Patent ID: 7228606

Claim:
Method of manufacturing a piezoelectric transducer, comprising: encasing piezoelectric fibers or fiber segments having a longitudinal axis with a respective orientation each with a liquid polymer substance wherein said orientations of longitudinal axes of said fibers or fiber segments have a distribution about a preferential direction so that said fibers or fiber segments are not in a mutual array; curing the polymer substance with the fibers or fiber segments so as to form a composite structure; processing the composite structure so as to expose areas of said fibers or fiber segments along said preferential direction; and applying electrical contacts for controlling the transducer on at least one part of said exposed areas; wherein said fibers or fiber segments being compressed among each other prior to curing, wherein said processing is carried out by separation in planes along said preferential direction, and wherein substantially straight fiber or fiber segments are encased with said liquid polymer substance in such a way that at least 50% of said fibers or fiber segments in said polymer substance vary, along their length, by at least one fiber diameter from said preferential direction.