Fluid dynamic bearing

Details Fluid dynamic bearing Fluid dynamic bearing

2005-12-01

2008-10-28

Hannon, Thomas R (Department: 3682)

Bearings

Rotary bearing

Fluid bearing

Reexamination Certificate

active

07441957

ABSTRACT:
A fluid dynamic bearing assembly includes a bearing sleeve (30) having an inner surface and a rotary shaft (30) rotatably received in the bearing sleeve. The rotary shaft has an outer surface. One of the inner surface of the bearing sleeve and the outer surface of the rotary shaft forms a dynamic pressure generating groove pattern (10). The groove pattern includes a plurality of grooves (12) extending from a center area toward one edge of the groove pattern. Each of the grooves has at least one of a depth and a width decreasing from the center area toward the edge.

REFERENCES:
patent: 3150822 (1964-09-01), Dreyfus et al.
patent: 4961122 (1990-10-01), Sakai et al.
patent: 5381456 (1995-01-01), Vetter et al.
patent: 5427456 (1995-06-01), Hensel
patent: 5871285 (1999-02-01), Wasson
patent: 6118620 (2000-09-01), Grantz et al.
patent: 6206572 (2001-03-01), Kobayashi et al.
patent: 6276831 (2001-08-01), Takahashi et al.
patent: 6350059 (2002-02-01), Takahashi
patent: 6502989 (2003-01-01), Takeuchi et al.
patent: 6552456 (2003-04-01), Goto et al.
patent: 6702464 (2004-03-01), Takeuchi et al.
patent: 7090401 (2006-08-01), Rahman et al.
patent: 2007/0253651 (2007-11-01), Gotoh et al.
patent: 1382919 (2002-12-01), None
patent: 1576623 (2005-02-01), None
patent: 2001-339905 (2001-12-01), None

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