Global Patent Index - EP 1050347 A2

EP 1050347 A2 2000-11-08 - Ultrasonic transducer

Title (en)

Ultrasonic transducer

Title (de)

Ultraschallwandler

Title (fr)

Transducteur ultrasonore

Publication

EP 1050347 A2 (EN)

Application

EP 99810540 A

Priority

KR 19990015913 A

Abstract (en)

The present invention deals with an ultrasonic transducer mounted on the bottom or side surface of the cleaning tank of an ultrasonic cleaner. The ultrasonic transducer of the present invention includes: piezoelectric ceramics, electrodes for applying power to the piezoelectric ceramics, masses to be vibrated by the piezoelectric ceramics, a fastening means with a stud and a nut. and the front mass with various geometry vertical slits on its upper surface. The front mass has the recesses (vertical slits) on its top surface in order to improve the longitudinal mechanical quality factor ("Qmeff") of piezoelectric ceramics determining the cleaning efficiency of the ultrasonic cleaner. Preferably, the width of the recesses is 1 SIMILAR 2 mm and the depth is 1/3 SIMILAR 1/2 of the longitudinal length of the front mass. <IMAGE>

IPC 1-7 (main, further and additional classification)

B06B 1/06; B08B 3/12

IPC 8 full level (invention and additional information)

B08B 3/12 (2006.01); B06B 1/06 (2006.01); B06B 3/00 (2006.01)

CPC (invention and additional information)

B06B 3/00 (2013.01); B06B 1/0618 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 1050347 A2 20001108; EP 1050347 A3 20020724; KR 100346492 B1 20020726; KR 20000072947 A 20001205

INPADOC legal status


2002-09-11 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020103

2002-07-24 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2002-07-24 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI

2002-07-17 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7B 06B 1/06 A, 7B 08B 3/12 B, 7B 06B 3/00 B

2000-11-08 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-11-08 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI