Disc clamping apparatus

Details Disc clamping apparatus Disc clamping apparatus

2005-08-09

2005-08-09

Psitos, Aristotelis M (Department: 2653)

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

C369S271100, C720S604000

Reexamination Certificate

active

06928045

ABSTRACT:
A disc clamping apparatus includes an upper clamper holder, a lower clamper holder which is combined with the upper clamper holder, a clamper which is movably installed between the upper clamper holder and the lower clamper holder and clamps a disc that is disposed on a turntable, a first magnetic member installed between the upper clamper holder and the lower clamper holder, a second magnetic member installed on the turntable to face the first magnetic member so that a magnetic force operates between the first magnetic member and the second magnetic member to clamp the disc and an elastic member disposed between the upper clamper holder and the clamper so as to provide an elastic force to push the clamper against the disc. The disc clamping apparatus clamps discs having various thicknesses. Also, a clamping force of the disc clamping apparatus is changed in proportion to the thickness of the disc, and thus a proper clamping force can be applied to the disc based on the thickness of the disc.

REFERENCES:
patent: 4802158 (1989-01-01), Ogusu
patent: 5610900 (1997-03-01), Yamashita et al.
patent: 6570836 (2003-05-01), Yabushita

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