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| Number | Title | Issue Date |
| 7855628 | Magnet pole for magnetic levitation vehicles A magnetic pole comprised of a core (301) and a winding (314) for magnetically levitated vehicles is described. According to the present invention, the winding (314) is comprised of at least two discs (315, 316) that consist of conductor ... | 12/21/2010 |
| 7541908 | Transformer A pair of flanges 16 are formed on both ends of a spool 14 of a bobbin 12, and an insulation layer 32 formed by heat curing an interlayer insulation prepreg tape 22 is formed on the external periphery of the spool 14. A prim... | 06/02/2009 |
| 7477127 | Electronic device having organic material based insulating layer and method for fabricating the same In an electronic device, insulating layers (24, 26 and 28) on metal conductors (23 and 27) situated inside the device are formed of insulating layers made of a novolac resin, and an insulating layer made of a polyimide resin is used as an... | 01/13/2009 |
| 7400224 | Device for electrical isolation, toroidal core choke, and method for producing the toroidal core choke A device for electrical isolation is suitable for installation in the core hole of a toroidal core. The device includes a center section that has a rotational axis, and branches that extend outwards and that are deformable in the rotational direction about the rotat... | 07/15/2008 |
| 7339790 | Halogen lamps with mains-to-low voltage drivers A halogen lamp includes a mains base and a converter operably connected to the mains base. The converter has a lamp socket, a toroid transformer, and a heat sink disposed within a center opening of the toroid transformer. A lamp is removably disposed in the lamp soc... | 03/04/2008 |
| 7299537 | Method of making an integrated inductor An inductor comprises a substrate comprising a semiconductor material, a first dielectric layer over the substrate, a magnetic layer over the first dielectric layer, a second dielectric layer over the magnetic layer, and a conductor over the second dielectric layer.... | 11/27/2007 |
| 7280027 | Toroidal core and method for producing the same An insulating device includes two or more webs extending radially outwards and a plurality of elastic tongues connected to an end of at least one of the two or more webs. At least one of the two or more webs has an elastically deformable spring element. The insulati... | 10/09/2007 |
| 7260883 | Method for forming a winding for a three-phase transformer A preferred embodiment of a three-phase transformer includes a first, a second, and a third winding leg, and a first, a second, and a third winding positioned around the respective first, second, and third winding legs. The first, second, and third windings each inc... | 08/28/2007 |
| 7257882 | Multilayer coil assembly and method of production Embodiments of the present invention provide a thin-film coil assembly. The coil assembly includes a substrate, at least two layers of conductive material on top of the substrate, and one layer of insulating material between the two layers of conductive material, wh... | 08/21/2007 |
| 7253714 | Power supply transformer with high efficiency A high-efficiency power supply transformer improved on its iron core which is a closed annular member made by continuous winding a silicon steel sheet and completed by sintering and fixing to keep directionality, after insulation processing with a heat shrinking wra... | 08/07/2007 |
| 7238404 | Thin sheet mica wedges with semi-conducting properties The present invention provides for thin sheet wedges that comprise a mica matrix impregnated with a conductive resin. The mica matrix is composed of mica flakes. The thin sheet wedge has a semi-conductive property of 500–500,000 ohms per square. In one embodiment ... | 07/03/2007 |
| 7216419 | Method of manufacturing a high-frequency coil device In a high-frequency coil device having small dispersion in coil inductance and suitable for use in GHz band and a method of manufacturing the high-frequency coil device, a spirally-shaped fine-pitch coil is embedded in the surface of a polyimide layer as a dielectri... | 05/15/2007 |
| 7201344 | Multilayer coil, winding method of same, and winding apparatus of same In a multilayer coil which winds “n” wire rods (4) (“n” is an integer number of two or more) in line around a winding core (2) having a cross section of a polygonal shape. An intersection portion (5) is formed on a face where feeding of ... | 04/10/2007 |
| 7194799 | Process for fabricating a high density multi-layer microcoil A high density multi-layer microcoil includes a substrate, a multi-layer coil winding, a magnetic core and a dry film photoresist structure. The multi-layer coil winding and the magnetic core are supported by the dry film photoresist structure. The fabrication proce... | 03/27/2007 |
| 7167074 | Integrated planar flyback transformer Method and apparatus are provided for fabricating a planar transformer assembly for use in an implantable medical device. The planar transformer assembly includes a board, a first core, and a second core. The board has a first side, a second side, and an embedded wi... | 01/23/2007 |
| 7160117 | High speed, high signal integrity electrical connectors An electrical connector may include a connector housing and a terminal tray. The terminal tray may include a tray body having a latch extending therefrom. The connector housing may define a latch receiving window. The latch and latch receiving window may be disposed... | 01/09/2007 |
| 7145080 | Off-set communications cable A cable includes an outer sleeve for offsetting an inner jacket from a central axis of the outer sleeve in order to reduce crosstalk between adjacent cables. In one embodiment, an inner surface of the outer sleeve includes a plurality of fingers of different length ... | 12/05/2006 |
| 7145116 | Induction heating coil An induction heating coil having little high-frequency loss and producing little hast is easily manufactured by covering a conductor with a first insulating material to form a wire, then bundling and twisting such wires to form a stranded wire, covering the outer su... | 12/05/2006 |
| 7142085 | Insulation and integrated heat sink for high frequency, low output voltage toroidal inductors and transformers Toroidal transformer and inductor configurations are described that allow for greater heat transfer away from internal device components. The inventive transformer allows for higher thermal and electrical efficiency, as well as for more efficient use of expensive co... | 11/28/2006 |
| 7113068 | Winding structure of inductor used in power factor correction circuit A winding structure of an inductor used in a power factor correction circuit is provided. The winding structure includes a ring-shaped core with a gap, a first coil and a second coil wound around the core. The negative end of the first coil and the positive end of t... | 09/26/2006 |
