The plasma welding or cutting system comprises in particular a torch (2), a nozzle (3), a gas supply for the torch for supplying the torch with a plasma-producing gas, and an electrical supply for the torch for creating, maintaining or breaking an electric plasma welding or cutting arc. According to...http://www.google.com/patents/US4692582?utm_source=gb-gplus-sharePatent US4692582 - Plasma welding or cutting system provided with a delay
