Hydrophone structure and method
US5675556A · kind A · utility
11Cited by
16References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1995 |
| Grant date | Oct 7, 1997 |
| Priority date | — |
| Expiry date | Oct 19, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R1/44
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hydrophone structure comprises a hydrophone casing within which is mounted a conductive substrate. Sound pressure signals are conducted into the interior of the substrate, on which are mounted piezoelectric crystals on the exterior of the substrate. The volume between the casing and the substrate is nearly filled with a fluid, preferably oil. One or more bubbles of air remain in the volume between the casing and the substrate to permit vibration of the substrate and consequently the piezoelectric hydrophone element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.