EP 2480913 A1 20120801 - ELECTROACOUSTIC TRANSDUCER
Title (en)
ELECTROACOUSTIC TRANSDUCER
Title (de)
ELEKTROAKUSTISCHER WANDLER
Title (fr)
TRANSDUCTEUR ÉLECTROACOUSTIQUE
Publication
Application
Priority
DE 2009001335 W 20090922
Abstract (en)
[origin: WO2011035747A1] An electroacoustic transducer (10) is disclosed, comprising a ring member (11) that contains piezoceramic material and electrodes which contact said material. In order to keep the size and weight of the transducer (10) low while obtaining a sufficiently high acoustic power, the ring member (11) is composed of multiple annular, flat composite modules (16) which rest against each other in the radial direction of the ring member (11). Each composite module (16) has axially spaced-apart piezoceramic fibers which extend in the circumferential direction of the ring member (11), and spaced-apart electrodes which extend transverse to the piezoceramic fibers and contact the same on the longitudinal sides thereof that are radially opposite each other.
IPC 8 full level
CPC (source: EP)
B06B 1/0644 (2013.01); G01V 1/20 (2013.01)
Citation (search report)
See references of WO 2011035747A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
WO 2011035747 A1 20110331; AU 2009352980 A1 20120419; DE 112009005267 A5 20121115; EP 2480913 A1 20120801
DOCDB simple family (application)
DE 2009001335 W 20090922; AU 2009352980 A 20090922; DE 112009005267 T 20090922; EP 09743838 A 20090922