With Closed Core Interrupted By An Air Gap Patents (Class 336/178)
  • Patent number: 10923276
    Abstract: A coil electronic component includes a body having a coil portion embedded therein and having a form in which magnetic particles are dispersed in a first insulating material, a first atomic layer deposition (ALD) layer formed along a surface of the coil portion using a second insulating material, a second ALD layer formed along a surface of the first ALD layer using a third insulating material, and external electrodes connected to the coil portion.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: February 16, 2021
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Young Il Lee, Han Wool Ryu, Sang Kyun Kwon
  • Patent number: 10914763
    Abstract: A current transducer including a housing comprising an outer casing, a magnetic circuit core configured to encircle at least one primary conductor, and a magnetic field detector positioned in a magnetic circuit gap of the magnetic circuit core. The housing further includes an inner support part comprising a main body portion and a magnetic core support portion. The magnetic circuit core is in the form of a thin strip of amorphous material supported on the main body portion and magnetic core support portion, the magnetic circuit gap being formed between overlapping ends of the strip.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: February 9, 2021
    Assignee: LEM International SA
    Inventors: Steve Mouchet, FĂ©lix Buhlmann, Stephan Trombert, Steve Moureaux
  • Patent number: 10832851
    Abstract: A reactor is provided that can reduce or alleviate stress that can be applied to a magnetic core, and also has excellent manufacturability, and a reactor manufacturing method is also provided. The reactor includes a coil and a magnetic core that includes a plurality of core pieces and a gap member that is interposed between at least one set of core pieces, the magnetic core forming a closed magnetic circuit when the coil becomes excited. At least one gap member is a resin foam gap member that includes, in a contact region that comes into contact with the core pieces, a resin foam portion constituted by resin foam.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: November 10, 2020
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventor: Kazuhiro Inaba
  • Patent number: 10741323
    Abstract: A coil component includes: a pillar part; first and second rectangular planar parts, each having long sides L, short sides S, and thickness T; a coil formed around the pillar part; two terminal electrodes electrically connected to both ends of the coil; and an outer sheath containing magnetic grains and resin material and covering the coil at least partially; wherein the thickness PL in the L direction and thickness PS in the S direction, of the outer sheath, in a section cut across the center of the pillar part and in parallel with the LS planes, satisfy the relationship of PL<PS.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: August 11, 2020
    Assignee: TAIYO YUDEN CO., LTD
    Inventors: Hidenori Aoki, Masashi Kuwahara, Hideki Ogawa
  • Patent number: 10726990
    Abstract: A transformer includes a substrate having an input and an output, the input being connectable to one section of a medical electrical device, the output being connectable to another section of the medical electrical device. An input ground system and an output ground system, which is electrically isolated from the input ground system, provide continuous return paths for an input signal and an output signal, respectively. The transformer includes a primary winding electrically connected to the input, a secondary winding electrically connected to the output, and a core transferring data from the primary winding to the secondary winding using magnetic field coupling. A middle portion of the primary winding and a middle portion of the secondary winding wrap around the core and are twisted together. Other portions of the primary winding are twisted with one another, while other portions of the secondary winding are twisted with one another.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: July 28, 2020
    Assignee: Karl Storz Imaging, Inc.
