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:
May. 24, 2011
Filed:
Feb. 14, 2008
Bernhard Döllgast, Deutschlandsberg, AT;
Masahiro Inagaki, Kagoshima, JP;
Harald Johannes Kastl, Fichtelberg, DE;
Atsushi Ochi, Yokohama, JP;
Takami Sakamoto, Kagoshima, JP;
Carsten Schuh, Baldham, DE;
Bernhard Döllgast, Deutschlandsberg, AT;
Masahiro Inagaki, Kagoshima, JP;
Harald Johannes Kastl, Fichtelberg, DE;
Atsushi Ochi, Yokohama, JP;
Takami Sakamoto, Kagoshima, JP;
Carsten Schuh, Baldham, DE;
Siemens Aktiengesellschaft, Munich, DE;
Kyocera Corporation, Kyoto, JP;
Abstract
A piezoceramic multilayer actuator () includes a plurality of green layers, wherein the green layers are to be converted to piezoceramic layers () with a piezoceramic material in a subsequent step of heating. A security layer material mixture with a second material () and particles () embedded in the second material () is provided, wherein the particles () have a third material different from the first material and different from the second material (). The security layer material mixture is laminated between two piezoceramic layers (), thereby forming a green stack. The green stack is heated to a sintering temperature, wherein the green layers are converted to the piezoceramic layers (), and wherein a chemical reaction of the third material degrades the mechanical connection of the piezoceramic layers () by the security layer ().