Core Structure Patents (Class 335/297)
  • Patent number: 11183321
    Abstract: The present invention relates to a powder magnetic core with silica-based insulating film having a structure in which a plurality of Fe-based soft magnetic powder particles having surfaces coated with a silica-based insulating film are joined with each other through a grain boundary layer made of the silica-based insulating film. Fe diffused from the Fe-based soft magnetic powder particles is contained in the grain boundary layer and the grain boundary layer contains an oxide of each of Fe and Si or a composite oxide of Fe and Si.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: November 23, 2021
    Assignee: Diamet Corporation
    Inventors: Hiroaki Ikeda, Kazunori Igarashi
  • Patent number: 11175364
    Abstract: According to some aspects, a laminate panel is provided. The laminate panel comprises at least one laminate layer including at least one non-conductive layer and at least one conductive layer patterned to form at least a portion of a B0 coil configured to contribute to a B0 field suitable for use in low-field magnetic resonance imaging (MRI).
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: November 16, 2021
    Assignee: Hyperfine, Inc.
    Inventors: Jonathan M. Rothberg, Matthew Scot Rosen, Gregory L. Charvat, William J. Mileski, Todd Rearick, Michael Stephen Poole, Keith G. Fife
  • Patent number: 11170920
    Abstract: A Fe-based nanocrystalline alloy powder having an alloy composition represented by the following Composition Formula (1) and having an alloy structure including nanocrystal particles: Fe100-a-b-c-d-e-f-gCuaSibBcModCreCfNbg ??Composition Formula (1), in which 100-a-b-c-d-e-f-g, a, b, c, d, e, f, and g each represent a percent (%) by atom of a relevant element, and a, b, c, d, e, f, and g satisfy 0.10?a?1.10, 13.00?b?16.00, 7.00?c?12.00, 0.50?d?5.00, 0.001?e?1.50, 0.05?f?0.40, and 0?(g/(d+g))?0.50, in Composition Formula (1).
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: November 9, 2021
    Assignee: HITACHI METALS, LTD.
    Inventors: Motoki Ohta, Nobuhiko Chiwata
  • Patent number: 11028468
    Abstract: A component for an electronic device can include a metal alloy formed by a metal injection molding process. The metal alloy can have a composition of about 32 wt % to about 38 wt % cobalt and about 62 wt % to about 68 wt % iron.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: June 8, 2021
    Assignee: APPLE INC.
    Inventors: John C. DiFonzo, Abhijeet Misra, Charles J. Kuehmann, Daniel T. McDonald
  • Patent number: 10941867
    Abstract: A high conductance valve for use in fluid delivery systems is comprised of a flat non-circular orifice ridge adjacent to which a control plate having a planar control surface is proximally positioned to adjust the valve effective opening area and thereby the conductance of the valve. The length of the non-circular orifice ridge periphery is substantially greater than the circumference of a similarly sized circular orifice and therefore the realized effective opening area is also substantially greater despite having a similar footprint.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: March 9, 2021
    Assignee: HORIBA STEC, Co., Ltd.
    Inventor: Kim Ngoc Vu
  • Patent number: 10672543
    Abstract: A ferrite powder for bonded magnets capable of producing a ferrite bonded magnet having high BHmax, and excellent in fluidity when converted to a compound, and having a high p-iHc value, and a method for producing the same, and a ferrite bonded magnet using the ferrite powder for bonded magnets, wherein an average particle size of particles obtained by a dry laser diffraction measurement is 5 ?m or less; a specific surface area is 1.90 m2/g or more and less than 2.80 m2/g; a compression density is 3.50 g/cm3 or more and less than 3.78 g/cm3, and a compressed molding has a coercive force of 2300 Oe or more and less than 2800 Oe.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: June 2, 2020
    Assignees: DOW A ELECTRONICS MATERIALS CO., LTD., DOW A F-TEC CO., LTD.
    Inventors: Satoru Tsuboi, Yasunobu Mishima, Keisuke Ayabe, Masayasu Senda
  • Patent number: 10230256
    Abstract: A wireless charging accessory apparatus is provided. The wireless charging accessory apparatus may be electrically connected to a mobile device and can wirelessly charge a wearable device placed thereon. The wireless charging accessory apparatus may draw power from the mobile device to wirelessly charge the wearable device placed thereon.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: March 12, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Junwhon Uhm
  • Patent number: 9806540
    Abstract: A receiving device for receiving a magnetic field and producing electric energy by magnetic induction. The receiving device includes at least one coil of an electric line. The magnetic field induces an electric voltage in the coil during operation. The coil has an inductance. The receiving device and the coil are adapted to receive the magnetic field from a receiving side. The receiving device includes a case enclosing the at least one coil and further components of the receiving device. The receiving device includes at least one capacitor. The capacitor is electrically connected to the coil or to at least one of the coils so as to form an electric circuit having a resonance frequency according to the inductance(s) of the coil(s) and to the capacitance(s) of the capacitor(s).
