EP 0072288 B1 19861230 - ELECTRO-ACOUSTIC TRANSDUCER WITH PIEZO-ELECTRIC POLYMER
Title (en)
ELECTRO-ACOUSTIC TRANSDUCER WITH PIEZO-ELECTRIC POLYMER
Publication
Application
Priority
FR 8115506 A 19810811
Abstract (en)
[origin: US4535205A] In a piezoelectric microphone or hydrophone, the elastic structure which reacts directly to the acoustic pressure is formed of piezoelectric polymer. The electroacoustic transducer according to the invention makes use of an elastic structure in the form of a rim clamped plate having at least one incurvation and covered on at least one of its two faces with electrodes connected to an impedance-matching circuit.
IPC 1-7
IPC 8 full level
H04R 17/00 (2006.01); H04R 17/02 (2006.01)
CPC (source: EP US)
H04R 17/005 (2013.01 - EP US); H04R 17/025 (2013.01 - EP US)
Designated contracting state (EPC)
DE IT NL SE
DOCDB simple family (publication)
EP 0072288 A2 19830216; EP 0072288 A3 19830406; EP 0072288 B1 19861230; CA 1207429 A 19860708; DE 3274945 D1 19870205; FR 2511570 A1 19830218; FR 2511570 B1 19850503; GB 2104345 A 19830302; GB 2104345 B 19850619; JP S5840999 A 19830310; US 4535205 A 19850813
DOCDB simple family (application)
EP 82401393 A 19820727; CA 409046 A 19820809; DE 3274945 T 19820727; FR 8115506 A 19810811; GB 8222882 A 19820809; JP 13907782 A 19820810; US 40651782 A 19820809