Dynamic magnetic information storage or retrieval – Head mounting – For moving head into/out of transducing position
Reexamination Certificate
2008-05-06
2008-05-06
Renner, Craig A. (Department: 2627)
Dynamic magnetic information storage or retrieval
Head mounting
For moving head into/out of transducing position
C360S265100
Reexamination Certificate
active
07369367
ABSTRACT:
The invention includes a yoke assembly containing a top and a bottom proximity latch magnet. The invention includes a voice coil attached to a voice coil bias steel. The crash stop includes a magnetic proximity latch created by the voice coil bias steel attracted to the top and bottom proximity latch magnets. It may also include using the magnetic proximity latch with a magnetically weakened contact latch. Experiments have shown that the combined magnetic proximity latch and the magnetically weakened contact latch require significantly less initial releasing force than the prior art crash stops, and meet rotary shock requirements. The invention includes making the actuator assembly, the voice coil motor assembly, and the CSS hard disk drive. The invention includes operating the CSS hard disk drive with at least the magnetic proximity latch.
REFERENCES:
patent: 5742453 (1998-04-01), MacPherson
patent: 5801907 (1998-09-01), Yagi et al.
patent: 6252744 (2001-06-01), Kelemen
patent: 6445548 (2002-09-01), Sasaki et al.
patent: 08111077 (1996-04-01), None
Chang Joseph
Pham Tho
Tran Lam
GSS Law Group
Jennings Earle
Renner Craig A.
Samsung Electronics Co,. Ltd.
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