Spindle motor

Details Spindle motor Spindle motor

2006-03-03

2008-10-28

Harvey, James (Department: 2833)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156430

Reexamination Certificate

active

07443068

ABSTRACT:
A spindle motor includes a rotor magnet including a plurality of pairs of magnetic poles polarized in a radial direction and arranged along a circumferential direction of the rotor magnet and a rotor hub supporting the rotor magnet and being rotatable around an axis of the circular shape of the rotor magnet. A circular surface in the form of a convex portion is provided on a magnetic shield portion of the rotor hub and is arranged to oppose one axial end surface of the rotor magnet and abut against the rotor magnet such that a gap is provided between the axial end surface of the rotor magnet and the circular surface of rotor hub.

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patent: WO 00/62404 (2000-10-01), None

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