EP 0971557 B1 20030813 - Ultrasonic foil transducer
Title (en)
Ultrasonic foil transducer
Title (de)
Ultraschall-Folien-Wandler
Title (fr)
Transducteur à feuilles ultrasoniques
Publication
Application
Priority
DE 19825581 A 19980609
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.
IPC 1-7
IPC 8 full level
B06B 1/06 (2006.01); H04R 1/00 (2006.01); H04R 17/00 (2006.01)
CPC (source: EP)
B06B 1/0688 (2013.01)
Citation (examination)
EP 0825585 A2 19980225 - VOLKSWAGEN AG [DE]
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
DE 19825581 A1 19991216; DE 59906567 D1 20030918; EP 0971557 A2 20000112; EP 0971557 A3 20000209; EP 0971557 B1 20030813; ES 2205631 T3 20040501
DOCDB simple family (application)
DE 19825581 A 19980609; DE 59906567 T 19990531; EP 99109344 A 19990531; ES 99109344 T 19990531