Core Insulation (e.g., Between Core Parts) Patents (Class 336/219)
  • Patent number: 10065855
    Abstract: An integrated circuit and the method to produce the integrated circuit comprising: a substrate (10); active devices (11); plurality of metal layers (17), wherein said metal layers are separated by dielectric layers (13) and connected to each other by plurality of vias (19); at least one micromechanical region (15) wherein some of the dielectric layers are removed leaving hollow spaces (23), thereby some of said metal and via layers form a micromechanical device in said micromechanical region, wherein said micromechanical device comprises at least one multi-layer structure (165) that is built of a plurality of metal layers and at least one via layer and said multi-layer structure is characterized by that at least two metal layers of said multi-layer structure are joined by at least one modified via (41).
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: September 4, 2018
    Assignees: UNIVERISTAT POLITECNICA DE CATALUNYA
    Inventors: Piotr Jozef Michalik, Daniel Fernández Martínez, Jordi Madrenas Boadas
  • Patent number: 9019062
    Abstract: An inductive component has a winding and a core that includes a plurality of core areas that contain different magnetic materials.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: April 28, 2015
    Assignee: EPCOS AG
    Inventor: Kvetoslav Hejny
  • Publication number: 20150048920
    Abstract: Disclosed herein is an inductor element having an internal electrode in which a first plating layer and a second plating layer having a coil shape are embedded, the inductor element including: a first plating layer formed on a support member; an insulating layer covering the first plating layer and provided with an opening which exposes an upper surface of the first plating layer; and a second plating layer filled in the opening, whereby the inductor element in which the internal electrode having a high aspect ratio is embedded is implemented.
    Type: Application
    Filed: August 14, 2014
    Publication date: February 19, 2015
    Inventors: Hwan Soo LEE, Hye Yeon CHA, Young Sik CHOI, Sung Kwon WI
  • Publication number: 20150048919
    Abstract: A manufacturing process for a structure having a porcelain body and a flange includes: inserting an end portion of the body into a flange opening, providing a gap between the body end portion and a metal surface of the flange, filling the gap with adhesive to create a bond between the surfaces, installing an electrically active subassembly in the porcelain body and placing the structure in a heated environment to simultaneously dry the subassembly and fully cure the adhesive to provide the bond.
    Type: Application
    Filed: January 14, 2013
    Publication date: February 19, 2015
    Inventors: Paolo Diamanti, Ross McTaggart, Joseph Arjune
  • Publication number: 20150002253
    Abstract: Disclosed herein are a thin-layer type common mode filter and a method for preparing the same. The thin-layer type common mode filter includes: a ferrite substrate; a primer layer formed on the ferrite substrate; and a photosensitive insulating layer formed on the primer layer, wherein the primer layer is formed by chemically coupling the ferrite substrate with the photosensitive insulating layer. Therefore, the thin-layer type common mode filter according to the exemplary embodiments of the present invention may simultaneously apply the mechanical surface treatment method and the primer layer chemically coupled with the ferrite substrate and the photosensitive insulating layer to increase the interlayer adhesion, thereby increasing the reliability of the common mode filter.
    Type: Application
    Filed: April 23, 2014
    Publication date: January 1, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Yong Il KWON, Eun Sil KIM, Keun Yong LEE, Sang Hyun SHIN
  • 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: 8766755
    Abstract: A transformer and a liquid crystal display apparatus having the transformer are provided. The transformer includes a bobbin having at least one first winding section, at least one second winding section, and at least one core insertion groove formed therein. The transformer also includes at least one coil wound around the first winding section and the second winding section with at least one core inserted into the core insertion groove.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: July 1, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yun-Gun Lee, Moon-Shik Kang, Timothy Su, Ju-Hyun Lee
  • Patent number: 8624697
    Abstract: The main purpose of this invention is to improve high forming pressure of existing Fe—Si—Al insulating magnetic powder which is not suitable for forming, combine heterogeneous insulating magnetic powder, produce hollow cup-like cover and Fe—Si—Al rod core for full magnetic path component assembling, and change the shape structure of rod core and cover design, so there will be advantages including easy to winding, assemble and cooling.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: January 7, 2014
    Assignee: Curie Industrial Co., Ltd.
