EP 0971557 A3 2000-02-09 - 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
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 (main, further and additional classification)
IPC 8 full level (invention and additional information)
B06B 1/06 (2006.01)
CPC (invention and additional information)
B06B 1/0688 (2013.01)
Citation (search report)
- [A] US 5550790 A 19960827 - VELAMOOR SESH [US], et al
- [A] DE 3309234 A1 19840920 - SIEMENS AG [DE]
- [A] DE 3309218 A1 19840920 - SIEMENS AG [DE]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family
DE 19825581 A1 19991216; EP 0971557 A2 20000112; EP 0971557 A3 20000209; EP 0971557 B1 20030813; ES 2205631 T3 20040501