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: October 31, 2017
    Assignee: Bombardier Transportation GmbH
    Inventors: Dominik Anders, Simon Wechsler
  • Patent number: 9799445
    Abstract: A wireless power receiver for receiving power from a wireless power transmitter using resonance according to the embodiment includes a reception resonant coil resonance-coupled with a transmission resonant coil of the wireless power transmitter for receiving the power, a reception induction coil coupled with the reception resonant coil for receiving the power, and a connecting unit, and the reception resonant coil includes at least one conductive line having one end and an opposite end being open with each other, and the connecting unit couples the one end and the opposite end of each conductive line with each other so that the reception resonant coil forms a closed loop.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: October 24, 2017
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Jung Oh Lee
  • Patent number: 9754750
    Abstract: A magnetic latching relay of a parallel type magnetic circuit, forming two parallel permanent magnetic circuits on the permanent magnetic circuit of a relay; one of the permanent magnetic circuits is used to provide adequate attraction to an armature, so that permanent magnetic attraction can achieve a balance of applied forces with the counter-force provided by a movable spring, so as to realize relay bistability or state transition more stably.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: September 5, 2017
    Assignee: Xiamen Hongfa Electroacoustic Co., Ltd.
    Inventors: Wenzhi Cai, Zhonghua Tan, Hongjiang Cao, Jinqiang Liu
  • Patent number: 9627937
    Abstract: A stator for an electric motor includes a plurality of pole pieces and a plurality of electrical windings associated with the pole pieces. Each winding includes a cable having an electrically conductive element. A lossy insulative material is located between the electrical windings and the associated pole pieces.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: April 18, 2017
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Mark A. Wisnewski, David J. Trzcinski, William T. Ivan, Yue Fan
  • Patent number: 9341690
    Abstract: There are disclosed pole piece designs. In embodiments a pole piece comprises a rear face, the rear face comprising at least one channel. In embodiments the pole piece comprises at least one hole for accepting a cooperating shimming rod. There are also disclosed magnet arrays and magnetic resonance apparatuses comprising the pole pieces as well as uses of the pole pieces with magnet arrays according to embodiments.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: May 17, 2016
    Assignee: NANALYSIS CORP.
    Inventors: Garett M. Leskowitz, Gregory McFeetors
  • Patent number: 9304175
    Abstract: In order to further develop a magnetoresistive sensor device (100; 100?; 100?) comprising at least one substrate or wafer (10), in particular at least one silicon wafer, and at least one sensing element (30), in particular at least one A[nisotropic]M[agneto]R[esistive] sensing element and/or—at least one G[iant]M[agneto]R[esistive] sensing element, for example at least one multilayer G[iant]M[agneto]R[esistive] sensing element, said sensing element (30) being arranged on and/or under the substrate or wafer (10), as well as a corresponding method of fabricating such magnetoresistive sensor device (100; 100?; 100?) in such way that an external or extra bias magnetic field to preset the sensing element (10) and/or the magnetoresistive sensor device (100; 100?; 100?) can be dispensed with, it is proposed to arrange at least one magnetic layer (20t, 20b) on (20t) and/or under (20b) the substrate or wafer (10) and at least partially on (20t) and/or under (20b) the sensing element (30), said magnetic layer (20t, 20b
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: April 5, 2016
    Assignee: NXP B.V.
    Inventors: Arne Kraemer, Reinhard Buchhold
  • Publication number: 20150141736
    Abstract: An apparatus for generating a pulsed magnetic field includes an insulating body, an electrical conductor positioned on the insulating body, and a ferromagnetic body having a hollow portion, wherein the insulating body and the electrical conductor are positioned in the hollow portion. In some embodiments of the present disclosure, the electrical conductor has at least one gap separating the electrical conductor into at least two parts, thereby allowing a current to flow through the at least two parts in parallel to generate a magnetic field in the insulating body.