    Inventor: Sywe-Rung Shang
  • 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: 8552708
    Abstract: A monolithic DC to DC converter, provides a semiconductor substrate, a surface FET formed on the semiconductor substrate that modulates currents across a surface of the semiconductor substrate, and a toroidal inductor with a magnetic core formed on the substrate around the FET and having a first winding connected to the FET.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: October 8, 2013
    Inventor: L. Pierre de Rochemont
  • Patent number: 8497756
    Abstract: In a reactor core, a gap section between a plurality of core material portions is fixed by adhesion through a spacer, and a resin is arranged vertical to the adhering surface between the core material and the spacer, for sandwiching at least a part of the core material. The resin material preferable a molded material.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: July 30, 2013
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takaaki Kiyono, Masaki Sugiyama
  • Patent number: 8450830
    Abstract: A plurality of sequential electro-deposition, planarization and insulator deposition steps are performed over a patterned thick photoresist film to form a laminated ferromagnetic alloy core for micro-fabricated inductors and transformers. The use of a plurality of contiguous thin laminations within deep patterns on non-removable photoresist film provides sufficient volume of magnetic film in, for example, high frequency applications, and reduces eddy current loss at high frequency.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: May 28, 2013
    Assignee: National Semiconductor Corporation
    Inventors: Peter J. Hopper, William French, Andrei Papou, Dok Won Lee
  • 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
  • Patent number: 8421274
    Abstract: A wireless energy transfer system includes a first energy transfer unit having at least one resonant frequency, a second energy transfer unit having the at least one resonant frequency, and a load. The first wireless energy transfer unit includes a first coil magnetically coupled to a first wireless energy transfer cell, and the second wireless energy transfer unit includes a second coil magnetically coupled to a second wireless energy transfer cell. The first coil receives first energy and through the magnetic coupling between the first coil and the first wireless energy transfer cell, the first wireless energy transfer cell is caused to generate second energy, wherein the second wireless energy transfer cell receives the second energy and through the magnetic coupling between the second wireless energy transfer cell and the second coil, the second coil is caused to provide third electromagnetic wave energy to the load.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: April 16, 2013
    Assignee: University of Pittsburgh-Of the Commonwealth System of Higher Education
    Inventors: Mingui Sun, Steven Hackworth, Robert Sclabassi, Fei Zhang, Xiaoyu Liu
  • Publication number: 20130033350
    Abstract: A substrate has a coil that is a choke coil part and, for example, is used for controlling a motor. At the substrate, an electronic component mounting part is formed such that a circuit conductor therein is to be exposed to outside. A portion other than an externally connected portion such as the electronic mounting part is covered with substrate-forming resin to form an injection molded circuit board. The coil arranged at the substrate (the injection molded circuit board) is provided for smoothing current inputted from outside. A core part is formed at the coil by core-forming resin such that the coil part covers at least a center core part of the coil.
    Type: Application
    Filed: October 11, 2012
    Publication date: February 7, 2013
    Applicants: FURUKAWA AUTOMOTIVE SYSTEMS, INC., FURUKAWA ELECTRIC CO., LTD.
    Inventors: FURUKAWA ELECTRIC CO., LTD., FURUKAWA AUTOMOTIVE SYSTEMS, INC.
  • Patent number: 8358191
    Abstract: An inductor may include an electrical conductor for generating a magnetic field; and at least one inductor core unit which is arranged in the region of the conductor and includes an inductor core composed of a magnetizable material and also at least one air gap, a filling material being introduced at least into part of the air gap for the purpose of mechanical stabilization, wherein the filling material is configured in such a way that it has a coefficient of thermal expansion, the value of which lies in a range of ±70% of the value of the coefficient of thermal expansion of the magnetizable material of which the inductor core is composed.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: January 22, 2013
    Assignee: Osram Gesellschaft mit beschraenkter Haftung
    Inventors: Friedrich Witzani, Andreas Huber
  • Patent number: 8325002
    Abstract: A variety of power inductor structures are obtained by arranging a magnetic material block between a plurality of wires and a plurality of bond fingers or bond finger pairs. The power inductor structure can provide high inductance and high currents and at the same time afford smaller sizes.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: December 4, 2012
    Assignee: Advanced Semiconductor Engineering, Inc.
