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| Number | Title | Issue Date |
| 7973444 | Electric machine and rotor for the same Disclosed herein is an electric machine rotor. The rotor includes, a rotatable shaft, a plurality of pole segments attached to the shaft, and a plurality of magnets attached to the plurality of pole segments such that one of the plurality of magnets is positioned ci... | 07/05/2011 |
| 7288865 | Bicycle generator hub A bicycle generator hub is mounted to the front fork of a bicycle and includes a hub shaft, a hub shell, bearings, a generator mechanism and first and second magnetic flux recirculation members. The hub shaft is non-rotatably mounted to the front fork. The hub shell... | 10/30/2007 |
| 7183675 | Permanent magnet stepping motor A permanent magnet (PM) stepping motor includes a rotor structure and a stator. The rotor structure includes an axis, multipolar yoke stacks, and at least one spacer. Each of multipolar yoke stacks includes an N multipolar yoke, a permanent magnet and an S multipola... | 02/27/2007 |
| 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 |
| 6727608 | Claw-pole type stepping motor A claw-pole type stepping motor which includes a stator in which coils are arranged in association with a pair of inner and outer yokes and a pair of pole tooth sections thereby forming a magnetic circuit; and a rotor magnet which is rotatably disposed opposite to t... | 04/27/2004 |
| 6724116 | Alternator permanent magnet rotor design A rotor assembly for an alternator includes an electrical wire defining an excitation winding. A first pole piece and a second pole piece each have a generally circular body defining an axis of rotation and an outer radial periphery. A plurality of pole fingers are ... | 04/20/2004 |
| 4684836 | Magnetic speed reduction device A magnetic speed device includes a rotatable driving shaft and a driven shaft also rotatable about an axis. A stationary pole includes a plurality of pole elements, each having at least one stationary pole surface. The pole elements are circumferentially ... | 08/04/1987 |
| 4217508 | DC motor A DC motor having a rotor which rotates about an axis and a stator. The motor comprises at least two coils adapted to be energized for current to flow therethrough, each coil having a first current path portion through which current flows in a first direc... | 08/12/1980 |