| 7108247 | Method and apparatus for lifting and/or conveying The invention relates to a method of operation of and apparatus for a lifting and/or conveying device (1), such as a crane, that comprises at least one cable (2) capable of being rolled (wound) onto or off a dispenser roll (3). To lengthen the s... | 09/19/2006 |
| 7095308 | Step-up transformer Open ends of a number of secondary windings are fixed by winding them around a film projection portion formed by cutting and raising insulating films provided between the layers of the secondary windings. This eliminates the requirement that a number of terminals on... | 08/22/2006 |
| 7075401 | Small-diameter ignition coil A small-diameter ignition coil includes a center core, a primary coil, a secondary coil, and a thin film tube. The primary and secondary coils are arranged on an outer circumferential side with respect to the center core. The thin film tube has a cylindrical shape. ... | 07/11/2006 |
| 7065122 | Wire-wound apparatus and high-voltage pulse generating circuit using wire-wound apparatus Electric field easing members (corona rings) for easing concentration of electric fields caused at edges of a core are disposed between the core and a winding to form a gap so to allow the presence of a cooling medium (insulating oil) between the top and bottom surf... | 06/20/2006 |
| 7064644 | Winding for a transformer or a coil and method for winding A winding for a transformer or a coil having a ribbon electrical conductor and an insulating material layer composed of ribbon insulation material wound jointly to form turns around a winding core. The individual turns of the winding have a predetermined winding ang... | 06/20/2006 |
| 7061362 | Coils for electrical machines A jig (10) is used to form a coil (50) for an electrical machine. A plurality of conductive wires (56), each covered in a heat-curable electrically insulated material, are wound around a bobbin (12). Each succeeding winding in contra-woun... | 06/13/2006 |
| 7023317 | Cellular transformers The winding of matrix transformers having multiple turn primary windings is made much easier, and the resulting transformer is much more consistent, if a “cellular” insert having a plurality of through holes is placed through each trough hole of the matrix trans... | 04/04/2006 |
| 7019429 | Method of applying a tube member in a stator slot in a rotating electrical machine A method for mounting a tube in a space having a shape corresponding to the shape of the tube. The tube is inserted into the space, pressurized with a hot pressure medium causing the tube to expand until the space is filled, then a cold pressure medium is substitute... | 03/28/2006 |
| 6995646 | Transformer with voltage regulating means A power or regulating transformer with voltage regulator includes regulating windings made of a flexible conductor having an electric field containing mechanism that forces the electric field due to the current in the winding to be contained within the flexible cond... | 02/07/2006 |
| 6995645 | Igniter transformer An igniter transformer includes a secondary coil and a primary coil which are closely coupled. A plurality of round single-core wires disposed substantially parallel to one another in a common plane are bonded side by side to form a flat multicore wire that is subst... | 02/07/2006 |
| 6988307 | Method of making an integrated inductor An inductor comprises a substrate comprising a semiconductor material, a first dielectric layer over the substrate, a magnetic layer over the first dielectric layer, a second dielectric layer over the magnetic layer, and a conductor over the second dielectric layer.... | 01/24/2006 |
| 6980076 | Electrical apparatus with synthetic fiber and binder reinforced cellulose insulation paper An electrical apparatus includes at least one conductor and an insulation paper surrounding at least part of the conductor. The insulation paper includes a wood pulp fiber, a synthetic fiber, and a binder material. The synthetic fiber is present at between approxima... | 12/27/2005 |
| 6972657 | Power converter and planar transformer therefor A planar transformer includes a primary winding surrounding a portion of a magnetic core. The primary winding is made up of a bundle of individually insulated conductors (wires) in a bundle, and the bundle is itself separately insulated as a whole. A secondary windi... | 12/06/2005 |
| 6961991 | Method of making an inductor coil unit including steps of pouring resin between frames A method of manufacturing a coil unit includes the first step of disposing a coil between a first frame and a second frame, the second step of pouring liquid resin into between the first frame and the second frame with the coil disposed therebetween, and the third s... | 11/08/2005 |
| 6950004 | Quadrilateral electromagnetic coil assembly Prior art electromagnetic coil technology in tattoo machines employs a round steel post to alternately repel and attract an armature bar retained by a spring, reciprocally moving a needle bar and attached needle groupings into and out of the skin in the act of tatto... | 09/27/2005 |
| 6946946 | Toroidal inductive devices and methods of making the same An inductive device comprises an electric winding component having a generally toroidal shape, and a plurality of discrete magnetic components at least partially embracing the electric winding component so as to complete a magnetic flux path and to form at least one... | 09/20/2005 |
| 6940468 | Transformers or inductors (“transductors”) and antennas manufactured from conductive loaded resin-based materials A low cost moldable transformer or trans-inductor core, referred to in this description as a transductor. Elements of the transductor core are formed of a conductive loaded resin-based material. The conductive loaded resin-based material comprises micron conductor f... | 09/06/2005 |
| 6933828 | Devices and methods for protecting windings around a sharp edged core 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 dia... | 08/23/2005 |
| 6930579 | Low voltage composite mold A transformer coil is produced by forming a sheet of composite material over a plurality of annular shaped support plates to form an inner layer. A coil is wound around the inner layer. An outer layer is formed by wrapping a sheet of composite material over the coil... | 08/16/2005 |
| 6914511 | Superconducting transformer A superconducting transformer includes two pairs of axially extending windings (1, 2, 3 and 4). The windings are each in the from of a right cylindrical solenoid having a circular cross-section which are substantially concentrically nested. Each windin... | 07/05/2005 |