    Inventor: Joseph Sanandajifar
  • Patent number: 10672553
    Abstract: According to one embodiment a transformer that includes a core having a central arm and first and second outer arms on opposite sides of the of the central arm, a primary winding surrounding the central arm and a secondary winding surrounding the central arm is disclosed. The transformer further includes a primary winding casing surrounding the primary winding, a secondary winding casing surrounding the secondary winding, and at least two spacers including a first spacer and a second spacer. The first spacer is configured and arranged to space the primary winding casing away from a bottom of the core and the outer arms and the second spacer is configured and arranged to space the secondary winding casing away from the primary winding casing and the outer arms.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: June 2, 2020
    Assignee: RAYTHEON COMPANY
    Inventor: Lev Volfson
  • Patent number: 10650960
    Abstract: A reactor includes a core body having at least three iron cores composed of a plurality of stacked magnetic plates and an end plate and a pedestal which are connected to the core body so as to interpose the core body therebetween. Gaps are formed between the at least three iron cores, through which magnetic connection can be established. An unevenness absorbing member is arranged at least one of a region between an end plate and the core body and a region between the core body and a pedestal, for absorbing unevenness in heights of the at least three iron cores in the axial direction of the core body.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: May 12, 2020
    Assignee: FANUC CORPORATION
    Inventors: Tomokazu Yoshida, Masatomo Shirouzu, Kenichi Tsukada
  • Patent number: 10626841
    Abstract: A step-up converter and an ignition system including a step-up converter are provided, which enable a better automated manufacture and reduced electrical insulation measures by a step-up converter constructed as follows: a transformer including a primary coil and a secondary coil galvanically isolated from the primary coil, the secondary coil being wound in multiple layers, and the primary coil being wound coaxially to the secondary coil over an outermost layer of the secondary coil, a first electrical terminal of the secondary coil branching off from an innermost layer of the secondary coil. The first electrical terminal of the secondary coil is configured for electrical connection to a high-voltage terminal for the spark gap.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: April 21, 2020
    Assignee: Robert Bosch GmbH
    Inventor: Werner Steinberger
  • Patent number: 10498245
    Abstract: The invention relates to an integrated magnetic component for a switched mode power converter, which includes a transformer with two transformer core elements (E2, E3) and at least one choke core element (E1, E4). Each core element (E1, E2, E3, E4) comprises two outer legs (120a, 120b) and a flange (122) which connects the outer legs (120a, 120b) to form U-like core elements. Each choke core element (E1, E4) abuts a flange (122) of one of the transformer core elements (E2, E3). The integrated magnetic component (103) includes a first choke winding (123) arranged on a leg (121.1) of a choke core element (E1) and a second choke winding (124) arranged on another leg (121.4) of a choke core element (E4), where one of a primary (P1, P2) or a secondary winding (S1, S2) of the transformer is connected between the choke windings (123, 124) and where all windings (P1, P2, S1, S2, 123, 124) are interconnected to reduce core losses by flux compensation in order to increase power density.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: December 3, 2019
    Assignee: DELTA ELECTRONICS (THAILAND) PUBLIC CO., LTD.
    Inventors: Hugues Douglas Njiende T., Sergey Tikhonov
  • Patent number: 10483029
    Abstract: A core member capable of favorably meeting required characteristics is provided. A core member according to the present invention is obtained by molding a mixture containing soft magnetic powder and a resin. This core member includes a specific portion including, as a specific surface, at least one of an installation surface facing an object on which the core member is to be installed and an interlinkage surface that is intersected by a magnetic flux excited by a coil, and an opposite surface on a side opposite to the specific surface. The specific portion has a higher density than a region of the opposite surface.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: November 19, 2019
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventor: Kazuhiro Inaba
  • Patent number: 10410790
    Abstract: A primary coil which includes a primary winding which is wound around a primary bobbin, and a secondary coil which includes a secondary winding which is separately wound around a secondary bobbin which includes a plurality of sections, are provided, and a winding portion of the secondary coil is configured in a state where a maximum winding height is set as 20% through 30% with respect to an axis length winding length.
    Type: Grant
    Filed: May 13, 2015
    Date of Patent: September 10, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shota Yanagi, Takashi Idogawa
  • Patent number: 10403428
    Abstract: In an embodiment, a DC-DC power conversion circuit with a step-down conversion ratio of at least 12:1 is provided. The DC-DC power conversion circuit includes a half-bridge circuit arrangement, a resonant capacitor and a module including a hybrid transformer. The hybrid transformer includes a magnetic core and a primary winding electrically coupled in series with a secondary winding. The module further includes a synchronous rectifier having an output coupled between the primary winding and the secondary winding of the hybrid transformer, and an output capacitor coupled with an output of the secondary winding.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: September 3, 2019
    Assignee: Infineon Technologies Austria AG
    Inventors: Christian Rainer, Matteo-Alessandro Kutschak, Otto Wiedenbauer
  • Patent number: 10395811
    Abstract: An inductive sensor includes a core body, a coil wound on the core body, a cavity having a fixed volume within the core body, and an epoxy mixture filling a controlled portion of the fixed volume. The controlled portion of the fixed volume filled with the epoxy mixture controls an inductance of the sensor.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: August 27, 2019
    Assignee: Simmonds Precision Products, Inc.
