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| Number | Title | Issue Date |
| 8183729 | Electrically powered device The electrically powered device is provided. The electrically powered device includes: multiple stators structured to respectively have electromagnetic coils and position sensors; a shaft fastened to the multiple stators; and multiple rotors structured to respective... | 05/22/2012 |
| 8138641 | Permanent-magnet rotary electric machine A permanent-magnet rotary electric machine preferably includes a stator and a rotor opposed thereto via an air gap. The stator includes a stator core having 4m (m is an integer equal to or larger than 2) main poles each having inductor teeth at a tip thereof. The ro... | 03/20/2012 |
| 8063528 | Counter-rotatable generator A counter-rotatable generator includes a generator stator concentric with concentric counter-rotatable radially inner pole and outer magnet rotors. The magnet rotor encircles the pole rotor and the pole rotor encircles the generator stator. A rotor air gap is dispos... | 11/22/2011 |
| 8030868 | Electric motor, power apparatus using the same, and self-propelled snow remover A electric motor is disclosed in which torque ripple is reduced. The electric motor includes a single motor shaft. Rotors are disposed so as to be mutually offset in phase, and the rotors are secured to the motor shaft. Stators are arranged so as to individually cor... | 10/04/2011 |
| 8004138 | Motor A motor is provided with: an inner rotor having inner permanent magnets arranged in a peripheral direction and an outer rotor having outer permanent magnets arranged in the peripheral direction, the mutual axes of rotation of the inner rotor and the outer rotor bein... | 08/23/2011 |
| 7990009 | Electric machine An electrical machine which has a moving part and a stationary part. The moving part is in the form of an inner rotor without windings, and the rotor which has at least two magnetic conductors, which are separated from one another axially such that impeller wheels a... | 08/02/2011 |
| 7982351 | Electrical machines Embodiments provide an electrical machine bearing first and second pluralities of permanent magnets having different number of pole pairs, a plurality of pole-pieces that enable the magnetic interaction between the pluralities of permanent magnets, and winding that ... | 07/19/2011 |
| 7982350 | Conical magnets and rotor-stator structures for electrodynamic machines Embodiments of the invention provide for conical magnets for rotors in electrodynamic machines, methods to design the same, and rotor-stator structures for electrodynamic machines. In various embodiments, a rotor-stator structure for electrodynamic machine can inclu... | 07/19/2011 |
| 7956504 | Composite electromechanical machines with gear mechanism Embodiments of the present invention include a composite electromechanical machine which can operate as a motor or a generator (including dynamo or alternator). In an aspect, the present composite electromechanical machine consists of at least two rotating elements ... | 06/07/2011 |
| 7944107 | Synchronous permanent magnet machine A synchronous permanent magnet machine for at least two rotation speeds has a single stator and at least two rotors. For each rotation speed there is provided a separate rotor with a different numbers of poles. The armature windings on the stator extend across all o... | 05/17/2011 |
| 7932659 | Superconducting device and axial-type superconducting motor A superconducting device includes a coil formed of a superconducting wire, an iron core to which the coil is attached, and a magnetic material arranged in a magnetic circuit and magnetized by magnetic flux. The magnetic circuit is generated by energization of the co... | 04/26/2011 |
| 7898134 | Brushless disk DC motor A brushless disk DC motor that exhibits high power density and light weight and is capable of power regeneration and reverse operation employs a flat circular non-ferrous stator plate having a plurality of electromagnets mounted in a ring pattern on an inner face th... | 03/01/2011 |
| 7884518 | Electrical synchronous machine An electrical synchronous machine, in particular for use as a drive machine in motor vehicle applications. A stator has an electrical winding arrangement for generating a rotating field. A rotor has magnetic flux generating means for generating a rotor flux with whi... | 02/08/2011 |
| 7876018 | Synchronous reluctance motor and compressor having the same A synchronous reluctance motor comprises a stator and a rotor, the rotor comprising: a rotation shaft; a first core having a shaft hole for inserting the rotation shaft at a center thereof, and having a plurality of first flux barrier groups arranged along a circumf... | 01/25/2011 |
| 7800256 | Electric machine A linear or rotating electric synchronous machine includes a reluctance-secondary part, and a primary part, provided with a coil and permanent magnets. The primary part has teeth, with each tooth surrounded by a coil defining a coil axis. Arranged in each tooth is a... | 09/21/2010 |
| 7772733 | Flat electrical generator An electrical generator includes a rotary disk that is made of plastic injection molding in which a plurality of coils each having an exposed contact is embedded. Two stationary disks are arranged on opposite sides of the rotary disk and each has an inside surface t... | 08/10/2010 |
| 7737591 | Coaxial twin variable field permanent magnetic dynamoelectric machine A coaxial twin variable field permanent magnetic dynamoelectric machine comprising first and second stators displaced from each other and first and second permanent magnet rotors. The rotors comprising hydraulic actuators mounted within the rotors for axially displa... | 06/15/2010 |
| 7728478 | Electrodynamic machine An electrodynamic machine (10) comprising a first rotor (13) and a second rotor (15). The first and second rotors (13, 15) are adapted to rotate relative to each other, preferably in opposite directions. The electrodynamic machine (10 | 06/01/2010 |
| 7679249 | Contra rotating generator Disclosed herein is an apparatus of a contra rotating generator. The contra rotating generator comprises a cylindrical armature supported on an inner shaft. The inner shaft rotates in a first direction. A cylindrical magnetic field rotor is supported on an outer sha... | 03/16/2010 |
| 7671501 | Electrical machine with torque limitation An electrical machine with torque limitation which is only slightly larger structurally than an identical machine without torque limitation and is thus as compact as possible has a stator with windings and a rotor supported movably relative to the stator, recesses d... | 03/02/2010 |
