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| Number | Title | Issue Date |
| 8115473 | Optical voltage transformer An optical voltage transformer is connected with an external electric device and includes a primary electrode to which a measured voltage is applied by the external electric device, a first secondary electrode provided oppositely to the primary electrode, an insulat... | 02/14/2012 |
| 8080908 | Cooling structure for rotor core in electric rotating machine A rotor for an electric rotating machine includes d-axis through holes located on respective d-axes, hollow shafts formed in both axial sides of a rotating shaft not inserted into a rotor core, presser plates mounted on both axial ends of the rotor core, cooling gro... | 12/20/2011 |
| 7804216 | Permanent-magnet reluctance electrical rotary machine For an electrical reluctance rotary machine, a stator has a winding as an armature, and a rotor has permanent magnet implanting slots provided in a rotor core at lateral sides magnetic poles configured to produce reluctance torque along directions of magnetic flux p... | 09/28/2010 |
| 7705503 | Rotating electrical machine Included are a ring-shaped stator and a ring-shaped rotor arranged inside the stator; the stator includes a stator core with armature windings; the rotor includes a rotor core in which a plurality of permanent magnets are inserted and cooling holes are formed, a coo... | 04/27/2010 |
| 7327057 | Neutral-point terminal device for dynamoelectric machine A neutral-point terminal device for use with a neutral point side bundle of wires in a polyphase winding of a dynamoelectric machine includes a metal sleeve and an insulating cap covering the metal sleeve. The metal sleeve is covered by the insulating cap so that di... | 02/05/2008 |
| 7170209 | Rotor for reluctance type rotating machine A rotor for a reluctance type rotating machine includes a rotor core formed by stacking a number of annular core materials each of which includes magnetic concave and convex portions. The rotor core has two keys which are formed at two positions on an inner circumfe... | 01/30/2007 |
| 7057322 | Rotor for reluctance type rotating machine A rotor for a reluctance type rotating machine includes a rotor core formed by stacking a number of annular core materials each of which includes magnetic concave and convex portions alternately formed on an outer circumference thereof and a central through hole, th... | 06/06/2006 |
| 6794784 | Permanent magnet reluctance motor with embedded permanent magnet holes Permanent magnets are arranged to be supported by the provision of permanent magnet position-locating projections (12) in permanent magnet embedding holes (5). By optimizing the shape of thin-wall regions (18) and (19) within rotor core (... | 09/21/2004 |