    Inventor: Sean Postlewaite
  • Patent number: 10381916
    Abstract: A differential and common mode filter for an inverter, comprising an inductor having a core. The core comprises: an upper yoke and a lower yoke which comprise a first magnetic material; a first leg, a second leg and a third leg which extend between the upper and lower yokes and around which a first coil, a second coil, and a third coil are arranged, respectively, wherein at least one portion of the first, second and third legs, when seen in a transverse cross section, is made of one second magnetic material, and wherein the first magnetic material has a magnetic permeability higher than the second magnetic material; at least one unwound leg extending between the upper and lower yokes.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: August 13, 2019
    Assignee: ABB Schweiz AG
    Inventor: Fabio Tombelli
  • Patent number: 10304624
    Abstract: A method for manufacturing an electronic component for avoiding electromagnetic interference includes: (a) placing a T-shaped core and an air-core coil in a metal mold; (b) injecting a mixture of a composite magnetic material and a resin into the metal mold so that the T-shaped core and the air-core coil are embedded by the mixture; (c) heating the mixture at a first temperature; (d) adjusting an outer shape while removing excessive mixture; and (e) hardening the mixture. The method may further include a process of polishing an outside of the hardened mixture. The method may further include a process of applying a pressure of 0.1 to 20.0 kg/cm2 to the mixture for adjusting an outer shape of the mixture by a movable punch of a press machine before the hardening process.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: May 28, 2019
    Assignee: SUMIDA CORPORATION
    Inventors: Shinichi Sakamoto, Douglas James Malcolm
  • Patent number: 10276296
    Abstract: A coil component includes: a pillar part; first and second rectangular planar parts, each having long sides L, short sides S, and thickness T; a coil formed around the pillar part; two terminal electrodes electrically connected to both ends of the coil; and an outer sheath containing magnetic grains and resin material and covering the coil at least partially; wherein the thickness PL in the L direction and thickness PS in the S direction, of the outer sheath, in a section cut across the center of the pillar part and in parallel with the LS planes, satisfy the relationship of PL<PS.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: April 30, 2019
    Assignee: TAIYO YUDEN CO., LTD
    Inventors: Hidenori Aoki, Masashi Kuwahara, Hideki Ogawa
  • Patent number: 10224141
    Abstract: A coupled inductor comprises an annular core 1 and coils 2a, 2b wound around the core. The annular core 1 includes a sendust core having a maximum differential permeability that is equal to or greater than 30.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: March 5, 2019
    Assignee: TAMURA CORPORATION
    Inventors: Naoki Inoue, Toshikazu Ninomiya
  • Patent number: 10181795
    Abstract: Controller and method for a power converter. For example, the controller includes a first controller terminal coupled to a gate terminal of a transistor. The transistor further includes a drain terminal and a source terminal, and the first controller terminal is at a first voltage as a first function of time. Additionally, the controller includes a second controller terminal coupled to the source terminal. The second controller terminal is at a second voltage as a second function of time. Moreover, the controller includes a third controller terminal coupled to a first resistor terminal of a resistor. The resistor further includes a second resistor terminal, and the third controller terminal is at a third voltage as a third function of time. Also, the controller includes a fourth controller terminal coupled to a first capacitor terminal of a capacitor.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: January 15, 2019
    Assignee: On-Bright Electronics (Shanghai) Co., Ltd.
    Inventors: Liqiang Zhu, Lieyi Fang
  • Patent number: 10163555
    Abstract: A coil unit includes a ferrite including a coil base in a form of a frame, on which a coil is arranged, and formed from a plurality of divided ferrites. The plurality of divided ferrites include a first divided ferrite and a second divided ferrite which form a corner piece and a third divided ferrite and a fourth divided ferrite which form a side piece.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: December 25, 2018
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroaki Yuasa, Shuhei Ejima
  • Patent number: 10163561
    Abstract: A distributed planar inductor is provided with energy storage components featuring high energy storage density, multilayer winding and low copper losses. The inductor includes a magnetic core with a plurality of vertically oriented posts, a plurality of horizontally oriented plates coupled to define an interior, and a conductive winding extending through the interior. The vertical posts each include a plurality of energy storage elements coplanar in orientation with respect to the winding and having a substantially two dimensional structure. The conductive winding may comprise co-planar winding tracks extending through the interior, for example vertically coupled in parallel. A set of co-planar winding tracks may correspond to respective layers in a multilayer printed circuit board, and for example may comprise printed circuit board tracks vertically interconnected by vias extending there-through.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: December 25, 2018
    Assignee: Bel Power Solutions Inc.
