Laminated Type (includes Bundles Of Rods Or Wires) Patents (Class 336/234)
  • Patent number: 10256029
    Abstract: An electronic component includes a multilayer body having a configuration, in which a plurality of insulator layers containing ferrite ceramic are stacked, and a coil having a configuration, in which a plurality of coil conductor layers containing Ag and being disposed on the insulator layers are connected to at least one via hole conductor penetrating the insulator layers in the stacking direction, and having a spiral shape spiraling in the stacking direction. A first pore area ratio of a side gap interposed between an outer circumferential edge of an annular track formed by stacking the plurality of coil conductor layers and an outer edge of the multilayer body, when viewed in the stacking direction, is 9.0% or more and 20.0% or less, and the second pore area ratio of a portion interposed between two coil conductor layers in the stacking direction is 8.0% or less.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: April 9, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Norimichi Onozaki, Kaoru Tachibana, Mitsuru Odahara
  • Patent number: 9357651
    Abstract: An inductor is integrated into a multilevel wiring network of a semiconductor integrated circuit. The inductor includes a planar magnetic core and a conductive winding. The conductive winding turns around in generally spiral manner on the outside of the planar magnetic core. The conductive winding is piecewise constructed of wire segments and of VIAs. The wire segments pertain to at least two wiring planes and the VIAs are interconnecting the at least two wiring planes. Methods for such integration, and for fabricating laminated planar magnetic cores are also presented.
    Type: Grant
    Filed: October 17, 2014
    Date of Patent: May 31, 2016
    Assignee: Ferric Inc.
    Inventor: Noah Andrew Sturcken
  • Patent number: 9030287
    Abstract: A filter body of a common mode noise filter includes: a non-magnetic body; a first magnetic body and a second magnetic body sandwiching the non-magnetic body; and a first coil conductor and a second coil conductor of planar shape which are embedded in the non-magnetic body and positioned on the first magnetic body side and second magnetic body side in the non-magnetic body in a manner facing each other in a non-contact state; and also has a non-magnetic first protective part and second protective part which are made of a non-magnetic material whose strength is higher than the first magnetic body and second magnetic body and which are positioned on the outermost side of the filter body in a manner sandwiching the first magnetic body and second magnetic body.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: May 12, 2015
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Yoshiyuki Motomiya, Koji Taketomi, Kenichiro Nogi, Takumi Takahashi, Katsuyuki Kayahara
  • Patent number: 9013263
    Abstract: Disclosed is a wound iron core (3) for a static apparatus in which magnetic paths in the inside of the wound iron core are subdivided to improve iron core characteristics. The iron core (3) is configured by using two or more kinds of magnetic materials (11 to 14) with different magnetic permeabilities to form laminated blocks with single plates or a plurality of laminated plates and by alternately arranging the laminated blocks with different magnetic permeabilities from the inner circumference. An iron core material (14) with large magnetic permeability out of iron core materials with different magnetic permeabilities is arranged on the inner circumference side. Further, when the iron core materials with different magnetic permeabilities are alternately arranged, the iron core materials (11) with the same magnetic permeability are configured to gradually change in thickness to ease an excessive magnetic flux density distribution in the iron core.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: April 21, 2015
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kenji Nakanoue, Kazuyuki Fukui, Hidemasa Yamaguchi, Kouhei Satou, Tatsuhito Azegami, Makoto Shinohara, Toshiaki Takahashi, Tooru Honma, Masanao Kuwabara, Toshiki Shirahata, Yuuji Satou, Manabu Dohi, Ryosuke Mikoshiba, Hiroyuki Endou
  • Patent number: 9007160
    Abstract: A laminated inductor includes a laminate constituted by multiple insulator layers, and a coil conductor formed in a spiral shape inside the laminate; wherein the coil conductor has conductor patterns formed on the insulator layers, and via hole conductors that penetrate through the insulator layers and electrically connect the multiple conductor patterns; wherein conductor patterns formed on some insulator layers each represent a C-shaped pattern that includes the four corners and has an open part on one side, of a roughly rectangular shape, while a conductor pattern formed on other insulator layer(s) represents a line-shaped pattern corresponding to the open part of one side of the aforementioned C-shaped pattern of the roughly rectangular shape; and wherein an insulator layer on which the C-shaped pattern is formed, and insulator layer(s) on which the line-shaped pattern is formed, adjoin each other at least in one part of the laminate.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: April 14, 2015
