EP 0799097 A1 19971008 - ACOUSTIC TRANSDUCER SHAPED AS A PRESTRESSED RING
Title (en)
ACOUSTIC TRANSDUCER SHAPED AS A PRESTRESSED RING
Title (de)
VORGESPANNTEN RING AKUSTISCHER WANDLER
Title (fr)
TRANSDUCTEUR ACOUSTIQUE EN ANNEAU PRECONTRAINT
Publication
Application
Priority
- FR 9501676 W 19951215
- FR 9415587 A 19941223
Abstract (en)
[origin: WO9620046A1] Acoustic ring-shaped transducers comprising a set of piezoelectric prestressed segments are described. According to the invention, said segments (101) are grouped to form a set of sectors (102) separated by clamping wedges (109). The set of sectors is placed in a forming ring (108) and the wedges are drawn towards the centre by screws (111) so as to urge the sectors against said forming ring and to prestress the segments. Stress gauges (107) are used to control and adjust the resulting stress to a required value while minimising dispersion between sectors. The invention is useful for producing low frequency, powerful, detachable acoustic transducers.
IPC 1-7
IPC 8 full level
H04R 17/00 (2006.01); B06B 1/06 (2006.01)
CPC (source: EP US)
B06B 1/0655 (2013.01 - EP US)
Citation (search report)
See references of WO 9620046A1
Designated contracting state (EPC)
DE GB IT
DOCDB simple family (publication)
WO 9620046 A1 19960704; AU 4393496 A 19960719; AU 695815 B2 19980820; DE 69505014 D1 19981029; DE 69505014 T2 19990506; EP 0799097 A1 19971008; EP 0799097 B1 19980923; FR 2728755 A1 19960628; FR 2728755 B1 19970124; JP 3653733 B2 20050602; JP H10511523 A 19981104; US 6065349 A 20000523
DOCDB simple family (application)
FR 9501676 W 19951215; AU 4393496 A 19951215; DE 69505014 T 19951215; EP 95942751 A 19951215; FR 9415587 A 19941223; JP 52024096 A 19951215; US 86022397 A 19970623