    Inventor: Ivan Feno
  • Patent number: 10141104
    Abstract: A contactless connector is provided and includes an inductive coupling element, a first contact lead, a second contact lead, a base plate, and an outer ferrite element. The inductive coupling element includes a plurality of windings, and the first contact lead and the second contact lead are connected to the plurality of windings and carry electric currents in opposing directions. The base plate includes a lead receiving passageway receiving both the first contact lead and the second contact lead, and the outer ferrite element is magnetically coupled to the base plate and partially surrounds the inductive coupling element.
    Type: Grant
    Filed: June 15, 2015
    Date of Patent: November 27, 2018
    Assignee: TE Connectivity Nederland B.V.
    Inventors: Gied Habraken, Dirk-Jan Riezebos, Gils Van Wijnand, Peter Dirk Jaeger, Saoer Sinaga
  • Patent number: 10134523
    Abstract: A coil component has a core part 10 composing a closed magnetic path through which a closed loop of a magnetic flux passes, the magnetic flux being generated by two coils 14A, 14B that are arranged in parallel, and generate a magnetic field, and the core part 10 has a pair of I-type base cores 11A, 11B facing each other, and a pair of coupling core parts 11C, 11D. The coupling core parts 11C, 11D are each formed by linearly aligning three unit coupling cores 12A to 12F, and each of these cores 12A to 12F is formed into a configuration in which a column-shaped projection is provided on a core body, and a two-stage gap including a small gap and a large gap is to be formed mutually in a space in the adjacent unit cores 11A, 11B, and 12A to 12F by the configuration.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: November 20, 2018
    Assignee: SUMIDA CORPORATION
    Inventors: Hiroshi Kawashima, Takayuki Yamaguchi
  • Patent number: 10026543
    Abstract: A coil component includes a core including a winding portion and a flange portion extending from a first end of the winding portion, a coil wound around the winding portion, a lead formed at the flange portion, and a cover coupled to the flange portion and covering at least a portion of the coil.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: July 17, 2018
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Hyung Ho Kim, Jae Kwang Kim, Sang Ho Shin
  • Patent number: 9991043
    Abstract: An integrated magnetic assembly includes a magnetic core, an input winding inductively coupled to the magnetic core, a first output winding inductively coupled to the magnetic core, and a second output winding inductively coupled to the magnetic core. The magnetic core includes first and second non-winding legs, and first and second winding legs. The first and second non-winding legs are spaced apart from one another, and the magnetic core defines an opening between the first and second non-winding legs. The input winding extends through the opening between the first and second non-winding legs, and is wound around each of the first and second winding legs. The first output winding is wound around the first winding leg. The second output winding is wound around the second winding leg.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: June 5, 2018
    Assignee: General Electric Company
    Inventors: Joao Luiz Andres, Jouni Timo Uusitalo, Arturo Silva
  • Patent number: 9969282
    Abstract: Invention described herein relates to wireless power transfer systems and methods that efficiently and safely transfer power to electronic devices. In an aspect of the invention, an apparatus for wirelessly receiving power is provided. The apparatus comprises a receiver circuit comprising a receiver coil configured to receive wireless power from a wireless power transmitter via a magnetic field sufficient to charge or power a load of the apparatus. The receiver circuit further comprises a ferrite material having a first side coupled to the receiver coil. The apparatus further comprises a first heat exchanger coupled to a second side of the ferrite material.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: May 15, 2018
    Assignee: QUALCOMM Incorporated
    Inventors: Edward van Boheemen, Simon Islinger, Felix Weidner, Michael Werner
  • Patent number: 9941045
    Abstract: A coil former, also referred to herein as a bobbin, is provided for use in conduction-cooled magnetic components that contain an air gap. The diameter of the disclosed bobbin is increased and ribs/splines or tabs are created to keep the winding centered about the core center post while allowing thermally conductive silicone-based or equivalent encapsulant to fill the voids between the coil former and the core, the coil former and the windings and/or both depending on the placement of the locating tabs. The disclosed bobbin may be fabricated from traditional injection molding resins or from high-thermal conductivity resins. As a result of the disclosed bobbin designs, the achievable power density is increased while maintaining acceptable temperatures.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: April 10, 2018
    Assignee: Tesla, Inc.