    Inventors: Sungmook Lim, Yunjae Chong, Sungmo Kang
  • Publication number: 20120280781
    Abstract: A controlled seam magnetic core lamination utilizable in an inductor structure includes a magnetic base and first and second spaced-apart magnetic sidewalls extending substantially orthogonally from the base to define a seam therebetween.
    Type: Application
    Filed: May 2, 2011
    Publication date: November 8, 2012
    Inventors: Peter Smeys, Andrei Papou, Peter Johnson, Anuraag Mohan
  • Patent number: 8284009
    Abstract: The present invention provides a transformer including a first bobbin around which a primary coil is wound, a second bobbin which is disposed adjacent to the first bobbin and around which a secondary coil is wound, a core disposed across the first and second bobbins and forming a closed magnetic path. The core is divided into a first core positioned on the side where the first bobbin is present and a second core positioned on the side where the second bobbin is present, and an insulating member is interposed in a magnetically coupled portion between the first core and the second core, the insulating member including outer circumference sheaths that cover at least one of the first and second cores and a barrier interposed between the opposing surfaces of the first and second cores.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: October 9, 2012
    Assignee: FDK Corporation
    Inventors: Hideyuki Akiyama, Tohru Hirohashi, Kiyoshi Hironaka
  • Patent number: 8198973
    Abstract: The iron core characteristics of an amorphous iron core transformer degrade significantly when machining from material into a transformer. This phenomenon is suppressed to improve the iron core characteristics of the finished transformer products. In the present invention, an insulating thin film is formed in at least one side of an amorphous ribbon, and is formed in at least one for each plurality of amorphous ribbons of iron core material. Moreover, in the surface of the amorphous ribbon that is the iron core material of the amorphous iron core transformer, silane or the like is vapor deposited to form an insulating thin film, the insulating thin film being formed in the thickness of approximately 1 ?m. With such structure, an increase in eddy current loss occurring when machining from the material into a transformer is suppressed to reduce no-load loss of the transformer.
    Type: Grant
    Filed: February 9, 2007
    Date of Patent: June 12, 2012
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Kazuyuki Fukui, Katsutoshi Inagaki, Masao Hosokawa
  • Patent number: 8183972
    Abstract: An oil filled high power transformer for high voltages with coils. The transformer including a number of stacked layers of, in the main concentric, insulated conductors forming transformer coils. The winding layers are separated by spacers. One or more spacers are provided with at least one integrated electrical discharge barrier extending off the central body of the spacer in the vicinity of the area where the spacer is in contact with a winding. Breakdown along spacer and alongside the spacer-oil interface is reduced getting improved breakdown strength of the oil filled transformer.
    Type: Grant
    Filed: September 29, 2006
    Date of Patent: May 22, 2012
    Assignee: ABB Technology Ltd.
    Inventors: Arne Hjortsberg, Jan Hajek
  • Patent number: 8093981
    Abstract: A laminated inductor includes a plurality of magnetic plates, each having a surface to which a high-permeability magnetic body is attached, and at least one spacer assembly interposed between the magnetic plates. The spacer assembly includes two magnetic boards having moderate magnetic permeability and a magnetic board having low magnetic permeability interposed between the two moderate-permeability magnetic boards. Both moderate-permeability and low-permeability boards are provided, at a surface of each board, with a magnetic body having high permeability. A magnetic top lid and a magnetic bottom lid are respectively set on outside surfaces of the topmost and bottommost ones of the magnetic plates. The high-permeability magnetic bodies mounted to the magnetic plates and the arrangement of the spacer assembly help improve the characteristic of DC superimposition of the laminated inductor thereby enhancing current endurance thereof.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: January 10, 2012
    Assignee: Mag. Layers Scientific-Technics Co., Ltd.
