EP 0562326 A1 19930929 - Atmospheric ultrasonic transducer.
Title (en)
Atmospheric ultrasonic transducer.
Title (de)
Luftultraschallwandler.
Title (fr)
Transducteur ultrasonore atmosphérique.
Publication
Application
Priority
DE 4209374 A 19920323
Abstract (en)
Atmospheric ultrasonic transducer comprising one or more films which are arranged in a self-supporting manner and made of piezoelectric material, in particular polymer material, the film or films having bulges with varying radii of curvature. <IMAGE>
Abstract (de)
Luftultraschallwandler aus einer oder mehreren freitragend angeordneten Folien aus piezoelektrischem Material, insbesondere Polymermaterial, wobei die Folie bzw. Folien Wölbungen mit unterschiedlichen Krümmungsradien aufweist. <IMAGE>
IPC 1-7
IPC 8 full level
B06B 1/06 (2006.01)
CPC (source: EP)
B06B 1/0688 (2013.01)
Citation (search report)
- [A] DE 3009068 A1 19810924 - LERCH REINHARD, et al
- [A] GB 1593273 A 19810715 - STANDARD TELEPHONES CABLES LTD
- [A] FR 2465387 A1 19810320 - AUDAX [FR]
- [A] PATENT ABSTRACTS OF JAPAN vol. 10, no. 363 (E-461)(2420) 5. Dezember 1986 & JP-A-61 158 300 ( SONY CORP. ) 17. Juli 1986
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 0562326 A1 19930929; DE 4209374 A1 19930930; DE 4209374 C2 19940428
DOCDB simple family (application)
EP 93103482 A 19930304; DE 4209374 A 19920323