Piezoelectric element and driving apparatus
US7531941B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 29, 2007 |
| Grant date | May 12, 2009 |
| Priority date | — |
| Expiry date | Jun 20, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N30/875
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A piezoelectric element comprises: a first non-extendible and non-contractible portion which neither extend nor contract, the first non-extendible and non-contractible portion being provided at one end of the piezoelectric element; an extendible and contractible portion which extends and contracts; at least one electrode which is provided on a surface of the extendible and contractible portion and is provided so as to extend to a position where a surface of the first non-extendible and non-contractible portion lies; and at least one connecting terminal which is connected to said at least one electrode and is provided in a position where the first non-extendible and non-contractible portion lies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.