Device for centering and driving flexible discs

Details Device for centering and driving flexible discs Device for centering and driving flexible discs

1977-11-09

1979-10-16

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 97, G11B 2504

Patent

active

041715314

ABSTRACT:
An apparatus for centering and driving a flexible disc includes a rotatable spindle and a cone which is insertable through a drive hole in the disc and then into an opening in the spindle whereby the disc is contained between the cone and spindle. A plurality of upstanding centering fingers are mounted in the spindle, extended to the threshold of the spindle opening and equally spaced from the spindle center. The fingers engage the cone as it enters the opening and bend elastically responsive to further cone movement into the opening. The fingers, when so bent, urge the cone toward a centered relation with the spindle. The fingers are adapted to engage any unsupported portion of the disc positioned over the spindle opening, and to support such portion against bending responsive to contact with the moving cone.

REFERENCES:
patent: 3678481 (1972-07-01), Dalziel et al.
patent: 3898814 (1975-08-01), Chou et al.
patent: 3913137 (1975-10-01), Morgan
patent: 3968972 (1976-07-01), Morgan
patent: 3990111 (1976-11-01), Elliott
IBM/TDB, vol. 19, No. 6, Nov. 1976, "Collet Mechanism . . ." by Lightner.

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