Patent ID: 7816830

Claim:
A permanent magnet apparatus comprising: a cylindrical stator assembly having a central axis and a plurality of stator pole assemblies positioned along a stator perimeter of the stator assembly, each stator pole assembly being provided with a wire coil and a laminated stack of a plurality of substantially axially aligned stator segments, each stator segment comprising a center-post portion detachably engaged with respect to a back-iron portion, the wire coil being disposed about a stator-wall defined by the center-post portions; and a cylindrical rotor assembly coaxial along the central axis with the stator assembly and adapted to freely rotate with respect to the stator assembly, the rotor assembly having a plurality of rotor pole assemblies spaced along a rotor perimeter of the rotor assembly, each rotor pole assembly being provided with a laminated stack of a plurality of substantially axially aligned rotor segments and a permanent magnet secured thereto, wherein the rotor pole assemblies are positioned to move in proximity to the stator pole assemblies to achieve electrical performance by the apparatus.