Patent ID: 6761290
Filing Date: 2004-07-13
Classification: B05C,H01F

Abstract:
An electrically-operated dispensing module for dispensing adhesive onto a substrate, comprising:a main body having an outlet canal capable of receiving adhesive and an outlet opening for discharging adhesive flowing through said outlet canal onto the substrate; a pole piece positioned within said main body; a valve assembly positioned within said outlet canal, said valve assembly having a valve seat and a valve body movable relative to said valve seat between a closed position interrupting a flow of adhesive in said outlet canal by engaging said valve body with said valve seat and an open position releasing the flow of adhesive in said outlet canal to said outlet opening by disengaging said valve body from said valve seat; an electromagnetic drive unit capable of generating a magnetic field for moving said valve body relative to said pole piece between said closed and open positions; and a flux element positioned proximate to said electromagnetic drive unit, said flux element including a slit capable of interrupting circumferential electrical current paths therein, said slit being filled with an electrically-insulating synthetic material.