    Type: Application
    Filed: November 18, 2013
    Publication date: May 21, 2015
    Applicant: NATIONAL SYNCHROTRON RADIATION RESEARCH CENTER
    Inventors: Kuang Lung TSAI, Chyi Shyan FANN, San Yuang HSU, Ke Kang LIN
  • Publication number: 20150130573
    Abstract: An eddy current loss at a frequency of 3,000 Hz is set to less than 150 W/kg by setting a single particle diameter-equivalent diameter dS of soft magnetic metal powder represented by the following formula to 210 ?m or less. In the formula, dS represents a single particle diameter-equivalent diameter of the soft magnetic metal powder [m], dMN represents a number average particle diameter of the soft magnetic metal powder [m], and ? represents a standard deviation of the particle diameter of the soft magnetic metal powder [m].
    Type: Application
    Filed: April 25, 2013
    Publication date: May 14, 2015
    Applicant: NTN CORPORATION
    Inventors: Hikaru Araki, Norikazu Muneda, Eiichirou Shimazu
  • Publication number: 20150123761
    Abstract: A rod-shaped magnetic core element, having a first end with a spherical or cylindrical recess or a spherical or cylindrical connecting protrusion, and a second end with a spherical or cylindrical recess or a spherical or cylindrical connecting protrusion so that a bent connection of at least two magnetic core elements is variably adjustable. Magnetic core elements comprising spherical or cylindrical magnetic core ends of this type allow a nearly gap-free construction with little magnetic leakage due to slightly larger end surfaces in comparison with ferrite rods having beveled plane end section surfaces. The enlarged end surface of the spherical surface advantageously allows a more stable connection of individual magnetic core elements without adhesive bonding. This allows the construction of flexible, multiple-member and inexpensive rod core coils and antennae.
    Type: Application
    Filed: November 3, 2014
    Publication date: May 7, 2015
    Inventor: Johann WINKLER
  • Publication number: 20150123490
    Abstract: An electromagnetic connector is disclosed that is configured to form a first magnetic circuit portion comprising a first core member and a first coil disposed of the first core member. The electromagnetic connector is configured to mate with a second electromagnetic connector, where the second electromagnetic connector is configured to form a second magnetic circuit portion comprising a second core member and a second coil disposed of the second core member. The first core member and the second core member are configured to couple the first coil to the second coil with a magnetic circuit formed from the first magnetic circuit portion and the second magnetic circuit portion when the electromagnetic connector is mated with the second electromagnetic connector. The magnetic circuit is configured to induce a signal in the first coil when the second coil is energized.
    Type: Application
    Filed: January 15, 2015
    Publication date: May 7, 2015
    Inventors: Albert Rooyakkers, James G. Calvin
  • Publication number: 20150107992
    Abstract: A sputtering apparatus comprises: a target holder; and a magnet unit of a rectangular shape having long and short sides. the magnet unit includes: a first magnet; a second magnet disposed surrounding the first magnet and magnetized in a different and opposite direction from a direction of magnetization of the first magnet, and a third magnet located at part between the first magnet and the second magnet in the short-side direction and at least at a center position between the first magnet and the second magnet, the third magnet being magnetized in the short-side direction. In the third magnet, a surface facing the second magnet has the same polarity as that of a surface of the second magnet on the target holder side, and a surface facing the first magnet has the same polarity as that of a surface of the first magnet on the target holder side.
    Type: Application
    Filed: December 22, 2014
    Publication date: April 23, 2015
    Inventor: Hidekazu SUZUKI
  • Publication number: 20150104664
    Abstract: In a magnetic component, such as an inductor and an antenna, produced with a metal magnetic powder, a complex number component of magnetic permeability that is a loss in the GHz band was high. A magnetic component obtained by molding a soft magnetic metal powder can have a reduced loss factor in the GHz band. The soft magnetic metal powder is characterized by containing iron as a main ingredient, and having an average particle size of not larger than 300 nm, a coercive force (Hc) of 16 to 119 kA/m (200 to 1500 Oe), a saturation magnetization of not less than 90 Am2/kg, and a volume resistivity of not less than 1.0×101 ?·cm. The volume resistivity is determined by measuring, by a four probe method, a molded body formed by vertically pressurizing 1.0 g of the metal powder at 64 MPa (20 kN).
    Type: Application
    Filed: March 13, 2013
    Publication date: April 16, 2015
    Inventors: Kazumasa Ikari, Masahiro Gotoh, Takayuki Yoshida
  • Publication number: 20150091557
    Abstract: A hall effect current sensor including a mounting bracket, a sensor assembly, and a sensor core. The sensor assembly includes a flux sensor. The sensor core includes a first portion and a second portion. The first portion and the second portion define a first air gap and a second air gap between the first portion and the second portion. The first air gap is adapted to receive the sensor assembly.
