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:
Mar. 27, 2001
Filed:
Nov. 25, 1997
Reiner Bindig, Bindlach, DE;
Andreas Gunther, Speikern, DE;
Gunther Helke, Laug, DE;
Jurgen Schmieder, Lauf, DE;
CeramTec AG Innovative Ceramic Engineering, Plochingen, DE;
Abstract
A monolithic multi-layer actuator includes a sintered stack of thin films of piezoceramic material with metallic internal electrodes which lead out of the stack (,) in alternate directions and are connected electrically in parallel by way of external electrodes, with the external electrodes on the contact sides of the stack consisting of an applied basic metallisation and being connected to electrical connection elements preferably by way of soldering. In order to avoid failures of the actuator during dynamic loads it is suggested that an electroconductive electrode which is structured to be three-dimensional in structure be arranged between the basic metal lining and the connection elements, which electrode is connected to the basic metallisation by way of partial contact points and is constructed to be expandable between the contact points.