EP 0017216 B1 19830119 - ULTRASONIC TRANSDUCER
Title (en)
ULTRASONIC TRANSDUCER
Publication
Application
Priority
DE 2914031 A 19790406
Abstract (en)
[origin: US4354132A] In exemplary embodiments, a transmitting layer of material having a relatively high dielectric constant and high acoustic impedance, and a receiving layer of material having a relatively low dielectric constant and low acoustic impedance are superimposed such that an optimum construction is provided which simultaneously creates optimum results for the instance of transmission and reception. The two layers are interconnected by means of hybrid techniques such that they mate in a laminar manner.
IPC 1-7
IPC 8 full level
A61B 8/00 (2006.01); B06B 1/06 (2006.01); G10K 11/02 (2006.01); H04R 1/22 (2006.01); H04R 17/00 (2006.01)
CPC (source: EP US)
B06B 1/0688 (2013.01 - EP US); G10K 11/02 (2013.01 - EP US); H04R 17/00 (2013.01 - EP US); Y10S 310/80 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE FR GB LI NL
DOCDB simple family (publication)
US 4354132 A 19821012; AT E2293 T1 19830215; AU 5715680 A 19801009; CA 1154861 A 19831004; DE 2914031 B1 19800514; DE 2914031 C2 19810115; DE 3061665 D1 19830224; EP 0017216 A2 19801015; EP 0017216 A3 19801112; EP 0017216 B1 19830119; JP S55140392 A 19801101; JP S5856320 B2 19831214
DOCDB simple family (application)
US 12537180 A 19800228; AT 80101743 T 19800401; AU 5715680 A 19800403; CA 349174 A 19800403; DE 2914031 A 19790406; DE 3061665 T 19800401; EP 80101743 A 19800401; JP 4402880 A 19800403