    Type: Application
    Filed: October 2, 2013
    Publication date: April 2, 2015
    Inventors: Robert G Rushmer, Jeffrey Annis, Richard D. Marasch, Greg Voborsky
  • Patent number: 8988177
    Abstract: Magnetic cores are described that include a first magnetic material with a first magnetic permeability, forming at least part of a body of the magnetic core, and a second magnetic material that has a second magnetic permeability positioned in a corner region of the body of the magnetic core. The second magnetic material is disposed within the body such that a plurality of magnetic flux paths of different overall lengths traverses the corner region. The plurality of potential magnetic flux paths have a corresponding plurality of effective magnetic reluctances, with different paths of the plurality of magnetic flux paths having different associated first lengths of a first plurality of lengths and different associated second lengths of a second plurality of lengths such that the corresponding plurality of magnetic reluctances of the plurality of magnetic flux paths are substantially equivalent through the different overall lengths.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: March 24, 2015
    Assignee: Marvell International Ltd.
    Inventors: George Shengshi Dai, Jesus Paz, Hongyan Li
  • Patent number: 8985550
    Abstract: An electromagnetic valve includes a valve seat, a valving element, and a solenoid part. The valve seat has an annular shape and defines a valve hole. The solenoid part includes a coil, a core guide part, a fixed core, and a movable core. The coil becomes an electromagnet upon energization thereof. The core guide part is arranged radially inward of the coil. The movable core is accommodated and reciprocated inside the core guide part in accordance with whether the electromagnet is turned on or off. The valving element moves integrally with the movable core to open or close the valve hole. The core guide part includes a magnetic unbalance part where magnetic force applied between the core guide part and the movable core is different between on one side and the other side of the core guide part in its radial direction.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: March 24, 2015
    Assignee: Denso Corporation
    Inventor: Yuichiro Miura
  • Publication number: 20150060226
    Abstract: Provided are an opposed iron core transmitting rotation motion, a manufacturing method thereof, and an electromagnetic fan clutch formed by the opposed iron core. The opposed iron core includes iron core grooves (12; 13) axially arranged in a back-to-back manner on an electromagnetic iron core body (11). The manufacturing method of the opposed iron core includes: directly drawing the iron core body (11) to form the iron core grooves arranged in the back-to-back manner, or directly spinning the iron core body (11) to form the iron core grooves arranged in the back-to-back manner. The electromagnetic fan clutch formed by the opposed iron core has a first actuation gap (841) and a second actuation gap (842) respectively on two sides of the electromagnetic iron core body (11) of an opposed iron core apparatus.
    Type: Application
    Filed: March 30, 2012
    Publication date: March 5, 2015
    Inventor: Zhaoyu Wang
  • Publication number: 20150061801
    Abstract: In a solenoid magnet assembly, and a method for manufacture thereof, the magnet assembly includes a number of concentrically aligned coils, each including a winding impregnated with a resin. Each coil is mechanically restrained so as to hold the coils in fixed relative positions relative to each other when forming the magnet assembly. The mechanical restraint can be formed by annular support sections bonded to the respective coils, lugs bonded to the respective coils, or by lugs that are at least partially embedded in a crust formed on a radially outer surface of the respective windings.
    Type: Application
    Filed: November 5, 2014
    Publication date: March 5, 2015
    Applicant: Siemens Plc.
    Inventors: Ian Dunckley, David William Neil Edington, Edward Wedderburn Kershaw, Matthew John Longfield, Peter Neil Morgan
  • Patent number: 8963667
    Abstract: Packet of plates provided with fixing means, characterized in that at least some of the plates have a cut-out to form a housing receiving an insert provided with fixing means and having a fixing axis, the housing having at least one wall cooperating with an exterior surface of the insert to retain the insert along the fixing axis. Method of manufacturing such a packet.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: February 24, 2015
    Assignee: R. Bourgeois
    Inventor: Raymond Nicolas Bourgeois
  • Patent number: 8951635
    Abstract: A bonded magnet is required to have a large energy product, which is the product of magnetization Br and coercive force Hc. However, in a ferrite powder for a bonded magnet, when the particle diameter is reduced to improve the coercive force, the packing properties are impaired, and the Br is lowered. When the particle diameter is increased to improve the magnetization, the coercive force is lowered. Therefore, to increase the energy product, both the Br and Hc must be increased. A ferrite powder that has a large particle size, is composed of smooth crystals, and suffers only a small reduction in coercive force even after pressurization is obtained by mixing a fine ferrite powder having a small particle size with a ferrite powder calcined at a temperature of 1050° C. to 1300° C. in the presence of a chloride at its saturated vapor pressure and then annealing the mixture at 800° C. to 1100° C. A bonded magnet produced using the powder has an energy product of 2.0 MGOe or more.
