Flexible magnetic disc with a spring plate in the hub

Details Flexible magnetic disc with a spring plate in the hub Flexible magnetic disc with a spring plate in the hub

1989-05-31

1991-05-07

Severin, David J.

Dynamic magnetic information storage or retrieval

Record medium

Disk

360133, G11B 17022, G11B 5012

Patent

active

050141520

ABSTRACT:
In a flexible magnetic disc comprised of a circular flexible magnetic sheet, an elongated metal spring plate having a main portion and support portions at respective ends of the main portion, and a hub structure secured to the flexible magnetic sheet at the center thereof and having an opening extending axially therethrough; the hub structure has a pair of positioning surfaces at locations spaced apart from each other about a central axis of the opening, and a pair of seats for receiving the support portions of the elongated metal spring plate so as to mount the elongated metal spring plate on the hub structure with the main portion of the elongated metal spring plate positioned in opposing relationship to the pair of positioning surfaces, and a portion of the spring plate contiguous with, and extending along a lower edge of the main portion of the metal spring plate is bent away from the central axis of the opening.

REFERENCES:
patent: 1915348 (1933-06-01), Acheson
patent: 4545047 (1985-10-01), Rickert
patent: 4630156 (1986-12-01), Saito
patent: 4743993 (1988-05-01), Ommori et al.

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