Patent ID: 6882087
Filing Date: 2005-04-19
Classification: B08B,G10K,H04R

Abstract:
1. A transducer comprising: an acoustic energy generating means for generating acoustic energy and for delivering an approximately uniform amount of acoustic energy in a given time period to each unit of surface area on a particular surface of a substrate to be exposed to the acoustic energy when a relative rotational motion about an axis of rotation exists between the substrate and the transducer, the acoustic energy generating means including a design feature that corrects for the increase in linear velocity of points on the particular surface with increasing distance from the axis of rotation, the acoustic energy generating means overlying less than 100% of the particular surface; a vessel for holding the acoustic energy generating means, the vessel surrounding the acoustic energy generating means and protecting the acoustic energy generating means from a process fluid, with at least a part of the vessel acting to transmit the acoustic energy to the substrate through the process fluid; and an attachment layer positioned between the acoustic energy generating means and the vessel for attaching the acoustic energy generating means to the vessel.