    Type: Grant
    Filed: April 9, 2010
    Date of Patent: February 10, 2015
    Assignee: Dowa Electronics Materials Co., Ltd.
    Inventors: Shinichi Suenaga, Kouji Hirata, Satoru Tsuboi, Keisuke Ayabe, Kazuyosi Horii
  • Publication number: 20150035636
    Abstract: A resin-mold core includes right and left leg portions, and a yoke portion interconnecting those. The resin-mold core includes a magnetic core, and a mold component having the magnetic core embedded therein by molding. Openings where the magnetic core in the mold component is exposed are formed in multiple faces of the mold component that are upper, lower, front, rear, and right and left faces. Apart of the yoke portion of the resin-mold core corresponding to a location where terminals are drawn to the exterior of the core from coils attached to the outer circumferences of the leg portions of the core has no opening formed in the multiple faces of the mold component. Positioning members to coaxially align the leg portions of the opposing resin-mold core are formed in abutting faces of the leg portions of the resin-mold core.
    Type: Application
    Filed: July 31, 2014
    Publication date: February 5, 2015
    Inventors: Ryo Nakatsu, Toshikazu Ninomiya, Kensuke Maeno
  • Patent number: 8937521
    Abstract: An improved system for concentrating magnetic flux of a multi-pole magnetic structure at the surface of a ferromagnetic target uses pole pieces having a magnet-to-pole piece interface with a first area and a pole piece-to-target interface with a second area substantially smaller than the first area, where the target can be a ferromagnetic material or a complementary pole pieces. The multi-pole magnetic structure can be a coded magnetic structure or an alternating polarity structure comprising two polarity directions, or can be a hybrid structure comprising more than two polarity directions. A magnetic structure can be made up of discrete magnets or can be a printed magnetic structure.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: January 20, 2015
    Assignee: Correlated Magnetics Research, LLC.
    Inventors: Larry W. Fullerton, Mark D. Roberts, Wesley R. Swift, Jr.
  • Publication number: 20150015354
    Abstract: Electromagnetic Halbach array device with substantially contiguous vertical and horizontal cores, comprised of a plurality of horizontal and vertical electromagnets arranged in a Halbach array sequence, where each individual core of every horizontal electromagnet in said Halbach array is equipped with a plurality of fork-like prongs at each end, and where the magnetic coils that surround each individual core of every vertical electromagnet in said Halbach array have gaps where said fork-like prongs are positioned to provide direct physical contact between cores.
    Type: Application
    Filed: July 15, 2013
    Publication date: January 15, 2015
    Inventor: ROBERTO SANCHEZ CATALAN
  • Publication number: 20150002251
    Abstract: A magnetic core includes an ellipse-shaped central post and two side posts. The ellipse-shaped central post includes a long axis and a short axis. The length of the long axis is greater than the length of the short axis. The two side posts are disposed on two sides of the ellipse-shaped central post and opposite to each other. The two side posts are connected with the ellipse-shaped central post through two connecting portions respectively for defining at least one winding space with the ellipse-shaped central post. By utilizing the ellipse-shaped central post, the volume of the winding space is increased, the diameter of the wire of the winding coil can be increased, the temperature of the winding encapsulation is easy to be lowered, the over-volume issue of the winding encapsulation is avoided, and the safe distance between the bobbin and the winding encapsulation is increased, so that the present disclosure meets the safety regulation.
    Type: Application
    Filed: September 12, 2013
    Publication date: January 1, 2015
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Han-Hsing Lin, Yu-Chun Lai, Yi-Lin Chen, Chia-Ming Liu, Chih-Ming Chen, Chien-Hung Liu
  • Publication number: 20140375403
    Abstract: Thermally annealed superparamagnetic core shell nanoparticles of an iron-cobalt ternary alloy core and a silicon dioxide shell having high magnetic saturation are provided. A magnetic core of high magnetic moment obtained by compression sintering the thermally annealed superparamagnetic core shell nanoparticles is also provided. The magnetic core has little core loss due to hysteresis or eddy current flow.