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Ichirou Yokoyama, Taisuke Suzuki, Yasuyuki Taki, Kazuhiko Oyama
  • Patent number: 9007159
    Abstract: A coil-type electronic component having a coil inside or on the surface of a base material is characterized in that the base material of the coil-type electronic component is constituted by a group of soft magnetic alloy grains inter-bonded via oxide layers, multiple crystal grains are present in each soft magnetic alloy grain, and the oxide layers preferably have a two-layer structure whose outer layer is thicker than the inner layer.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: April 14, 2015
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Masahiro Hachiya, Atsushi Tanada, Kenji Otake, Kiyoshi Tanaka, Tetsuyuki Suzuki
  • Patent number: 8988180
    Abstract: A multilayer coil component has an element body, a coil, a pair of first external electrodes, a pair of second external electrodes, a first connection conductor, and a second connection conductor. The coil is composed of a plurality of internal conductors arranged in the element body and connected to each other. The first external electrodes are arranged on a first principal face of the element body. The second external electrodes are arranged on the first principal face. The first connection conductor is arranged between the coil and the first external electrodes in the element body and is connected to one end of the coil and to the first external electrodes. The second connection conductor is arranged between the coil and the second external electrodes in the element body and is connected to the other end of the coil and to the second external electrodes.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: March 24, 2015
    Assignee: TDK Corporation
    Inventors: Masazumi Arata, Yoji Tozawa, Takashi Endo, Toshiki Satoh, Takuya Kamei
  • Patent number: 8981889
    Abstract: Disclosed herein is a common mode filter with an ESD protection pattern built therein. The common mode filter includes a base substrate that is made of an insulating material, a first insulating layer that is formed on the base substrate, a coil-shaped internal electrode that is formed on the first insulating layer, a second insulating layer that is formed on the internal electrode, a first external electrode terminal that is formed on the second insulating layer, a first ferrite resin layer that is formed on the second insulating layer and receives the first external electrode terminal, an ESD protection pattern that is formed on the first external electrode terminal, a second external electrode terminal that is formed on the ESD protection pattern, and a second ferrite resin layer that is formed on the first ferrite resin layer and receives the second external electrode terminal.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 17, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Young Seuck Yoo, Kang Heon Hur, Jun Hee Bae, Yong Suk Kim, Sang Moon Lee, Won Chul Sim, Young Do Kweon, Sung Kwon Wi
  • Patent number: 8975997
    Abstract: In a planar coil element, the quantitative ratio of inclined particles to total particles of a first metal magnetic powder contained in a metal magnetic powder-containing resin provided in a through hole of a coil unit is higher than the quantitative ratio of inclined particles to total particles of the first metal magnetic powder contained in the metal magnetic powder-containing resin provided in other than the through hole, and many of particles of the first metal magnetic powder in the magnetic core are inclined particles whose major axes are inclined with respect to the thickness direction and the planar direction of a substrate. Therefore, the planar coil element has improved strength as compared to a planar coil element shown in FIG. 9A and has improved magnetic permeability as compared to a planar coil element shown in FIG. 9B.
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: March 10, 2015
    Assignee: TDK Corporation
    Inventors: Kyohei Tonoyama, Makoto Morita, Tomokazu Ito, Hitoshi Ohkubo, Manabu Ohta, Yoshihiro Maeda, Yuuya Kaname, Hideharu Moro
  • Patent number: 8959752
    Abstract: A transformer core manufacturing apparatus for manufacturing an annular transformer core having thin plates formed of magnetic materials laminated includes an uncoiler unit which allows a plurality of uncoilers each having a thin plate magnetic material coiled hoop-like to uncoil the magnetic material, a carrier unit for guiding a plurality of the magnetic materials uncoiled from the plurality of the uncoilers as a single group of magnetic body, a first alignment unit for aligning the carried group of the single magnetic body in a width direction, a cut-off unit for cutting the magnetic body aligned by the first alignment unit in a predetermined dimension, a laminating unit for laminating a plurality of the groups of the magnetic body cut by the cut-off unit, a second alignment unit for aligning the magnetic body laminated on the laminating unit, and a control unit for controlling operations of the above cited units.
