Actuator assembly with compensated outer arms

Details Actuator assembly with compensated outer arms Actuator assembly with compensated outer arms

1992-11-10

1994-03-29

Wolff, John H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 9803, 360109, G11B 5012, G11B 556

Patent

active

052990826

ABSTRACT:
An apparatus and method to compensate the outer actuator arms of a disk drive actuator assembly from an imbalanced moment to maintain a selected preload force. The present invention advantageously utilizes thin actuator arms to hold read/write head assemblies. During disk drive operation, the outer actuator arm receives an unbalanced outward moment originating from the flying read/write head associated with the outer actuator arm. This unbalanced outward moment is balanced by initially displacing the outer read/write heads inward so that they are not aligned straight. This special alignment creates an additional preload force which is decreased to a normal preload force when the outer actuator arm is returned to a straight alignment by said imbalanced moment. The present invention maintains a uniform preload value and therefore uniform read/write head flying height. In so doing, the outer actuator arms remain aligned during operation and the disk drive system of the present invention offers greater reliability.

REFERENCES:
patent: 5208712 (1993-05-01), Hatch et al.
patent: 5218496 (1993-06-01), Kaczeus
patent: 5223993 (1993-06-01), Squires et al.
patent: 5237472 (1993-08-01), Morehouse et al.

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