Piezoelectric actuator

Details Piezoelectric actuator Piezoelectric actuator

2007-09-18

2007-09-18

Dougherty, Thomas M. (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

C310S367000

Reexamination Certificate

active

10539041

ABSTRACT:
A piezoelectric actuator for actuating a mechanical component, having a multilayered structure of piezoelectric layers with inner electrodes disposed between them and contacting outer electrodes on alternating sides and the piezoelectric actuator has chamfered corners or edges. In the region of the corners or edges, on the sides of the piezoelectric actuator on which the inner electrodes with alternating polarities are routed to the respective outer electrodes, the inner electrodes have a contour that makes it possible to achieve a lower field intensity between the inner electrodes of alternating polarities in the structure of piezoelectric layers. This is achieved by virtue of the fact that on the side that does not contact the outer electrodes, the edge has an obtuse angle (∝) or is rounded.

REFERENCES:
patent: 5252883 (1993-10-01), Kondo
patent: 6054793 (2000-04-01), Kawai et al.
patent: 6462464 (2002-10-01), Mitarai et al.
patent: 6930435 (2005-08-01), Boecking
patent: 2002/0152857 (2002-10-01), Sato et al.
patent: 2002/0153431 (2002-10-01), Sato et al.
patent: 2002/0185935 (2002-12-01), Yamamoto et al.
patent: 2005/0046310 (2005-03-01), Kobayashi et al.
patent: 2006/0113871 (2006-06-01), Schoor
patent: WO 03/010835 (2003-02-01), None

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