Flexible magnetic disk write protect device

Details Flexible magnetic disk write protect device Flexible magnetic disk write protect device

1984-08-07

1987-04-14

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record medium

In container

360 60, G11B 2303, G11B 1504, G11B 1904

Patent

active

046583173

ABSTRACT:
A device to disable the write enable system of flexible magnetic disk drives. By closing the notch normally provided in the edge of a standard flexible magnetic disk jacket, an engagement pin configured to take advantage of the construction and physical characteristics of the flexible magnetic disk jacket is inserted into the jacket notch thereby preventing the activation of the write enable function of the flexible magnetic disk drive and providing a visual indicator to the operator that the disk installed and operating in the disk drive is write protected.

REFERENCES:
patent: 4521820 (1985-07-01), Fann
patent: 4536812 (1985-08-01), Oishi et al.
patent: 4549240 (1985-10-01), Hodges
Gilligan, D. W.; "Reusable Write Protect Tab for Floppy Disk", I.B.M. Technical Disclosure Bulletin; vol. 26, No. 12, May 1984, pp. 6427-6428.

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