Gas dynamic bearing motor

Details Gas dynamic bearing motor Gas dynamic bearing motor

2005-06-28

2005-06-28

Le, Dang (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S06700R, C384S107000

Reexamination Certificate

active

06911753

ABSTRACT:
A gas dynamic bearing motor is provided that is capable of setting a bearing radius to a large value to obtain a sufficient radial stiffness, and preventing lock of the bearing and scattering of wear powder outside the bearing. An annular groove11is provided on a lower end surface87of a hub3to thereby enable a deformation of an inner circumferential surface82of the hub3when recording disks9are loaded on the hub3to be suppressed to a small value, thereby enabling partial contact in the radial bearing to be suppressed and lock of the bearing to be prevented. Further, a protrusion12is provided on a base7in a circumferential direction and fitted in the annular groove11to construct a labyrinth seal, thereby enabling scattering of wear powder generated on bearing surfaces outside the bearing to be prevented.

REFERENCES:
patent: 5128571 (1992-07-01), Itsu
patent: 5533811 (1996-07-01), Polch et al.
patent: 6005746 (1999-12-01), Papst
patent: 6271612 (2001-08-01), Tanaka et al.
patent: 6608415 (2003-08-01), Komura et al.
patent: 2800278 (1998-07-01), None
patent: 2000-50568 (2000-02-01), None
patent: 2000-179542 (2000-06-01), None

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