Removable disk construction

Details Removable disk construction Removable disk construction

1986-10-27

1989-01-03

Hecker, Stuart N.

Dynamic magnetic information storage or retrieval

Record medium

In container

360 9904, 369282, G11B 2303

Patent

active

047961406

ABSTRACT:
A rotary disk including a recording and reproducing sheet, and a hub formed of hard material secured to a central portion of the sheet. The hub comprises a center opening adapted to receive a main spindle of a turntable of disk driving means, two planar surfaces arranged in an intersecting relation to each other and formed on a projecting wall portion of the center opening, and a resilient member located in a position facing the two planar surfaces for pressing the spindle against the two planar surfaces. Even if the recording and reproducing sheet of the rotary disk is a thin magnetic sheet, there is no risk of damage of the sheet. When the rotary disk is set on the turntable, the center of rotation of the rotary disk and the center of rotation of the turntable can be automatically brought into alignment with each other.

REFERENCES:
patent: 4149207 (1979-04-01), Porter, Jr. et al.
patent: 4152740 (1979-05-01), Stratton
patent: 4166622 (1978-09-01), Rager
patent: 4445157 (1984-04-01), Takahashi
patent: 4459628 (1984-07-01), Barton
patent: 4503530 (1985-03-01), Hinlein et al.
patent: 4532564 (1985-07-01), Larson et al.
Kluth, A. "Disk Pack Locating Device", IBM TDB, Oct. 1970, vol. 13, No. 5, p. 1242.

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