Measuring and testing – Testing of material
Reexamination Certificate
2006-10-24
2006-10-24
Larkin, Daniel S. (Department: 2856)
Measuring and testing
Testing of material
C324S210000, C324S212000, C360S077010
Reexamination Certificate
active
07124654
ABSTRACT:
A spin stand testing system is used to determine a positioning range of a microactuator disposed on a head gimbal assembly. The microactuator is configured to laterally translate a read sensor of a head of the head gimbal assembly through the positioning range. The spin stand testing system includes a disk having a track, and a secondary mover configured to laterally translate the head gimbal assembly. During testing, a feedback loop keeps the read sensor locked to the track. While the read sensor remains locked, the head gimbal assembly is translated laterally. The microactuator translates the read sensor in an opposite direction until the microactuator reaches an end of its range, which is determined by monitoring a signal. The amount of translation of the head gimbal assembly by the secondary mover when the signal indicates the end of the range is the measured positioning range in one direction.
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Buttar Jagdeep S.
Davies Kenneth R.
Terrill David
Carr & Ferrell LLP
Harrison, Esq. Joshua C.
Larkin Daniel S.
Western Digital (Fremont) Inc.
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