Laminated piezoelectric element

Details Laminated piezoelectric element Laminated piezoelectric element

2006-04-18

2008-03-04

Dougherty, Thomas M. (Department: 2834)

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

Reexamination Certificate

active

07339310

ABSTRACT:
A laminated piezoelectric element (1) comprises a laminated piezoelectric element (1) piezoelectric layers (11) composed of a ceramic capable of expanding and contracting upon application of a voltage, and internal electrode layers (21aand21b) that supply voltage to the piezoelectric layers, the internal electrode layers and piezoelectric layers being alternately provided, a first external electrode layer (31) provided on a side of the laminated piezoelectric element (1) and electrically connected with the internal electrode layers (21aand21b), and a second external electrode layer (32) provided on a side of the laminated piezoelectric element (1) and electrically connected with the internal electrode layers (21aand21b) via the first ecternal electrode layer wherein there are specific external electrode width relationships.

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patent: 2001/0026114 (2001-10-01), Takao et al.
patent: 2001/0047796 (2001-12-01), Yamada et al.
patent: 8-242025 (1996-09-01), None
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patent: 2001-345490 (2001-12-01), None
patent: 2002-61551 (2002-02-01), None

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