An ultrasonic apparatus and method for increasing the flow rate of a pressurized liquid through an orifice by applying ultrasonic energy to a portion of the pressurized liquid. The apparatus includes a die housing which defines a chamber adapted to receive a pressurized liquid and a means for...http://www.google.de/patents/US5803106?utm_source=gb-gplus-sharePatent US5803106 - Ultrasonic apparatus and method for increasing the flow rate of a liquid through an orifice 
