Automotive alternator including annular core having...

Details Automotive alternator including annular core having... Automotive alternator including annular core having...

2008-12-10

2010-11-16

Leung, Quyen (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156660, C310S156720, C310S156730, C310S168000

Reexamination Certificate

active

07834512

ABSTRACT:
An automotive alternator is disclosed which includes an annular core disposed to surround the radially outer peripheries of all magnetic pole claws of magnetic pole cores. The annular core has, on an outer surface thereof, a plurality of protrusions, a plurality of recesses, and a plurality of slopes. Each of the protrusions is so provided as to be coincident with a corresponding one of the magnetic pole claws of the magnetic pole cores in the circumferential direction of a rotary shaft. Each of the recesses is alternately formed with the protrusions so as to be coincident with a corresponding one of air gaps formed between the magnetic pole claws of the magnetic pole cores in the circumferential direction. Each of the slopes is inclined to the radial direction of the rotary shaft and connects a circumferentially adjacent pair of one of the protrusions and one of the recesses.

REFERENCES:
patent: 6424073 (2002-07-01), Kometani et al.
patent: 6608424 (2003-08-01), Kusase
patent: 6680557 (2004-01-01), Kusase
patent: 2007/0046137 (2007-03-01), Ooiwa
patent: 2007/0262672 (2007-11-01), Maekawa et al.
patent: B2 3785984 (2006-06-01), None
patent: A 2007-68304 (2007-03-01), None

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