EP 0219837 A3 19880302 - APPARATUS AND CIRCUIT FOR THE CREATION OF VORTEX RINGS
Title (en)
APPARATUS AND CIRCUIT FOR THE CREATION OF VORTEX RINGS
Publication
Application
Priority
DE 3537856 A 19851024
Abstract (en)
[origin: US4735282A] A device for the generation of vortex rings which consists of a box supplied with orifices and electromechanic transformers. The electromechanic transformers are controlled by signalers and cause pressure waves within the box which form vortex rings at the orifices. As signalers low-frequency amplifiers can be used which send out music or speech signals or electronic circuits which form a kind of optimized signal.
IPC 1-7
IPC 8 full level
A63J 5/02 (2006.01)
CPC (source: EP US)
A63J 5/025 (2013.01 - EP US); A63J 2005/026 (2013.01 - EP US)
Citation (search report)
- [Y] US 2788607 A 19570416 - WARD DONALD R
- [Y] US 3806920 A 19740423 - ALLISON H
- [A] US 2628450 A 19530217 - SHELTON THOMAS M
- [A] GB 964802 A 19640722 - NORMAN HENRY JAMIESON
- [A] US 3294322 A 19661227 - KOREICHI KAWAMURA, et al
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0219837 A2 19870429; EP 0219837 A3 19880302; DE 3537856 A1 19870507; DE 3537856 C2 19880428; US 4735282 A 19880405
DOCDB simple family (application)
EP 86114464 A 19861018; DE 3537856 A 19851024; US 91799286 A 19861010