| (19) |
 |
|
(11) |
EP 0 317 052 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
30.08.1989 Bulletin 1989/35 |
| (43) |
Date of publication A2: |
|
24.05.1989 Bulletin 1989/21 |
| (22) |
Date of filing: 24.08.1988 |
|
| (51) |
International Patent Classification (IPC)4: G10K 11/00 |
|
| (84) |
Designated Contracting States: |
|
BE DE ES FR GR IT NL SE |
| (30) |
Priority: |
18.11.1987 GB 8726987
|
| (71) |
Applicant: GEC-MARCONI LIMITED |
|
Stanmore,
Middlesex HA7 4LY (GB) |
|
| (72) |
Inventors: |
|
- Day, John
Yeovil
Somerset, BA21 5RN (GB)
- Spencer, Neil
Beech Cottage
Sherborne
Dorset (GB)
- Henning, Michael Laurence
Shepton Mallet
Somerset (GB)
|
| (74) |
Representative: Tolfree, Roger Keith et al |
|
The General Electric Company, p.l.c.
GEC Patent Department
Waterhouse Lane
Chelmsford, Essex CM1 2QX
Chelmsford, Essex CM1 2QX (GB) |
|
| |
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(57) A transducer for detecting an acoustic wave, the transducer comprising a panel member
for affixing to the surface of the vessel, the panel member having an array of preformed
apertures into which are inserted into a corresponding array of transducer elements,
the configuring of the array being random or pseudo-random such as to produce a directionally
uniform response for the array of transducer elements.