Disk drive spindle motor with embedded ionizing source for stati

Details Disk drive spindle motor with embedded ionizing source for stati Disk drive spindle motor with embedded ionizing source for stati

1998-12-28

2000-11-21

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

G11B 3314

Patent

active

061511897

ABSTRACT:
A spindle motor for a disk drive includes a shaft, a stator, a hub, an upper bearing, a lower bearing, means for defining a gap and an ionization source. The stator is concentrically positioned about the shaft. The upper and lower bearings rotatably maintain the hub relative to the shaft and each include a plurality of balls, each ball made from a high resistivity material. The ionization source ionizes air in the gap for allowing static electric charge to dissipate through a conductive path provided by the ionized air in the gap.

REFERENCES:
patent: 3818545 (1974-06-01), Olson
patent: 4194191 (1980-03-01), Salem
patent: 4361763 (1982-11-01), Bryant et al.
patent: 5053754 (1991-10-01), Wong
patent: 5696585 (1997-12-01), Wahl et al.
patent: 5729404 (1998-03-01), Dunfield et al.
patent: 5760509 (1998-06-01), Chung

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