Grooves on both the moving and the stationary mating fluid...

Details Grooves on both the moving and the stationary mating fluid... Grooves on both the moving and the stationary mating fluid...

2005-02-18

2009-06-02

Hannon, Thomas R (Department: 3656)

Bearings

Rotary bearing

Fluid bearing

C384S100000

Reexamination Certificate

active

07540664

ABSTRACT:
A fluid dynamic bearing is provided having a first surface having at least a first groove pattern formed therein; and the second surface having at least a second groove pattern formed therein; wherein one of the surfaces is configured to be rotated relative to the other surface. The groove patterns may be conventional patterns or patterns described herein. Further, the patterns discussed herein may be disposed wholly on each surface or may be divided between the two surfaces. The groove design is intended to be useable in either a journal, thrust or other fluid bearing design.

REFERENCES:
patent: 3918773 (1975-11-01), Tuffias
patent: 4934836 (1990-06-01), Tanaka et al.
patent: 5415476 (1995-05-01), Onishi
patent: 5675201 (1997-10-01), Komura et al.
patent: 5908247 (1999-06-01), Leuthold et al.
patent: 6698931 (2004-03-01), Hino
patent: 7090401 (2006-08-01), Rahman et al.
patent: 7160031 (2007-01-01), Kita et al.

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