An ultrasonic wave nebulizer for converting water or liquid to mist has a disc-shaped piezoelectric vibrator (TD) which has a pair of surfaces one of which is defined as an operation surface. A thin plate (21) having a plurality of small holes or mesh is located close to the operation surface so that...http://www.google.fr/patents/US5312281?utm_source=gb-gplus-shareBrevet US5312281 - Ultrasonic wave nebulizer
