Global Patent Index - EP 0971557 A2

EP 0971557 A2 2000-01-12 - Ultrasonic foil transducer

Title (en)

Ultrasonic foil transducer

Title (de)

Ultraschall-Folien-Wandler

Title (fr)

Transducteur à feuilles ultrasoniques

Publication

EP 0971557 A2 (DE)

Application

EP 99109344 A

Priority

DE 19825581 A

Abstract (en)

[origin: DE19825581A1] The transformer comprises an insulating layer (3) between two electrically conductive films (9,10) made of a conductive plastic film. An Independent claim is made for a process for manufacturing the ultrasonic film transformer in which an electrically conductive film (9) is laminated with the insulating film (3) and a second conductive film (10) is applied to the laminated foil. Preferred Features: One conductive film is non-textured and forms a vibrating membrane while the second conductive film is textured to form individual electrodes and conductive paths and is mushroom shaped in cross-section.

Abstract (de)

Die Erfindung betrifft einen Ultraschall-Folien-Wandler (1), umfassend zwei elektrisch leitende Folien (9, 10), zwischen denen eine Isolienschicht (3) angeordnet ist, wobei die elektrisch leitenden Folien (9, 10) aus einem leitfähigen Kunststoff gebildet sind und ein Verfahren zur Herstellung von Ultraschall-Folien-Wandlern (1). <IMAGE>

IPC 1-7 (main, further and additional classification)

H04R 1/00; H04R 17/00

IPC 8 full level (invention and additional information)

B06B 1/06 (2006.01)

CPC (invention and additional information)

B06B 1/0688 (2013.01)

Designated contracting state (EPC)

DE ES FR GB IT SE

DOCDB simple family

DE 19825581 A1 19991216; EP 0971557 A2 20000112; EP 0971557 A3 20000209; EP 0971557 B1 20030813; ES 2205631 T3 20040501