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Dual mode plasma arc torch

  • US 6,936,786 B2
  • Filed: 11/24/2003
  • Issued: 08/30/2005
  • Est. Priority Date: 02/26/2002
  • Status: Expired due to Term
First Claim
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1. A start cartridge for use in a high frequency start plasma arc torch, the start cartridge providing separation and electrical isolation between an electrode and a tip in the plasma arc torch comprising:

  • a plurality of vent holes, the vent holes further comprising outer vent holes and inner vent holes such that a velocity of the gas is increased as the gas flows from the outer vent holes to the inner vent holes, wherein the vent holes provide gas flow to cool the electrode.

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