Electrical generator or motor structure – Dynamoelectric – Rotary
Reexamination Certificate
2005-01-18
2005-01-18
Nguyen, Tran (Department: 2834)
Electrical generator or motor structure
Dynamoelectric
Rotary
C310S156130, C310S156280, C310S216006, C310S216055
Reexamination Certificate
active
06844645
ABSTRACT:
A permanent magnet motor has rotor structure that includes magnetically permeable backing material attached to magnets for enhancing flux density distribution. A plurality of permanent magnets are circumferentially distributed about an axis of rotation, adjacent magnets successively alternating in magnetic polarity. The magnetically permeable material is configured with apertures therethrough at areas of low flux density, such as at central portions of the magnets, while in contact with perimeter areas of the magnets. Additional apertures in the material may be located at spaced intersections at which no significant flux density exists. The apertures may be replaced with backing material portions of reduced radial thickness.
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Maslov Boris A.
Soghomonian Zareh
McDermott Will & Emery LLP
Nguyen Tran
Wavecrest Laboratories LLC
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