Piezoelectric sound element
US9398377B2 · kind B2 · utility
0Cited by
4References
2Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 2, 2012 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Mar 31, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K9/122
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A piezoelectric sound generating element capable of providing flatter and less fluctuated sound pressure frequency characteristics includes a diaphragm that is formed in a circular plate shape with a circular profile. A piezoelectric element is affixed to the side of a bottom wall portion of the diaphragm. The piezoelectric element has an asymmetric octagonal profile including a pair of long side portions opposing each other, a pair of short side portions opposing each other, and four connecting side portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.