EP 0478611 B1 19940119 - WIDE-RANGE ULTRASONIC TRANSDUCER.
Title (en)
WIDE-RANGE ULTRASONIC TRANSDUCER.
Title (de)
BREITSTRAHLENDER ULTRASCHALLWANDLER.
Title (fr)
TRANSDUCTEUR D'ULTRASONS A LARGE BANDE.
Publication
Application
Priority
DE 3920663 A 19890623
Abstract (en)
[origin: WO9100153A1] Disclosed is a wide-range ultrasonic transducer of sandwich construction, comprising piezo-ceramic laminae (2), fitted with electrodes, and plates/films (3, 13) in the shape of a parallelepiped with a width (B) to length (L) ratio of 0,42 and in which the relative thicknesses of the piezo-ceramic laminae and the plates/films are chosen such that one side surface of the parallelepiped undergoes co-phasal oscillations.
IPC 1-7
IPC 8 full level
H04R 17/00 (2006.01); B06B 1/06 (2006.01)
CPC (source: EP US)
B06B 1/0644 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI
DOCDB simple family (publication)
WO 9100153 A1 19910110; DE 3920663 A1 19910110; DE 59004358 D1 19940303; EP 0478611 A1 19920408; EP 0478611 B1 19940119; JP H04502543 A 19920507; JP H0787639 B2 19950920; US 5254900 A 19931019
DOCDB simple family (application)
DE 9000478 W 19900622; DE 3920663 A 19890623; DE 59004358 T 19900622; EP 90909133 A 19900622; JP 50861690 A 19900622; US 77881791 A 19911218