Global Patent Index - EP 2229242 A1

EP 2229242 A1 20100922 - ULTRASONIC TRANSDUCER FOR GENERATING ASYMMETRIC SOUND FIELDS

Title (en)

ULTRASONIC TRANSDUCER FOR GENERATING ASYMMETRIC SOUND FIELDS

Title (de)

ULTRASCHALLWANDLER ZUR ERZEUGUNG ASYMMETRISCHER SCHALLFELDER

Title (fr)

TRANSDUCTEUR ULTRASONORE PERMETTANT LA RÉALISATION DE CHAMPS ACOUSTIQUES ASYMÉTRIQUES

Publication

EP 2229242 A1 20100922 (DE)

Application

EP 08869632 A 20081219

Priority

  • DE 2008002140 W 20081219
  • DE 102008003594 A 20080109

Abstract (en)

[origin: WO2009086805A1] The invention relates to an ultrasonic transducer for generating asymmetric sound fields. Said ultrasonic transducer comprises a housing (1) that encompasses an elongate diaphragm (2) and a plate-shaped transducer element (3) which is arranged on one side of a main surface of the diaphragm (2), is made of an electrostrictive material, and allows the diaphragm (2) to be excited to generate oscillations in the ultrasonic range. A gap is formed between the diaphragm (2) and the transducer element (3), the diaphragm (2) being coupled to the transducer element (3) exclusively along the edge thereof. Such an ultrasonic transducer makes it possible to generate asymmetric sound fields which have an aperture ratio of 1:3 or more.

IPC 8 full level

B06B 1/06 (2006.01)

CPC (source: EP)

G10K 9/122 (2013.01)

Citation (search report)

See references of WO 2009086805A1

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 MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

DOCDB simple family (publication)

WO 2009086805 A1 20090716; AT E509708 T1 20110615; DE 112008003772 A5 20101209; EP 2229242 A1 20100922; EP 2229242 B1 20110518

DOCDB simple family (application)

DE 2008002140 W 20081219; AT 08869632 T 20081219; DE 112008003772 T 20081219; EP 08869632 A 20081219