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| Number | Title | Issue Date |
| 8106560 | Stiffness of brushless motor including stator core and disk drive A brushless motor is provided. A stator core has a plurality of teeth extending radially from an annular portion of the stator core. The number of the teeth is an integral multiple of the number of coil-drive phases. Coil relief holes for allowing coils to enter are... | 01/31/2012 |
| 8080916 | Direct current motor A direct current motor with brushes in which an armature is provided with a rotating shaft that is supported by a yoke housing, an armature core that is fitted and fixed to a rotating shaft from the outer side, and a commutator that is provided on the rotating shaft... | 12/20/2011 |
| 8058764 | Winding former for a saddle coil winding A winding former with a winding support between a first plate and a second plate for a saddle coil winding made up from a thin layer HTSC, which is destined for a cylindrical armature of an electrical machine, and which has two longitudinal legs parallel to the arma... | 11/15/2011 |
| 7990013 | Slotless motor A stator coil of a slotless motor is disclosed in which the stator coil is formed in such a manner that respective both distal ends of two unit coil bodies, each unit coil body arranged to face each other, are respectively coupled to form a plurality of circular coi... | 08/02/2011 |
| 7948142 | Stator for rotary electric machine and method of manufacturing the stator A rotor provided in rotary electric machines comprises a stator core having a radial direction and slots provided with bottomed openings directed in the radial direction. The rotor also comprises a stator coil comprising slot accommodation portions being accommodate... | 05/24/2011 |
| 7847464 | Armature of rotary electric machine and method for producing same The object of the invention is to provide an armature which is in good rotational balance, where the total number of the coils to be disposed in the slots of the rotary electric machine can be freely set when winding coils on the armature core. Coils are wound on an... | 12/07/2010 |
| 7812497 | Armature, dynamo-electric machine and manufacturing method of armature A total number of windings in an armature is an even number. The windings are divided into a first winding group and a second winding group. The windings of the first winding group are arranged one after another at generally equal angular intervals without overlappi... | 10/12/2010 |
| 7781933 | Winding arrangement for rotating electrical machine The present invention is intended to provide a winding arrangement of single star connection for a rotating electrical machine, capable of enhancing insulation performance in coils of the same phase. In such winding arrangement, a first coil U1 to a sixth coi... | 08/24/2010 |
| 7723890 | Electric motors An electric motor includes an armature core, a commutator including a plurality of commutator segments, a neck disposed between the armature core and the commutator, and a plurality of wires each connected between two adjacent commutator segments and wound around th... | 05/25/2010 |
| 7382071 | Rotating electric machine A variable-speed rotating electric machine includes at least two armatures having respective armature coils for multiple phases, and a rotor having permanent magnets. The armatures are arranged concentrically with each other in such a manner that electrical angular ... | 06/03/2008 |
| 7368842 | Armature windings and dynamo-electric machine using the same An armature winding includes a plurality of strand groups each having strands transposed and bound in at least two rows and multiple tiers, and a main insulator for covering the strand group. The strands belonging to a strand group on one side of a central strand gr... | 05/06/2008 |
| 7348703 | Monopole field electric motor-generator with switchable coil configuration A pair of stators produce a magnetic field within a space between them a ferromagnetic toroidal rotor is rotationally mounted within the magnetic field. A plurality of windings are wound radially on the rotor and each winding provides a plurality of coils. Each of c... | 03/25/2008 |
| 7312551 | Coil for a dynamo electric machine A coil (20) for a dynamo electric machine, particularly for the stator (33) of a hydro-generator, includes a plurality of coil rods (22, 24), running in the axial direction in a sheet metal package, whose rod ends (23, 23′; 25, 25′), ... | 12/25/2007 |
| 7305752 | Method for fabricating an inductive coil A method of fabricating an inductive coil having inner and outer winding portions formed from one or more metal sheets. The method includes wrapping a fiber strand around an outer surface of the inner winding portion, positioning the outer winding portion around the... | 12/11/2007 |
| 7285889 | Pulsed-inertial electric motor The invention relates to electric motors, particularly to low-voltage gearless commutator motors, and can be used as motor-wheels in transportation vehicles and in other technologies. The aim of the present invention is to provide an electric motor with increased pe... | 10/23/2007 |
| 7235906 | Magnetic bearing using displacement winding techniques The present invention provides a linear, rotary spherical motor with an integrated magnetic bearing. The motor can be a toothless permanent magnet, BLDC design composed of a permanent magnet rotor and a Zigzag stator winding containing at least two-phase windings, w... | 06/26/2007 |
| 7230358 | Electrical resonance circuits for high efficiency direct current motors Practically ideal electrical resonance is employed to soley provide armature power, and stator power if desired, to run DC motors. A practically ideal parallel resonant tank circuit (PIPRC) is used wherein the quotient of the “tank current” divided by the “lin... | 06/12/2007 |
| 7155811 | Method for manufacturing an armature of an electric motor An armature for a brush commutated electric motor having a distributed coil winding arrangement for reducing brush arcing and electromagnetic interference (EMI). The winding pattern involves segmenting each coil into first and second subcoil portions with differing ... | 01/02/2007 |
| 7075207 | Stator of brushless direct current motor A stator (1) includes a core member (10) having a central portion (12) with an even number of pole members (14–17) extending radially and outwardly from the central portion, a winding having a same even number of winding portions (20... | 07/11/2006 |
| 6981308 | Support members inside stator slots of a rotating electric machine and method of mounting these support members A rotating electric machine (1) has a rotor, a stator (2), and stator windings (3, 4). The windings (3, 4) include high voltage cable drawn through slots (5, 6) in the stator (2). Support members (8) are arranged insi... | 01/03/2006 |
