Acceleration sensor
US6744181B1 · kind B1 · utility
7Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1997 |
| Grant date | Jun 1, 2004 |
| Priority date | — |
| Expiry date | May 15, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P15/0922
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A piezoelectric type acceleration sensor which is small in size and has a high charge sensitivity and large static capacitance includes a piezoelectric element having a laminate of more than three piezoelectric layers. Electrodes are provided between the piezoelectric layers and the top and bottom surfaces of the laminate. The piezoelectric element is supported at opposed ends. Adjacent ones of the piezoelectric layers are polarized so that charge having the same polarity is accumulated at the electrode interposed the adjacent ones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.