Aerodynamic latch for disk file actuator

Details Aerodynamic latch for disk file actuator Aerodynamic latch for disk file actuator

1985-04-29

1987-03-03

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 75, 360 86, 360 98, 360103, G11B 554, G11B 2102, G11B 2122

Patent

active

046479970

ABSTRACT:
An aerodynamically powered release latch mechanism for a fixed disk data file is disclosed. An airflow generator disk is commonly journalled with a single data storage disk for generating airflow in an enclosed chamber. A latch is journalled for rotation relative to a base casting and has an axis of rotation spaced a predetermined distance away from the periphery of the data storage disk. The latch includes a vane movably disposed in a space defined between the airflow generator disk and the data storage disk so as to be deflected by airflow generated by rotation thereof. A releasable engagement mechanism engages a rotary actuator assembly in a locking position in the range of relative movements therebetween whenever airflow is insufficient to deflect the vane. A bias spring is operable between the latch and the base casting for maintaining the engagement mechanism in locking position in the absence of airflow.

REFERENCES:
patent: 4371903 (1983-02-01), Lewis
patent: 4375070 (1983-02-01), Isozaki et al.
patent: 4535374 (1985-08-01), Anderson et al.
patent: 4538193 (1985-08-01), Dimmick et al.
patent: 4562500 (1985-12-01), Bygdnes
E. Lennemann, "Aerodynamic Aspects of Disk Files", IBM J. Res. Develop., Nov. 1974, pp. 480-488.

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