Patent ID: 6890388

Claim:
A method for cleaning one or more surfaces of an object, the method comprising: placing an object to be cleaned on a conveyor comprising at least two belts, wherein the object includes a front surface, a back surface, a first lateral edge and a second lateral edge, so that a first of the two belts is in frictional contact with a portion of the front surface of the object and a second of the two belt is in frictional contact with a portion of the back surface of the object while simultaneously exposing at least a portion of the first lateral edge and the second lateral edge for cleaning; spraying a liquid through at least one jet onto at least one surface of at least one object to be cleaned; and insonifying the liquid, with a focusing acoustic transducer, as it is being sprayed, producing longitudinal and shear waves which propagate into the object itself with an acoustic power divided by an area (acoustic power/area), which is a function of an amount of electric power applied to the focusing acoustic transducer at a given frequency to result in the liquid with an insonified power density without substantial cavitation occurring on a surface of an object being cleaned.