EP 0118837 A3 19850515 - ULTRASONIC TRANSDUCER
Title (en)
ULTRASONIC TRANSDUCER
Publication
Application
Priority
DE 3309236 A 19830315
Abstract (en)
[origin: EP0118837A2] 1. An ultrasonic transducer having a supporting body (2), a transmitting layer (4) of a material with a relatively high dielectric constant and high acoustic impedance and a first lambda/4 coupling layer (8) that faces the transmitting layer (4), and a second lambda/4 coupling layer that faces a load, characterised in that the second lambda/4 coupling layer also serves as a receiving layer (6) and that the first lambda/4 coupling layer (8) also serves as backing for the receiving layer (6).
IPC 1-7
IPC 8 full level
A61B 8/00 (2006.01); G01N 29/24 (2006.01); G10K 11/02 (2006.01); H04R 17/00 (2006.01)
CPC (source: EP)
G10K 11/02 (2013.01)
Citation (search report)
- [XP] US 4427912 A 19840124 - BUI TUAN S [AU], et al
- [Y] EP 0021534 A1 19810107 - PHILIPS NV [NL]
- [Y] US 4016530 A 19770405 - GOLL JEFFREY H
Designated contracting state (EPC)
AT DE FR GB
DOCDB simple family (publication)
EP 0118837 A2 19840919; EP 0118837 A3 19850515; EP 0118837 B1 19880622; AT E35338 T1 19880715; CA 1252558 A 19890411; DE 3309236 A1 19840920; DE 3472318 D1 19880728; JP H0453117 Y2 19921214; JP S59161800 U 19841030
DOCDB simple family (application)
EP 84102147 A 19840229; AT 84102147 T 19840229; CA 449456 A 19840313; DE 3309236 A 19830315; DE 3472318 T 19840229; JP 3404784 U 19840309