Fluid dynamic bearing device and motor including the device

Details Fluid dynamic bearing device and motor including the device Fluid dynamic bearing device and motor including the device

2006-03-14

2006-03-14

Hannon, Thomas R. (Department: 3682)

Bearings

Rotary bearing

Fluid bearing

C384S112000, C384S113000

Reexamination Certificate

active

07011450

ABSTRACT:
A fluid dynamic bearing device including a shaft having an interior pressure regulating hole by which a center portion of a thrust surface confronting a thrust plate and a lubricant pool portion of an inner circumferential surface of a sleeve are communicated with each other. Thus, the device is capable of obtaining stable thrust floating characteristics and preventing leaks of the lubricant as well as exhaustion of the lubricant.

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patent: 5993066 (1999-11-01), Leuthold et al.
patent: 6072660 (2000-06-01), Teshima
patent: 6361214 (2002-03-01), Ichiyama
patent: 6364532 (2002-04-01), Yoshikawa et al.
patent: 58-024616 (1983-02-01), None
patent: 59-043216 (1984-03-01), None

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