    Inventors: Jennifer D Pollock, William T. Chi, Don Chiu
  • Patent number: 9882543
    Abstract: The technology described in this document can be embodied in an apparatus that includes at least four magnetic cores, wherein each core is for supporting an inductor of a filter circuit. Each of the cores include a first section, and a second section separated from the first section by an adhesive layer. The apparatus also includes an air-core structure to store magnetic energy, the air-core structure including a set of focusing projections that define a hollow cavity. The individual focusing projections of the set are disposed on different sides of the hollow cavity to focus magnetic field from the at least four magnetic cores through the hollow cavity.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: January 30, 2018
    Assignee: Bose Corporation
    Inventors: Ali Mohammadpour, Michael B. Nussbaum, Remco Terwal
  • Patent number: 9872626
    Abstract: A printed circuit board assembly includes a printed circuit board and a ferrite. The printed circuit board has a substantially planar top surface and a substantially planar bottom surface. The ferrite has an annular cross section that defines a channel. The ferrite is positioned on the printed circuit board such that a portion of the plurality of traces passes through the channel.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: January 23, 2018
    Assignee: WELCH ALLYN, INC.
    Inventors: Paul Delucia, Alan S. Knieriem, David M. Babson, David M. Fallat
  • Patent number: 9805856
    Abstract: A magnetic core (50) has a core shaft part which is inserted into a bobbin part, and configures a magnetic path of magnetic flux formed by a coil (40); the magnetic core (50) is configured by combining a pair of magnetic components (51, 52); the magnetic components (51, 52) have core ends formed so as to cross a core shaft part; the base part (20) has a fitting part which fits with at least one of the pair of core ends, when the core shaft part is inserted into the bobbin part; and the coil component (100) is characterized in that the pair of magnetic components (51, 52) and the bobbin base (10) are fixed to each other, while being bound by a sheet-like fixation member (70) which extends over the core end and the base part having been fitted to each other.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: October 31, 2017
    Assignee: SUMIDA CORPORATION
    Inventor: Naoki Sasaki
  • Patent number: 9679694
    Abstract: A manufacturing method of a reactor includes: assembling an assembly constituted by a coil and a bobbin by inserting the bobbin, which includes a tube portion and a flange portion, through the coil so that a tip of the tube portion protrudes from the coil; forming a cavity by installing the assembly in a first die so that a portion of a coil lateral face comes into contact with a cavity face of the first die, and closing a second die so that the second die is opposed to the first die; and extending first press rods from a cavity face of the second die toward the bobbin in the cavity, and injecting a resin into the cavity while pressing both ends of the bobbin in an axial direction of the coil from an opposite side to the portion of the coil lateral face.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: June 13, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Akio Kitami, Takashi Atsumi, Nobuki Shinohara, Takeshi Okada
  • Patent number: 9627125
    Abstract: Single phase inductors have non-linear inductance values, and M-phase coupled inductors having non-linear leakage inductance values. Each inductor includes, for example, at least one of the following: a saturable magnetic element, a gap of non-uniform thickness, a core formed of a distributed gap material, or a non-homogeneous core. A DC-to-DC converter includes an inductor having a non-linear inductance value, a switching subsystem, and an output filer. Another DC-to-DC converter includes an output filter, a coupled inductor having non-linear leakage inductance values, and switching subsystems.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: April 18, 2017
    Assignee: Volterra Semiconductor LLC
    Inventors: Alexandr Ikriannikov, Ognjen Djekic
  • Patent number: 9613745
    Abstract: In some embodiments, the instant invention can provide an electrical system that at least includes the following: a three-phase inductor, having: a core, having: at least one first core segment, having a first shape; at least one second core segment, having a second shape; at least one third core segment, having a third shape; where the at least one first core segment, the at least one second core segment, and the at least one third core segment are configured to be: separate from each other and adjustable relative to each other; and where the core is configured so that differential mode inductance flux paths during the operation of the three-phase inductor depend on the first shape of the at least one first core segment, the second shape of the at least one second core segment, and the third shape of the at least one third core segment.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: April 4, 2017
    Assignee: MTE Corporation
