Patent ID: 7963458

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; an ultrasonic waveguide separate from the housing 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; said waveguide comprising a valve member movable 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 permitted to exit from the housing via the at least one exhaust port; and an excitation device operable in the open position of the valve member to ultrasonically excite said ultrasonic waveguide, wherein at least a portion of the excitation device is disposed within the internal chamber of the housing.