Sleeve for a coaxial welding cable with surface undulations for improved flexibility to facilitate manipulation during long duration welding operations

摘要

A sleeve (10, 20) for a Metal Inert Gas - Metal Argon Gas (MIG-MAG) welding coaxial cable (1), destined to receive in its central part some means for the transport of the welding current (5), of the protective welding gas (4), of the welding wire (2, 3) and of the control signal from the trigger (6), has some undulations (11, 12) at least on a part of its external surface. The undulations may be in the form of annular waves or may have a helicoidal structure (both claimed). An independent claim is also included for a coaxial welding cable provided with this sleeve.