Method for preventing operational and manufacturing...

Metal working – Piezoelectric device making

Reexamination Certificate

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C029S831000, C310S340000, C360S292000, C360S294300, C360S294400

Reexamination Certificate

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10852886

ABSTRACT:
A method of manufacturing an actuator includes applying at least one layer of electrically-conductive material and at least one layer of electrically-insulative material to an actuator block, and separating the actuator block into a plurality of actuators, each actuator having at least one actuator finger. The electrically-conductive material and the electrically-insulative material are applied one layer upon another in an alternating manner to the actuator block in at least one actuator finger location. The layer of insulative material is larger in area than the layer of conductive material such that an insulative layer, applied to the actuator block and sandwiching a conductive layer between the insulative layer and the actuator block, at least partially encloses and electrically isolates the electrically-conductive layer by covering the conductive material on at least three sides.

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Jenkins et al., “Multi-layer Bulk PZT Actuators for Flying Height Control in Ruggedised Hard Disk Drives”, Proceedings on the 2000-12th International Symposium on the Applications of Ferroelectrics, vol. 1, Jul. 2, 2000, pp. 293-296.

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