Patent ID: 7376237
Filing Date: 2008-05-20
Classification: H02K,H04R

Abstract:
1. A vibrator system for generating bone conduction vibrations, comprising: a housing having a magnet in a wall thereof and a vibrator disposed therein, the magnet providing a static magnetic flux (Φ a bobbin being centered in the vibrator; the housing enclosing the bobbin, the housing having a coil wound around a center portions of the bobbin, the coil being powered by an alternating current for providing an alternating dynamic magnetic flux (Φ the housing having an upper end, the upper end and the bobbin having a first gap formed therebetween; the housing having a lower end opposite the upper end, the lower end and the bobbin having a second gap formed therebetween; the static magnetic flux (Φ suspension means for suspending the bobbin in a centered position inside the housing.