Actuator with fluid-redirecting and drag-reducing surface...

Details Actuator with fluid-redirecting and drag-reducing surface... Actuator with fluid-redirecting and drag-reducing surface...

2008-09-30

2008-09-30

Heinz, A. J. (Department: 2627)

Dynamic magnetic information storage or retrieval

Head mounting

For shifting head between tracks

Reexamination Certificate

active

11169436

ABSTRACT:
An actuator assembly is provided comprising a data transfer head moved by an actuator arm in a data storing and retrieving relationship with a data storage medium. Streamwise arranged aerodynamic fluid re-directing and drag-reducing features on a surface of the actuator arm modify frictional forces acting on the arm from a fluid flow created by moving the medium. A method is provided for improving nonrepeatable runnout disturbances in a data storage device by aligning the drag-reducing features of the actuator assembly with a direction of a mean flow direction of the fluid at an outer diameter of the storage medium to divert the fluid flow away from the head gimbal assembly.

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