Patent ID: 7735751

Claim:
An ultrasonic liquid delivery device comprising: a housing having an internal chamber and at least one exhaust port in fluid communication with the internal chamber of the housing whereby liquid within the chamber exits the housing at said at least one exhaust port; a valve member moveable relative to the housing between a closed position in which liquid within the internal chamber is inhibited against exhaustion from the housing via the at least one exhaust port, and an open position in which liquid is exhaustable from the housing via the at least one exhaust port; an ultrasonic waveguide separate from the housing and valve member, the waveguide being disposed at least in part within the internal chamber of the housing to ultrasonically energize liquid within the internal chamber prior to said liquid being exhausted from the housing through the at least one exhaust port in the open position of the valve member; and an excitation device operable in the open position of the valve member to ultrasonically excite said ultrasonic waveguide.