Title (en)

MULTIELEMENT SOUND PROBE COMPRISING A COMPOSITE ELECTRICALLY CONDUCTING COATING AND METHOD FOR MAKING SAME

Title (de)

SCHALWANDLER AUS MEHREREN ELEMENTEN MIT LEITFÄHIGER VERBUNDSCHICHT UND VERFAHREN ZUR HERSTELLUNG

Title (fr)

SONDE ACOUSTIQUE MULTIELEMENTS COMPRENANT UN FILM COMPOSITE CONDUCTEUR ET PROCEDE DE FABRICATION

Publication

EP 1084000 B1 20041013 (FR)

Application

EP 99922247 A 19990601

Priority

• FR 9901284 W 19990601
• FR 9807094 A 19980605

Abstract (en)

[origin: FR2779575A1] The invention concerns a multielement sound probe comprising a backing (1), an electrical circuit (2) with strip conductors (Pi1) connected to elementary piezoelectric transducers (Ti1). The probe further comprises, a composite material electrically conducting coating located between the piezoelectric transducers (Ti1k) and the strip conductors (Pi1). In standard fashion, the piezoelectric transducers are cut out into sub-elements to obtain elements acoustically uncoupled and electrically coupled. The presence of the composite material electrically conducting coating (3) enables the strip conductors to be dimensioned with respect to the sub-elements and constitutes an intermediate element relative to the thermal expansion variations between the backing (1) and the piezoelectric transducers.

IPC 1-7

B06B 1/06

IPC 8 full level

B06B 1/06 (2006.01)

CPC (source: EP KR US)

B06B 1/06 (2013.01 - KR); B06B 1/0629 (2013.01 - EP US)

Designated contracting state (EPC)

FR IT NL

DOCDB simple family (publication)

FR 2779575 A1 19991210; FR 2779575 B1 20030530; CN 1217749 C 20050907; CN 1304340 A 20010718; EP 1084000 A1 20010321; EP 1084000 B1 20041013; JP 2002517310 A 20020618; JP 4288002 B2 20090701; KR 100577036 B1 20060508; KR 20010043944 A 20010525; US 6522051 B1 20030218; WO 9964169 A1 19991216

DOCDB simple family (application)

FR 9807094 A 19980605; CN 99807004 A 19990601; EP 99922247 A 19990601; FR 9901284 W 19990601; JP 2000553223 A 19990601; KR 20007013515 A 20001130; US 70156000 A 20001205