    Inventor: Jui-Min Chung
  • Publication number: 20110309715
    Abstract: A dielectric insulation medium. The insulation medium is characterized in that it comprises a fluoroketone having from 4 to 12 carbon atoms.
    Type: Application
    Filed: July 22, 2011
    Publication date: December 22, 2011
    Inventors: Max-Steffen Claessens, Per Skarby
  • Publication number: 20100265021
    Abstract: An electric coil comprising a coil core (10), a main winding (16) surrounding the coil core (10) and having an electrically conductive coil wire, a start winding (14) surrounding the coil core (10) and having an electrically conductive coil wire, and an end winding (18) surrounding the coil core (10) and having an electrically conductive coil wire, is characterized in that the coil wire of the main winding (16), the coil wire of the start winding (14), and the coil wire of the end winding (18) are formed by a continuous wound wire, and at least the main winding (16), preferably also the start winding (14), is wound directly onto the coil core (10).
    Type: Application
    Filed: July 15, 2008
    Publication date: October 21, 2010
    Applicant: ETA SA MANUFACTURE HORLOGERE SUISSE
    Inventors: Clemens Scherer, Yvan Pillet, Guido Käufer, Daniel Maeder, Friedrich Durand
  • Patent number: 7679483
    Abstract: A core for a reactor includes: a plurality of core members, each of which has a convexly curved side face that serves as a bonding face; and a gap plate that is interposed between the curved side faces of the core members and that is bonded to the curved side faces. The gap plate includes a flat plate and a plurality of projections which project from each face of the plate and each of which has a tip end that contacts the curved side face. The projections are formed at positions near the outer edges of the plate, which are distant from the center of the plate at which no projection is formed, and which are at equal distances from the center of the plate.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: March 16, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroaki Yuasa, Shuichi Hirata
  • Publication number: 20090315663
    Abstract: In a reactor core, a gap section between a plurality of core material portions is constituted by adhering and fixing the gap section through a spacer, and a resin is arranged vertical to the adhering surface between the core material and the spacer, for sandwiching at least a part of the core material. The resin material is preferably a molded material.
    Type: Application
    Filed: September 19, 2007
    Publication date: December 24, 2009
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Takaaki Kiyono, Masaki Sugiyama
  • Patent number: 7456724
    Abstract: The present invention provides an electrical steel sheet core for a low-noise transformer capable of effectively lowering noise by suppressing vibration perpendicular to the surfaces of the steel sheets and reducing vibration, and relates to an electrical steel sheet for a low-noise transformer characterized by randomly inserting viscoelastic layers with both viscosity and elasticity into the gaps of the steel sheet lamination layers, and a low-noise transformer formed by using said electrical steel sheet.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: November 25, 2008
    Assignee: Nippon Steel Corporation
    Inventors: Hisashi Mogi, Masahiro Fujikura, Shuichi Yamazaki, Masato Mizokami, Masao Yabumoto, Osamu Akisue
  • Publication number: 20080231409
    Abstract: The object of the present invention is to provide a powder core and method for making the same that is equipped with insulative coating having superior heat resistance, with the coating making it possible to adequately restrict the flow of eddy currents between particles. The powder core is equipped with a plurality of compound magnetic particles bonded to each other. Each of said plurality of composite magnetic particles includes: a metal magnetic particle 10; an insulative lower layer coating 20 surrounding a surface 10a of said metal magnetic particle 10; an upper layer coating 30 surrounding said lower layer coating 20 and containing silicon; and dispersed particles 50 containing a metal oxide compound and disposed in said lower layer coating 20 and/or said upper layer coating 30. A mean particle diameter R of the dispersed particles 50 meets the condition 10 nm<R?2 T, where the average thickness of the coating combining the lower layer coating 20 and the upper layer coating 30 is T.
