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EP 0401027 A2 19901205 - An acoustic transducer.

Title (en)

An acoustic transducer.

Title (de)

Akustischer Wandler.

Title (fr)

Transducteur acoustique.

Publication

EP 0401027 A2 19901205 (EN)

Application

EP 90305961 A 19900531

Priority

GB 8912782 A 19890602

Abstract (en)

In order to reduce side lobes in the transmission characteristics of an acoustic transducer the amplitude of transmission is tapered towards the edges of the aperture. This is done by constructing the transducer from ceramic-epoxy composite elements connected in a one-three configuration and distributed with varying volume fraction in the width and length directions.

IPC 1-7

B06B 1/06; G10K 11/34

IPC 8 full level

H04R 1/38 (2006.01); B06B 1/06 (2006.01); H04R 17/00 (2006.01)

CPC (source: EP)

B06B 1/0629 (2013.01)

Designated contracting state (EPC)

DE ES FR IT SE

DOCDB simple family (publication)

EP 0401027 A2 19901205; EP 0401027 A3 19920108; CA 2017382 A1 19901202; GB 2232323 A 19901205; GB 8912782 D0 19890719; GB 9012171 D0 19900718; JP H03113999 A 19910515

DOCDB simple family (application)

EP 90305961 A 19900531; CA 2017382 A 19900523; GB 8912782 A 19890602; GB 9012171 A 19900531; JP 14426390 A 19900601