Flexible magnetic disc including hub structure

Details Flexible magnetic disc including hub structure Flexible magnetic disc including hub structure

1984-02-07

1986-12-16

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record medium

In container

360 99, 346137, 369282, G11B 2303, G11B 5016, G01D 1524, G01D 1526

Patent

active

046301569

ABSTRACT:
In a flexible magnetic disc adapted for mounting on a drive spindle of a recording and/or reproducing apparatus and having a hub structure secured to a flexible magnetic sheet member at the center of the latter and defining a bore for receiving the drive spindle; the hub structure includes a substantially circular metal plate with a central aperture substantially registering with the bore and which, at its edge, defines a pair of positioning surfaces projecting into the bore at locations spaced apart about its axis, and a metal spring also projecting into the bore at a side of the latter remote from the positioning surfaces and located by positioning seats also defined at the edge of the aperture in the circular metal plate for engaging the metal spring with the drive spindle in the bore and securely seating the drive spindle against the metal positioning surfaces.

REFERENCES:
patent: 1846378 (1932-02-01), Acheson
patent: 3947839 (1976-03-01), Hall, Sr.
patent: 4017862 (1978-01-01), Lathrop, Jr. et al.
patent: 4149207 (1979-04-01), Porter, Jr. et al.
patent: 4459628 (1984-07-01), Barton
patent: 4466032 (1984-08-01), Saito
patent: 4503474 (1985-03-01), Nigam
IBM Technical Disclosure Bulletin, vol. 13, No. 5, Oct. 77, p. 1242, "Disk Pack Locating Device", by A. Kluth.
IBM Technical Disclosure Bulletin, vol. 19, No. 12, May 77, pp. 4722-4723, "Hub Assembly for Flexible Disk Media", by J. L. Beck et al.

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