Patent ID: 7799146

Claim:
An ultrasonic apparatus, including: a sonotrode shaft at least substantially surrounded by a distensible bladder to be placed within the inside of a container, the distensible bladder having an inside surface and an outside surface; an ultrasonic generator connected to the sonotrode shaft; and an ultrasonic transducer connected to the ultrasonic generator and associated with the sonotrode shaft; the container containing a first liquid, the distensible bladder containing a second liquid, the sonotrode shaft being at least partially surrounded by the second liquid, the distensible bladder being positioned between the first and second liquids, the inside surface of the distensible bladder being in contact with the second liquid and the outside surface of the distensible bladder being in contact with the first liquid, so that the sonotrode shaft is in direct contact with the second liquid and not the first liquid.