Wound Core Patents (Class 336/213)
  • Patent number: 9651633
    Abstract: A magnetic core flux sensor assembly may include a flux sensor core portion and an elongated opening for receiving a conductor winding through the flux sensor core portion. The flux sensor core portion may include a width from a perimeter edge of the flux sensor core portion to the elongated opening that is constant. An electrical current flowing through the conductor winding generates a magnetic field about the conductor winding and a magnetic flux flow in the flux sensor core portion. One or more sensor holes may be positioned relative to the elongated opening for sensing the magnetic flux flow at different distances from the elongated opening. A sensor conductor winding may extend through each pair of sensor holes. The magnetic flux flow generates an electrical signal in each sensor conductor winding. The electrical signal corresponds to the magnetic flux flow at a location of the particular sensor conductor winding.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: May 16, 2017
    Assignee: The Boeing Company
    Inventor: James Leo Peck, Jr.
  • Patent number: 9466882
    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: Grant
    Filed: August 1, 2014
    Date of Patent: October 11, 2016
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MATERIALS CO., LTD.
    Inventors: Katsuhiko Yamada, Tadao Saito
  • Patent number: 9343210
    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: Grant
    Filed: January 15, 2013
    Date of Patent: May 17, 2016
    Assignee: U.T.T. UNIQUE TRANSFORMER TECHNOLOGIES LTD
    Inventors: Eliezer Adar, Yuri Bolotinsky
  • Patent number: 9041503
    Abstract: An amorphous transformer which includes an amorphous core formed of an amorphous material with a lap provided at an upper portion and allowed to stand in substantially a vertical direction while being supported at a core support member, and a coil which is fitted with the amorphous core. The core support member is formed by integrating a core support member for supporting a side surface of the amorphous core and a corner support member for supporting a corner portion of the core. The core support member is provided in substantially a vertical direction along at least one of the side surfaces of the core.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: May 26, 2015
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Ryosuke Mikoshiba, Hiroyuki Endo, Kenji Nakanoue, Toshiaki Takahashi, Tooru Honma
  • Patent number: 9041501
    Abstract: The disclosure relates to an amorphous transformer core including at least one transformer core disc with a plurality of layers of strip-like amorphous core material arranged concentrically around at least one winding window. At least one heat dissipating plate extends into an interior of the amorphous transformer core and is fed from there into at least one heat exchange region outside the amorphous transformer core. This can enhance dissipation of heat energy which is produced inside the amorphous transformer core.
    Type: Grant
    Filed: December 5, 2011
    Date of Patent: May 26, 2015
    Assignee: ABB TECHNOLOGY AG
    Inventors: Martin Carlen, Marcos Bockholt, Benjamin Weber
  • Publication number: 20150084732
    Abstract: There is disclosed a transformer, comprising a triangular wound core; a low voltage LV winding; and at least one high voltage HV foil disc winding and a method for manufacturing a transformer coil, comprising providing a high voltage HV inner mold assembly; and winding at least one HV foil disc winding on the HV inner mold assembly. There is also disclosed a mold for manufacturing a transformer coil, comprising side gears respectively arranged at top and bottom positions of a triangular wound core; a high voltage HV inner mold assembly connected to the side gears; and a HV outer mold assembly connected to the side gears, wherein the HV outer mold assembly has a top opening across a length thereof.
    Type: Application
    Filed: May 3, 2012
    Publication date: March 26, 2015
    Inventors: Jong-Yun Lim, Seung-Chul Lee, Gun-Woo Nam, Chang-Hyeon Lee, Stephane Schaal, Martin Carlen, Samuel Outten
  • Patent number: 8974609
    Abstract: A ferromagnetic amorphous alloy ribbon includes an alloy having a composition represented by FeaSibBcCd where 80.5?a?83 at. %, 0.5?b?6 at. %, 12?c?16.5 at. %, 0.01?d?1 at. % with a+b+c+d=100 and incidental impurities, the defect length along a direction of the ribbon's length being between 5 mm and 200 mm, the defect depth being less than 0.4×t ?m and the defect occurrence frequency being less than 0.05×w times within 1.5 m of ribbon length, where t and w are ribbon thickness and ribbon width, respectively, and the ribbon in its annealed state and straight strip form of the ribbon, has a saturation magnetic induction exceeding 1.60 T, and exhibits a magnetic core loss of less than 0.14 W/kg when measured at 60 Hz and at 1.3 T induction level. The ribbon is suitable for use in transformer cores, rotational machines, electrical chokes, magnetic sensors and pulse power devices.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: March 10, 2015
    Assignees: Metglas, Inc., Hitachi Metals, Ltd.
