Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2006-12-12
2006-12-12
Tamai, Karl (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S156380, C310S043000, C029S598000
Reexamination Certificate
active
07148598
ABSTRACT:
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 outwardly relative to the axis of rotation to form a plurality of outwardly extending spoke portions of permanent magnet material. The ferro-magnetic material is positioned adjacent to the outwardly extending spoke portions of permanent magnet material. The shaft supports the spoke permanent magnet rotor for rotation about the axis of rotation. The permanent magnet material may circumferentially surround the axis of rotation to form a center portion of permanent magnet material. Further, the axis of rotation may pass through the permanent magnet material. The spoke permanent magnet rotor may be formed using a compaction process and/or an injection molding process.
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Machine translation of Nozawa et al., JP 06-038415, “Permanent Magnet Type Rotor”, Feb. 1994.
Machine translation of 07-154,935 Sakamoto.
Bartos Ronald P.
Heideman Robert J.
Ionel Dan M.
A.O. Smith Corporation
Michael & Best & Friedrich LLP
Tamai Karl
LandOfFree
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