    Type: Application
    Filed: January 28, 2005
    Publication date: September 25, 2008
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Hirokazu Kugai, Naoto Igarashi, Toru Maeda, Kazuhiro Hirose, Haruhisa Toyoda, Koji Mimura, Takao Nishioka
  • Patent number: 7394342
    Abstract: An axial end portion of a dielectric sheet, which is wound around a central core of an ignition coil, includes an axially projecting portion, which projects from an axial end surface of the central core positioned radially inward of primary and secondary coils in a case. An inner peripheral side axial end corner and an outer peripheral side axial end corner in the axially projecting portion are respectively formed into a blunt smooth round shape. Dielectric resin is filled in spaces in the case. Alternatively, the axially projecting portion may have a folded end portion, which includes a plurality of generally arcuate segments folded one after another on one circumferential side thereof.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: July 1, 2008
    Assignee: Denso Corporation
    Inventors: Kazuhide Kawai, Shoji Takahashi, Chihiro Ikedo
  • Publication number: 20080068121
    Abstract: The iron core characteristics of an amorphous iron core transformer degrade significantly when machining from material into a transformer. This phenomenon is suppressed to improve the iron core characteristics of the finished transformer products. In the present invention, an insulating thin film is formed in at least one side of an amorphous ribbon, and is formed in at least one for each plurality of amorphous ribbons of iron core material. Moreover, in the surface of the amorphous ribbon that is the iron core material of the amorphous iron core transformer, silane or the like is vapor deposited to form an insulating thin film, the insulating thin film being formed in the thickness of approximately 1 ?m. With such structure, an increase in eddy current loss occurring when machining from the material into a transformer is suppressed to reduce no-load loss of the transformer.
    Type: Application
    Filed: February 9, 2007
    Publication date: March 20, 2008
    Inventors: Kazuyuki Fukui, Katsutoshi Inagaki, Masao Hosokawa
  • Patent number: 7266882
    Abstract: Manufacturing of miniaturized three-dimensional electric components are presented, as well as components manufactured by the methods. The manufacturing methods comprise micro-replication of at least one master structure, e.g. via a mould structure, in at least one polymer layer onto which layer at least one conductive path is provided.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: September 11, 2007
    Assignees: Nokia Corporation, Amic AB
    Inventors: Tapani Ryhanen, Hans Otto Scheck, Ove Öhman, Olle Larsson, Mike Read, Tomas Lindström
  • Patent number: 7210218
    Abstract: A method of fabricating electrical core sheet assemblies such as transformer limbs, transformer yokes, and transformer cores, includes the steps of first cutting electrical core sheets, whose main surfaces have been provided with an anti-corrosion layer, into a desired shape. The side surfaces of the cut core sheets are first provided with an anti-corrosion layer, before the cut core sheets are assembled into the desired core sheet assembly.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: May 1, 2007
    Assignee: ABB T&D Technologies Ltd.
