Disk drive comprising a ratchet arm applied to a disk and...

Details Disk drive comprising a ratchet arm applied to a disk and... Disk drive comprising a ratchet arm applied to a disk and...

2005-01-18

2005-01-18

Watko, Julie Anne (Department: 2652)

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

Reexamination Certificate

active

06844996

ABSTRACT:
A disk drive is disclosed comprising an enclosure, a disk, a head actuated radially over the disk, a spindle motor for rotating the disk, and a ratchet arm having a base end connected to the enclosure of the disk drive and a wind vane extending from the base end adjacent the disk. The ratchet arm engages the disk when the disk is not rotating, and the ratchet arm disengages from the disk due to windage pushing on the wind vane, the windage generated by the disk rotating at an angular velocity greater than a threshold.

REFERENCES:
patent: 5157566 (1992-10-01), Hishikawa et al.
patent: 5572505 (1996-11-01), Llewellyn
patent: 5768057 (1998-06-01), Fernandes et al.
patent: 2001-254772 (2001-09-01), None
patent: 2001-273744 (2001-10-01), None
IBM, “Apparatus to Limit Dlsk Pack Rotation During Shipping and Handling”, Dec. 1999 (IBM Research Disclosure Database) No. 428169, p. 1720.

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