Global Patent Index - EP 1238715 A1

EP 1238715 A1 2002-09-11 - Multifrequency ultrasonic structural actuators

Title (en)

Multifrequency ultrasonic structural actuators

Title (de)

Multifrequenz-Ultraschall-Betätigungsvorrichtung für Aufbaukomponente

Title (fr)

Actionneur structurel ultrasonique multifréquence

Publication

EP 1238715 A1 (EN)

Application

EP 01810227 A

Priority

EP 01810227 A

Abstract (en)

The propagation of ultrasonic energy in arbitrary shaped solid structures (D), heavy and very-thick-walls metal containers, pressurized reservoirs, very-thick metal-walls autoclaves, in different mechanical oscillating structures and systems,... is realized using a novel ultrasonic structural, multifrequency actuator (including very particular multifrequency ultrasonic power supply, also the subject of this invention), able to initiate ringing and relaxing, multimode mechanical oscillations (harmonics and sub harmonics) in any heavy-duty, bulky and rigid system, producing pulse-repetitive, phase, frequency and amplitude-modulated bulk-wave-excitation (covering and sweeping extremely large frequency area). Such ultrasonic driving is creating uniform and homogenous distribution of acoustical activity on a surface and inside of the vibrating system, while avoiding creation of stationary and standing waves structure, making that the complete vibrating system is fully agitated. Multifrequency ultrasonic structural actuator is ideal for agitating arbitrary distant and arbitrary shaped liquid and solid masses placed in different open or pressurized vessels, containers, autoclaves, reservoirs and pipes, transferring vibrations via wave-guide solid rod fixed betweem the transducer and a loading mass (where loading mass presents an oscillating body, and/or oscillating vessel, autoclave, container...). This invention presents an extension and continuation of the previous patent, originating from the same Author/Inventor (see 1 060 789 A1), explaining the additional aspects of particular electronics necessary to drive ultrasonic transducers in a multifrequency and multi-mode oscillating regime/s, while keeping high efficiency of electric and ultrasonic energy transfer and/or transformation. Fields o f possible applications related to this invention are: Ultrasonic Cleaning, Welding,Material Processing, Sonochemistry, Liquid Metals treatment, Atomization, Materials Testing, Aging and Stress Release, Homogenization, Process Industry, etc. <IMAGE>

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

B06B 1/02

IPC 8 full level (invention and additional information)

B06B 1/02 (2006.01)

CPC (invention and additional information)

B06B 1/0246 (2013.01); B06B 1/0276 (2013.01)

Citation (search report)

Designated contracting state (EPC)

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

EPO simple patent family

EP 1238715 A1 20020911

INPADOC legal status


2003-12-10 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20030312

2003-07-03 [REG DE 8566] DESIGNATED COUNTRY DE NOT LONGER VALID

2003-05-28 [AKX] PAYMENT OF DESIGNATION FEES

2002-09-11 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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

2002-09-11 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

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