This ultrasonic atomizer includes an oscillating member, a means for vibrating the oscillating member at a supersonic frequency, a bottle for liquid storage, with an opening, fitted generally above the oscillating member with regard to the preferred orientation of the atomizer during use, and a nozzle...http://www.google.com.tw/patents/US4793339?utm_source=gb-gplus-share專利 US4793339 - Ultrasonic atomizer and storage bottle and nozzle therefor
