Global Patent Index - EP 2564437 A1

EP 2564437 A1 20130306 - PIEZOCERAMIC BENDING TRANSDUCER

Title (en)

PIEZOCERAMIC BENDING TRANSDUCER

Title (de)

PIEZOKERAMISCHER BIEGEWANDLER

Title (fr)

TRANSDUCTEUR DE FLEXION PIÉZOCÉRAMIQUE

Publication

EP 2564437 A1 20130306 (DE)

Application

EP 11760426 A 20110831

Priority

  • DE 102010041200 A 20100922
  • EP 2011065023 W 20110831

Abstract (en)

[origin: WO2012038223A1] The invention relates to a piezoceramic bending transducer (1) comprising a fixed support (7) at one longitudinal end (13) thereof and having a predetermined deflection direction (15) at the other, free longitudinal end (14) thereof, wherein the bending transducer (1) is formed from a piezoceramic beam (2, 3) and a passive beam (4), which are stacked on one another in the deflection direction (15) and the flexural rigidities of which are designed such that when the bending transducer (1) is deflected, a tension-compression stress transition line (9) settles in the passive beam (4) and the bending stiffness of the passive beam decreases along the tension-compression stress transition line (9) toward the free longitudinal end (14), so that the stress distribution in the piezoceramic beam (2, 3) is homogenous along the tension-compression stress transition line (9) toward the free longitudinal end (14).

IPC 8 full level

H01L 41/083 (2006.01); H01L 41/09 (2006.01); H01L 41/113 (2006.01)

CPC (source: EP)

H01L 41/1136 (2013.01)

Citation (search report)

See references of WO 2012038223A1

Designated contracting state (EPC)

AL 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 RS SE SI SK SM TR

DOCDB simple family (publication)

DE 102010041200 A1 20120322; EP 2564437 A1 20130306; WO 2012038223 A1 20120329

DOCDB simple family (application)

DE 102010041200 A 20100922; EP 11760426 A 20110831; EP 2011065023 W 20110831