    Type: Grant
    Filed: July 20, 2011
    Date of Patent: February 24, 2015
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Shunsuke Ikeda, Junichi Ishizuki, Takashi Kurata, Eisuke Maruyama
  • Patent number: 8943677
    Abstract: A method for joining core laminations by adhesive force to form a soft-magnetic laminated core by applying a coating that is wettable with epoxy resin to top sides and undersides of each sheet. The sheets are separated into core laminations made of soft-magnetic sheets, which are stacked to form a core lamination stack, and a cured adhesive introduced in a state of low viscosity into interstices between the core laminations. The core lamination stack has intermediate layers between the core laminations. For this purpose, the core laminations comprise a final-annealed, crystalline CoFe alloy, an adhesive-wettable top side and an adhesive-wettable underside. Together with the intermediate layers, the core laminations form a dimensionally accurate laminated core. The laminated core has a substantially adhesive-free contour consisting of contour surfaces of the core laminations. The adhesive is solvent-free in its low-viscosity state.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: February 3, 2015
    Assignee: Vacuumschmelze GmbH & Co. KB
    Inventors: Joachim Gerster, Witold Pieper, Harald Staubach, Dominik Fackelmann
  • Patent number: 8947189
    Abstract: A group of magnetic sheets are stacked and connected via through-holes, on each of which magnetic sheets a circling pattern having connection parts at its corners and ends is formed to form a spiral coil pattern. Leader patterns each have a leader part formed at a position not overlapping with the circling parts of the coil pattern and connected to an external terminal electrode, as well as two connection parts that continue to the leader part and are formed at positions corresponding to the connection parts of the circling patterns, together with a cutout formed between the two connection parts. Magnetic sheets with the leader patterns are provided at the top and bottom of the laminate forming the coil pattern. The multilayer chip inductor can suppress decrease in core area caused by displacement due to the stacking.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: February 3, 2015
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Yoshikazu Maruyama, Masataka Kohara, Kazuhiko Oyama
  • Publication number: 20150022410
    Abstract: An antenna magnetic core of an embodiment has a laminate of a Co-based amorphous magnetic alloy thin strip and a resin layer part having an average thickness in a range of from 1 to 10 ?m. Dispersion of thicknesses of the resin layer part is within ±40% in relation to the average thickness.
    Type: Application
    Filed: August 1, 2014
    Publication date: January 22, 2015
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Katsuhiko YAMADA, Tadao Saito
  • Patent number: 8933773
    Abstract: A layer structure for producing a planar insulation laminate, including the following sequence of planar individual layers arranged one on the other: a B-stage resin, a glass fabric, a core layer made of polyester film, a glass fabric, and a B-stage resin. In the hardened state, an insulation material produced therefrom is suitable, for example, to be used as an insulation barrier between a low-voltage winding and a high-voltage winding of a transformer winding.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: January 13, 2015
    Assignee: ABB Technology AG
    Inventor: Jörg Nelges
  • Patent number: 8928337
    Abstract: Disclosed herein are embodiments of devices for measuring electrical current and related systems and methods for forming and using such devices. According to certain embodiments, devices according to the present disclosure may comprise Rogowski coils. Also disclosed are systems and methods for forming a current measuring device using a bobbin that may allow for the use of a continuous length of wire for all windings associated with the current measuring device. Automated manufacturing techniques may be utilized to facilitate the manufacture of devices for measuring electrical current and/or may reduce the cost of such devices. Various embodiments disclosed herein include the use of a bobbin that may be selectively configured between a linear configuration and a closed configuration. One or more current sensors disclosed herein may be utilized in connection with a motor management relay or other type of intelligent electronic device.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: January 6, 2015
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: James R. Kesler, Veselin Skendzic
  • Patent number: 8922326
    Abstract: A laminated electronic component includes a first magnetic material portion, a low-magnetic-permeability portion laminated on the first magnetic material portion, a second magnetic material portion laminated on the low-magnetic-permeability portion, at least one annular or spiral coil disposed within the low-magnetic-permeability portion, and a plurality of columnar magnetic material portions disposed within the low-magnetic-permeability portion so as to extend through inside of the coil and connecting the first magnetic material portion to the second magnetic material portion.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: December 30, 2014
    Assignee: Murata Manufactring Co., Ltd.
    Inventors: Masaki Inui, Hiromu Fukushima
  • Patent number: 8912874
    Abstract: A monolithic ceramic electronic component including coil conductors is capable of reducing the number of stacked ceramic layers without sacrifice of the performance of coils and be capable of increasing the number of turns of the coils without increasing the size in. In the monolithic ceramic electronic component, coil conductors having more than one turn for one ceramic layer are formed. The coil conductors include surface coil conductors that are located along surfaces of sequentially stacked ceramic layers and intra-layer coil conductors that are located inside the ceramic layers so as not to extend beyond the thickness of the individual ceramic layers. The surface coil conductors and the intra-layer coil conductors are connected in series with connecting portions therebetween.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: December 16, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Yoshihito Otsubo
  • Publication number: 20140354386
    Abstract: Three-phase magnetic cores for magnetic induction devices (e.g., transformers, coils, chokes), and methods for manufacturing them, are disclosed. The magnetic cores are generally constructed from three generally rectangular magnetic core frames having a stair-stepped configuration extending along side portions of the frames. The frames are arranged to form a triangular prism structure such that side portions of locally adjacent frames are uniformly engaged to form three core legs over which coils of a three-phase magnetic induction device may be placed.
