Optically readable disk with self centering hub

Details Optically readable disk with self centering hub Optically readable disk with self centering hub

1989-05-12

1990-03-20

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Record medium

In container

369282, G11B 2303

Patent

active

049106244

ABSTRACT:
Information carrier includes an optically readable disc with a center hole and a hub with radially resilient clamping members which extend through the center hole to retain it on the disc and center it with respect to the information carrying surface on the disc. The hub further carries a sleeve which centers it on a spindle, and a magnetizable clamping ring for retaining it on a turntable, which carries permanent magnets. In an information carrier having two discs sandwiched together, the clamping members of each hub extend between the clamping members of the other hub and pass through the center holes of both discs to engage the opposite disc and retain the discs to each other.

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patent: 4670077 (1987-06-01), Peeters
patent: 4695910 (1987-09-01), Moruyano et al.

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