EP 0142215 A3 19870311 - ULTRASOUND TRANSDUCER WITH IMPROVED VIBRATIONAL MODES
Title (en)
ULTRASOUND TRANSDUCER WITH IMPROVED VIBRATIONAL MODES
Publication
Application
Priority
US 49836483 A 19830526
Abstract (en)
[origin: EP0142215A2] The transducer of the present invention is diced into subelements which have a height-to-width ratio which determines the modality of their vibration. The subelements are then electrically connected to provide a transducer having the desired electrical configuration, i.e., an annular array transducer. Using the present invention, the electro-acoustic characteristics of the transducer are not determinitive of the vibrational characteristics of the individual subelements.
IPC 1-7
IPC 8 full level
A61B 8/00 (2006.01); B06B 1/06 (2006.01); H04R 17/00 (2006.01)
CPC (source: EP)
B06B 1/0622 (2013.01)
Citation (search report)
- [X] EP 0025092 A1 19810318 - SIEMENS AG [DE]
- [X] FR 2485858 A1 19811231 - COMMISSARIAT ENERGIE ATOMIQUE [FR]
- [XP] US 4434384 A 19840228 - DUNNROWICZ CLARENCE J [US], et al
- [E] FR 2544577 A1 19841019 - CENTRE NAT RECH SCIENT [FR]
- [A] EP 0006623 A2 19800109 - SIEMENS AG [DE]
- [A] US 4122725 A 19781031 - THOMPSON ROBERT B
- [XP] ACOUSTICAL IMAGING, Minneapolis, Minnesota, US, 26th-28th October 1983, pages 357-368, vol. 13; P. CHALLANDE et al.: "A new technique for realizing annular arrays or complex shaped transducers"
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0142215 A2 19850522; EP 0142215 A3 19870311; JP S605133 A 19850111
DOCDB simple family (application)
EP 84303562 A 19840525; JP 10736284 A 19840525