Brushless motor and recording disk driving apparatus having...

Details Brushless motor and recording disk driving apparatus having... Brushless motor and recording disk driving apparatus having...

2005-08-29

2008-03-18

Le, Dang (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156010, C310S156120

Reexamination Certificate

active

07345388

ABSTRACT:
A brushless motor as an example of the invention has a stationary assembly2having a first housing member10made of a ferromagnetic material and a stator20held in the first housing member10, and a rotor6having a rotor magnet70facing the stator20. A annular shield plate80held by the rotor6is disposed between the rotor magnet70and the first housing member10and, further, an outer circumferential face80aof the shield plate80is disposed between a magnetically neutral area46in the radial direction in the lower end of the rotor magnet70and the outer circumferential face of the rotor magnet70.

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patent: 2004-304917 (2004-10-01), None
patent: 2004-304918 (2004-10-01), None

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