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| Number | Title | Issue Date |
| 7834737 | Ignition apparatus having bonded steel wire central core An ignition apparatus includes a transformer having a central core, a primary winding disposed thereabout, a secondary winding disposed outwardly of the primary winding, a case configured to house the central components, and an outer core or shield disposed outwardl... | 11/16/2010 |
| 7782169 | Magnetic core A magnetic core (1, 1′, 20, 28, 29, 58, 61, 70, 70′, 80, 80′, 90) for a magnetic component has a longitudinal axis parallel to which a magnetic current is to be substantially guided inside the magnetic core. The magnetic core consists of a plurality of ... | 08/24/2010 |
| 7768375 | Stack of metallic laminations and process for forming a lamination stack A stack of metallic laminations, a metallic lamination and a process for forming a lamination stack. The stack of laminations includes at least one locking lamination provided with at least two locking openings and at least one passage lamination comprising at least... | 08/03/2010 |
| 7724120 | Magnetic pole for magnetic levitation vehicles A magnetic pole for magnetically levitation vehicles is described comprising a core and a winding applied on said core. According to the present invention, the winding has two spaced disks formed of conductor strip sections (21a, 21b) wou... | 05/25/2010 |
| 7675398 | Iron core for stationary apparatus and stationary apparatus 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 a... | 03/09/2010 |
| 7656267 | Electrical transformers and assemblies The present disclosure relates to electrical transformer assemblies including a first lamination assembly defining a passage therethrough; and a second lamination assembly configured and dimensioned for press-fit or slide-fit engagement in the passage formed in the ... | 02/02/2010 |
| 7646281 | Snap-together choke and transformer assembly for an electric arc welder An apparatus for an electric arc welder comprising a first electromagnetic device including a first core assembly, wherein the first core assembly has a first stack of laminations which are press-fitted or snapped together into interlocking engagement with a complem... | 01/12/2010 |
| 7623018 | Slim filter inductor for electronic ballast Technology presented in the following utility patent yields a significant innovation within the field of electrical lighting. An alternative configuration of the filter inductor, which serves as part of a passive power factor correction circuit, increases the overal... | 11/24/2009 |
| 7561016 | Iron core, iron core manufacturing method, alignment apparatus, and exposure apparatus An iron core includes an electromagnetic steel plate having a first region on the surface of which an insulating film is formed and a second region which is not covered with the insulating film and exposed, and a coating member which coats at least the second region... | 07/14/2009 |
| 7557687 | Magnetic core for electromagnetic apparatus and electromagnetic apparatus provided with magnetic core for electromagnetic apparatus To provide a magnetic core for an electromagnetic apparatus and an electromagnetic apparatus provided with the magnetic core capable of reducing magnetic resistance, a magnetic core for an electromagnetic apparatus, having a middle leg section, having a first outer ... | 07/07/2009 |
| 7508293 | Magnetic circuit for ignition coils or transformers A magnetic circuit for an ignition coil or a transformer, including an inner, essentially rod-shaped core and an outer core. The outer core includes a strip-shaped element of thickness, length and width, and is situated around the inner core in such a way that the s... | 03/24/2009 |
| 7504924 | Inductive device and method for manufacturing same An inductance element (1) comprises a core (2) having a multilayer body (6) composed of magnetic alloy thin ribbons (5) and an insulating coating layer (7) which covers the peripheral surface of the multilayer body without being bo... | 03/17/2009 |
| 7471183 | Transformer There is provided a joint structure of a wound iron core in which iron core characteristics can be enhanced by improving the distribution of magnetic flux within an iron core. A wound iron core is formed to provide a joining structure or a butt joining structure and... | 12/30/2008 |
| 7430796 | Method for winding the stator of a multiphase electric motor In a method for winding the stator of a multiphase electric motor a plurality of mutually spaced stator teeth are assigned to each phase, wherein all the teeth of the stator are wound without a break in the winding wire, and wherein the winding wire is taken via a c... | 10/07/2008 |
| 7405644 | Core assembly, in particular for an ignition coil of an internal combustion engine An ignition coil for an internal combustion engine includes a core assembly. The core assembly has a magnetically active core made of sheet-metal strips, a damping element and a sheath surrounding the core and the damping element. Different ways are described for im... | 07/29/2008 |
| 7403091 | Inductance component and manufacturing method thereof In an inductance component including coil and multi-layered magnetic body layer formed from first metal layer, first metal magnetic body layer, middle layer including copper oxide and second metal magnetic body layer, which are piled at least on one surface of base ... | 07/22/2008 |
| 7378036 | Ferrite material and electronic component using the same A ferrite material of the present invention is configured such that 0.05 to 1.0 wt % of bismuth oxide in terms of Bi2O3, 0.5 to 3.0 wt % of tin oxide in terms of SnO2, and 30 to 5000 wt ppm of chromium oxide in terms of Cr2 | 05/27/2008 |
| 7378774 | Laminated core of rotary electric machine A laminated core having a first number of magnetic poles, the first number being a natural number divided by two, of a rotary electric machine, includes a plurality of arc-shaped unit cores each having a second number of magnetic poles, the second number being a nat... | 05/27/2008 |
| 7355392 | Printed circuit card-based proximity sensor and associated method of detecting a proximity of an object A proximity sensor assembly includes a multilayer printed wiring board proximity sensor, the proximity sensor being operable as either a variable-reluctance sensor or an eddy current loss sensor. The proximity sensor includes a plurality of layers configured to form... | 04/08/2008 |
| 7353587 | Forming distributed gap magnetic cores A method of manufacturing a magnetic core includes providing a substrate with magnetically permeable material that has a first region and a second region near the first region, providing support to maintain a juxtaposition between the first region and the second reg... | 04/08/2008 |
