US Patent 7379392 Flexible cymbal array

A cymbal array for underwater vehicle applications includes piezoelectric discs disposed in a line, a first flex circuit comprising first annular members each affixed to a first side of one of the discs, a first series of cymbal caps each mounted on one of the first annular members, a second flex circuit comprising second annular members each fixed to a second side of one of the discs, and a second series of cymbal caps each mounted on one of the second annular members. The flex circuits each comprise an electrically conductive layer disposed between two electrically insulative layers.