    Inventors: Benjamin Weber, Thomas J. Lanoue
  • Patent number: 7068138
    Abstract: An inductor and a method of forming and the inductor, the method including: (a) providing a semiconductor substrate; (b) forming a dielectric layer on a top surface of the substrate; (c) forming a lower trench in the dielectric layer; (d) forming a resist layer on a top surface of the dielectric layer; (e) forming an upper trench in the resist layer, the upper trench aligned to the lower trench, a bottom of the upper trench open to the lower trench; and (f) completely filling the lower trench at least partially filling the upper trench with a conductor in order to form the inductor. The inductor including a top surface, a bottom surface and sidewalls, a lower portion of said inductor extending a fixed distance into a dielectric layer formed on a semiconductor substrate and an upper portion extending above said dielectric layer; and means to electrically contact said inductor.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: June 27, 2006
    Assignee: International Business Machines Corporation
    Inventors: Daniel C. Edelstein, Panayotis C. Andricacos, John M. Cotte, Hariklia Deligianni, John H. Magerlein, Kevin S. Petrarca, Kenneth J. Stein, Richard P. Volant
  • Patent number: 7068135
    Abstract: A stick-type ignition coil have a central core, a cylindrical member, primary spool, primary coil, secondary spool, secondary coil, outer core and a resin insulator. The two longitudinal end corners and faces of the core are covered by respective buffer members. The inner circumferential corners of the outer core supported by ring members. Some of the members disposed radially inside and other members disposed radially outside of the inside members are held slidably to each other in the ignition coil. The spools are made of resin containing a rubber in excess of 5 weight percent and reinforcing materials. The resin insulator contains a flexible material.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: June 27, 2006
    Assignee: Denso Corporation
    Inventors: Akimitsu Sugiura, Yoshitaka Sato
  • Patent number: 6977574
    Abstract: A stick-type ignition coil have a central core, a cylindrical member, primary spool, primary coil, secondary spool, secondary coil, outer core and a resin insulator. The two longitudinal end corners and faces of the core are covered by respective buffer members. The inner circumferential corners of the outer core is supported by ring members. Some of the members disposed radially inside and other members disposed radially outside of the inside members are held slidably to each other in the ignition coil. The spools are made of resin containing a rubber in excess of 5 weight percent and reinforcing materials. The resin insulator contains a flexible material.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: December 20, 2005
    Assignee: Denso Corporation
    Inventors: Akimitsu Sugiura, Yoshitaka Sato
  • Patent number: 6967559
    Abstract: A power supply for a device which has a load, comprising a first resonant generator and a second resonant generator, coupled in parallel, each generator having a phase output. The power supply further comprises a control circuit coupled to the first and second generators controlling the first and second phase outputs, wherein the first phase output and the second phase output are summed to provide a variable power supply to the load.
    Type: Grant
    Filed: March 15, 2004
    Date of Patent: November 22, 2005
    Assignee: Electromed Internationale Ltee
    Inventor: Robert Beland
  • Patent number: 6933828
    Abstract: Electromagnetic devices are provided including an electrically conductive core having an inner diameter defining an opening therethrough and an outer diameter, the core having sharp edges extending circumferentially around the inner diameter and around the outer diameter thereof. A plurality of polymeric protection members are wrapped circumferentially around the core and positioned adjacent the sharp edges of the core. The protection members have a short leg positioned adjacent an end of the core. A coated wire is wrapped around the core so as to be magnetically coupled thereto and around the polymeric protection members so as to be displaced from the sharp edges of the core. Polymeric protection members and methods for manufacturing such members and for fabricating devices using such members are also provided.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: August 23, 2005
    Assignee: Tyco Electronics Corporation
    Inventors: Luis Orlando Puigcerver, David Edwin Bowling, Robert Paul Glembocki, Charles J. Connor, Jr.
  • Patent number: 6919789
    Abstract: A connecting structure of choke coil, comprises a coil base composed of two halves forming an accommodating area within the two halves, and a coiling area beyond the two halves, and a corresponding symmetric connecting section extended from a solid section each on both sides of the coiling area, such that the coil base is installed onto a housing and constitutes an insulation with the housing to prevent a high-voltage electric leakage and comply with the requirements of high-voltage electric leakage tests.
    Type: Grant
    Filed: March 17, 2003
    Date of Patent: July 19, 2005
    Assignee: SZ Fong Electronics Co., LTD
    Inventor: Kuo-Liang Lin
  • Patent number: 6914513
    Abstract: This invention describes materials system and processing conditions for manufacturing magnetic circuit components such as induction coils and transformers that are non wire-wound, miniature in size and, have a low manufacturing cost.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: July 5, 2005
    Assignee: Electro-Science Laboratories, Inc.