    Inventors: Yuichi Ogawa, Eric A. Theisen, Yuji Matsumoto, James Perrozi, Ryusuke Hasegawa
  • Patent number: 8968490
    Abstract: A ferromagnetic amorphous alloy ribbon includes an alloy having a composition represented by FeaSibBcCd where 80.5?a?83 at. %, 0.5?b?6 at. %, 12?c?16.5 at. %, 0.01?d?1 at. % with a+b+c+d=100 and incidental impurities, the ribbon being cast from a molten state of the alloy with a molten alloy surface tension of greater than or equal to 1.1 N/m on a chill body surface; the ribbon having a ribbon length, a ribbon thickness, and a ribbon surface facing the chill body surface; the ribbon having ribbon surface protrusions being formed on the ribbon surface facing the chill body surface; the ribbon surface protrusions being measured in terms of a protrusion height and a number of protrusions; the protrusion height exceeding 3 ?m and less than four times the ribbon thickness, and the number of protrusions being less than 10 within 1.5 m of the cast ribbon length; and the alloy ribbon in its annealed straight strip form having a saturation magnetic induction exceeding 1.
    Type: Grant
    Filed: September 9, 2010
    Date of Patent: March 3, 2015
    Assignees: Metglas, Inc., Hitachi Metals, Ltd.
    Inventors: Eric A. Theisen, James Perrozi, Yuichi Ogawa, Yuji Matsumoto, Daichi Azuma, Ryusuke Hasegawa
  • Patent number: 8968489
    Abstract: A ferromagnetic amorphous alloy ribbon, a method of fabricating a ribbon and a wound transformer core are provided. The ribbon includes an alloy of FeaSibBcCd where 80.5?a?83 at. %, 0.5?b?6 at. %, 12?c?16.5 at. %, 0.01?d?1 at. % with a+b+c+d=100, and is cast from a molten state of the alloy, having a-surface tension of greater than or equal to 1.1 N/mi,. A defect length along a direction of the ribbon's length is between 5 mm and 200 mm, a defect depth less than 0.4 ×t ?m and a defect occurrence frequency less than 0.05 ×w times within 1.5 m of ribbon length, where t is the ribbon thickness and w is the ribbon width in mm. The ribbon has a saturation magnetic induction exceeding 1.60 T and a magnetic core loss of less than 0.14 W/kg when measured at 60 Hz and at 1.3 T induction level in an annealed straight strip form, and a core magnetic loss of less than 0.3 W/kg and an exciting power of less than 0.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: March 3, 2015
    Assignees: Metglas, Inc., Hitachi Metals, Ltd.
    Inventors: Daichi Azuma, Ryusuke Hasegawa, Yuichi Ogawa, Eric A. Theisen, Yuji Matsumoto
  • Patent number: 8963677
    Abstract: An oil immersed stereo wound-core amorphous alloy transformer, comprising an iron core, a high-low voltage winding, leads and a tank. The core comprises three single frames made of amorphous alloy strips by winding and are identical in structure, and the single frames have a rectangular shape; the vertical sides of every two adjacent frames fit together fixedly to form a core pillar, and the horizontal sides of the single frame form iron yokes; the cross sections of the core pillars have an approximately circular or polygonal shape; the transformer further comprises a clamp, comprising a quasi-triangular upper and lower clamp, and posts, the lower clamp is provide with three food pads; the iron yokes in the lower portion of the iron core are located on the foot pads, and the high-low voltage winding is wound on the core pillars.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: February 24, 2015
    Assignee: Haihong Electric Co., Ltd.
    Inventors: Kaixuan Xu, Xianqing Guo
  • Patent number: 8957754
    Abstract: A wound transformer core is provided with at least one core loop made of a magnetic material. The transformer core includes multiple thin amorphous band-like iron sheets which are concentrically stacked around at least one center axis. A lower yoke section, an upper yoke section, and at least two limb sections are formed. The transformer core includes a modular plate-like support structure which is affixed upright to the center axis on both face sides of the lower yoke section and on both face sides of each limb section such that neighbored iron sheets are affixed together at their outer edge. The modular plate-like support structure includes, for each face side of the corresponding core sections, at least two plate-like modules, which are each connected to each other by a first or second plug-in connection.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: February 17, 2015
    Assignee: ABB Technology AG
    Inventors: Daniel Schäfer, Seung-Chul Lee, Jong-Yun Lim, Jens Tepper, Burak Esenlik, Benjamin Weber, Jasmin Smajic, Bernhard Petermeier
  • Patent number: 8947186
    Abstract: Described herein are improved configurations for a wireless power transfer. Described are methods and designs to reduce and manage heating and heat dissipation in resonator structures. Configuration and orientation of magnetic material as well as heat sinking material with respect to the dipole moment of the resonator is used to reduce and control thermal properties of the resonator structure and reduce the effects of heating on the performance of wireless power transfer.
