An ultrasonic nozzle includes an atomizing surface for producing an atomized liquid spray; a liquid-feed passageway for supplying the process liquid to the atomizing surface, the passageway having a first diameter section and a second fluidly connected smaller diameter section, with a shoulder defined...http://www.google.es/patents/US4930700?utm_source=gb-gplus-sharePatente US4930700 - Ultrasonic dispersion nozzle having internal shut-off mechanism with barrier fluid separation
Ultrasonic dispersion nozzle having internal shut-off mechanism with barrier ...
