Patent ID: 6946616

Claim:
A plasma arc torch comprising: a central body disposed within the plasma arc torch, the central body defining angled passages, central axial passages, distal axial passages, and proximal axial passages; an anode shield disposed adjacent the central body; an inner cooling chamber formed between the central body and the anode shield; a baffle disposed adjacent the anode shield; an outer fluid passage formed between the anode shield and the baffle; a shield cap disposed adjacent the baffle; a secondary fluid passage formed between the baffle and the shield cap; a tip disposed in a distal portion of the central body; an electrode disposed adjacent the tip; a plasma chamber formed between the tip and the electrode; a secondary spacer disposed adjacent the tip; and a secondary fluid plenum formed between the tip and the secondary orifice, wherein, a plasma fluid flows distally through the distal axial passages in the central body and into the plasma chamber; a secondary fluid flows distally through the proximal axial passages in the central body, into the secondary fluid passage, and into the secondary fluid plenum; and a cooling fluid flows distally through the angled passages in the central body and into the inner cooling chamber, and flows proximally through the outer fluid passage and through the central axial passages.