Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2007-06-06
2010-12-07
Leung, Quyen (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S156230, C310S156830, C310S156430, C310S154210, C310S052000, C310S054000
Reexamination Certificate
active
07847461
ABSTRACT:
A permanent magnet machine includes a stator having a hollow core, a rotor rotatably disposed inside the hollow core, and a plurality of multilayered permanent magnets embedded in the rotor. Each multilayered permanent magnet has opposite first and second ends, and includes a first magnet disposed at the first end, and a second magnet disposed at the second end and coupled to the first magnet. The second magnet has higher magnet strength than the first magnet, and also has lower high-temperature stability than the first magnet.
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Chinese Office Action issued on Mar. 11, 2010, for Application No. 200810109626, filed on Jun. 6, 2008.
Kaiser Edward L.
Laba Matthew D.
Rahman Khwaja M.
GM Global Technology Operations Inc.
Ingrassia Fisher & Lorenz P.C.
Kim John K
Leung Quyen
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