    Type: Application
    Filed: June 19, 2013
    Publication date: December 25, 2014
    Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventor: Michael Paul ROWE
  • Patent number: 8917154
    Abstract: An improved system for concentrating magnetic flux of a multi-pole magnetic structure at the surface of a ferromagnetic target uses pole pieces having a magnet-to-pole piece interface with a first area and a pole piece-to-target interface with a second area substantially smaller than the first area, where the target can be a ferromagnetic material or a complementary pole pieces. The multi-pole magnetic structure can be a coded magnetic structure or an alternating polarity structure comprising two polarity directions, or can be a hybrid structure comprising more than two polarity directions. A magnetic structure can be made up of discrete magnets or can be a printed magnetic structure.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: December 23, 2014
    Assignee: Correlated Magnetics Research, LLC.
    Inventors: Larry W. Fullerton, Mark D. Roberts, Wesley R. Swift, Jr., Hamilton G. Moore
  • Publication number: 20140367583
    Abstract: A magnet having an annular coolant fluid passage is generally described. Various examples provide a magnet including a first magnet and a second magnet disposed around an ion beam coupler with an aperture there through. Each of the first and second magnets including a metal core having a cavity therein, one or more conductive wire wraps disposed around the metal core, and an annular core element configured to be inserted into the cavity, wherein an annular coolant fluid passage is formed between the cavity and the annular core element. Furthermore, each annular core element may have a first diameter and a middle section having a second diameter, the second diameter being less than the first diameter. Other embodiments are disclosed and claimed.
    Type: Application
    Filed: August 14, 2013
    Publication date: December 18, 2014
    Applicant: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Scott Barraclough, James S. Buff
  • Patent number: 8911866
    Abstract: A powder for a powder magnetic core, a powder magnetic core, and methods of producing those products are provided, so that mechanical strength of a powder magnetic core can be enhanced by hydrosilylation reaction between vinylsilane and hydrosilane without degrading magnetic properties. The powder for a powder magnetic core is composed of magnetic particles 2 having a surface 21 coated with an insulating layer 3, wherein the insulating layer 3 includes a polymer resin insulating layer 33 comprising vinylsilane 4 and hydrosilane.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: December 16, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Daisuke Okamoto, Daisuke Ichigozaki, Shin Tajima, Masaaki Tani
  • Publication number: 20140354384
    Abstract: A magnetic core for a transformer, which includes a closed ring with a thick part and a thin part. The thin part is magnetically saturated before the thick part when excited by the same increasing magnetic fields. The thin part only operates briefly at or near first quadrant saturation point or a third quadrant saturation point and, for the rest of the time, it operates in a state between the first quadrant saturation point and the third quadrant saturation point. The present invention overcomes the drawbacks of the conventional magnetic core for a self-excitation push-pull type converter, and significantly improves the efficiency of the converter when it is under a light load, and further improves its efficiency while under a rated load. As the number of turns of the coil on the magnetic saturation transformer is reduced, the working frequency of the converter is improved while still keeping the loss low.
    Type: Application
    Filed: March 20, 2012
    Publication date: December 4, 2014
    Applicants: MORNSUN GUANGZHOU SCIENCE & TECHOLOGY LTD.
    Inventor: Baojun Wang
  • Patent number: 8860538
    Abstract: According to one aspect, there is provided an inductor core including: an axially extending core member, an axially extending external member at least partly surrounding the core member, thereby forming a space around the core member for accommodating a winding between the core member and the external member, a plate member presenting a radial extension and being provided with a through-hole, wherein the core member is arranged to extend into the through-hole, wherein the plate member is a separate member from the core member and the external member and is adapted to be assembled with the core member and the external member, wherein a magnetic flux path is formed which extends through the core member, the plate member and the external member.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: October 14, 2014
    Assignee: Hoganas AB (Publ)
    Inventors: Ola Andersson, Lars-Olov Pennander
  • Publication number: 20140265716
    Abstract: There is provided a soft magnetic core including: soft magnetic powder particles having an insulating coating layer formed on surfaces thereof and metal powder particles positioned between the soft magnetic powder particles.
    Type: Application
    Filed: May 17, 2013
    Publication date: September 18, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Hak Kwan KIM, Sung Yong AN, No Il PARK, Dong Hyeok CHOI
  • Patent number: 8803520
    Abstract: A magnetic core for a magnetic field sensor is made from a material having a solid matrix in which are dispersed superparamagnetic particles, the solid matrix being chosen so as not to perturb the magnetic properties of the superparamagnetic particles, and so that the superparamagnetic particles represent a percentage P of the total volume of the core chosen to be greater than 2.5% or chosen in the span defined by the relation L 10%?P?L?1% where L corresponds to a threshold L beyond which the core loses the superparamagnetic properties. A magnetic field sensor that includes the magnetic core and an electronic circuit for measuring a magnetic field induced in the magnetic core.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: August 12, 2014
    Assignee: Neelogy
    Inventor: Luc Lucien Marie Lenglet
  • Publication number: 20140218144
    Abstract: The present invention relates to an elliptical unit block for preparing a core using soft magnetic metal powder and a core with excellent high current DC bias characteristics using the same, and more specifically, to an elliptical unit block for preparing a core using soft magnetic metal powder used in an inductor for an automotive electronic sub-assembly using a high current buck or boost inductor or a three phase line reactor or fuel cell system for power factor correction (PFC), and a powered magnetic core prepared using the same.
