Fluid bearing unit and spindle motor using the same

Details Fluid bearing unit and spindle motor using the same Fluid bearing unit and spindle motor using the same

2004-07-12

2008-12-02

McAvoy, Ellen M. (Department: 1797)

Solid anti-friction devices, materials therefor, lubricant or se

Lubricants or separants for moving solid surfaces and...

Organic -co- compound

C384S100000, C310S090000, C310S090500

Reexamination Certificate

active

07459416

ABSTRACT:
The present invention provides a fluid bearing unit capable of achieving lower torque and lower current consumption in comparison with a conventional bearing unit, and a spindle motor using the same. The present invention employs an ester derived from 1,5-pentanediol having one alkyl side chain and saturated monovalent fatty acid having 5 to 8 carbon atoms as a base oil of a lubricant with which a gap between a shaft and a sleeve is filled.

REFERENCES:
patent: 2766266 (1956-10-01), Emerson et al.
patent: 5627147 (1997-05-01), Hayakawa et al.
patent: 5629274 (1997-05-01), Hayakawa et al.
patent: 6023114 (2000-02-01), Mori et al.
patent: 6335310 (2002-01-01), Suekuni et al.
patent: 6617289 (2003-09-01), Memita et al.
patent: 6903056 (2005-06-01), Nagano et al.
patent: 7147376 (2006-12-01), Shimizu et al.
patent: 7176167 (2007-02-01), Akiyama et al.
patent: 7249363 (2007-07-01), Noda et al.
patent: 2000063860 (2000-02-01), None
patent: 2001316687 (2001-11-01), None

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