Disk drive including surface coated disk clamp screws with...

Details Disk drive including surface coated disk clamp screws with... Disk drive including surface coated disk clamp screws with...

2006-06-06

2006-06-06

Chen, Tianjie (Department: 2656)

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

Reexamination Certificate

active

07057852

ABSTRACT:
An aspect of the invention can be regarded as a disk drive that includes a disk drive base, a disk including disk surface, and a spindle motor including a spindle motor hub including a clamping surface with disk clamp holes. The disk drive includes a disk clamp disposed upon the disk surface. The disk clamp includes a screw head interface surface and screw openings. The disk drive includes disk clamp screws each including a shaft sized and configured to respectively engage the threaded disk clamp holes respectively through the screw openings. The screws each further include a screw head having a screw head clamping surface disposed against the screw head interface surface. The screws each further include a surface coating disposed upon the screw head clamping surface. The surface coating has a static coefficient of friction less than a static coefficient of friction of the screw head.

REFERENCES:
patent: 3672053 (1972-06-01), Wiss
patent: 4639802 (1987-01-01), Neubauer et al.
patent: 4945432 (1990-07-01), Matsudaira et al.
patent: 5218492 (1993-06-01), Miyamoto et al.
patent: 5569429 (1996-10-01), Luker
patent: 5891253 (1999-04-01), Wong et al.
patent: 6352722 (2002-03-01), Blair
patent: 6908683 (2005-06-01), Ohashi
patent: 2002/0071205 (2002-06-01), Koyanagi et al.
patent: 08328547 (1996-12-01), None
patent: 09259497 (1997-10-01), None

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