    Type: Grant
    Filed: February 7, 2011
    Date of Patent: February 3, 2015
    Assignee: WiTricity Corporation
    Inventors: Andre B. Kurs, Morris P. Kesler, Katherine L. Hall, Ron Fiorello, Matthew J. MacDonald
  • Patent number: 8896407
    Abstract: An inductor comprises a magnetic core and a coil. The magnetic core has a wound portion around which the coil is wound, and a peripheral portion. The magnetic core is formed from two or more preliminarily-formed-bodies which are pressure-molded in a state where the coil winds one or more preliminarily-formed-bodies which form the wound portion. The preliminarily-formed-bodies include at least one preliminarily-formed-body which forms the peripheral portion while not form the wound portion. Each of the preliminarily-formed-bodies is made of a mixture of flat magnetic powders and an organic binder so as to have a plate-like shape. The flat magnetic powders are oriented so as to be parallel to the preliminarily-formed-body.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: November 25, 2014
    Assignee: NEC TOKIN Corporation
    Inventors: Kenichi Chatani, Naoharu Yamamoto
  • Patent number: 8786390
    Abstract: A transformer of dry design is disclosed having a core composed of amorphous material, which is sensitive to mechanical loads, having at least one winding former which surrounds the core and is in each case formed from at least one primary winding and secondary winding, and having at least one holding apparatus. A method for transformer production is also disclosed, wherein the holding apparatus is used to fix the at least one primary winding and secondary winding in each case and for this purpose it acts on each of the end faces of the at least one winding former.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: July 22, 2014
    Assignee: ABB Technology AG
    Inventors: Michael Luckey, Wolfgang Mönig, Benjamin Weber, Karel Bilek, Martin Carlen, Jong-Yun Lim
  • Patent number: 8754639
    Abstract: A method of testing a transformer prior to installation in a high-pressure environment wherein the transformer comprises a transformer core comprising a stack of a plurality laminations, is provided. The method comprises applying a mechanical compression force to the stack, the force being at least equivalent to the ambient pressure of the high-pressure environment; and testing the electrical efficiency of the transformer.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: June 17, 2014
    Assignee: Vetco Gray Controls Limited
    Inventors: Silviu Puchianu, Steven Lewis Simpson, Graham Thomas Morley
  • Patent number: 8745850
    Abstract: An apparatus and method for manufacturing a superconducting low-pass filter for quantum computing devices. The apparatus includes a plurality of containers and input and output ports connected to opposite ends of the apparatus. A plurality of coils of superconducting wire are wound using a mandrel. An adhesive is applied to the coils for maintaining a wound state. Each of the coils are positioned in each of the containers and electrically connected to each other with at least one coil being connected to the input port and at least one coil being connected to the output port. The coils are released or expanded from their wound state using an adhesive solvent. The containers are then filled with a conductive polymer and the containers are closed with one or more covers.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: June 10, 2014
    Assignee: International Business Machines Corporation
    Inventors: Matthew J. Farinelli, George A. Keefe, Frank Milliken, Jr., James R. Rozen
  • Publication number: 20140049351
    Abstract: A high leakage inductance transformer core device, and method of forming same, that has a core made of tape wound material, at least one set of concentric primary and secondary windings, and at least one flux shunt between the primary and secondary windings which is also made of tape wound material. The transformer core and flux shunts are arranged so that the transformer has a low external magnetic field, and substantially no excess core losses due to principal core flux flowing from one part of the core structure to another through the broad surface of the core tape.
    Type: Application
    Filed: August 15, 2012
    Publication date: February 20, 2014
    Inventor: Bruce W. Carsten
  • Publication number: 20130314196
    Abstract: A wounded core Scott transformer configured so that opposed core legs of wounded cores corresponding to core legs mounted in a main coil and a teaser coil are arranged on the inside between the respective coils so as to be supported.
