The design parameters and operation of a new type of ultrasonic resonator are described. The resonator consists of a solid cylindrical body that contains a centrisimetric conic cavity and is driven by a piezoelectric disk bonded to the base of the body. The system thus generated vibrates in a radial mode, and the maximum amplitude is measured at the rim of the system. Optimum vibration conditions are obtained when the ratio of height to radius of the resonator is 1.24. An approximate equation is derived for the frequency of vibration as a function of the properties of the material and the physical dimensions. A number of models were constructed, and their capabilities as atomizers were studied. Aerosol conversion capabilities were found to be in excess of 1350 ml of waterlike liquid per minute with an aerosol‐generating area of approximately 24 cm2for the fundamental‐mode‐type resonator. The edsign of fourth enharmonic resonators whose cross sections are similar to the ones described is discussed briefly.