Monolithic multi-layered actuator with external electrodes made of a metallic, porous, expandable conductive layer
US8823244B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 2009 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Jun 26, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/42
Abstract
A monolithic multilayer actuator made of a sintered stack of thin films of piezoceramio with embedded metallic internal electrodes. All metallic internal electrodes of one polarity are electrically connected in parallel by way of a base metallization applied to the stack and wherein an external electrode is connected in an electrically conducting manner to the base metallization for electrical contacting purposes. In order to provide that the external electrode can be applied to the base metallization using simple and cost-effective means so that said electrode is expandable such that it dissipates the cracks arising from cracking energy in the actuator without the external electrode disconnecting in the process that are sintered together, the layer being applied onto the base metallization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.