Patents by Inventor Per Ferm

Per Ferm 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: 10617007
    Abstract: Embodiments herein relate to a Printed Circuit Board, PCB, (1) and a terminal (2) for connecting the PCB (1) to an electrical component. The PCB (1) comprises a through-hole (11) for receiving the terminal (2). The through-hole (11) has a partially open side wall (12), wherein the side wall (12) is open along at least a part of a length (L) of the 5 through-hole (11) perpendicular to a radius (R) of the through-hole (11). This allows the terminal (2) to protrude through the open side wall (12) when received by the through-hole (11), such that a position of the terminal (2) is adjustable along the length of the open side wall (12). The terminal (2) comprises a base (21), adapted to be received by the through-hole (11) of the PCB (1) and to create a press fit with the side wall (12) of the through-hole 10 (11), and a pin (22) projecting from a surface (23) of the base (21).
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: April 7, 2020
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Igor Perez-Uria, Lars Drugge, Per Ferm, Enock Huang
  • Patent number: 10340788
    Abstract: The invention is directed towards a power source interface module for electronic circuits supplied by power from a power source as well as a power supply arrangement for electronic circuits comprising such a power source interface module. The module comprises a first circuit board carrying components, the first circuit board comprising a number of stacked circuit board layers as well as at least two openings, at least a part of a filter comprising at least one pair of magnetically coupled inductive coils, a core with two core legs, each core leg stretching through a corresponding opening in the circuit board, wherein each coil is wound around a corresponding core leg, the turns of the coils stretch through the circuit board layers, and each layer between an upper outer layer and a lower outer layer comprises at least a part of one turn.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: July 2, 2019
    Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
    Inventors: Mattias Andersson, Martin Etsare, Per Ferm, Roger Hoffström, Igor Perez-Uria
  • Publication number: 20190090349
    Abstract: Embodiments herein relate to a Printed Circuit Board, PCB, (1) and a terminal (2) for connecting the PCB (1) to an electrical component. The PCB (1) comprises a through-hole (11) for receiving the terminal (2). The through-hole (11) has a partially open side wall (12), wherein the side wall (12) is open along at least a part of a length (L) of the 5 through-hole (11) perpendicular to a radius (R) of the through-hole (11). This allows the terminal (2) to protrude through the open side wall (12) when received by the through-hole (11), such that a position of the terminal (2) is adjustable along the length of the open side wall (12). The terminal (2) comprises a base (21), adapted to be received by the through-hole (11) of the PCB (1) and to create a press fit with the side wall (12) of the through-hole 10 (11), and a pin (22) projecting from a surface (23) of the base (21).
    Type: Application
    Filed: March 17, 2016
    Publication date: March 21, 2019
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Igor PEREZ-URIA, Lars DRUGGE, Per FERM, Enock HUANG
  • Publication number: 20170294835
    Abstract: The invention is directed towards a power source interface module for electronic circuits supplied by power from a power source as well as a power supply arrangement for electronic circuits comprising such a power source interface module. The module comprises a first circuit board carrying components, the first circuit board comprising a number of stacked circuit board layers as well as at least two openings, at least a part of a filter comprising at least one pair of magnetically coupled inductive coils, a core with two core legs, each core leg stretching through a corresponding opening in the circuit board, wherein each coil is wound around a corresponding core leg, the turns of the coils stretch through the circuit board layers, and each layer between an upper outer layer and a lower outer layer comprises at least a part of one turn.
    Type: Application
    Filed: December 18, 2014
    Publication date: October 12, 2017
    Applicant: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Mattias ANDERSSON, Martin ETSARE, Per FERM, Roger HOFFSTRÖM, Igor PEREZ-URIA
  • Patent number: 9107296
    Abstract: The present invention relates to a thermo/electrical conductor arrangement for multilayer printed circuit boards (PCBs). Using vias for the transport of heat from the interior of the PCB and for conducting high currents between the conducting layers have limitations. Via platings are very thin and vias filled with solder is an unreliable method as there is always a risk that the vias are not properly filled during the soldering process. The present invention overcomes this by inserting a pin of a current conductive material (such as copper) into the via so that the pin is brought into galvanic contact with the conducting layers in the PCB and where at least one end of the pin is freely protruding from the PCB thereby allowing the pin to conduct heat from the interior of the PCB to the protruding end of the pin for external cooling.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: August 11, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Igor Perez-Uria, Per Ferm
  • Publication number: 20150208506
    Abstract: The present invention relates to a printed circuit board arrangement and a method for forming an electrical connection at a printed circuit board. The printed circuit board arrangement comprises a printed circuit board having an electrical connection electrically connecting a first conductive layer on a first side of the printed circuit board and a second conductive layer on a second side of the printed circuit board. The electrical connection comprises a passage extending from an opening in one of the sides of the printed circuit board through the printed circuit board between the first and second layers. Electrically conducting material is formed on the walls of the passage and forms a first path electrically connecting the first conductive layer with the second conductive layer.
    Type: Application
    Filed: August 10, 2012
    Publication date: July 23, 2015
    Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Igor Perez-Uria, Per Ferm, Benny Gustafson
  • Publication number: 20140085034
    Abstract: The present invention relates to a thermo/electrical conductor arrangement for multilayer printed circuit boards (PCBs). Using vias for the transport of heat from the interior of the PCB and for conducting high currents between the conducting layers have limitations. Via platings are very thin and vias filled with solder is an unreliable method as there is always a risk that the vias are not properly filled during the soldering process. The present invention overcomes this by inserting a pin of a current conductive material (such as copper) into the via so that the pin is brought into galvanic contact with the conducting layers in the PCB and where at least one end of the pin is freely protruding from the PCB thereby allowing the pin to conduct heat from the interior of the PCB to the protruding end of the pin for external cooling.
    Type: Application
    Filed: June 1, 2011
    Publication date: March 27, 2014
    Inventors: Igor Perez-Uria, Per Ferm
  • Patent number: 6114932
    Abstract: An inductive component including a primary coil having first and second terminals, and a secondary coil including a coil substrate, wiring patterns, and conductive terminals. The coil substrate is provided with alignment recesses for receiving and locating the first and second terminals of the primary coil in a fixed relationship to each other and to the conductive terminals of the secondary coil and an inductive component assembly having the inductive component is mounted outside a periphery of a substrate. A magnetic core of the inductive component has a central portion which is displaced off an edge of the magnetic core and has bevelled edges at a base of the central portion of the magnetic core. Terminals of both the primary coil and the secondary coil are located close together on the same side of the inductive component to reduce thermal stress.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: September 5, 2000
    Assignee: Telefonaktiebolaget LM Ericsson
    Inventors: Henrik Wester, Per Ferm, Jan Ohrn