Patent ID: 7218033

Claim:
A cavitation system, comprising: a cavitation chamber, wherein at least one wall of said cavitation chamber comprises a flat external surface; an acoustic driver assembly coupled to said cavitation chamber, comprising: at least one piezo-electric transducer; a tail mass adjacent to a first side of said at least one piezo-electric transducer; a head mass with a first end surface and a second end surface, wherein said first end surface of said head mass is adjacent to a second side of said at least one piezo-electric transducer and said second end surface of said head mass is adjacent to a portion of said flat external surface, wherein a first portion of said second end surface of said head mass is surrounded by a second portion of said second end surface of said head mass, wherein said first portion of said second end surface extends beyond said second portion of said second end surface, wherein said first portion of said second end surface is coupled to said second portion of said second end surface by a stepped region, and wherein said first portion of said second end surface defines a centrally located contact region between said head mass and said flat external surface; means for assembling said acoustic driver assembly; and means for attaching said acoustic driver assembly to said flat external surface.