    Type: Application
    Filed: February 21, 2013
    Publication date: November 28, 2013
    Applicant: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
    Inventors: Tatsuhito AZEGAMI, Masaki TAKEUCHI, Kohei SATO, Atsushi SUZUKI, Yoshimitsu ITO, Hisashi KOYAMA
  • Patent number: 8576037
    Abstract: A dual output autotransformer is realized by employing a novel topology in which three transformers are wound on a single, high permeability, ferrite, binocular core. The three transformers are (1) an autotransformer; (2) a coupled winding to the autotransformer; and, (3) a transmission line transformer. Within the topology employed, the outputs of the coupled line transformer and the transmission line transformer provide the balanced output (secondary) and the input to the autotransformer forms the unbalanced primary. Such an approach results in a wideband response of from 30 MHz to 3000 MHz or greater with the requisite amplitude and phase balance.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: November 5, 2013
    Assignee: Scientific Components Corporation
    Inventor: Daxiong Ji
  • 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: 20130076475
    Abstract: A simple forming method capable of reducing an eddy current loss in a magnetic core formed by winding a foil body is provided. A magnetic core formed by folding a foil strip in the longitudinal direction thereof, winding and laminating the folded strip starting from one folded end after folding into a cylindrical body, and exciting the cylindrical body in the lateral direction of the foil strip for use.
    Type: Application
    Filed: August 20, 2012
    Publication date: March 28, 2013
    Inventor: Takao IMAGAWA
  • Publication number: 20130063237
    Abstract: A core member (2) of the disclosed reactor (Da) comprises a magnetic wire material and is arranged outside a plurality of coils (1). As the core member (2) in the reactor (Da) having this structure is a wire material and is arranged outside the plurality of coils (1), the core member (2) can be formed by the winding of the wire material, simplifying manufacturing.
    Type: Application
    Filed: May 12, 2011
    Publication date: March 14, 2013
    Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
    Inventors: Tsutomu Morimoto, Kenichi Inoue, Koji Inoue, Hiroshi Hashimoto
  • Publication number: 20130027162
    Abstract: A toroidal current transformer that can be used as a neutral current transformer in a single or three phase system as a result of its compactness is described. The core is made of ferromagnetic material having a primary winding and a secondary winding.
    Type: Application
    Filed: July 29, 2011
    Publication date: January 31, 2013
    Inventors: Harry James Carlino, Lloyd Allen Maloney, Martha Suryani Bucchi
  • Patent number: 8339060
    Abstract: An ignition transformer for a discharge lamp is provided having a transformer core whose material and dimensions are selected in such a manner that the Curie temperature of the material after the ignition which is achieved by means of the ignition transformer can be achieved by a voltage drop across a secondary winding of the ignition transformer.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: December 25, 2012
    Assignee: Osram AG
    Inventors: Bernhard Siessegger, Manfred Roehl
  • Publication number: 20120206231
    Abstract: A transformer wherein the upper portions of cores are supported by a first supporting member disposed on first end surfaces of the upper portions of the cores, and a second supporting member disposed on second end surfaces of the upper portions of the cores, the first and second supporting members extend in the direction perpendicular to the faces of a magnetic material, and the cores are interposed between the first upper core supporting member and the second upper core supporting member; the first and second upper core supporting members are provided with hooks, the hooks of the first supporting member extending toward the second supporting member and the hooks of the second supporting member extending toward the first supporting member; bridging members are disposed on the opposing pairs of the hooks of the first and second upper core supporting members; and the cores are supported by the bridging members.
    Type: Application
    Filed: February 9, 2012
    Publication date: August 16, 2012
    Inventors: Keisuke KUBOTA, Yoetsu SHIINA, Toshiki SHIRAHATA, Jyunnji ONO, Takaaki HASEGAWA
  • Patent number: 8217744
    Abstract: A transformer arrangement comprising a transformer having a neutral and formed as a symmetrical transformer, in particular a cage transformer and having a reactor coil connected to the neutral of the transformer is provided. The transformer can be of any type having a neutral such as a Y-n/Y-n, Z-n/Z-n, Y-n/Z-n or a Z-n/Y-n transformer. By providing a transformer having symmetrical phases connected to a reactor coil a transformer arrangement having less weight is obtained. The lower weight is obtained because in comparison to using an E core for the transformer all phases will be symmetrical so that if a ground fault occurs in one of then phases there is no need for any compensatory windings regardless of which phase suffers the ground fault.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: July 10, 2012
    Assignee: Hexaformer AB
    Inventors: Agne Fälldin, Fredrik Grivans
  • Publication number: 20120127620
    Abstract: The invention relates to a soft-magnetic metal strip for electromechanical components, wherein the soft-magnetic metal strip has a nanocrystalline or amorphous structure. The metal strip has strip thickness to roughness ratios d/Ra of 5?d/Ra?25.
