Hydrodynamic bearing device, and spindle motor and...

Details Hydrodynamic bearing device, and spindle motor and... Hydrodynamic bearing device, and spindle motor and...

2005-09-28

2009-02-24

Klimowicz, William J (Department: 2627)

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C384S100000

Reexamination Certificate

active

07495863

ABSTRACT:
A hydrodynamic bearing device has high reliability and is suitable for miniaturization through superior heat resistance and by utilizing a dynamic pressure-generating liquid with little loss due to evaporation. The hydrodynamic bearing device has at least one of a shaft structure and a sleeve having a dynamic pressure-generating mechanism. The dynamic pressure-generating liquid present in a gap between the shaft structure and the sleeve has a main component that is ionic liquid.

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Hiroyuki Ohno, “Ionic Liquid II—Marvelous Developments and Colorful Near Future”, CMC Publishing Co., Ltd., 2006.

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