Access door latch and interlock mechanism

Details Access door latch and interlock mechanism Access door latch and interlock mechanism

1981-03-31

1983-08-02

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360105, G11B 1702, G11B 2112, G11B 554

Patent

active

043969631

ABSTRACT:
A latch interlock mechanism for an access door through which a magnetic disc cartridge is inserted into a disc-drive assembly. The interlock prevents the access door from being opened while a magnetic head is being loaded or is loaded onto the disc. A pivot latch cooperating with the access door is coupled to a rigid rod which moves along its length. The rod is coupled to the head lift mechanism which loads and unloads the magnetic heads. The push rod is coupled to the pivot latch by means of a coil spring co-axially mounted on the push rod with the end of the spring furthest from the first end of the push rod fixedly attached to the push rod. The other end of the coil spring interacts with the pivot latch. The second end of the push rod is coupled to an actuator element of the head lift mechanism by means of a pivoted lever. During a head load cycle, the movement of the actuator element is coupled to the push rod to engage the latch before the heads are lowered onto the surfaces of the disc. A small button located at the tip of the first end of the push rod may be pressed through an opening in the disc-drive assembly to manually unload the heads from the surface of the disc and to disengage the pivot latch from the access door.

REFERENCES:
patent: 3797033 (1974-03-01), Prieur
patent: 3973272 (1976-08-01), Morgan et al.

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