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:
Aug. 28, 2007
Filed:
May. 27, 2004
Yukihisa Takeuchi, Nishikamo-Gun, JP;
Koji Kimura, Nagoya, JP;
Koichi Iwata, Kani, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A piezoelectric actuatorcapable of being driven with a high electric field intensity, obtaining a larger displacement and being high in electric conducting reliability of electrodes, and comprising: at least one celldefined by two side walls, a substrateand a ceiling wall; the two side walls being disposed on the substrate and being covered with the ceiling wall to define one cell, at least the two side wallscomprising piezoelectric/electrostrictive devices, and the piezoelectric/electrostrictive devicesbeing capable of changing a volume of the cellby displacement of the walls. Each of the piezoelectric/electrostrictive devicescomprises a plurality of layered piezoelectric/electrostrictive bodiesand electrodeswhich are alternately stacked, and end portions of the electrodesare embedded in the piezoelectric/electrostrictive bodiesin at least the internal side of the cell