    Type: Application
    Filed: January 15, 2013
    Publication date: December 4, 2014
    Applicant: U.T.T. UNIQUE TRANSFORMER TECHNOLGIES LTD
    Inventors: Eliezer Adar, Yuri Bolotinsky
  • Patent number: 8869383
    Abstract: A magnetics assembly (100) including a transformer (1) made of litz wire. The transformer includes a toroid core (2) and a bundle of wires (3) winding around the toroid core. The bundle of wires includes first to eighth wires, and has a central portion with all eight wires twisted together and winding around the toroid core. First and second ends of the bundle of wires oppositely extend out from the toroidal core. The ends of the first to eighth wires are connected to form a primary and a secondary coils of the transformer, wherein the second ends of the first wire and the second wire, and the first ends of the third wire and the fourth wire are sorted out to form central taps (35, 36) of the primary and secondary coils, respectively.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: October 28, 2014
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Yong-Chun Xu, Jie Zhang
  • Patent number: 8872614
    Abstract: A transformer includes a leg iron core including a plurality of magnetic sheets stacked in one direction (Z axis direction), and a coil wound around the leg iron core. A slit is formed in at least a magnetic sheet which faces an inner peripheral surface of the coil in a stacking direction of the plurality of magnetic sheets, of the plurality of magnetic sheets. Since eddy current is divided by the slit, eddy current density can be reduced. By reducing the eddy current density, loss density in an iron core can be reduced. By reducing the loss density in the iron core, loss in the transformer can be reduced.
    Type: Grant
    Filed: October 19, 2010
    Date of Patent: October 28, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Ryuichi Nishiura, Yasuo Fujiwara, Yoshinori Shimizu, Tetsuya Matsuda, Takeshi Imura, Kazuaki Aono, Hiroyuki Akita
  • Patent number: 8847724
    Abstract: There is provided a laminated inductor including: a body in which a plurality of magnetic layers are stacked; at least one non-magnetic layers interposed between the magnetic layers and including a Al2O3 dielectric material and a K—B—Si-based glass; and a plurality of internal electrodes formed on the magnetic layers.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: September 30, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Myeong Gi Kim, Sung Yong An
  • Patent number: 8826514
    Abstract: Microfabricated inductors with through-wafer vias and including a first wafer and a second wafer, each wafer having a plurality of metal fillings therein, and a plurality of metal conductors connecting the plurality of metal fillings together to form a spiral. A method for producing an inductor including steps of forming a first plurality of vias in a first substrate, filling the first plurality of vias in the first substrate with a first plurality of metal fillings, forming a first plurality of metal conductors, connecting pairs of the first plurality of metal fillings together using the first plurality of metal conductors to form a spiral, performing the foregoing steps similarly on a second substrate formed with a second plurality of vias filled with a second plurality of metal fillings, and bonding the first substrate with the second substrate.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: September 9, 2014
    Assignee: Teledyne Scientific & Imaging, LLC
    Inventors: Alexandros Papavasiliou, Jeffrey F. DeNatale, Philip A. Stupar, Robert L. Borwick, III
  • Patent number: 8797136
    Abstract: A laminated common-mode choke coil offering higher insulation reliability has a glass ceramic layer, two spiral internal conductors facing each other and sandwiching the glass ceramic layer in between, and insulation layers sandwiching the two internal conductors, wherein the glass ceramic layer contains segregated Al regions and the maximum dimension t1 of each segregated Al region in the glass ceramic layer, in the layer-thickness direction, is no more than 80% of the distance t0 between the two internal conductors.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: August 5, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Takashi Nakajima, Mika Tamanoi, Kenji Otake
  • Patent number: 8779884
    Abstract: There is provided a multilayered inductor, including: an inductor body; a coil part formed on the inductor body and having a conductive circuit and a conductive via; and external electrodes formed on both end surfaces of the inductor body, wherein the inductor body includes 65 to 95 wt % of a metallic magnetic material and 5 to 35 wt % of an organic material.
