Disk drive employing a spindle motor comprising a locking...

Details Disk drive employing a spindle motor comprising a locking... Disk drive employing a spindle motor comprising a locking...

2005-03-15

2005-03-15

Watko, Julie Anne (Department: 2653)

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

C188S156000, C310S077000, C310S093000

Reexamination Certificate

active

06867946

ABSTRACT:
A disk drive is disclosed comprising a disk, a head actuated radially over the disk, and a spindle motor for rotating the disk. The spindle motor comprises a stator having at least one stator coil wrapped around a stator tooth. The spindle motor further comprises a hub rotated by the stator when current is applied to the stator coil, and a locking spring arm having a fixed base. The locking spring arm engages the hub when no current is applied to the stator coil, and the locking spring arm disengages from the hub when current applied to the stator coil generates a magnetic flux which pulls the locking spring arm away from the hub.

REFERENCES:
patent: 3626220 (1971-12-01), Niculescu
patent: 5157566 (1992-10-01), Hishikawa et al.
patent: 5306989 (1994-04-01), Feller, Jr.
patent: 5572505 (1996-11-01), Llewellyn
patent: 6177748 (2001-01-01), Katcher et al.
patent: 57-13943 (1982-01-01), None
patent: 2001-273744 (2001-10-01), None

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