Patent ID: 7094990

Claim:
A contact nozzle for electric arc welding with continuous welding wire flowed through by welding current, which nozzle can be connected to a welding torch and comprises an electrically conductive contact tube with a longitudinal through-hole for passage of the welding wire during welding from an inlet end to an outlet end in said longitudinal hole, and a spring element arranged to apply a force to the welding wire in a direction essentially transverse to feed direction of the wire to press the welding wire against an inside of the contact tube, wherein the longitudinal hole has a first portion of length with a certain cross-sectional area at the inlet end and a second portion of length with a smaller cross-sectional area than the first, the spring element has been mounted from the inlet end in the first portion of length of the longitudinal hole, and additionally comprising means for preventing electric contact between the wire and said outlet end of said longitudinal through-hole.