Spindle motor and method of manufacturing spindle motor

Details Spindle motor and method of manufacturing spindle motor Spindle motor and method of manufacturing spindle motor

2005-11-28

2009-06-23

Hanh, Nguyen N (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

Reexamination Certificate

active

07550887

ABSTRACT:
A spindle motor in which a rotor is rotatably supported via a pair of upper and lower bushes fixed to a shaft. In a part of the rotor, upper and lower covers are fixed so as to face the upper and lower bushes each via a gap. The inner periphery of the upper cover faces the outer peripheral surface of the shaft via a small clearance in the radial direction, and the inner periphery of the lower cover shorter than the inner periphery of the upper cover faces the outer peripheral surface of the shaft via the clearance in the radial direction.

REFERENCES:
patent: 6731456 (2004-05-01), Parsoneault et al.
patent: 2002/0113507 (2002-08-01), Nottingham et al.
patent: 2003/0030222 (2003-02-01), Grantz et al.
patent: 2004/0156568 (2004-08-01), Woldemar et al.

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