Fluid dynamic bearing motor

Details Fluid dynamic bearing motor Fluid dynamic bearing motor

2007-02-22

2008-10-07

Le, Dang D (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C384S107000

Reexamination Certificate

active

07432621

ABSTRACT:
The present invention relates to the fluid dynamic bearing motor. The fluid dynamic bearing motor having a ring-shaped housing having a coil joined to an edge thereof, a sleeve including a protruded part joined to a central part of the housing and a ring-shaped contact part formed as a single body with the protruded part, a ring-shaped hub having an inner perimeter joined to the contact part and having a magnet attached to an edge thereof, the magnet facing the coil, a stopper positioned between the housing and the contact part and joined to the hub such that the sleeve is not detached from the hub, a storing part formed as a space between the stopper and the sleeve and filled with fluid, for supplying and maintaining the fluid in a gap formed between the contact part and the inner perimeter of the hub, and a penetration hole formed from a center of the sleeve to an edge of the sleeve, the penetration hole being spatially separated from the storing part.

REFERENCES:
patent: 6900567 (2005-05-01), Aiello et al.
patent: 6949852 (2005-09-01), Aiello

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