Persson, Nils Rutger Rydbeck
  • Hinge mechanism
    Patent number: 5274882
    Abstract: In a hinge mechanism, a first hinge portion and a second hinge portion are urged toward predetermined angular relationships relative to one another. A force, directed outwardly from the first hinge portion, is applied by an axle pivotally connecting the first and second hinge portions and having a V-shaped tip against a V-shaped groove in the second hinge portion, urging the V-shaped tip and groove to engage. In addition to being urged toward predetermined angular relationships, the first and second hinge portions are kept in predetermined angular relationships until a torsional force is applied to one of the hinge portions to overcome forces keeping the V-shaped tip and groove in engagement.
    Type: Grant
    Filed: March 3, 1992
    Date of Patent: January 4, 1994
    Assignee: Ericsson GE Mobile Communications Inc.
    Inventor: Per-Hakan Persson