    Inventor: Todd Shudarek
  • Patent number: 9607750
    Abstract: An apparatus (e.g., an inductor system) includes an elongate magnetic core, at least one coil wrapped around the magnetic core and a spacer configured to separate an inner side of the at least one coil from the magnetic core to provide a coolant passage between the inner side of the at least one coil and the magnetic core. The apparatus further includes at least one flux concentrator body positioned on an outer side of the at least one coil and configured to concentrate a magnetic flux on the outer side of the at least one coil. In some embodiments, the apparatus includes a frame configured to support the magnetic core, the at least one coil and the at least one flux concentrator body. In further embodiments, the at least one flux concentrator body may be mounted on at least one wall of an enclosure or chassis.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: March 28, 2017
    Assignee: Eaton Corporation
    Inventors: George W. Oughton, Jr., Larry V. Lynam, Thomas A. Wallace
  • Patent number: 9589717
    Abstract: Divided cores 11, 12 includes left and right leg portions and a yoke portion and formed by molding a yoke portion side core material within resin. The leg portions of the divided core are formed by tubular core mounting portions 41, 42. I-shaped leg portion side core materials 51-53 and spacers 6 are mounted in the tubular core mounting portions. A ring-shaped molded core 1 is formed by abutting and integrating the respective leg portions of two divided cores, and a coil 100 is wound around the molded core.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: March 7, 2017
    Assignee: TAMURA CORPORATION
    Inventors: Kotaro Suzuki, Kensuke Maeno, Ryo Nakatsu
  • Patent number: 9553636
    Abstract: This contactless electricity supply device, which contactlessly performs charging of the battery (28) of a vehicle, is provided with: an electricity transmission coil (12) disposed at a road surface; and an electricity reception coil (22) disposed in the vehicle. A foreign object detection coil (13) is provided to the upper surface of the electricity transmission coil (12), and on the basis of induced voltage arising at the foreign object detection coil (13) during a trial electricity supply, foreign objects between the electricity transmission coil (12) and the electricity reception coil (22) are detected.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: January 24, 2017
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Kengo Maikawa, Tomoya Imazu
  • Patent number: 9475282
    Abstract: A liquid ejecting apparatus includes a signal modulation section that causes an original drive signal to be pulse-modulated to generate a modulation signal, a signal amplification section that amplifies the modulation signal to generate an amplification modulation signal, a coil that smooths the amplification modulation signal to generate a drive signal, a piezoelectric element that deforms when the drive signal is applied thereto, a cavity that expands or contracts due to a deformation of the piezoelectric element, and a nozzle that communicates with the cavity and ejects a liquid in accordance with an increase/decrease of a pressure inside the cavity. The coil is a ferrite core-type coil, and a core gap is provided to be equal to or wider than 1.1 mm.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: October 25, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Toru Kashimura, Hiroshi Sugita
  • Patent number: 9472335
    Abstract: A transformer module for an electric vehicle is provided. The transformer module includes a bobbin round which a primary-side coil is wound, a printed circuit board, and a secondary-side bus bar disposed between the bobbin and the printed circuit board, wherein a pattern part formed of an electrically conductive material to contact the bus bar is provided on the printed circuit board to electrically connect the pattern part to the bus bar in parallel.
    Type: Grant
    Filed: January 3, 2014
    Date of Patent: October 18, 2016
    Assignee: LSIS CO., LTD.
    Inventors: Jong In Sun, Woo Sup Kim, Bo Hyun Youn, Chun Suk Yang
  • Patent number: 9406429
    Abstract: According to one embodiment, a contactless power transfer transformer includes a both-sides wound coil. The both-sides wound coil includes an inter-magnetic-pole core portion between two magnetic pole portions. The winding wire is wound around a wound region of the inter-magnetic-pole core portion. The inter-magnetic-pole includes: a plurality of separate magnetic members that connect to each of the two magnetic pole portions, and are arranged with a spacing therebetween and in parallel with each other; and a heat conductor that is alternately arranged with respect to the separate magnetic members on a plane formed by the separate magnetic members so as to be in contact with the separate magnetic members. Heat generated by the separate magnetic members is guided to the outside of the wound region of the inter-magnetic-pole core portion through the heat conductor, and is dissipated.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: August 2, 2016
    Assignee: TECHNOVA INC.
