EP 0881001 B1 20040804 - Electrodynamic transducer for underwater acoustics
Title (en)
Electrodynamic transducer for underwater acoustics
Title (de)
Elektrodynamischer Wandler für Unterwasser-Akustik
Title (fr)
Transducteur électrodynamique pour acoustique sous-marine
Publication
Application
Priority
FR 9706457 A 19970527
Abstract (en)
[origin: EP0881001A1] The electro-dynamic transducer comprises a body (101-103) which has polar pieces (105,105) that define a gap (107) and a moving armature with a dome (109). The dome is extended by a cylinder supporting a coil (120) which slides in the gap. A flexible membrane seals between the body and the armature. Above the dome is a bell (110) which slides in the body of the transducer, having a degree of play between the two which is extremely small. This allows a reduction in the effects of a shock wave arising from an external explosion.
IPC 1-7
IPC 8 full level
B06B 1/04 (2006.01); G10K 11/00 (2006.01)
CPC (source: EP US)
B06B 1/045 (2013.01 - EP US); G10K 11/006 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE GB IT NL
DOCDB simple family (publication)
EP 0881001 A1 19981202; EP 0881001 B1 20040804; DE 69825361 D1 20040909; DE 69825361 T2 20050811; FR 2764160 A1 19981204; FR 2764160 B1 19990827; US 6046962 A 20000404
DOCDB simple family (application)
EP 98401205 A 19980519; DE 69825361 T 19980519; FR 9706457 A 19970527; US 8474198 A 19980527