Title:
HYDROPHONE HOUSING
Document Type and Number:
WIPO Patent Application WO/2013/175010
Kind Code:
A3
Abstract:
The invention relates to a hydrophone housing. The housing comprises an outer casing with an exterior shape being in close contact with sediment when buried therein and having a deflectable wall part. Solid material partly fills the casing to define an outer chamber behind the deflectable wall part, a cavity shaped so that an inner chamber is defined immediately surrounding a hydrophone sensing element held therein, and a first duct for liquid flow communication between the outer chamber and the cavity or an internal volume of the hydrophone sensing element. Thereby, a hydraulic coupling is provided so that an acoustic pressure causing small radial displacements of outer surface of the housing will, via liquid in the first duct, cause large radial displacements of the hydrophone sensitive element. The area of the deflectable wall part is much larger than the area of the sensitive element so that only small displacements of the housing are required to cause large displacements at the hydrophone sensing element.
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Inventors:
FURUHAUG ROAR (NO)
KRINGLEBOTN JON THOMAS (NO)
KRINGLEBOTN JON THOMAS (NO)
Application Number:
PCT/EP2013/060802
Publication Date:
May 15, 2014
Filing Date:
May 24, 2013
Export Citation:
Assignee:
OPTOPLAN AS (NO)
International Classes:
G01V1/18; G01H9/00
Foreign References:
| US5363342A | 1994-11-08 | |||
| US20070258330A1 | 2007-11-08 | |||
| US20040202401A1 | 2004-10-14 | |||
| US7295493B1 | 2007-11-13 | |||
| US20040184352A1 | 2004-09-23 | |||
| US4568408A | 1986-02-04 | |||
| US20030035344A1 | 2003-02-20 |
Attorney, Agent or Firm:
PLOUGMANN & VINGTOFT A/S (Copenhagen S, DK)
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