| 7649292 | Rotating electrical machine and hybrid drive unit provided with the same An induction machine includes a stator provided with stator windings and a first rotor provided with first rotor windings, and generates an induction current in one of the stator windings and the first rotor windings by a rotating magnetic field generated in the oth... | 01/19/2010 |
| 7642683 | Self-regulating permanent magnet device A self-regulating permanent magnet device has a first rotor segment and second rotor segment, each supporting a set of permanent magnets, wherein the position of the second rotor segment relative to the first rotor segment is modified based on the speed of the self-... | 01/05/2010 |
| 7642684 | Nested variable field dynamoelectric machine A dynamoelectric machine comprises a first rotor shaft, a second rotor shaft and a central element. The first rotor shaft rotates about a central axis of the machine and has a first magnetic drive element disposed about an outer circumference of the first rotor shaf... | 01/05/2010 |
| 7626299 | Motor A motor includes a stator with an annular stator yoke, a stator core having a plurality of inner and outer teeth projecting from the stator yoke toward inside and outside respectively, a plurality of coils wound on the stator core, and an inner rotor and an outer ro... | 12/01/2009 |
| 7626298 | Electric motor and method of driving the same This electric motor of the present invention is formed by an inner circumferential side rotor, an outer circumferential side rotor, and a planetary gear mechanism that are placed coaxially. The planetary gear mechanism is a single pinion type that includes a first p... | 12/01/2009 |
| 7608962 | Electrical machine and method for setting the field and armature of a permanently excited electrical machine Electrical machine, having a stator which bears a winding and having a rotatable rotor, situated at a distance from the stator via an air gap, which includes at least two coaxial rotor sections which are rotatable relative to one another, in which each rotor section... | 10/27/2009 |
| 7564156 | Vehicle-use tandem electric rotating machine The vehicle-use tandem electric rotating machine includes a first stator-rotor pair, a second stator-rotor pair, and a controller individually controlling a first field current flowing into a first field coil of the first stator-rotor pair and a second field current... | 07/21/2009 |
| 7554237 | Centrifugal-effect vibration generator having coaxial contrarotating rotors A device for generating forces that are variable and controllable in amplitude, in direction, and in frequency, the device includes two unbalanced rotors (18, 20, 35 to 38) mounted coaxially in a casing (11). The device further includes electrom... | 06/30/2009 |
| 7548005 | Electric motor having improved relative phase control This electric motor includes first permanent magnets secured integrally to an outer periphery side rotor and second permanent magnets secured integrally to an inner periphery side rotor. The first permanent magnets and the second permanent magnets are arranged so as... | 06/16/2009 |
| 7535143 | Electromagnetic coupler An electromagnetic coupler for a motor vehicle. The coupler includes a first electric machine having an axis and including a first stator bearing a first coil, an input rotor and a first part of an output rotor, and a second electric machine including a second stato... | 05/19/2009 |
| 7511395 | Hybrid induction motor A hybrid induction motor comprises a stator fixedly installed in a casing, an induction rotor rotatably inserted into a center of the stator and having a shaft at a center thereof, a first synchronous rotor slid in a longitudinal direction of the shaft between the s... | 03/31/2009 |
| 7466053 | Dual-rotor electric traction motor An inner rotor (21) is arranged as a motor field, including permanent magnets (25) embedded in an inner rotor core (24) and an inner rotor shaft (26) coupled with the inner rotor core. An outer rotor (22) is arranged as a motor arm... | 12/16/2008 |
| 7456538 | Reaction balanced rotary drive mechanism A rotary drive mechanism is disclosed comprising a housing (10), a first motor (12) having a first rotor (38) and a first stator (32) connected to the housing and a second motor (50) having a second rotor (52) and a second s... | 11/25/2008 |
| 7439644 | Hybrid induction motor A hybrid induction motor comprises a stator fixedly installed in a casing, an induction rotor rotatably inserted into a center of the stator and having a shaft at a center thereof, a first synchronous rotor installed between the stator and the induction rotor in a c... | 10/21/2008 |
| 7429802 | Vehicle-use generator The vehicle-use generator includes a first rotor core having a first field coil wound therearound, a second rotor core having a second field coil wound therearound, a rotating shaft belt-driven by a vehicle engine, the first and second rotor cores being mounted in t... | 09/30/2008 |
| 7427845 | Segmented switched reluctance electric machine with interdigitated disk-type rotor and stator construction The present invention relates to a unipolar current electrical machine operable as a switched reluctance motor, comprising a motor structure and a control unit. The motor structure comprises a plurality of disk-shaped annular stator elements stacked and spaced equid... | 09/23/2008 |
| 7420313 | Tandem type rotary generator generating two voltages A tandem type rotary generator has a rotary shaft, and two power generating sections disposed adjacent to each other along an axial direction. Each power generating section has a Lundell type rotor core fixed to the rotary shaft, a field coil wound on the rotor core... | 09/02/2008 |
| 7417355 | Vehicular tandem type rotary electric machine A vehicular tandem type rotary electric machine is disclosed having first and second stator cores 23, 33 having first and second circumferentially spaced slots to accommodate therein first and second stator coils 24, 34, respectively, and first and sec... | 08/26/2008 |
| 7400077 | Electric motor having multiple armatures An electric motor that includes a housing, a rotatable axle, a first field armature, which is disposed substantially around the axle and secured to the axle, and which includes a plurality of first field magnets spaced around the first field armature, a second field... | 07/15/2008 |
| 7397156 | Tandem rotary electric machine A tandem rotary electric machine for vehicles is equipped with a primary rotary electric machine and a secondary rotary electric machine arranged in tandem mechanism, namely, of a dual stator-rotor pair mechanism. In the tandem rotary electric machine, a connection ... | 07/08/2008 |
