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| Number | Title | Issue Date |
| 7148598 | Spoke permanent magnet rotors for electrical machines and methods of manufacturing same A rotor assembly for an electric motor includes a spoke permanent magnet rotor and a shaft connected thereto. The spoke permanent magnet rotor has an axis of rotation, permanent magnet material, and ferro-magnetic material. The permanent magnet material extends outw... | 12/12/2006 |
| 7148597 | Permanent magnet rotating electric machine A permanent magnet rotating electric machine uses no skewing under a predetermined current and voltage condition to prevent torque from decreasing and to decrease pulsation torque to make the machine less vibrating and less noisy. The permanent magnet rotating elect... | 12/12/2006 |
| 7116028 | Motor utilizing basic factor and having generator function A motor which has an improved energy efficiency, is excellent in practical use and has a generator function at the same time. The motor is provided with a basic factor 15 having working surfaces 55a and 55c on both sides thereof, r... | 10/03/2006 |
| 7026737 | Rotor for an electric machine, especially a synchronous machine, and synchronous machine with a transverse flux The invention relates to a rotor for an electric machine, especially a synchronous machine with transverse flux, especially a synchronous generator, especially a TFM rotor. The invention is characterized by the following features: a support element; a pole structure... | 04/11/2006 |
| 6967420 | Electrical machine having a rotor specially adapted to high speeds An electrical rotating machine having a rotor comprising a shaft made from non-magnetic material, a plurality of pole pieces made from magnetic material and surrounding the shaft, with permanent magnets fixed in receivers by wedges cooperating with the pole pieces t... | 11/22/2005 |
| 6967424 | Rotor assembly and stator assembly for an electrical machine The present invention relates to a rotor assembly for an electrical machine, comprising: a rotor body of generally cylindrical shape having a substantially cylindrical surface configured for facing an air-gap between the rotor assembly and a stator of the electrical... | 11/22/2005 |
| 6891295 | Flywheel magneto generator A flywheel magneto generator which comprises a rotor having a magnet attached to an outer circumferential side of a flywheel and a stator constructed by winding a generating coil around a core having a magnetic pole portion opposed to a magnetic pole of the rotor, w... | 05/10/2005 |
| 6674203 | Vehicle rotary electric machine In a stator of a vehicle rotary electric machine, a stator winding includes U-shaped conductor segments having a pair of straight portions disposed in a pair of slots spaced apart at a fixed pitch in layers. Each U-shaped conductor segment has a generally... | 01/06/2004 |
| 6664688 | Rotor for a motor To provide a rotor for a motor capable of effecting improved torque variation due to improvement in the induced voltage waveform and of effecting improved magnet torque in a permanent magnet type synchronous motor utilizing reluctance torque. A rotor 11 c... | 12/16/2003 |
| 6437474 | Rotor of synchronous motor A rotor for a synchronous motor includes two end plates and a number of laminated core members engaged on a shaft and secured together with a single fastener. The laminated core members have a number of radially arranged apertures for receiving a number o... | 08/20/2002 |
| 6369479 | Hybrid-type magnet and stepping motor including same A hybrid-type magnet includes an electromagnet having a U-shaped core made of a magnetic material. The core includes a core body having outer ends and a pair of opposing arms extending upwardly from the outer ends of the core body, wherein each opposing a... | 04/09/2002 |
| 6097127 | Permanent magnet direct current (PMDC) machine with integral reconfigurable winding control A permanent magnet direct current machine is provided. The rotor has permanent magnets acting as poles for feeding magnetic flux to the stator. The stator has a multiplicity of "slot paths". Each slot path has as many slots as there are poles on the rotor... | 08/01/2000 |
| 6087752 | Motor having permanent magnets received therein A motor having permanent magnets received therein includes a rotor having a plurality of circular sheet irons deposited in turn, a plurality pairs of magnet receiving slots formed through the deposited sheet irons at a predetermined angle toward the outer... | 07/11/2000 |
| 5894183 | Permanent magnet generator rotor A permanent magnet rotor for an electric generator or motor has a core lamination hub formed of a stack of generally round plates with peripheral slots for holding the first end of a rectangular magnet. Each magnet has an outer end which is held by a slot... | 04/13/1999 |
| 4918831 | Method of fabricating composite rotor laminations for use in reluctance, homopolar and permanent magnet machines In a homopolar, switched reluctance, or interior permanent magnet motor, formed rotor laminations are employed to reduce eddy current losses in the pole faces and body of the rotor. The homopolar and switched reluctance motor lamination is comprised of a ... | 04/24/1990 |
| 4916346 | Composite rotor lamination for use in reluctance hompolar, and permanent magnet machines In a homopolar, switched reluctance, or interior permanent magnet motor, formed rotor laminations are employed to reduce eddy current losses in the pole faces and body of the rotor. The homopolar and switched reluctance motor lamination is comprised of a ... | 04/10/1990 |
| 4126933 | Method for assembling a permanent magnet rotor A method for assembling a permanent magnet rotor by mounting the magnets and the appropriate electrical steel laminations between two retaining discs. The laminations and magnets are then forced into position by a pneumatic expansion tool. The retaining d... | 11/28/1978 |
