EP 1911530 B1 20090722 - Ultrasound converter with acoustic impedance adjustment
Title (en)
Ultrasound converter with acoustic impedance adjustment
Title (de)
Ultraschallwandler mit akustischer Impedanzanpassung
Title (fr)
Transducteur à ultrasons doté d'une adaptation d'impédance acoustique
Publication
Application
Priority
CH 16072006 A 20061009
Abstract (en)
[origin: EP1911530A1] The transducer (1) has a matching layer (5) that is made of a cross linked polyurethane hard foam and is connected to a piezo-ceramic disc (3). The hard foam has a hollow ball made of glass or plastic and is filled with a light filler material. The matching layer has a density in a range of 400 to 900 kilogram per meter cube, and is stable up to a temperature of 120 degree Celsius. The matching layer or transducer is coated with a protected layer in an area of a sonic radiation surface (8).
IPC 8 full level
B06B 1/06 (2006.01); G10K 9/122 (2006.01)
CPC (source: EP)
G10K 11/02 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1911530 A1 20080416; EP 1911530 B1 20090722; DE 502007001104 D1 20090903
DOCDB simple family (application)
EP 07405233 A 20070813; DE 502007001104 T 20070813