The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 28, 2008
Filed:
Oct. 31, 2006
Kunihiko Yoshioka, Nagoya, JP;
Makoto Ohmori, Nagoya, JP;
Akihiko Honda, Nagoya, JP;
Koji Kimura, Nagoya, JP;
Kunihiko Yoshioka, Nagoya, JP;
Makoto Ohmori, Nagoya, JP;
Akihiko Honda, Nagoya, JP;
Koji Kimura, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
There is realized a piezoelectric/electrostrictive device of a laminated type from which a large displacement is obtained and which is highly reliable over a long period. A laminated piezoelectric/electrostrictive devicehas: a laminated columnar articleconstituted by alternately laminating a plurality of piezoelectric/electrostrictive layersand inner electrode layers; and a pair of outer electrodesdisposed on a peripheral surface of the laminated columnar articleto connect layers having the same polarity to each other among the inner electrode layers. This laminated piezoelectric/electrostrictive deviceis characterized in that interfaceshaving a relatively low interface strength as compared with the other interfaces are disposed at a specific interval among the interfaces between layers of the laminated columnar article