Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2008-04-08
2008-04-08
Lam, Thanh (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S156740
Reexamination Certificate
active
07355309
ABSTRACT:
In order to provide a less expensive generator, a rotor using nonmagnetic beams is disclosed. The rotor includes a magnetic steel rim connected to a main generator shaft by a hub. The magnetic rim supports the components of the rotor, which includes a plurality of magnets and pole pieces. The pole pieces are connected to the rim with non-magnetic standoffs and nonmagnetic fasteners. The magnets are supported radially by nonmagnetic beams. The magnets are retained tangentially by pole pieces and radially by wedges. The components of the rotor are further retained axially between plates coupled to the rim and a shoulder on the pole pieces.
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Costin Daniel
John Vinod
Cantor & Colburn LLP
Lam Thanh
Northern Power Systems Inc.
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