    Type: Grant
    Filed: February 22, 2012
    Date of Patent: July 15, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Myeong Gi Kim, Sung Yong An
  • Patent number: 8773232
    Abstract: In a high frequency transformer, when a current flows between input-output ports, a magnetic flux produced by first and third coil conductor patterns of a primary coil is interlinked with a second coil conductor pattern of a secondary coil. A magnetic flux produced by the second coil conductor pattern of the primary coil is interlinked with the first and third coil conductor patterns of the secondary coil. The coil conductor patterns are wound so that when a current flows through a transformer, the directions of magnetic fields occurring within the first and third coil conductor patterns of the primary coil and the second coil conductor pattern of the secondary coil are the same and the directions of magnetic fields occurring within the first and third coil conductor patterns of the secondary coil and the second coil conductor pattern of the primary coil are the same.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: July 8, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Noboru Kato
  • Patent number: 8760256
    Abstract: An electronic component that can be prevented from being mounted on a circuit board with inclination, and a manufacturing method thereof are provided. An electronic component is mountable on a circuit board including a first land and a second land. The electronic component includes outer electrodes on a lower surface of a stack to be arranged along a direction and are connectable to the first land and the second land, respectively. With the electronic component mounted to the circuit board, respective contact surfaces of the outer electrodes to the first land and the second land have a structure being symmetric about a line parallel to the direction, and each respective contact surface is divided into a plurality of portions.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: June 24, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Mitsuru Odahara, Hideaki Matsushima, Akihiro Ono
  • Patent number: 8749338
    Abstract: A laminated electronic component with adjacent wires (such as coil conductors) in insulator layers inter-connected through via holes, wherein its laminate is structured in such a way that a coil-embedded layer constituted by first insulator layers and second insulator layers laminated alternately is sandwiched between a top magnetic layer and bottom magnetic layer, with external electrodes formed on both end faces. First coil conductors are formed on the first insulator layers and second coil conductors are formed on the second insulator layers, with these coil conductors connected through via holes. Formed at the end of each second coil conductor is a connection conductor of a size sufficiently large to block off the top of the via hole provided in the insulator sheet.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: June 10, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventor: Osamu Takahashi
  • Patent number: 8742881
    Abstract: An electronic component that can be prevented from being shifted from a normal mount position and can be manufactured with a low cost is provided. The component is configured by stacking a plurality of insulating layers and a plurality of inner conductors provided on the respective insulating layers. The connection conductors have respective exposure portions that are each exposed between corresponding ones of the insulating layers at a surface of the stack. An outer electrode is formed, for example, by plating on the lower surface so that the exposure portions are covered with the outer electrode. The plurality of exposure portions do not have uniform thicknesses or are not arranged at uniform intervals in the stacking direction.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: June 3, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Akihiro Ono, Mitsuru Odahara, Hideaki Matsushima
  • Patent number: 8736415
    Abstract: The invention provides an amorphous alloy stereo wound-core, comprising three structurally identical amorphous alloy made square frames; the cross section of the sides of the frames is in an approximately semi-circular or semi-polygonal shape; the frames have semi-circular cross sections and uniform thicknesses; the vertical sides of every two adjacent frames fit together fixedly to form a core pillar, the horizontal sides of the frames form iron yokes; the cross section of each core pillar has a circular or regular-polygonal shape. With this structure, the magnetic conduction direction of the amorphous alloy is completely consistent with the magnetic circuit direction of the core, and its working vibration is small. This core structure guarantees balanced three-phase power supply and largely reduces the magnetic resistance and excited current. There is no seam in the amorphous alloy stereo wound-core, so there is no area with high energy consumption.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: May 27, 2014
    Assignee: Guangdong Hai Hong Co., Ltd.