    Type: Application
    Filed: September 5, 2012
    Publication date: August 7, 2014
    Applicant: CHANG SUNG CO.
    Inventors: Jae-Yeol Park, Dal-Joong Kim, Bong-Gi Yoo, Gu-Hyun Kim, Kwang-Yong Yoo
  • Publication number: 20140217829
    Abstract: The present invention relates to a ferrite core structure for a power supply device of an electric vehicle which changes the structure of a ferrite core module according to a related art to improve output and limits a reduction in strength due to warpage in a traveling direction of the vehicle to prevent cracks generated in a surface of an intermediate portion of a power supply road from occurring.
    Type: Application
    Filed: April 13, 2012
    Publication date: August 7, 2014
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Dong Ho Cho, Byung O. Kong, Young Moo Shin, Bo Yune Song, Sung Jun Son, Jae Gue Shin
  • Patent number: 8779878
    Abstract: A magnetic component includes: a magnetic core including an upper flange portion on one end side of a winding shaft portion and a lower flange portion on another end side of the winding shaft portion; a pair of conductive terminals attached to the lower flange portion; and a coil including a conductive wire. The terminals each include an electrode portion extending along a lower surface of the lower flange portion and including an end portion projecting outward relative to an outer periphery of the lower flange portion, and a columnar wire splicing portion erected from the end portion of the electrode portion, and an upper end surface of the wire splicing portion includes a wire splicing surface for conductive wire connection.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: July 15, 2014
    Assignee: Sumida Corporation
    Inventor: Juichi Oki
  • Patent number: 8774430
    Abstract: A linear interleaved magnetic motor in which the B-field flows between a plurality of motor cell elements, creating a long, serpentine gap. The motor is used with at least one flex circuit as a drive coil. The motor can be used as a drive motor for a loudspeaker transducer. Multiple loudspeaker transducers can be connected together to make a loudspeaker frame or system.
    Type: Grant
    Filed: December 2, 2012
    Date of Patent: July 8, 2014
    Inventor: Thomas Paul Heed
  • Publication number: 20140176381
    Abstract: There is provided a magnetic composite sheet including: a magnetic layer including first and second magnetic pieces having different sizes; and a cover film formed on one surface or both surfaces of the magnetic layer, wherein, in a cross-section of the magnetic composite sheet taken in a direction parallel to a direction in which the magnetic layer and the cover film are laminated, when a length of the first magnetic piece in a vertical direction is a and a length thereof in a horizontal direction is b, and a length of the second magnetic piece in the vertical direction is a? and a length thereof in the horizontal direction is b?, b/a is greater than b?/a?(b/a>b?/a?).
    Type: Application
    Filed: May 7, 2013
    Publication date: June 26, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Dong Hyeok CHOI, Jin Young KIM, Chang Ryul JUNG, Ji Man RYU, Sung Yong AN
  • Patent number: 8760249
    Abstract: A magnetic core including (i) a first magnetic material having a first magnetic permeability to substantially provide a core body of the magnetic core, and (ii) a second magnetic material having a substantially triangular structure positioned in a corner region of the core body. The corner region is defined by a region of the core body where a first portion of the core body coincides with a second portion of the core body in a manner that is substantially perpendicular. The second magnetic material is used to substantially evenly distribute magnetic flux in the magnetic core, and the second magnetic material has a second magnetic permeability that is lower than the first magnetic permeability.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: June 24, 2014
    Assignee: Marvell International Ltd.
    Inventor: George Shengshi Dai
  • Patent number: 8757584
    Abstract: An actuating device, particularly for actuating valves connected externally, includes a housing (10) and a coil body (12) arranged in the housing. The coil body has a coil winding (14) at least partially enclosing a coil tube (16), a pole core (20) connected at the coil tube free end, an armature (22) guided in a longitudinally displaceable manner at least in the pole tube (16) within an armature chamber (24) and interacting with an actuating part (26) for actuating the respective valve part. The pole tube (16) is designed as a receiving sleeve for the armature (22). The sleeve is fixed with its free end region to a fixed bearing point. The fixed bearing point is formed by two support parts (118, 124) of the pole core (20) that delimit a receiving gap between them, in which the free end region of the receiving sleeve is fixed in a clamped manner.
