Fluid dynamic pressure bearing including dynamic pressure...

Details Fluid dynamic pressure bearing including dynamic pressure... Fluid dynamic pressure bearing including dynamic pressure...

2005-10-04

2008-08-12

Renner, Craig A (Department: 2627)

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Record transport with head stationary during transducing

Disk record

C384S107000, C384S115000, C384S120000

Reexamination Certificate

active

07411762

ABSTRACT:
In a fluid dynamic pressure bearing, upper herringbone grooves and lower herringbone grooves continuous with the upper herringbone grooves are formed on the inner peripheral surface of a sleeve by plastic deformation. In addition, an annular groove recessed radially inward is formed on the outer peripheral surface of the shaft in a location opposing the region where the upper herringbone grooves and the lower herringbone grooves adjoin.

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patent: 2005-090637 (2005-04-01), None

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