Patent ID: 7474036

Claim:
A high capacity composite oscillating device comprising: a disk-shaped oscillating body having a center which serves as an oscillation loop; n sets of bolt-tightened Langevin-type ultrasonic transducers (BLTs) having the identical vibration characteristics disposed at regular intervals on an outer periphery portion of said disk-shaped oscillating body so as to oppose each other, and; n phase shifters for shifting the phase of an input to said n sets of BLTs by π/n; wherein n is a positive integer greater than or equal to two, and; wherein said BLTs are driven in such a manner that said opposed BLTs are driven in an opposite-phase mode respectively, and said adjacent sets of BLTs are driven in an oscillating mode in which the phase is shifted by π/n, so that composite oscillations occur at the center portion of said disk-shaped oscillating body.