Patent ID: 6066835
Filing Date: 2000-05-23
Classification: B23K

Abstract:
A welding lead assembly for use with a metal inert gas welding system to operatively couple a welding gun through an electrode feed unit of the metal inert gas welder to a power supply and an inert gas supply, said welding lead assembly includes a welding lead having an inner flexible inert gas conduit coaxially disposed within a flexible electrical conductor and a plurality of electrode feed control elements to selectively supply inert gas and electrical power to the electrode feed unit through said inner flexible inert gas conduit and said flexible electrical conductor respectively and control signals between the welding gun and the power supply and inert gas supply through said electrode feed control elements to control operation of the metal inert gas welding system, said inner flexible inert gas conduit being in heat transfer relationship within said flexible electrical conductor to cool said flexible electrical conductor during operation of said welding lead assembly.