Permanent magnet and permanent magnet rotating machine

Details Permanent magnet and permanent magnet rotating machine Permanent magnet and permanent magnet rotating machine

2011-03-01

2011-03-01

Enad, Elvin G (Department: 2832)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156430, C310S156460, C310S156530

Reexamination Certificate

active

07898137

ABSTRACT:
A permanent magnet has a D-shaped cross section including an arcuate top surface (22), a flat bottom surface (24), and side surfaces (26, 28). Provided that a plurality of permanent magnets are circumferentially arranged so that a great circle (S) circumscribes the apexes (P) on the arcuate top surfaces (22), the top surface (22) includes a central region which delineates an arc of a small circle (T) off-centered from the great circle, and end regions (22a,22b) which are positioned outside the small circle (T) and inside the great circle (S).

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