Patent ID: 8077902
Filing Date: 2011-12-13
Classification: H04R

Abstract:
1. An acoustic transducer comprising: a housing defining at least one stationary electrical contact; a magnet assembly fixedly mounted in said housing and defining an air gap extending around a central axis; a voice coil having at least one electric terminal; spider means for suspending said voice coil for axial movement in said air gap, said spider means comprising: at least one flat electrically conductive path formed on said dielectric sheet extending from said outer end adapted for connection to said stationary contact to a connection location on said flexure portion adapted for connecting to said electric terminal; wherein said flexure portion comprises a concentric outer ring a concentric inner ring; and wherein said sheet of dielectric material defines a set of links connecting said outer ring to said inner ring and wherein said flexure portion further comprises a concentric intermediate ring disposed in between said concentric outer and inner rings; and wherein said set of links connecting said outer ring to said inner ring comprises a first set of radial links connecting said outer ring to said intermediate ring and a second set of radial links connecting said intermediate ring to said inner ring.