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:
Sep. 13, 2005
Filed:
Jun. 28, 2002
Reiner Bindig, Bindlach, DE;
Hans-jurgen Schreiner, Neunkirchen am Sand-Rollhofen, DE;
Matthias Simmerl, Henfenfeld, DE;
Jurgen Schmieder, Lauf, DE;
Thilo Steichele, Nuremberg, DE;
Reiner Bindig, Bindlach, DE;
Hans-Jurgen Schreiner, Neunkirchen am Sand-Rollhofen, DE;
Matthias Simmerl, Henfenfeld, DE;
Jurgen Schmieder, Lauf, DE;
Thilo Steichele, Nuremberg, DE;
Ceramtec AG Innovative Ceramic Engineering, Plochingen, DE;
Abstract
The invention relates to a monolithic multilayer actuator comprising a sintered stack of thin films, made from piezo-ceramic with inlaid metallic inner electrodes which extend from the stack on alternate sides and are electrically wired in parallel with external electrodes () and are provided with connector wires (). According to the invention, the actuator may be supplied with nominal voltage over a long period of time, without a change in the properties thereof, whereby the multilayer actuator () is sealed within a metallic or ceramic housing (), the connector wires () are integral parts of the housing base () and the housing () is filled with a water-absorbing medium () and a water-transporting, electrically-insulating medium ().