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| Number | Title | Issue Date |
| 8138877 | Magnetic circuit with wound magnetic core Magnetic circuit comprising a gap bridging element made of a non-magnetic metal and a wound magnetic core comprising a plurality of stacked concentric ring layers of magnetic material having a high magnetic permeability. The magnetic core has a gap extending through... | 03/20/2012 |
| 8089334 | Cast-coil inductor An inductor device is described. The inductor device includes a core comprising two core sections, at least one gap defined between the two core sections, and at least one cast coil and fringe shield assembly. The at least one cast coil and fringe shield assembly in... | 01/03/2012 |
| 7990246 | Foil winding pulse transformer A pulse transformer arrangement (100) is built from an uncut pulse transformer core (110) and at least one foil winding (120-A, 120-B) (each) comprising multiple insulated conducting strips arranged around the core and ending in foil wind... | 08/02/2011 |
| 7362201 | Inductance device and manufacturing method thereof An inductance device has a hollow center coil around which a conducting wire is wound so that a hollow portion is formed along a center axis line of the hollow center coil, a filler which is filled into the hollow portion of the hollow center coil, and includes magn... | 04/22/2008 |
| 7358844 | Current transformer core and method for producing a current transformer core A current transformer core has a ratio of the core outside diameter Da to the core inside diameter Di of | 04/15/2008 |
| 7343670 | Method of manufacturing transverse non-cylindrical gradient coils The present invention relates to a transverse non-cylindrical gradient coil, having at least one divergent section, and to production methods for such non-cylindrical gradient coils having at least one divergent section having the following steps of production of a ... | 03/18/2008 |
| 7330096 | Fault current limiter A fault current limiter (FCL) comprises: an air core flat clock spiral inductor comprising wound electrically conductive material and insulated turns; and two terminations configured for attaching the spiral inductor in series with a power carrying conductor. ... | 02/12/2008 |
| 7307504 | Current transformer, circuit interrupter including the same, and method of manufacturing the same A current transformer includes a CT core having a central opening, a height, a width, inner and outer radii, and a secondary winding disposed about the CT core. The CT core is formed from a winding of an elongated length of taped steel having a reluctance and a widt... | 12/11/2007 |
| 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 |
| 7227441 | Precision Rogowski coil and method for manufacturing same An improved Rogowski coil is formed on a toroidal core made of a thermoplastic or other moldable material, the core having a preferably continuous groove or grooves extending around the core. The grooves correspond in size to magnet wire which registers within the g... | 06/05/2007 |
| 7224096 | Rotatable assemblies having chemically bonded lamination stacks A rotor assembly or other rotating device having a stack of laminations or laminates that are chemically bonded together. Chemical bond of the laminates may have a strength that approaches the strength of the material of metal laminates. Chemical bonds may be effect... | 05/29/2007 |
| 7057489 | Segmented transformer core A transformer core comprises a plurality of segments of amorphous metal strips. Each of the segments comprises at least one packet of the strips. The packet comprises a plurality of groups of cut amorphous metal strips arranged in a step-lap joint pattern. Packets t... | 06/06/2006 |
| 7048875 | High oleic acid oil compositions and methods of making and electrical insulation fluids and devices comprising the same High oleic acid triglyceride compositions that comprise fatty acid components of at least 75% oleic acid, less than 10% diunsaturated fatty acid component; less than 3% triunsaturated fatty acid component; and less than 8% saturated fatty acid component; and having ... | 05/23/2006 |
| 7049722 | Motor core construction An electrical machine has a core that includes stranded magnetically permeable material. The core is elongated to thereby define a lengthwise direction and a profile that is transverse to the lengthwise direction. Coils are wound about the core profile and sequentia... | 05/23/2006 |
| 7048809 | Magnetic implement having a linear BH loop Magnetic powder having a large coercivity, Hc, is consolidated with a non-magnetic binder to form a magnetic implement having desired dimension and shape. The magnetic implement exhibits a linear B-H loop and low magnetic loss. It is capable of operating ... | 05/23/2006 |
| 7011718 | Bulk stamped amorphous metal magnetic component A bulk amorphous metal magnetic component has a plurality of laminations of ferromagnetic amorphous metal strips adhered together to form a generally three-dimensional part having the shape of a polyhedron. The component is formed by stamping, stacking and bonding. ... | 03/14/2006 |
| 6937130 | Magnetic field production system, and configuration for wire-free supply of a large number of sensors and/or actuators using a magnetic field production system A magnetic field production system is proposed and has a two-dimensional winding configuration with two windings. The windings are disposed essentially orthogonally with respect to one another and enclose a machine or system. The windings have winding axes that are ... | 08/30/2005 |
| 6930581 | Current transformer having an amorphous fe-based core A magnetic core has a toroidal configuration, formed by winding an iron-based amorphous metal ribbon. Thereafter the core is heat-treated to achieve a linear B-H characteristic. Advantageously, the linear B-H characteristic does not change with the level of magnetic... | 08/16/2005 |
| 6921886 | Induction seaming tapes, systems and methods The present invention pertains to novel tapes, tools and seaming systems for creating seams of rolled goods, especially carpeting, using induction heating. The present invention also provides improved seaming tapes for use in resistive heating methods. ... | 07/26/2005 |
| 6873236 | Fault current limiter A fault current limiter (FCL) comprises: an air core flat clock spiral inductor comprising wound electrically conductive material and insulated turns; and two terminations configured for attaching the spiral inductor in series with a power carrying conductor. ... | 03/29/2005 |