    Type: Grant
    Filed: June 3, 2009
    Date of Patent: June 24, 2014
    Assignee: Hydac Electronic GmbH
    Inventors: Martin Bill, Florian Lauer, Christoph Meyer
  • Patent number: 8757585
    Abstract: An actuating device, particularly for actuating valves that can be connected externally, includes a housing (10) and a coiled body (12) in the housing and having a coil winding (14). The winding encloses a pole tube (16) at least partially, having a pole core (20) connected at its free end. An armature (22) is guided in a longitudinally displaceable manner at least in the pole tube (16) within an armature chamber (24) and interacts with an actuating device (26) for actuating a valve part. The actuating part (26) is guided within the pole core (20) along an annular body (92), sealing the inside of the pole core (20) and the pole tube (16) relative to the surrounding area.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: June 24, 2014
    Assignee: Hydac Electronic GmbH
    Inventors: Martin Bill, Florian Lauer
  • Publication number: 20140167894
    Abstract: An electric machine includes a first magnetic pole with an arrangement of interposed magnetically active layers and magnetically inactive layers, and a second magnetic pole movable relative to the first magnetic pole and spaced from the first magnetic pole by a gap. An electrical conductor operates as a coupling element between an electrical circuit and a magnetic circuit. At an operating time, a common useful magnetic flux for electromechanical energy conversion flows through the magnetic circuit composed of the first magnetic pole, the gap and the second magnetic pole. The magnetically inactive layers have a lower average density than the magnetically active layers. A ratio (k) of the total volume of the magnetically active layers to the combined total volume of the magnetically active and inactive layers fulfills the condition 0.5?k?0.8 A method for producing an electric machine are also disclosed.
    Type: Application
    Filed: July 20, 2012
    Publication date: June 19, 2014
    Applicant: Siemens Aktiengesellschaft
    Inventors: Zeljko Jajtic, Gerhard Matscheko
  • Publication number: 20140159841
    Abstract: There is provided a soft magnetic core including: a composite metal powder in which surfaces of iron (Fe) particles are coated with an insulating layer; a body part formed by compressing the composite metal powder; and an alloying element diffused from a surface of the body part to an inside thereof.
    Type: Application
    Filed: February 19, 2013
    Publication date: June 12, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Hak Kwan KIM, Chang Ryul Jung, No II Park, Sung Yong An
  • Publication number: 20140152416
    Abstract: A magnetic core, such as for an interphase transformer, made of a nanocrystalline alloy, which consists of Fe100-a-b-c-d-x-y-zCuaNbbMcTdSixByZz and up to 1 at. % of impurities, whereby M is one or more of the elements Mo, Ta or Zr; T is one or more of the elements V, Cr, Co or Ni; and Z is one or more of the elements C, P or Ge, and 0 at. %?a<1.5 at. %, 0 at. %?b<4 at. %, 0 at. %?c<4 at. %, 0 at. %?d<5 at. %, 12 at. %<x<18 at. %, 5 at. %<y<12 at. %, and 0 at. %?z<2 at. %, the core having a saturation magnetostriction of <2 ppm and a permeability between 100 and 1,500, wherein the alloy has been exposed to a heat treatment at a temperature between 450 and 750° C. under a tensile stress between 30 and 500 MPa.
    Type: Application
    Filed: October 10, 2013
    Publication date: June 5, 2014
    Applicant: Vacuumschmelze GmbH & Co. KG
    Inventors: Giselher HERZER, Christian POLAK, Klaus REICHERT
  • Publication number: 20140139313
    Abstract: The disclosure provides a magnetic core comprising a base, a center column, a first side column and a second side column fixed to the base. The first side column, the second side column and the center column are defined an annular space for accommodating a bobbin and/or a winding. The annular space have a first core opening and a second core opening thereon. A size of the first core opening between the first side column and the second side column is defined as a first core opening width. A size of the second core opening between the first side column and the second side column is defined as a second core opening width. Wherein at least one wire receiving space is provided at the base of the magnetic core, and the wire receiving space is located within the first core opening and/or the second core opening.
    Type: Application
    Filed: March 15, 2013
    Publication date: May 22, 2014
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Jinping Zhou, Teng Liu, Min Zhou, Minghui Dai, Yicong Xie