| 7352269 | Method for making magnetic components with N-phase coupling, and related inductor structures Methods and structures for constructing a magnetic core of a coupled inductor. The method provides for constructing N-phase coupled inductors as both single and scalable magnetic structures, where N is an integer greater than 1. The method additionally describes how... | 04/01/2008 |
| 7342338 | Permanent magnet electric motor with reduced cogging torque A permanent magnet electric motor 10 comprises a rotor 30 provided with two stages of permanent magnets in the axial direction on an outer circumferential face of a rotor iron core, and having a shaft shifted by a stage skew angle θr in electrical ang... | 03/11/2008 |
| 7328498 | Method for producing the surface geometry of solenoids A method for producing a solenoid with a center limb and two outer pole shanks that have one pole surface each and one back resting so that it faces away from it. The back is first at least partially freely formed. The solenoid is then elastically tensioned towards ... | 02/12/2008 |
| 7322410 | Controllable production well packer An apparatus and method for operating an electrically powered device in a packer using the piping structure of the well as an electrical conductor for providing power and/or communications. The electrically powered device may comprise an electrically controllable va... | 01/29/2008 |
| 7304559 | Rotary transformer for transmission of electrical energy or information A device for efficient transmission of electrical energy and/or information is built in the manner of a rotary transformer. The cores of this device are made of ferromagnetic rings of a U-shaped cross section of soft iron, or of soft iron core stacks of annular or h... | 12/04/2007 |
| 7295092 | Gapped core structure for magnetic components A magnetic component includes a first monolithic core structure having a plurality of magnetic layers and at least one nonmagnetic layer separating one of the plurality of magnetic layers from another of the plurality of magnetic layers. A first opening extends thro... | 11/13/2007 |
| 7292127 | Transformer There is provided a joint structure of a wound iron core in which iron core characteristics can be enhanced by improving the distribution of magnetic flux within an iron core. A wound iron core is formed to provide a joining structure or a butt joining structure and... | 11/06/2007 |
| 7292128 | Gapped core structure for magnetic components A single piece core structure for magnetic components that is formed without utilizing insulating spacer materials and bonding materials. ... | 11/06/2007 |
| 7289013 | Bulk amorphous metal inductive device A bulk amorphous metal inductive device includes a magnetic core having at least one low-loss bulk ferromagnetic amorphous metal magnetic component forming a magnetic circuit having an air therein. The component has a plurality of similarly shaped layers of amorphou... | 10/30/2007 |
| 7259688 | Wireless reservoir production control A reservoir production control system includes a plurality of wells for producing a reservoir linked to a central computer over a downhole communication network and a surface communication network. Both the downhole and the surface communication networks are wireles... | 08/21/2007 |
| 7256677 | Transformer having a stacked core with a cruciform leg and a method of making the same The present invention is directed to a transformer having a stacked core, which includes upper and lower yokes and first and second outer legs. The core also includes one or more inner legs. Each of the upper and lower yokes is formed from a stack of plates and has ... | 08/14/2007 |
| 7253671 | Apparatus and method for compensating for clock drift in downhole drilling components A precise downhole clock that compensates for drift includes a prescaler configured to receive electrical pulses from an oscillator. The prescaler is configured to output a series of clock pulses. The prescaler outputs each clock pulse after counting a preloaded num... | 08/07/2007 |
| 7236076 | Electric component having a variable air gap effect An electric component having a variable air gap effect comprises two cores having a magnetic field air gap disposed at the connecting position of the two cores, and a coil wound around the cores and disposed at the installing position of the magnetic field air gap, ... | 06/26/2007 |
| 7221073 | Axial gap electronic motor An axial gap electronic motor includes a stator and a rotor disposed opposingly with a predetermined gap. In order to provide an easy assembling operation of the stator, the stator includes a plurality of pole members annularly connectable. The annular stator core i... | 05/22/2007 |
| 7213324 | Method and manufacturing stator coil structure for revolving field electrical machine A number of embodiments of rotating electrical machines and methods for winding them that provides a high space utilization and very effective winding with less likelihood of damage to the insulation of the wire of the winding during the winding process. The arrange... | 05/08/2007 |
| 7199696 | Transformer having a stacked core with a split leg and a method of making the same The present invention is directed to a transformer having a stacked core, which includes top and bottom yokes and first and second outer legs. The core also includes an inner leg that is formed from a pair of stacked plates, which abut each along a seam that extends... | 04/03/2007 |
| 7196448 | Stator structure A stator structure. A first stator part includes a first engaging portion. A second stator part includes a second engaging portion corresponding to the first engaging portion. The first and second stator parts are of the same material. When the first stator part is ... | 03/27/2007 |
| 7170386 | Inductor core for heatable godet roll An inductor core 10 is proposed for a heatable godet roll comprising a plurality of inductor core laminations 11 arranged radially in a star shape with radial sections 12 and respectively one outer axial section 13 and an inner axial sect... | 01/30/2007 |
| 7148601 | Built-up stator assembly A built-up stator assembly comprises a plurality of magnetic guide members and each of the magnetic guide members further comprises a frame arm, a rib and a magnetic pole part. The frame arm with two ends provides a joining part at the two ends respectively. The rib... | 12/12/2006 |
| 7148782 | Magnetic core for stationary electromagnetic devices An energizable magnetic core for use in an inductor or a transformer includes a plurality of legs extending from the back yoke. The back yoke is formed in a loop arranged to provide a magnetic circuit. Each of the plurality of legs have a first end adjacent to the b... | 12/12/2006 |
