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| Number | Title | Issue Date |
| 7932658 | Interior permanent magnet motor including rotor with flux barriers An electric machine includes a stator, and a rotor positioned adjacent the stator and configured to rotate with respect to the stator. The rotor includes a plurality of laminations having an outside diameter and stacked in a stackwise direction. Each lamination incl... | 04/26/2011 |
| 7362025 | Internal permanent magnet rotor having improved configuration of magnetic flux barriers At each permanent magnet in a rotor of an IPM rotary electric machine, each of a pair of flux barriers respectively disposed adjoining circumferentially opposed side faces of the magnet is formed with a trench portion that extends farther from a circumferential face... | 04/22/2008 |
| 7285890 | Magnet retention on rotors Permanent magnets are mounted on a rotor of an electrical motor by an apparatus that keeps an adhesive bonding layer between the magnet and rotor in compression over wide variations in temperature and speed of rotation. The mechanical stresses on the magnets are con... | 10/23/2007 |
| 7053513 | Magnetic circuit structure for rotary electric machine A rotary electric machine includes inner and outer rotors each including permanent magnets, and a stator including stator coils, disposed between the inner and outer rotors. The inner rotor further includes outer surface portions serving as a yoke portion of an oute... | 05/30/2006 |
| 6969937 | Multiple, permanent-magnet rotor for a rotating electrical machine, and a method for producing same In order to allow a rotating electrical machine, which uses a permanent-magnet rotor with a flux-concentration construction for a rated power of more than 100 kW, to be assembled as easily as possible, two mutually adjacent half-yokes of two poles as well as magnets... | 11/29/2005 |
| 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 |
| 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 |
| 4531071 | Rotor assembly A rotor assembly for a rotary electric machine including a magnetic shaft provided with at least one pair of equiangularly spaced flats. Non-magnetic spacers abut the flats and a plurality of arcuate permanent magnet segments are disposed about the shaft ... | 07/23/1985 |
| 4480207 | Permanent magnet rotor and method of making same A permanent magnet rotor has a north and a south pole piece each separated into two sections by a central nonmagnetic insert to reduce the quadrature flux. The pole piece sections are welded to the central nonmagnetic insert, two nonmagnetic segments are ... | 10/30/1984 |
| 4464596 | Multi-section permanent magnet rotor A permanent magnet rotor uses a magnetic shaft having a rhomboidal cross section. Fastening means secure clamp pieces which in turn retain pole pieces and the permanent magnets.... | 08/07/1984 |
| 4417168 | Permanent magnet rotor for a dynamo electric machine A two-pole rotor of increased flux concentration factor employs two pole pieces of magnetic material which are separated from each other by non-magnetic segments. The pole pieces and non-magnetic segments are joined together to form a cylinder with an ape... | 11/22/1983 |