    Inventors: Shigeru Abe, Yasuyoshi Kaneko, Tomio Yasuda
  • Patent number: 9378883
    Abstract: A transformer structure includes a first conductive plate, a second conductive plate, a circuit board and a core assembly. The first conductive plate has a first through hole and two first pins, and the first pins are formed by bending two ends of the first conductive plate respectively. The second conductive plate is installed opposite to the first conductive plate and has a second through hole and two second pins, and second pins are formed by bending the two ends of the second conductive plate respectively. The circuit board includes a winding, a positioning portion and a third through hole. The core assembly is electromagnetically coupled to the first conductive plate, the circuit board and the second conductive plate and passed through the first, second and third through holes to provide a high amperage and low-profile transformer structure.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: June 28, 2016
    Assignee: CHICONY POWER TECHNOLOGIES CO., LTD.
    Inventors: Hsien-Yi Tsai, Po-Ting Lin, Yu-Ting Yeh, Chi-Hsien Weng
  • Patent number: 9373438
    Abstract: A coupled inductor array has length, width, and height. The coupled inductor array includes a monolithic magnetic core formed of a magnetic material having a distributed gap, and a plurality of windings embedded in the monolithic magnetic core. Each winding forms a respective winding loop of one or more turns around a respective winding axis, and each winding axis extends in the height direction. Areas of the monolithic magnetic core enclosed by the winding loops are greater than areas of the monolithic magnetic core outside of the winding loops, as seen when the coupled inductor array is viewed cross-sectionally in the height direction. One possible application of the coupled inductor array is in a multi-phase switching power converter.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: June 21, 2016
    Assignee: Volterra Semiconductor LLC
    Inventors: Alexandr Ikriannikov, Ilija Jergovic, Andrew Burstein, Serhii Mikhailovich Zhak, Brett A. Miwa, Jizheng Qiu, Michael W. Baker, Justin Michael Burkhart, Xin Zhou
  • Patent number: 9373437
    Abstract: According to one embodiment, a contactless power transfer transformer includes a both-sides wound coil. The both-sides wound coil includes an inter-magnetic-pole core portion between two magnetic pole portions. The winding wire is wound around a wound region of the inter-magnetic-pole core portion. The inter-magnetic-pole includes: a plurality of separate magnetic members that connect to each of the two magnetic pole portions, and are arranged with a spacing therebetween and in parallel with each other; and a heat conductor that is alternately arranged with respect to the separate magnetic members on a plane formed by the separate magnetic members so as to be in contact with the separate magnetic members. Heat generated by the separate magnetic members is guided to the outside of the wound region of the inter-magnetic-pole core portion through the heat conductor, and is dissipated.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: June 21, 2016
    Assignee: TECHNOVA INC.
    Inventors: Shigeru Abe, Yasuyoshi Kaneko, Tomio Yasuda
  • Patent number: 9330822
    Abstract: A reactor includes a coil and a core unit having partial cores butted against one another to form a closed magnetic path. The partial cores include a first partial core forming and a second partial core. The first partial core is inserted in the hollow of the coil. A pressed face of the first partial core is oriented orthogonal to the winding axis direction of the coil. The second partial core is butted against the first partial core. A pressed face of the second partial core is oriented orthogonal to a direction different from the winding axis direction. The pressed face of the second partial core is a substantially flat plane.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: May 3, 2016
    Assignee: TAMURA CORPORATION
    Inventors: Ryo Nakatsu, Toshikazu Ninomiya, Kotaro Suzuki, Tsutomu Hamada
  • Patent number: 9318257
    Abstract: A packaged product includes a product, a product packaging at least partially covering the product, a device resonator integrated with the product packaging for receiving wireless energy from a source resonator and an electrical component coupled to the device resonator to receive the wireless energy from the device resonator.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: April 19, 2016
    Assignee: WiTricity Corporation
    Inventors: Herbert T. Lou, Morris P. Kesler, Katherine L. Hall, Eric R. Giler, Konrad J. Kulikowski
  • Patent number: 9030282
    Abstract: A permanent magnet DC inductor is disclosed which includes at least two separate and individual magnetic inductors, each having its own core structure and forming closed individual magnetic paths having at least one magnetic gap. Windings are provided on the magnetic cores, and at least one permanent magnet piece is provided with each inductor. The separate magnetic cores having the at least one magnetic gap are arranged against each other to form external magnetic gaps with the permanent magnet pieces arranged inside the external magnetic gaps on both sides of the at least one magnetic gap.
