Hydrophone for acoustic or seismic wave reception
US6330206A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Apr 21, 2000 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Apr 21, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01H11/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Hydrophone with two unsymmetrically connected sensitive elements. The hydrophone comprises a detection unit including a closed housing (1) delimited by two cups (2, 3) resting against each other, each one being provided with a flexible diaphragm (4) and at least two piezoelectric sensitive elements (6, 8) associated each with electrodes (7, 9), one outside the housing, the other inside the housing. The two sensitive elements are preferably different in size, notably with different diameters. Electrodes (7a, 9a) of the sensitive elements that are not in contact with cups (2, 3) are electrically interconnected and the electrodes in contact with cups (2, 3) are also electrically interconnected. Each detection unit is preferably included in a protective assembly (not shown). The hydrophone can be used for marine seismic monitoring or prospecting for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.