Piezoelectric vibrator
US7975551B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2009 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Oct 6, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/026
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A piezoelectric vibrator including a pair of first piezoelectric elements having the same rectangular parallelepiped shape and polarized in opposite directions; and a pair of second piezoelectric elements, having the same rectangular parallelepiped shape and respectively attached to a face of the first piezoelectric element, and polarized in the same direction. In the piezoelectric vibrator the first piezoelectric elements are longer than the second piezoelectric elements, and the first piezoelectric elements vibrate in a longitudinal direction and the second piezoelectric elements vibrate in a bending direction when electrical signals are inputted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.