    Type: Application
    Filed: November 21, 2011
    Publication date: May 24, 2012
    Applicant: Vacuumschmelze GmbH & Co, KG
    Inventor: Giselher HERZER
  • Patent number: 8156634
    Abstract: A method of assembling an electronic component in accordance with the invention comprises providing an electronic component having a body and a core and applying a film over at least a portion of the body and core so that the film secures the body and core to one another.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: April 17, 2012
    Assignee: Coilcraft, Incorporated
    Inventors: David A. Gallup, Lawrence B. LeStarge
  • Publication number: 20120068800
    Abstract: A transformer of dry design is disclosed having a core composed of amorphous material, which is sensitive to mechanical loads, having at least one winding former which surrounds the core and is in each case formed from at least one primary winding and secondary winding, and having at least one holding apparatus. A method for transformer production is also disclosed, wherein the holding apparatus is used to fix the at least one primary winding and secondary winding in each case and for this purpose it acts on each of the end faces of the at least one winding former.
    Type: Application
    Filed: September 29, 2011
    Publication date: March 22, 2012
    Applicant: ABB TECHNOLOGY AG
    Inventors: Michael Luckey, Wolfgang Mönig, Benjamin Weber, Karel Bilek, Martin Carlen, Jong-Yun Lim
  • Patent number: 8138877
    Abstract: Magnetic circuit comprising a gap bridging element made of a non-magnetic metal and a wound magnetic core comprising a plurality of stacked concentric ring layers of magnetic material having a high magnetic permeability. The magnetic core has a gap extending through a section of the stacked concentric ring layers of magnetic material, wherein the bridging element is welded to a lateral face of the wound magnetic core on either side of the gap. Welding connections between the bridging element and the magnetic core extend across the stacked concentric ring layers.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: March 20, 2012
    Assignee: Liaisons Electroniques-Mecaniques LEM SA
    Inventors: Sylvain Demolis, Pierre Mariano Benedetti, Thierry Didier Chenavard
  • Publication number: 20120062351
    Abstract: A ferromagnetic amorphous alloy ribbon includes an alloy having a composition represented by FeaSibBcCd where 80.5?a?83 at. %, 0.5?b?6 at. %, 12?c?16.5 at. %, 0.01?d?1 at. % with a+b+c+d=100 and incidental impurities, the ribbon being cast from a molten state of the alloy with a molten alloy surface tension of greater than or equal to 1.1 N/m on a chill body surface; the ribbon having a ribbon length, a ribbon thickness, and a ribbon surface facing the chill body surface; the ribbon having ribbon surface protrusions being formed on the ribbon surface facing the chill body surface; the ribbon surface protrusions being measured in terms of a protrusion height and a number of protrusions; the protrusion height exceeding 3 ?m and less than four times the ribbon thickness, and the number of protrusions being less than 10 within 1.5 m of the cast ribbon length; and the alloy ribbon in its annealed straight strip form having a saturation magnetic induction exceeding 1.
    Type: Application
    Filed: September 9, 2010
    Publication date: March 15, 2012
    Applicants: HITACHI METALS, LTD., METGLAS, INC.
    Inventors: Eric A. Theisen, James Perrozi, Yuichi Ogawa, Yuji Matsumoto, Daichi Azuma, Ryusuke Hasegawa
  • Publication number: 20120049992
    Abstract: A ferromagnetic amorphous alloy ribbon includes an alloy having a composition represented by FeaSibBcCd where 80.5?a?83 at. %, 0.5?b?6 at. %, 12?c?16.5 at. %, 0.01?d?1 at. % with a+b+c+d=100 and incidental impurities; the ribbon being cast from a molten state of the alloy, with a molten alloy surface tension of greater than or equal to 1.1 N/m; the defect length along a direction of the ribbon's length being between 5 mm and 200 mm, the defect depth being less than 0.4×t ?m and the defect occurrence frequency being less than 0.05×w times within 1.5 m of ribbon length, where t is the ribbon thickness and w is the ribbon width, and the ribbon having a saturation magnetic induction exceeding 1.60 T and exhibiting a magnetic core loss of less than 0.14 W/kg when measured at 60 Hz and at 1.3 T induction level in an annealed straight strip form, and a core magnetic loss of less than 0.3 W/kg and an exciting power of less than 0.4 VA/kg in an annealed wound transformer core form.
