Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2005-04-12
2005-04-12
Schuberg, Darren (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S200000, C310S156480, C310S184000, C310S185000, C310S254100, C310S257000
Reexamination Certificate
active
06879075
ABSTRACT:
A permanent magnet synchronous machine with improved torque and power characteristics. A circumferential-oriented rotor assembly is provided with alternating permanent magnets and magnetic pole pieces. In order to reduce the amount of leakage flux in the rotor and increase the effective length of the permanent magnet, a trapezoidal or otherwise tapered permanent magnet structure is used. By alternating trapezoidal permanent magnet, and magnetic pole pieces, a higher intensity magnetic field is created in the air gap utilizing the same radial space in the motor without altering the weight or volume of the motor compared to conventional machines.
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Calfo Raymond Mark
Krefta Mark Peter
Curtiss-Wright Electro-Mechanical Corporation
Mohandesi Iraj A.
Reed Smith LLP
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