    Type: Grant
    Filed: February 4, 2010
    Date of Patent: May 12, 2015
    Assignee: ABB Oy
    Inventor: Paulius Pieteris
  • Patent number: 9024714
    Abstract: A static apparatus includes an iron core which includes a plurality of magnetic plates stacked in one direction and in which a shaft portion having a main surface and a side surface is formed, and a coil wound around the shaft portion. Slits extending in an axial direction of the shaft portion are formed in at least a surface layer magnetic plate constituting the main surface, of the plurality of magnetic plates. Some of the slits are formed in the main surface, at an end portion close to the side surface, at a predetermined formation density. The formation density of the slits is highest at the predetermined formation density, and is reduced as at least one of a minimum distance from the side surface within the main surface and a distance from the main surface on a side close to the slits in the stacking direction is increased.
    Type: Grant
    Filed: October 22, 2010
    Date of Patent: May 5, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tetsuya Matsuda, Ryuichi Nishiura, Hiroyuki Akita, Takeshi Imura, Yasuo Fujiwara, Yoshinori Shimizu, Kazuaki Aono
  • Patent number: 9019062
    Abstract: An inductive component has a winding and a core that includes a plurality of core areas that contain different magnetic materials.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: April 28, 2015
    Assignee: EPCOS AG
    Inventor: Kvetoslav Hejny
  • Patent number: 9019042
    Abstract: A high-frequency swinging choke has at least two rod cores arranged next to one another in the longitudinal direction. The rod cores each have at least one winding. The windings are connected in series.
    Type: Grant
    Filed: February 9, 2010
    Date of Patent: April 28, 2015
    Assignee: Epcos AG
    Inventors: Bernhard Roellgen, Herbert-Maurizio Cardarelli
  • Patent number: 9019061
    Abstract: A magnetic device formed with U-shaped core pieces employable in a power converter, and a method of forming the same. In one embodiment, the magnetic device includes a rectilinear core piece formed of a magnetic material, and first and second U-shaped core pieces positioned on the rectilinear core piece. The magnetic device also includes first and second conductive windings formed about the first and second U-shaped core pieces, respectively.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: April 28, 2015
    Assignee: Power Systems Technologies, Ltd.
    Inventor: Sriram Chandrasekaran
  • Publication number: 20150109086
    Abstract: There are provided a core and a coil component including the same. The core includes core pieces coupled to each other, each of the core pieces including: a plurality of legs; a connection part connecting one ends of the legs to each other; and at least one contact part formed at a distal end of at least one of the legs in a manner in which a cross-sectional area of the leg may be decreased.
    Type: Application
    Filed: December 23, 2013
    Publication date: April 23, 2015
    Applicants: INDUSTRY-ACADEMIC COOPERATION FOUNDATION GYEONGSANG NATIONAL UNIVERSITY, SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Sun WON, Tae Won HEO, Young Min LEE, Hwi Beom SHIN, Yong Hwan SHIN
  • Patent number: RE47976
    Abstract: An Inductive Power Transfer (IPT) pick-up apparatus includes a magnetically permeable core, a first coil, being wound about the core so as to be inductive coupled therewith such that a current induced in the first coil is most sensitive to a first directional component of magnetic flux and a second coil, being wound about the core so as to be inductively coupled therewith such that a current induced in the second coil is most sensitive to a second directional component of magnetic flux. The first directional component is substantially orthogonal to the second directional component.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: May 5, 2020
    Assignee: Auckland Uniservices Ltd.
    Inventors: John Talbot Boys, Grant Anthony Covic, Grant Arthur John Elliott