    Type: Application
    Filed: August 31, 2010
    Publication date: March 1, 2012
    Applicants: HITACHI METALS, LTD., METGLAS, INC.
    Inventors: Daichi Azuma, Ryusuke Hasegawa, Yuichi Ogawa, Eric A. Theisen, Yuji Matsumoto
  • Patent number: 8106738
    Abstract: Disclosed herein is a ballast for multiple lamps and a method of manufacturing the ballast. A first coil is wound around a bobbin which has a partition formed in the center portion of an inner space thereof. An insulating sheet is stacked on the first coil, and a second coil is wound around the insulating sheet. Two paired core elements are vertically coupled to each other to form each core. Ends of the core elements disposed outside the bobbin are connected, and ends of the core elements disposed inside the bobbin are spaced apart from each other by the thickness of the bobbin partition, to form a path for magnetic flux.
    Type: Grant
    Filed: November 26, 2009
    Date of Patent: January 31, 2012
    Assignee: Sang Yong Illumination Co.
    Inventor: Ho-Sub Sin
  • Publication number: 20120013430
    Abstract: A slab having a predetermined composition is heated to 1280° C. or more. The slab is hot-rolled to obtain a hot-rolled steel sheet. The hot-rolled steel sheet is annealed to obtain an annealed steel sheet. The annealed steel sheet is cold-rolled to obtain a cold-rolled steel sheet. The cold-rolled steel sheet is decarburization annealed to obtain a decarburization annealed steel sheet. The decarburization annealed steel sheet is coiled in a coil state. The coil-state decarburization annealed steel sheet is finish-annealed. The cold-rolled steel sheet is heated to a temperature of 800° C. or more at a rate of 30° C./sec or more and 100° C./sec or less during increasing temperature of the cold-rolled steel sheet in the decarburization annealing or before the decarburization annealing. The decarburization annealed steel sheet is heated at a rate of 20° C./h or less within a temperature range of 750° C. or more and 1150° C.
    Type: Application
    Filed: March 19, 2010
    Publication date: January 19, 2012
    Inventors: Nobusato Morishige, Kenichi Murakami, Hotaka Honma, Yuji Kubo, Kazumi Mizukami, Koki Tanaka, Seiki Takebayashi
  • Patent number: 8089334
    Abstract: An inductor device is described. The inductor device includes a core comprising two core sections, at least one gap defined between the two core sections, and at least one cast coil and fringe shield assembly. The at least one cast coil and fringe shield assembly includes a conductor winding and a fringe shield sealed within an insulator. The at least one cast coil and fringe shield assembly is configured to at least partially surround portions of the two core sections.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: January 3, 2012
    Assignee: General Electric Company
    Inventors: Allen Michael Ritter, Robert Gregory Wagoner, John Harold Parslow, Abdelgelil Amer
  • Patent number: 8009009
    Abstract: A coil module comprises a circular core and a winding is provided. The circular core comprises an outer circular portion and an inner circular portion. The winding is wound around the outer circular portion in a single-layer configuration and around the inner circular portion in a multi-layer configuration. The coil module comprises a first thickness after the winding is wound around the outer circular portion and comprises a second thickness after the winding is wound around the inner circular portion, wherein the first thickness is greater than or equal to the second thickness.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: August 30, 2011
    Assignee: Delta Electronics, Inc.
    Inventors: Han Zhang, Zhi Huang, Wei Chen, Johnson Li, C. S. Kung
  • Publication number: 20110205765
    Abstract: An inductance element (1) includes a doughnut-shaped magnetic core (2) and a bottomed container (3) for housing the doughnut-shaped magnetic core (2). The bottomed container (3) has a cylindrical outer wall portion, a cylindrical inner wall portion, a bottom portion, an open section and a hollow portion. The open section of the bottomed container (3) is covered with an adhesive portion (4) for integrally fixing the doughnut-shaped magnetic core (2) and the bottomed container (3). The adhesive portion (4) has an extended portion (4a) extended in the cylindrical inner wall portion. The ratio (B/A) of a length (B) of the extended portion (4a) to a height (A) of the cylindrical inner wall portion is in a range of 0.1 to 0.5.
    Type: Application
    Filed: May 20, 2008
    Publication date: August 25, 2011
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Materials Co., Ltd.
