Patent ID: 7802687

Claim:
A coating powder sieving device, the device comprising: a screen portion for sieving a coating powder, wherein the screen portion includes a screen frame and a screen retained by the screen frame and having a screen surface; the screen frame and screen surface defining a generally quadrangular shape; a screen support portion supporting the screen portion, including the screen frame and the screen surface, generally in a direction perpendicular to the screen surface; and an ultrasonic probe coupled to the screen portion, including the screen frame and the screen surface, with a coupling extending between the ultrasonic probe and the screen portion such that the ultrasonic probe excites vibrations in the screen surface and the screen frame via the coupling, wherein the screen is directly supported vertically solely by the screen support and the ultrasonic probe; and a vibration absorbing element positioned laterally with respect to the screen frame such that the vibration absorbing element absorbs vibrations of the screen frame in a direction generally parallel to the screen surface, wherein the vibrations in the screen surface and the screen frame occur at least substantially in a direction perpendicular to the screen surface; wherein the screen and screen frame are vibrated exclusively by the ultrasonic probe.