    Inventors: Richard L. Wahlers, Cornelius Y. D. Huang, Alvin H. Feingold, Merrill R. Heinz, Michael Alan Stein
  • Patent number: 6880228
    Abstract: A three-phase transformer and a method of its manufacture are presented. The transformer comprises a magnetic circuit and three coil blocks. The magnetic circuit comprises two spaced-apart, parallel, plate-like elements; and three spaced-apart, parallel column-like elementary circuits. Each of the column-like elementary circuits carries the corresponding one of the three coil blocks, and serves for the corresponding one of the three phases. The column-like elementary circuits are substantially perpendicular to the plate-like elements, and are enclosed therebetween such as to form a spatial symmetrical structure about a central axis of the transformer. Each of the column-like elementary circuits is substantially a toroid in the form of a multi-layer structure formed by winding a predetermined number N of packages of magnetic strips about a central axis of the toroid, each package being composed of a predetermined number n of layers formed by n strips placed on top of each other.
    Type: Grant
    Filed: April 26, 2001
    Date of Patent: April 19, 2005
    Assignee: A.T.T. Advanced Transformer Technologies, Ltd.
    Inventors: Yuri Bolotinsky, Alexander Rubshtein, Michael Savulkin, Eliezer Adar
  • Patent number: 6834644
    Abstract: An ignition assembly provides a current to a spark plug to combust fuel in a cylinder of an internal combustion engine. The ignition coil assembly includes a primary winding defining a central axis. A secondary winding is wrapped about the primary winding coaxial with the central axis. The ignition coil assembly also includes a central core extending through the primary winding coaxial with the central axis. The central core includes a plurality of core components each having a single exterior surface that is continuous. In addition, each of the single exterior surface extends through an arcuate path.
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: December 28, 2004
    Assignee: Delphi Technologies, Inc.
    Inventors: Albert Anthony Skinner, John E Hazelwood, Thomas B. Bennett
  • Patent number: 6694958
    Abstract: In an ignition device for an internal combustion engine, comprising a spark plug made to carry out an electric discharge between an center electrode and an earth electrode and an ignition coil having a primary winding and a secondary winding for supplying a high voltage to the spark plug, notch portions are made in a ceramic spool on which one of the primary and secondary windings is wound and projecting portion are made in an insulating-resin-made holding member into which connector terminals are incorporated, with the projecting portions being engaged with the notch portions. The engagement of the projecting portions and the notch portions prevents the connector terminals from moving with respect to the ceramic spool in circumferential directions of the ceramic spool during terminal connection work.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: February 24, 2004
    Assignee: Denso Corporation
    Inventors: Hiromi Hiramatsu, Masamichi Shibata, Tetsuya Miwa, Takeo Maekawa
  • Publication number: 20030179066
    Abstract: A technique is provided for insulating a winding or coil for an electrical machine such as a motor. The coil is wound and placed in a taping station. Multiple layers of insulating tape are applied along an end region with leads bent back from the end region. The taping station permits the leads to be then placed over the insulated end region, and the main body region of the coil is similarly taped in a continuous uninterrupted manner. The tape wrap pitch may be varied along certain regions, where increased dielectric strength is desired. Following the insulating tape application, an armor tape may be applied over both the end region and the main region of the coil in a continuous uninterrupted manner. The coil can then be finished and assembled in a machine such as an electric motor stator.
    Type: Application
    Filed: January 31, 2002
    Publication date: September 25, 2003
    Inventors: Ray Thomas Reid, Jeffrey A. Hudson
  • Patent number: 6617950
    Abstract: A common mode and differential mode inductance assembly including first and second torridial cores wherein first and second windings are wrapped about first and second segments of the first core and the first core forms a first surface and wherein the second core forms a second surface and is positioned adjacent the first core such that the first and second surfaces oppose each other and a gap is formed between the first and second surfaces.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: September 9, 2003
    Assignee: Rockwell Automation Technologies Inc.
