Dynamic information storage or retrieval – Storage medium structure – Adjuncts or adapters
Patent
1988-04-06
1990-05-15
Stephan, Steven L.
Dynamic information storage or retrieval
Storage medium structure
Adjuncts or adapters
369271, G11B 1702, G11B 1920
Patent
active
049264109
ABSTRACT:
A disk includes a substrate of the disk provided with a recording medium to and from which information signals are recorded and/or reproduced, and a disk hub provided with a metal plate formed with an engaging projection and a supporting member having a mating engaging section engaged by the projection of the metal plate, the supporting member being secured to the central portion of the substrate of the disk. According to the present invention, a retaining section is provided to the major surface or to the perimeter of the supporting member, and a holding member is engaged in the retaining section to prevent the supporting member from being turned with respect to the substrate of the disk when the metal plate is turned in a prescribed attachment direction so as to be attached to the supporting member.
REFERENCES:
patent: 4829510 (1989-05-01), Takehashi
Suzuki Akira
Takahashi Kenji
Dowden Donald S.
Eslinger Lewis H.
Maioli Jay H.
Sony Corporation
Stephan Steven L.
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