Dynamic magnetic information storage or retrieval – Head mounting – For adjusting head position
Reexamination Certificate
2007-10-02
2007-10-02
Klimowicz, William J (Department: 2627)
Dynamic magnetic information storage or retrieval
Head mounting
For adjusting head position
C360S294400, C360S294500
Reexamination Certificate
active
11158445
ABSTRACT:
A dual-stage actuator disk drive has both a rotary primary actuator and a rotary secondary actuator. When the primary actuator initiates a seek there are two torque components acting on the center of mass of the secondary actuator's moving portion. The center of rotation of the moving portion is located at an optimal location relative to the center of mass of the moving portion, which results in cancellation of the two torque components and a secondary actuator that has essentially no resonant frequency in response to a seek by the primary actuator. If the optimal location can not be achieved because of assembly tolerances, then the center of rotation is placed at a distance at least as great as the assembly tolerance from the optimal location.
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Hirano Toshiki
Huang Fu-Ying
Semba Tetsuo
White Matthew T.
Berthold Thomas R.
Hitachi Global Storage Technologies - Netherlands B.V.
Klimowicz William J
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