Patent ID: 6218766
Filing Date: 2001-04-17
Classification: B06B,H04R

Abstract:
An assembly for utilization in a loudspeaker system comprising:at least one piezoelectric element capable of being excited by applied electric potential, said piezoelectric element having an upper side, an under side and an outer perimeter,a diaphragm that is driven by the excited piezoelectric element, said diaphragm having opposed faces and a surface are that is at least 20 times the surface are of the piezoelectric element, wherein at least some of the under side of the piezoelectric element is attached to one face of said diaphragm; andat least one motion coupler having an upper side and an under side and an outer edge, which motion coupler is attached by at least a portion of its outer edge to at least a portion of the outer perimeter of the piezoelectric element and on its under side to said one face of the diaphragm, wherein the total surface area of all motion couplers is at least about 0.75 times the surface area of the piezoelectric element.