Rotary electric machine

Details Rotary electric machine Rotary electric machine

2006-05-09

2006-05-09

Lam, Thanh (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156150, C310S156280

Reexamination Certificate

active

07042126

ABSTRACT:
A rotary electric machine is disclosed having stator windings and a rotor incorporating permanent magnets distributed about the axis of the rotor to create a magnetic field having circumferentially alternating north and south poles. In the invention, the principal structural member is an external sleeve, this providing resistance to bending and to centrifugally induced stresses due to rotation. The direction of polarization of the permanent magnets214is such that the parts of the magnetic circuits that lie within the outer circumference of the rotor pass predominantly through the bodies of the permanent magnets214, thereby avoiding the need for a central ferromagnetic core to complete the magnetic circuit of the magnets.

REFERENCES:
patent: 4827170 (1989-05-01), Kawamura et al.
patent: 5168186 (1992-12-01), Yashiro
patent: 5220228 (1993-06-01), Sibata
patent: 6144130 (2000-11-01), Kawamura
patent: 2003/0020351 (2003-01-01), Lee et al.
patent: 0 096 515 (1983-12-01), None
patent: 2 089 584 (1982-06-01), None
patent: 10-94202 (1998-04-01), None

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