Turntable device for an optical disk

Details Turntable device for an optical disk Turntable device for an optical disk

1997-12-22

2000-06-06

Wolff, John H.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

G11B 2500

Patent

active

060727675

ABSTRACT:
A turntable device of the present invention is applicable to, e.g., an optical disk drive and driven by a spindle motor while supporting an optical disk or similar disk-like recording medium thereon. A turntable assembly is made up of an upper turntable and a lower turntable. The upper turntable includes a projection having a tapered portion, and spring portions. The tapered portion and spring portions cooperate to surely obviate the eccentricity of the disk. The lower turntable includes a recess forming a space for accommodating the spring portions, thereby reducing the overall thickness of the assembly. The turntable device is therefore highly portable and small size.

REFERENCES:
patent: 4514839 (1985-04-01), Eisemann
patent: 4618951 (1986-10-01), Okita et al.
patent: 4768185 (1988-08-01), Camerik
patent: 4791624 (1988-12-01), Stinesen
patent: 5050159 (1991-09-01), Kenmotsu
patent: 5633856 (1997-05-01), Mukawa
patent: 5724209 (1998-03-01), Dunckley et al.

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