Title (en)

ULTRASONIC DEVICE

Publication

EP 0341505 A3 19900822 (DE)

Application

EP 89107664 A 19890427

Priority

DE 3815925 A 19880510

Abstract (en)

[origin: EP0341505A2] In order to induce ultrasonic oscillations in a liquid contained in a container, ultrasonic oscillators are bonded onto the outside of a wall serving as a diaphragm. Due to cavitation erosion, the seal on this wall is broken, which leads to the destruction of the entire device. In order to prevent this, it is proposed to attach a retaining ring near to the oscillation node on the ultrasonic oscillator, which then permits insertion into the container so that the ultrasonic oscillator acts with its sound-radiating cone directly on the liquid. <IMAGE>

IPC 1-7

B06B 3/00; B06B 1/06; B08B 3/12

IPC 8 full level

B06B 1/06 (2006.01); B08B 3/12 (2006.01); G10K 11/00 (2006.01)

CPC (source: EP)

B06B 1/0607 (2013.01); B06B 1/0618 (2013.01); B08B 3/12 (2013.01); G10K 11/006 (2013.01)

Citation (search report)

• [Y] US 3331589 A 19670718 - HAMMITT FREDERICK G, et al
• [Y] FR 1129615 A 19570123 - REALISATIONS ULTRASONIQUES SA
• [Y] US 2910390 A 19591027 - GRUETTNER GERHARD G, et al
• [A] US 3885172 A 19750520 - MILLER DONALD E
• [A] US 4031503 A 19770621 - MINAMI HIROSHI

Designated contracting state (EPC)

AT BE CH ES FR GB IT LI NL SE

DOCDB simple family (publication)

DE 3815925 C1 19890420; EP 0341505 A2 19891115; EP 0341505 A3 19900822; FI 892226 A0 19890509; FI 892226 A 19891111; FI 99089 B 19970630; FI 99089 C 19971010

DOCDB simple family (application)

DE 3815925 A 19880510; EP 89107664 A 19890427; FI 892226 A 19890509