Piezo transducers with mechanical amplification for very low frequencies, and acoustic antennas
US4287582A · kind A · utility
23Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 8, 1979 |
| Grant date | Sep 1, 1981 |
| Priority date | — |
| Expiry date | May 8, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K9/121
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A new piezoelectric transducer incorporated with a mechanical amplifier is described. The transducer comprises a rigid base plate; two lateral plates whose lower edge is connected to the plate by a thin portion; a stack of piezoelectric elements having alternate electrodes; a horn formed of a flexible elastic diaphragm which connects together the upper edges of the two plates; an enclosure and a sealing skin which is acoustically transparent. The tranducer is capable of emitting or receiving high power acoustic waves of very low frequencies including for instance, a few Hertz to 500 Hz.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.