Protecting a disc cartridge from inadvertent actuation during no

Details Protecting a disc cartridge from inadvertent actuation during no Protecting a disc cartridge from inadvertent actuation during no

1987-04-16

1988-12-13

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record medium

In container

369291, 360135, G11B 2303, G11B 1900, G11B 582

Patent

active

047915153

ABSTRACT:
A disc cartridge capable of effectively preventing opening of a shutter and damage of a disc therewithin, even when any unexpected shock is suddenly applied to the disc cartridge during non-use of the disc cartridge. The disc cartridge includes a connection mechanism for operatively connecting each of the actuators for releasably locking the shutter, to each of disc receivers, and which is constituted by a guide groove provided in the actuator and formed into a substantially sideways U-shape, and a guide pin provided on the disc receiver and movably positioned in the guide groove. The guide groove is formed with a depression at a distal end of a surface thereof, opposite to the guide pin and toward a forward side of the actuating direction of the actuator, the depression enlarging the guide groove to locate the surface thereof outside of a locus of pivotal movement of the guide pin during non-use of the disc cartridge, and carrying out delayed actuation with respect to the actuator at the time of starting of the disc cartridge.

REFERENCES:
patent: 3416150 (1968-12-01), Lindberg
patent: 3529301 (1970-09-01), Hiruta
patent: 4399480 (1983-08-01), Edwards
patent: 4688127 (1987-08-01), Oishi et al.
patent: 4692831 (1987-09-01), Suzuki

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