Disk cartridge

Details Disk cartridge Disk cartridge

1991-10-01

1994-01-11

Westin, Edward P.

Dynamic magnetic information storage or retrieval

Record medium

In container

369291, G11B 2303

Patent

active

052787176

ABSTRACT:
A disk cartridge has a case rotatably containing a disk therein and is formed with a driving shaft insertion hole and a plurality of pickup insertion holes. A rotary shutter is provided and rotatably supported by a disk holder disposed around the driving shaft insertion hole to open and close the pickup insertion holes. A turning shutter is provided rotatably about a center separate from a center of the rotary shutter to open and close the driving shaft insertion hole. The disk holder is provided with surfaces for positioning the rotary shutter and the turning shutter. Both of the shutters are held and guided by the disk holder to open and close the driving shaft insertion hole and the pickup insertion holes during charging or removing the disk cartridge into or from a disk player.

REFERENCES:
patent: 4630728 (1986-12-01), Matsumoto et al.
patent: 4644434 (1987-02-01), Oishi et al.
patent: 4695911 (1987-09-01), Loosen
patent: 5119256 (1992-06-01), NakaMats
patent: 5153801 (1992-10-01), Ikebe et al.

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