    Inventors: Kaixuan Xu, Xianqing Guo
  • Patent number: 8729999
    Abstract: There is provided a multi-layered chip electronic component, including: a multi-layered body including a plurality of first magnetic layers on which conductive patterns are formed; and second magnetic layers interposed between the first magnetic layers within the multi-layered body, wherein the conductive patterns are electrically connected to form coil patterns in a stacking direction, and when a thickness of the second magnetic layer is defined as Ts and a thickness of the conductive pattern is defined as Te, 0.1?Ts:Te?0.3 is satisfied.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: May 20, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jin Woo Hahn, Sung Yong An, Soo Hwan Son, Ic Seob Kim, Byeong Cheol Moon
  • Patent number: 8723634
    Abstract: A coil-type electronic component has a coil inside or on an outer surface of its base material and is characterized in that: the base material is constituted by a group of grains of a soft magnetic alloy containing iron, silicon and other element that oxidizes more easily than iron; the surface of each soft magnetic alloy grain has an oxide layer formed on its surface as a result of oxidization of the grain; the oxide layer contains the other element that oxidizes more easily than iron by a quantity larger than that in the soft magnetic alloy grain; and grains are bonded with one another via the oxide layer.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: May 13, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hideki Ogawa, Atsushi Tanada, Hitoshi Matsuura, Kiyoshi Tanaka, Hiroshi Kishi, Kenji Kawano
  • Patent number: 8717135
    Abstract: An electronic component has a drum-shaped core member constituted by an assembly of soft magnetic alloy grains containing iron (Fe), silicate (Si) and chromium (Cr), a coil conductive wire wound around the core member, a pair of terminal electrodes connected to ends of the coil conductive wire, and an outer sheath resin part covering the wound coil conductive wire and constituted by a magnetic powder-containing resin; wherein there is an area where only the resin material in the magnetic powder-containing resin is permeated from the surface of the core member to a specified depth.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: May 6, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Koichiro Wada, Masashi Kuwahara, Yoshinari Nakada, Yuichi Kasuya, Masanori Takahashi, Tetsuo Kumahora
  • Patent number: 8704629
    Abstract: A coil-type electronic component has a coil inside or on the surface of its base material and is characterized in that: the base material is constituted by a group of grains of a soft magnetic alloy containing iron, silicon and other element that oxidizes more easily than iron; the surface of each soft magnetic alloy grain has an oxide layer formed on its surface as a result of oxidization of the grain; this oxide layer contains the other element that oxidizes more easily than iron by a quantity larger than that in the soft magnetic alloy grain; and grains are bonded with one another via this oxide layer.
    Type: Grant
    Filed: January 12, 2012
    Date of Patent: April 22, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hideki Ogawa, Atsushi Tanada, Hitoshi Matsuura, Kiyoshi Tanaka, Hiroshi Kishi, Kenji Kawano
  • Patent number: 8677608
    Abstract: An annular core member having an opening portion located at a position rotated by 90 degrees from a reference position, where the opening portion is oriented in the counterclockwise direction, and an annular core member having the opening portion located at the reference position, where the opening portion is oriented in the clockwise direction, are prepared to form an iron core by a rotary lamination apparatus by rotating the annular core members and by a predetermined angle (90 degrees) such that a first end, in the annular core member, which is at the position rotated by 90 degrees from the reference position and has no rotation uneven part, is circumference-positionally identical in the laminating direction with that of a fourth end, in an annular core member, which is at the reference position and has no rotation uneven part.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: March 25, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroyuki Akita, Kimiyasu Furusawa
  • Patent number: 8669839
    Abstract: A laminated inductor includes: a laminate constituted by multiple insulator layers; external electrodes formed on the outside of the laminate; and a coil conductor formed spirally inside the laminate, wherein the coil conductor has leaders that electrically connect to the external electrodes and a coil body other than the leaders, wherein the coil conductor has conductive patterns formed on the insulator layers, and via hole conductors that penetrate through the insulator layers and electrically connect the multiple conductor patterns, wherein all of the conductor patterns constituting the coil body are either a C-shaped pattern or line-shaped pattern, wherein the coil body has a partial structure where two or more C-shaped pattern layers are stacked together successively, and wherein the number of C-shaped patterns in the coil body is greater than that of line-shaped patterns.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: March 11, 2014
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Ichirou Yokoyama, Taisuke Suzuki, Yasuyuki Taki, Kazuhiko Oyama
  • Patent number: 8653931
    Abstract: Power conversion systems and integrated multi-phase chokes providing high common mode to differential mode choke inductance ratios with circular and triangular shapes for concurrent differential filtering and common-mode voltage blocking in motor drives and other power conversion applications.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: February 18, 2014
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: David Dewei Xu, Ning Zhu, Yuan Xiao, Bin Wu
  • Patent number: 8633794