| 6816054 | Silicon steel core for transformers or choke coils A silicon steel core for transformers or choke coils includes at least one silicon steel sheet core which has at least two sets of silicon steel sheets that have respectively a magnetic flux section of a different length such that when two sets of the silicon steel ... | 11/09/2004 |
| 6809620 | Transformer core A transformer or inductor core of magnetic material has three legs (6, 8, 10) interconnected by yokes. The core comprises loops (12, 14, 16) of wires and/or strips of magnetic material, wherein each of the loops makes up part of two of the legs. Loops ... | 10/26/2004 |
| 6765467 | Core support assembly for large wound transformer cores Transformer cores, especially those of wound or laminated annealed amorphous metals which include support assemblies are disclosed. Methods for their manufacture, and their use in assembled transformers are also disclosed. ... | 07/20/2004 |
| 6734778 | Module for matrix transformers having a four turn secondary winding Four metal foil windings can be bonded to the inside of a magnetic core, each in a 90 degree helix. Very simple direct and straight connections can connect the windings to the windings of another similar core in a flat transformer module with no crossovers or overla... | 05/11/2004 |
| 6717372 | Multi-lamp driving system A multi-lamp system for driving a lamp set having a first lamp and a second lamp comprises a driving circuit for converting a DC signal to an AC signal, a transformer having a primary side coupled to the driving circuit and a secondary side for outputting the AC pow... | 04/06/2004 |
| 6683524 | Transformer core A transformer core comprises at least one leg and at least one yoke part, wherein the cross section of the leg or the legs regularly multi-edged with more than four edges. The core is made up of rings rolled from strips of constant width, whereby good ele... | 01/27/2004 |
| 6597272 | Transformer having stabilized power output A transformer includes a ferrite base plate having a chamber for receiving a winding and one or more further windings which may be coupled to a ground. The windings are electrically coupled together, and separated from each other by partitions. An insulat... | 07/22/2003 |
| 6580347 | Magnetic core that is suitable for use in a current transformer, method for the production of a magnetic core and current transformer with a magnetic core Magnetic cores including coiled amorphous ferromagnetic alloy strips are addressed. The composition of the alloy essentially corresponds to the formula Coa (Fe1-x Mnx)b Nic Xd Sic ... | 06/17/2003 |
| 6539611 | Method of manufacturing a gradient coil The present invention aims to implement a pair of gradient coils low in magnetizing force with respect to pole pieces. Upon manufacturing a pair of gradient coils each of which produces gradient magnetic fields by currents that flow through a plurality of... | 04/01/2003 |
| 6535099 | Cores and coils for electrical transformers The present invention relates to cores and coils for electrical transformers in which lateral walls of either Wescore or toroidal type cores are manufactured by winding strips of different heights or only one strip whose width reduces gradually, so that t... | 03/18/2003 |
| 6531946 | Low noise and low loss reactor A wound and laminated iron core is formed by winding a soft magnetic thin strip into a circular ring shape or elliptical ring shape. A coil is then wound around almost an entire outer periphery of the ring of wound and laminated iron core. A cross section... | 03/11/2003 |
| 6507262 | Magnetic core that is suitable for use in a current transformer, method for the production of a magnetic core and current transformer with a magnetic core Magnetic cores including coiled amorphous ferromagnetic alloy strips in which at least fifty percent of the volume contains fine crystalline particles with an average particle size of 100 nm or less are addressed. The composition of the alloy essentially ... | 01/14/2003 |
| 6498554 | Auxiliary wiring structure for stabilizer An auxiliary wiring structure for stabilizer which includes a ferrite core and a separator. The ferrite core is assembled by annular silicon sheets and has a slot formed at a selected location. The separator is clamped in the slot and enables wiring for a... | 12/24/2002 |
| 6480084 | Inductance element and manufacturing method thereof, and snubber using thereof An inductance element comprises a coil having a hollow portion opened at both ends and provided with a winding of which number of turns (N) per length 10 mm is 20 or more and 500 or less, and a core having a single layer or a plurality of layers of magnet... | 11/12/2002 |
| 6474322 | Ignition device for internal combustion engine The invention provides an ignition device of a cylindrical shape for an internal combustion engine, in which device it is possible to improves a productivity of a side core and a center core and to improve the efficiency of converting a magnetic flux toge... | 11/05/2002 |
| 6457464 | High pulse rate spark ignition system A spark ignition system for igniting fuel in an internal combustion engine is described. The spark ignition system includes a magnetic core-coil assembly having a ferromagnetic amorphous metal magnetic core and driver electronics. The core-coil assembly a... | 10/01/2002 |
| 6411188 | Amorphous metal transformer having a generally rectangular coil 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 secti... | 06/25/2002 |
| 6407655 | Wound core for toroidal transformer A wound core for a toroidal transformer has an improved shape, for example, circular or elliptic longitudinal ends in section, to properly attach a coil (toroidal winding) to the wound core. Therefore, the wound core allows a toroidal transformer that emp... | 06/18/2002 |
| 6388549 | Magnet core A magnet core for current sensors composed of a soft-magnetic alloy is disclosed which comprises at least two bent or buckled alloy band sections. A magnet core is also described with a primary leg and a secondary leg, whereby the secondary leg is formed ... | 05/14/2002 |
| 6388380 | Electric discharge lamp lighting unit An electric discharge lamp lighting device wherein a high voltage generating transformer 10 comprises a secondary coil 13 wound on an outer side of a laminated core 12 disposed in the center of a bobbin 11 and a primary coil 14 wound on an outer side of s... | 05/14/2002 |