    Inventors: Tadao Saito, Kazumi Sakai, Katsuhiko Yamada
  • Patent number: 7990246
    Abstract: A pulse transformer arrangement (100) is built from an uncut pulse transformer core (110) and at least one foil winding (120-A, 120-B) (each) comprising multiple insulated conducting strips arranged around the core and ending in foil winding terminals to form multiple independent primary windings. This new design principle has several advantages. Making the winding(s) of foil eliminates the need to cut the core, because of the ease of insertion of the foil winding(s) onto the core. The work to set up a plurality of primary windings is significantly reduced. In addition to the elimination of the costs for cutting the core, this also brings the further advantages of reduced DC reset current, reduced risk for electrical shorts and avoidance of excessive losses due to potential high frequency AC resistance problems.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: August 2, 2011
    Assignee: Scandinova Systems AB
    Inventors: Mikael Rolf Lindholm, Bengt Anderberg
  • Patent number: 7973634
    Abstract: Disclosed is an electronic component, especially a coil with a coil core, in which the turns of the coil winding are spaced apart from each other at least at one point in the longitudinal direction of the coil. A plastic retaining element which overlaps both the coil core and at least the two adjacent turns of the coil winding in a longitudinal direction is sprayed on in the area of said point, whereby a connection between the coil core and the coil winding is created at the same time. The retaining element can be sprayed around a closed circumference of the coil while covering only a portion of the coil in the longitudinal direction thereof. Preferably, the retaining element is placed approximately in the center relative to the longitudinal extension of the coil.
    Type: Grant
    Filed: May 5, 2006
    Date of Patent: July 5, 2011
    Assignee: Wuerth Elektronik Ibe GmbH
    Inventor: Rupert Aumueller
  • Publication number: 20110109412
    Abstract: In a three phase wound transformer core three frames are connected in triangular fashion, each frame being made of multiple rings wound in off-set fashion on a common axis.
    Type: Application
    Filed: October 29, 2010
    Publication date: May 12, 2011
    Inventor: Jurgen Klaus Vollrath
  • Patent number: 7911312
    Abstract: A magnetic pole for magnetic levitation vehicles is described which pole comprises a core (1) and a winding (16) applied on it in form of a disc which is formed by a conductor strip (17) wound in several layers (10a) . . . 10k) around said core (1). According to the present invention, the conductor strip (17) is properly tailor-cut at its longitudinal rims (17a, 17b) so that its width increases from said core (1) towards the outside until it reaches a maximum value (b2).
    Type: Grant
    Filed: February 5, 2005
    Date of Patent: March 22, 2011
    Assignee: ThyssenKrupp Transrapid GmbH
    Inventors: Wolfgang Hahn, Qinghua Zheng, Luitpold Miller
  • Publication number: 20100265027
    Abstract: Magnetic circuit comprising a gap bridging element made of a non-magnetic metal and a wound magnetic core comprising a plurality of stacked concentric ring layers of magnetic material having a high magnetic permeability. The magnetic core has a gap extending through a section of the stacked concentric ring layers of magnetic material, wherein the bridging element is welded to a lateral face of the wound magnetic core on either side of the gap. Welding connections between the bridging element and the magnetic core extend across the stacked concentric ring layers.
    Type: Application
    Filed: February 23, 2010
    Publication date: October 21, 2010
    Applicant: Liaisons Electroniques-Mecaniques LEM S.A.
    Inventors: Sylvain Demolis, Pierre Mariano Benedetti, Thierry Didier Chenavard
  • Patent number: 7788794
    Abstract: A transformer and a method of manufacturing the same are provided. The transformer includes a coil assembly mounted to a leg of a core. The coil assembly includes a low voltage coil and an insulation spool disposed over the low voltage coil. The insulation spool is composed of an insulating material and includes a plurality of guide strips defining a plurality of series of aligned notches. A high voltage coil is mounted to the insulation spool and includes a plurality of disc windings disposed in the series of aligned notches, respectively. Each of the disc windings comprises alternating concentric conductor layers and insulating layers. The conductor layers each have a width to thickness ratio of greater than 20:1.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: September 7, 2010
    Assignee: ABB Technology AG
    Inventors: Charlie H. Sarver, William E. Pauley, Jr., Rush B. Horton, Jr.
