Device for opening and closing a shutter member of a disk cartri

Details Device for opening and closing a shutter member of a disk cartri Device for opening and closing a shutter member of a disk cartri

1986-09-10

1987-08-18

Stephan, Steven L.

Dynamic information storage or retrieval

Storage medium structure

Adjuncts or adapters

206312, 206444, 360133, 369273, G11B 2302, G11B 512

Patent

active

046882065

ABSTRACT:
A device is provided for opening and closing a shutter member of a disk cartridge containing a disk in a cartridge housing and adapted for insertion into a signal recording and/or reproducing apparatus that uses the disk as a magnetic recording medium. The cartridge housing has signal read and write apertures in its upper and lower walls. The shutter member is mounted so as to partially cover a front wall and the upper wall and lower wall of the cartridge housing for opening and closing the apertures, and has an engaging opening exposing the front and lower walls. The device includes a pair of opening and closing elements mounted on the signal recording and/or reproducing apparatus so as to be in the path of insertion of the disk cartridge. The elements are provided with engaging portions adapted for selectively engaging in the engaging opening of the shutter member and for being rotated when thrust by the disk cartridge. The opening and closing elements are so designed that their engaging portions strike each other to inhibit insertion of the disk cartridge when the latter is inserted with a reversed orientation so that its rear side opposes the opening and closing elements.

REFERENCES:
patent: 4492351 (1985-01-01), Zoellner
patent: 4573093 (1986-02-01), Obama et al.
patent: 4613917 (1987-09-01), Shimaoka et al.

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