Patent ID: 6751333
Filing Date: 2004-06-15
Classification: B42D,B60R,G06F,G07F,H04R

Abstract:
An inertial vibration transducer for exciting bending waves in a lightweight sound-radiating member to produce an acoustic output, the sound-radiating member having capability to sustain and propagate input vibrational energy by bending waves in at least one operative area extending transversely of thickness to have resonant mode vibration components distributed over said at least one area, the transducer capable of coupling to said resonant mode vibration components and comprising:a motor coil assembly having a coil rigidly fixed to a tubular member, the tubular member adapted to be rigidly mounted directly to the sound-radiating member by adhesive means, a magnet assembly disposed concentrically with respect to the motor coil assembly, and a resilient suspension supporting the magnet assembly for axial movement relative to the motor coil assembly.