  • Patent number: 7710046
    Abstract: Provided is an inverter for driving a backlight such as LCD, wherein the inverter includes a driving circuit for driving at least two of a plurality of lamps; a transformer for connecting the driving circuit to the plurality of lamps; and a balance coil connected to at least two of the plurality of lamps for balancing the current flowing through the at least two of the plurality of lamps, and the balance coil further includes a bobbin having a winding part divided into at least three parts; a core disposed in the bobbin; and first and second coils disposed on the divided winding parts.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: May 4, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Cheol-jin Park, Ryuichi Kimura, Jin-Gyu Moon
  • Publication number: 20100066476
    Abstract: Magnetic flux in a magnetic flux distribution inside a wound iron core for a stationary apparatus is mal-distributed toward the inner periphery side where the magnetic path of a laminated magnetic steel sheet is short with respect to the total lamination thickness and magnetic resistance is small and the inner periphery side on which magnetic flux is concentrated has a high magnetic flux density and increased iron loss, and therefore magnetic steel sheets of different magnetic characteristics are disposed at an arbitrary lamination ratio to make uniform the magnetic flux distribution inside the same wound iron core.
    Type: Application
    Filed: November 25, 2009
    Publication date: March 18, 2010
    Inventors: Hiroyuki Endou, Makoto Shinohara, Masanao Kuwabara, Yoichi Amako, Toshiki Shirahata
  • Publication number: 20090295529
    Abstract: Core structures that may be used in transformers to improve the number of turns-ratios available. The core structures may include at least three outer legs and a center leg. In operation windings of the transformer may be wrapped around the center leg (e.g., using a bobbin) a fractional number of times, such that the turns-ratio of the transformer may be more finely selected without increasing the number of turns required. Additionally, the outer legs may have different cross-sectional areas, such that even more fractional turns-ratios are available.
    Type: Application
    Filed: May 28, 2009
    Publication date: December 3, 2009
    Inventor: Arturo Silva
  • Publication number: 20090278647
    Abstract: Toroidal inductive devices are manufactured with high efficiency through the use of bobbin winding techniques or wound magnetic pattern members.
    Type: Application
    Filed: January 18, 2007
    Publication date: November 12, 2009
    Inventor: Harrie R. Buswell
  • Publication number: 20090230869
    Abstract: To provide a transformer in which costs of a backlight device are reduced by lighting a lamp without requiring an additional member for connecting the lamp to an inverter. A transformer according to the present invention includes terminal bases and in which terminal pins are implanted, a bobbin formed by winding a primary winding and secondary windings and around the outer circumference of a winding core, and a core. A lamp connecting terminal is arranged to the terminal bases and, and an electrode of a lamp is directly connected to the lamp connecting terminal, thereby attaching the lamp to the terminal bases and. The transformer is integrated into an inverter for a backlight device of a liquid crystal display apparatus, thereby lighting the lamp without using an additional member for connecting the lamp to the inverter.
    Type: Application
    Filed: June 20, 2006
    Publication date: September 17, 2009
    Applicant: MINEBEA CO., LTD.
    Inventors: Shinichi Suzuki, Mitsuaki Suzuki
  • Patent number: 7523538
    Abstract: Method for mounting a gradient coil in a cylindrical magnet of a magnetic resonance system and associated magnetic resonance system, wherein the exterior of the gradient coil is foam-bonded flat against the inner wall of the magnet at least in sections, at least one element being foamed in place during mounting, thus creating at least one continuous channel, said channel being used for the insertion of a cutting and/or separating tool for ripping open the foam bond between the gradient coil and the cylindrical magnet.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: April 28, 2009
    Assignee: Siemens Aktiengesellschaft
    Inventors: Johann Schuster, Stefan Stocker
  • Publication number: 20090009279
    Abstract: A high-voltage generating transformer for a discharge lamp lighting apparatus according to the present invention includes a rodlike core; a secondary winding bobbin that is divided into a plurality of sections, and where the core is disposed in the central portion thereof; a secondary winding part wound on the secondary winding bobbin, divided between the plurality of sections of the bobbin; a primary winding bobbin disposed around the outer periphery of the secondary winding part; and a primary winding part wound on the primary winding bobbin; wherein the primary winding bobbin is changed in thickness every section or every plurality of sections of the second winding part such that the bobbin has a thickened thickness on the side where the potential difference between the primary winding part and the secondary winding part is high, and the bobbin has a thinned thickness on the side where the potential difference is low.
    Type: Application
    Filed: November 21, 2006
    Publication date: January 8, 2009
    Inventors: Yusuke Umeda, Keiko Konishi, Takashi Ohsawa