    Abstract: An electronic component and manufacturing method for preparing an electronic component includes providing a first insulator layer having a first nickel content rate. A coil conductor and a second insulator layer having a first bismuth content rate and a second nickel content rate higher than the first nickel content rate are provided on the first insulator layer. The first insulator layer, the coil conductor, and the second insulator layer constitute a first unit layer. The first unit layer and an exterior insulator layer are laminated to obtain a laminate. After a step of firing the laminate, a nickel content rate in a first portion of the first insulator layer, the first portion being sandwiched between the coil conductors from both sides facing in a lamination direction, is lower than a nickel content rate in a second portion of the first insulator layer other than the first portion.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: January 21, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Yoichiro Ito
  • Patent number: 8618902
    Abstract: A laminated inductor, which offers high inductance while suppressing increase in direct-current resistance, has a rectangular solid laminate and a pair of terminal electrodes formed only on the bottom face of the laminate, wherein a folded conductor piece is provided on the first magnetic layer in a manner constituting around one turn worth of the windings, with one end placed near the first corner and the other end placed at a position toward the center and away from this one end so as not to overlap with the one end, while one of multiple sets of coil conductor pieces, each set constituting around one turn worth of the windings, is placed on multiple magnetic layers in the laminate.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: December 31, 2013
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Kenichirou Nogi, Masanori Nagano, Mayumi Hoshino
  • Patent number: 8610532
    Abstract: A protective coating system for application to exposed surfaces of a transformer core prevents corrosion of the core. The protective coating is suitable for use in industrial and marine environments where many factors impact the life of the transformer core. The protective coating comprises at least three coating layers. The first coating layer is an inorganic zinc silicate primer. The second coating layer is a polysiloxane. The third coating layer is a room temperature or high temperature vulcanizing silicone rubber. A silicone rubber sealant may be further applied to outer edge surfaces of the core.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: December 17, 2013
    Assignee: ABB Technology AG
    Inventors: Bandeep Singh, Thomas A. Hartmann, Robert C. Ballard
  • Patent number: 8610525
    Abstract: A laminated inductor having an internal conductive wire forming region, as well as a top cover region and bottom cover region formed in a manner sandwiching the internal conductive wire forming region between top and bottom; wherein the internal conductive wire forming region has a magnetic part formed with soft magnetic alloy grains, as well as helical internal conductive wires embedded in the magnetic part and constituted by a conductor; and at least one of the top cover region and bottom cover region (or preferably both) is/are formed with soft magnetic alloy grains whose constituent elements are of the same types as those of, and whose average grain size is greater than that of, the soft magnetic alloy grains constituting the magnetic part in the internal conductive wire forming region.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: December 17, 2013
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Hitoshi Matsuura, Takayuki Arai, Kenji Otake
  • Publication number: 20130314198
    Abstract: A rapidly quenched Fe-based soft-magnetic alloy ribbon having wave-like undulations on a free surface, the wave-like undulations having transverse troughs arranged at substantially constant intervals in a longitudinal direction, and the troughs having an average amplitude D of 20 mm or less, is produced by a method comprising (a) keeping a transverse temperature distribution in a melt nozzle within ±15° C. to have as small a temperature distribution as possible in a melt paddle of the alloy, and (b) forming numerous fine linear scratches on a cooling roll surface by a wire brush, thereby providing a ground surface of the cooling roll with an arithmetical mean (average) roughness Ra of 0.1-1 ?m and a maximum roughness depth Rmax of 0.5-10 ?m.
    Type: Application
    Filed: January 27, 2012
    Publication date: November 28, 2013
    Applicant: HITACHI METALS, LTD.
    Inventors: Yoshihito Yoshizawa, Motoki Ohta, Naoki Ito
  • Patent number: 8593247
    Abstract: There is provided a chip-type coil component, including: a body formed by laminating a plurality of magnetic layers, and having a lower surface provided as a mounting area, an upper surface corresponding thereto, two end surfaces, and two lateral surfaces; conductor patterns formed on the magnetic layers, respectively, and connected to each other to have a coil structure; and external electrodes formed on at least one external surface of the body, and electrically connected to the conductor patterns, the external electrodes each being formed on the lower surface and spaced apart from edges thereof. Short circuits between electronic components may be prevented and sticking strength between the chip-type coil component and a substrate may be increased.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: November 26, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Dong Jin Jeong, Jae Wook Lee
  • Patent number: 8567040
    Abstract: An iron core includes an electromagnetic steel plate having a first region on the surface of which an insulating film is formed and a second region which is not covered with the insulating film and exposed, and a coating member which coats at least the second region. The second region is formed by removing the insulating film by machining.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: October 29, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroyoshi Kubo
  • Patent number: 8558652
    Abstract: Provided is a laminated inductor having a magnetic body, a conductor part covered in a manner directly contacting the magnetic body, and external terminals provided on the outside of the magnetic body and conducting to the conductor part; wherein the magnetic body is a laminate constituted by layers containing soft magnetic alloy grains, and the soft magnetic alloy grain contacting the conductor part is flattened on the conductor part side.