| 6975054 | Electric motor An electric motor includes a stator which carries permanent magnets, and a rotor which carries electromagnets. A particular arrangement of connecting up the windings of the electromagnets to the distributing collector and the selection of the ratio of stator magnets... | 12/13/2005 |
| 6965183 | Architecture for electric machine The invention includes an electric machine having a rotor, stator and at least one winding in the stator adapted to conduct a current, and a secondary winding, electrically isolated from the first winding and inductively coupled to the first winding, which may be us... | 11/15/2005 |
| 6958561 | Stator winding structure of a motor or a generator A stator winding structure of a motor or a generator includes plural separate different-shaped rod conductors combined to form a collective winding structure to take the place of a conventional winding structure which has a coil wire wound continuously. The differen... | 10/25/2005 |
| 6956313 | Method and apparatus for reducing hot spot temperatures on stacked field windings A method and apparatus for a generator coil includes a plurality of stacked windings in a rotor where individual turns are stacked in parallel sided radial slots in the rotor. Each successive turn has the same width substantially corresponding to a constant width of... | 10/18/2005 |
| 6936947 | Turbo generator plant with a high voltage electric generator In a plant containing a turbo-generator the magnetic circuit of the turbo-generator is included in an electric generator which directly supplies a high supply voltage of 20-800 kV, preferably higher than 36 kV. The insulation of the generator is built up of a cable ... | 08/30/2005 |
| 6936948 | Electric machine having an integrally continuous stator winding and stator slot bridges The invention includes an electric machine having a rotor, stator and at least one winding in the stator adapted to conduct a current, and a secondary winding, electrically isolated from the first winding and inductively coupled to the first winding, which may be us... | 08/30/2005 |
| 6930426 | Alternator stator having a multiple filar construction to improve convective cooling A stator for a dynamoelectric machine improves the cooling of the stator winding without increasing the size of the stator winding or the entire stator. The stator is of a unique construction wherein the size, and more specifically the cross sectional area or volume... | 08/16/2005 |
| 6911759 | Stator coil assembly for superconducting rotating machines A stator for use in a rotating machine includes a first conductor; and a second conductor wound, in-hand, over the first conductor and along a longitudinal axis of the stator. The second conductor is electrically isolated from the first conductor along the length of... | 06/28/2005 |
| 6897593 | Armature for an actuator An armature for an actuator for applying vibration to a body along an axis, the armature having at least two parallel wound helical windings on the axis, and a terminal arrangement connected to the ends of the windings for selective connection of the windings to two... | 05/24/2005 |
| 6894416 | Hydro-generator plant The magnetic circuit of a generator in a hydro-generator plant is arranged to directly supply a high supply voltage of 20-800 kV, preferably higher than 36 kV. The generator is provided with solid insulation and its winding includes a cable (6) comprising one... | 05/17/2005 |
| 6882076 | Rotary electric machine stator and method of manufacturing the same In a rotary electric machine stator, a stator coil is formed of plural U-shaped conductor segments. Each of the conductor segments has a U-shaped turn portion disposed at one end of a stator core to form one of said coil ends, a pair of in-slot portion extending fro... | 04/19/2005 |
| 6873085 | Brushless motor A brushless motor with a rotor having a magnet and a magnetic return, the magnet and magnetic return being arranged to form a gap therebetween, and a stator having a coil disposed in the gap. ... | 03/29/2005 |
| 6864613 | Armature for an electromotive device An inductive coil for an electromotive device includes a pair of concentric conductive sheet metal winding portions each comprising a plurality of axially extending conductive bands each being separated from an adjacent conductive band by a space, each of the conduc... | 03/08/2005 |
| 6844649 | Armature for a dynamo-electric machine having offsetting and overlapping coils An armature includes a plurality of equalizing connectors for permanently electrically connecting pairs of commutator segments that should have the same electric potential, so that each of the pairs of the commutator segments that should have the same electric poten... | 01/18/2005 |
| 6831388 | Synchronous compensator plant The magnetic circuit of synchronous compensator plant is included in an electric machine which is directly connected to a high supply voltage of 20-800 kV, preferably higher than 36 kV. The electric machine is provided with solid insulation and its winding(s) is/are... | 12/14/2004 |
| 6822363 | Electromagnetic device An electromagnetic device comprises a magnetic field generating electrical circuit including a winding (1) having at least one electrical conductor (2). The winding comprises a solid insulation (4) surrounded by outer and inner layers (3, 5 | 11/23/2004 |
| 6812610 | Rotary electric machine, linear motor and stator thereof One slot arranged between two slots containing a first armature winding contains a second armature winding for a phase different from a phase of the first armature winding; one slot arranged between the two slots containing the first armature winding contains a thir... | 11/02/2004 |
| 6800980 | Multi-pole commutator motor comprising bridge conductors The invention relates to a multipole commutator motor (14) having at least four stator poles (16-19) and having armature coils (31-42) that work together with these stator poles and that, for the supply of power, are each connected electrically ... | 10/05/2004 |
| 6798107 | Rotating electric machines with magnetic circuit for high voltage and method for manufacturing the same A rotating electric machine for direct connection to all types of high-voltage networks, in which the magnetic circuit adapted for high voltage comprises a rotor, stator and windings. The winding comprising a conductor surrounded by a solid insulation system. The in... | 09/28/2004 |
| 6784586 | Hybrid alternator with an axial end retainer for permanent magnets The invention relates to a rotating electric machine, especially an alternator or alternator/starter for motor vehicles, including a stator surrounding a rotor (10) equipped with a pack of metal plates, a gap between the stator and the rotor, permanent magnet... | 08/31/2004 |
