Patent ID: 6166998
Filing Date: 2000-12-26
Classification: B06B,G10K,H04R,Y10T

Abstract:
A method of manufacturing an electro-acoustic transducer comprising forming a transducer assembly comprising at least one piezo-electric element, electrical connections to the assembly, and acoustic loading blocks, one of which forms the front of the assembly, and applying successive superposed moldings of material of differing acoustic properties around said transducer assembly to form the transducer, while maintaining electrical coupling between the electrical connections to the transducer assembly and a location exterior of the transducer, the moldings providing at least one acoustic matching layer covering a radiating surface of the transducer assembly, a casing surrounding the remainder of the transducer assembly, and at least two layers of material including a layer of acoustic isolating material between the casing and the transducer assembly;wherein successively applied preformed moldings are shaped such that they do not completely envelop the assembly thus allowing for easy application to the assembly of the moldings used to form those layers.