Ceramic disc-drive actuator

Details Ceramic disc-drive actuator Ceramic disc-drive actuator

1995-01-19

1997-10-28

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310366, 360109, 360 7716, H01L 4108

Patent

active

056820763

ABSTRACT:
A paired piezoelectric micromotor for providing motion relative to a body, including two rectangular piezoelectric plates, each piezoelectric plate having first and second long edges, first and second short edges, front and back faces, electrodes attached to the front and back faces thereof and a ceramic spacer attached to the first long edge at the end thereof near the first short edge, the ceramic spacer engaging a surface of the body. The first short edge of the first plate is adjacent and substantially parallel to the first short edge of the second plate. Resilient force is applied to a portion of each plate, pressing the ceramic spacer against the surface of the body. A voltage source electrifies at least some of the electrodes with an excitation voltage.

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