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: October 15, 2013
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Takayuki Arai, Hitoshi Matsuura, Kenji Otake
  • Patent number: 8525630
    Abstract: A laminated inductor having a laminate structure constituted by magnetic layers and internal conductive wire-forming layers, wherein the magnetic layer is formed by soft magnetic alloy grains, the internal conductive wire-forming layer has an internal conductive wire and a reverse pattern portion around it, and the reverse pattern portion is formed by soft magnetic alloy grains whose constituent elements are of the same types as those of, and whose average grain size is greater than that of, the soft magnetic alloy grains constituting the magnetic layer.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: September 3, 2013
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Tomomi Kobayashi, Hitoshi Matsuura, Takayuki Arai, Masahiro Hachiya, Kenji Otake
  • Patent number: 8510932
    Abstract: A method for manufacture of a conductor assembly. The assembly is of the type which, when conducting current, generates a magnetic field or in which, in the presence of a changing magnetic field, a voltage is induced. In an example embodiment one or more first coil rows are formed. The assembly has multiple coil rows about an axis with outer coil rows formed about inner coil rows. A determination is made of deviations from specifications associated with the formed one or more first coil rows. One or more deviations correspond to a magnitude of a multipole field component which departs from a field specification. Based on the deviations, one or more wiring patterns are generated for one or more second coil rows to be formed about the one or more first coil rows. The one or more second coil rows are formed in the assembly. The magnitude of each multipole field component that departs from the field specification is offset.
    Type: Grant
    Filed: July 5, 2011
    Date of Patent: August 20, 2013
    Assignee: Advanced Magnet Lab, Inc.
    Inventor: Rainer Meinke
  • Patent number: 8466766
    Abstract: An inductor core device, and method of forming same, that has at least a first inductor core section and typically has a second inductor core section, both formed of stacked layers of conductive material. The second core section may be positioned relative to the first core section to define an air gap therebetween and the sections are preferably profiled between their respective end faces and broad surfaces to reduce the eddy current losses induced in the core section(s) near the air gap. Various embodiments, “profile” shaping configurations, and core section arrangements are disclosed.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: June 18, 2013
    Assignee: Peregrine Power, LLC
    Inventor: Bruce W. Carsten
  • Publication number: 20130141202
    Abstract: A magnetic fault current limiter core (10a) comprising at least one first magnetic element (12) and at least one second magnetic element (14), the magnetic elements (12,14) being arranged to define a substantially parallel array of magnetic elements (12,14), the or each first magnetic element (12) including a soft magnetic material and the or each second magnetic element (14) including a hard magnetic material, wherein the or each soft magnetic material in a non-saturated state has a higher magnetic permeability than the or each hard magnetic material.
    Type: Application
    Filed: August 3, 2010
    Publication date: June 6, 2013
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventor: Jonathan Peter Sturgess
  • Publication number: 20130106561
    Abstract: The invention provides an amorphous alloy stereo wound-core, comprising three structurally identical amorphous alloy made square frames; the cross section of the sides of the frames is in an approximately semi-circular or semi-polygonal shape; the frames have semi-circular cross sections and uniform thicknesses; the vertical sides of every two adjacent frames fit together fixedly to form a core pillar, the horizontal sides of the frames form iron yokes; the cross section of each core pillar has a circular or regular-polygonal shape. With this structure, the magnetic conduction direction of the amorphous alloy is completely consistent with the magnetic circuit direction of the core, and its working vibration is small. This core structure guarantees balanced three-phase power supply and largely reduces the magnetic resistance and excited current. There is no seam in the amorphous alloy stereo wound-core, so there is no area with high energy consumption.
    Type: Application
    Filed: October 31, 2011
    Publication date: May 2, 2013
    Inventors: Kaixuan Xu, Xianqing Guo
  • Patent number: 8427272
    Abstract: An amorphous alloy-based magnetic core with reduced audible noise and a method of making the amorphous alloy-based magnetic core emanating low audible noise, including: placing the core with multiple layers of high strength tape on the core legs, wherein the tapes have a high tensile strength, high dielectric strength and high service temperature, resulting in reduced level of audible noise. When operated under optimum condition, the reduced level of audible noise is 6-10 dB less when compared with a same-size core that has been coated with resin instead.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: April 23, 2013
    Assignee: Metglas, Inc.
    Inventors: Mark Robert Columbus, Robert Brown, Kengo Takahashi, Ryusuke Hasegawa