Patent ID: 6618487
Filing Date: 2003-09-09
Classification: H04R

Abstract:
An electro-dynamic inertial vibration exciter (1) for exciting a member (2) having capability to sustain and propagate input vibrational energy comprising a motor coil assembly (3, 4) having a coil (3) rigidly fixed to a tubular coil former member (4), a magnet assembly (5, 6, 7) disposed concentrically with respect to the motor coil assembly and movable axially relative to the motor coil assembly, an axially compliant suspension (11) for the magnet assembly, and a carrier (9) supporting the motor coil assembly (3, 4) and adapted for connection to the member (2) to be excited, further comprising a coupling member (12) adapted to interfit with the magnet assembly (5, 6, 7), and wherein the suspension (11, 23, 24) is connected between the carrier (9) and the coupling member (12).