Rotary electric machine

Details Rotary electric machine Rotary electric machine

2007-08-21

2007-08-21

Mullins, Burton S. (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156080, C310S268000

Reexamination Certificate

active

11496647

ABSTRACT:
A rotary electric machine comprises a rotating shaft rotatably supported by bearings, a rotor attached integrally with the shaft and a stator facing the rotor. The stator includes a plurality of coils arranged substantially in a circular form in a rotating direction of the shaft. The rotor includes a circular-disc rotor yoke made of a ferromagnetic material, such as iron. Depressed and raised portions on a surface of the rotor yoke facing the stator, except for the center portion, are arranged in a circumferential direction of the rotor yoke. N-pole and S-pole magnets are alternately arranged in the depressed portions. Therefore, in addition to torque generated by the magnets, reluctance torque is generated between the raised portions on the rotor yoke side and the teeth on the stator side, thus making it possible to increase the range of rotation speeds of the motor.

REFERENCES:
patent: 3401287 (1968-09-01), French et al.
patent: 3678311 (1972-07-01), Mattingly
patent: 3867655 (1975-02-01), Stengel et al.
patent: 4329636 (1982-05-01), Uchida et al.
patent: 4634906 (1987-01-01), Grosjean
patent: 4835840 (1989-06-01), Stokes
patent: 4902924 (1990-02-01), Ushiro et al.
patent: 4918346 (1990-04-01), Tajima et al.
patent: 5334899 (1994-08-01), Skybyk
patent: 5736798 (1998-04-01), O'Brien et al.
patent: 5962942 (1999-10-01), Pullen et al.
patent: 6157112 (2000-12-01), Suzuki et al.
patent: 2606951 (1988-05-01), None
patent: 53115012 (1978-07-01), None
patent: 54098905 (1979-04-01), None
patent: 59103555 (1984-06-01), None
patent: 6268471 (1987-04-01), None
patent: 6312759 (1988-08-01), None
patent: 10225033 (1998-09-01), None
patent: 2001136721 (2001-05-01), None
English translation of International Preliminary Examination Report dated May 6, 2003.
International Search Report dated Nov. 26, 2002.
Search report by European Patent Office Dated Jun. 12, 2006.
Profumo F et al: “Axial Flux machines drives: A New Variable Solution For Electric Cars” Aug. 5, 1996. Industrial Electronics, Control, and Instrumentation, 1996., Proceedings of the 1996 IEEE IECON 22ndInternational Conference on Talpe, Taiwan Aug. 5-10, 1996, New York, NY USA IEEE, US pp. 34-40, XPO10203377 ISBN: 0-7803-2774-6. Figure 8A.

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