Motor and electrically-driven fan employing the same

Details Motor and electrically-driven fan employing the same Motor and electrically-driven fan employing the same

2006-09-19

2006-09-19

Nguyen, Tran (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156460, C360S098070, C360S099010

Reexamination Certificate

active

07109623

ABSTRACT:
An electrically-driven fan1comprises a base portion2; a bearing portion11; a stator13including iron core portions15and coils16; a rotor4including a rotary shaft20and a cylindrical magnet22; blowing blades5; and a rotor position detector23which is disposed on a side of the cylindrical magnet22near to the base portion2, with a gap of predetermined width relative to the cylindrical magnet22; wherein the cylindrical magnet22includes a thin-walled portion24in which an effective thickness of one end part thereof near to the rotor position detector23is made smaller than an effective thickness of the other end part thereof.

REFERENCES:
patent: 4698542 (1987-10-01), Muller
patent: 6181035 (2001-01-01), Acquaviva
patent: 6817507 (2004-11-01), Yeon
patent: 11150908 (1999-06-01), None
patent: 2002 112497 (2002-04-01), None

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