    Inventors: Thomas P. Gilmore, Glenn Ray
  • Patent number: 6600402
    Abstract: A bobbin is adapted to support a winding on a permeable core and has a wall that provides a confined thermally conductive channel that causes conduction of heat along a predetermined path from the core to a location outside the winding. A value of magnetizing inductance in a transformer is set by adjusting the gap until the value of magnetizing inductance has been set and attaching a segment of the bobbin to a pair of core pieces to maintain the gap. A permeable slug provides a permeable path outside of the hollow interior space and does not couple the winding, and an electrically insulating coupler is interposed between the slug and the winding to electrically insulate the winding.
    Type: Grant
    Filed: October 20, 1998
    Date of Patent: July 29, 2003
    Assignee: VLT Corporation
    Inventors: Michael B. LaFleur, Patrizio Vinciarelli
  • Patent number: 6593836
    Abstract: A bobbin is adapted to support a winding on a permeable core and has a wall that provides a confined thermally conductive channel that causes conduction of heat along a predetermined path from the core to a location outside the winding. A value of magnetizing inductance in a transformer is set by adjusting the gap until the value of magnetizing inductance has been set and attaching a segment of the bobbin to a pair of core pieces to maintain the gap. A permeable strip provides a permeable path outside of the hollow interior space and does not couple the winding, and an electrically insulating coupler is interposed between the slug and the winding to electrically insulate the winding.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: July 15, 2003
    Assignee: VLT Corporation
    Inventors: Michael B. LaFleur, Patrizio Vinciarelli
  • Patent number: 6411188
    Abstract: A dry-type power distribution transformer has a generally rectangular, wound amorphous metal core and a resin encapsulated, generally rectangular coil. The core has a generally rectangular core window within which is located a substantially straight section of the coil. When assembled to form a power distribution transformer, the shape of the coil's substantially strait section conforms to the shape of the core window. The transformer is inexpensive to manufacture, exhibits low resistivity and low core loss, and is light weight, compact and reliable in operation.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: June 25, 2002
    Assignee: Honeywell International Inc.
    Inventors: D. Christian Pruess, David M. Nathasingh
  • Publication number: 20020047768
    Abstract: An improved magnetic structure suitable for electronic applications is disclosed. The magnetic structure may be formed on or within a substrate such as a printed circuit board by forming a layer of magnetic material, pattering the layer of magnetic material, and etching the layer to form the magnetic structure. Various insulating layers and/or conductive layers may then be formed over the magnetic structures as part of the substrate. Inductors suitable for use in power supplies may be formed using the magnetic structures of the present invention.
    Type: Application
    Filed: October 10, 2001
    Publication date: April 25, 2002
    Inventor: Thomas P. Duffy
  • Patent number: 6259347
    Abstract: The apparatus for cooling a high power electrical transformer and electrical motors uses thermally conductive material interleaved between the turn layers of a high power transformer and iron core laminates to provide a low resistant thermal path to ambient. The strips direct excess heat from within the interior to protrusions outside of the windings (and core) where forced air or thermally conductive potting compound extracts the heat. This technique provides for a significant reduction of weight and volume along with a substantial increase in the power density while operating at a modest elevated temperature above ambient.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: July 10, 2001
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Eddie Sines
  • Patent number: 5955201
    Abstract: The present invention relates to a nonoriented electrical steel sheet coated on both surfaces with a cured insulative coating for providing a high level of surface resistivity to minimize interlaminar power losses. The cured insulative coating on the steel sheet includes, based upon 100 parts by dry weight, 20-60 parts of aluminum phosphate, 20-70 parts of at least one inorganic particulate silicate and 10-25 parts of an acrylic resin. The cured coating is formed from an acid aqueous suspension that may include up to 1 part by weight of a water-soluble organic solvent per each part of the resin. The aqueous suspension has a pH of about 2-2.5, a silicate particle size of 0.3-60 .mu.m, a resin particle size of less than 1 .mu.m, less than about 0.5 wt. % unreacted phosphoric acid and a specific gravity of about 1.0-1.3. The silicate may be one or more from the group consisting of aluminum silicate, aluminum potassium silicate and magnesium silicate.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: September 21, 1999
    Assignee: Armco Inc.
    Inventors: Dannie S. Loudermilk, Jack L. Brown