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Apparatus and Method for a Liquid Cooled Shield for Improved Piercing Performance

  • US 20090230095A1
  • Filed: 09/29/2008
  • Published: 09/17/2009
  • Est. Priority Date: 03/12/2008
  • Status: Active Grant
First Claim
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1. A retaining cap for a plasma arc torch comprising:

  • an outer component having an interior surface and an exterior surface which defines, at least in part, a first liquid coolant channel;

    an inner component circumferentially disposed within the outer component and having an exterior surface and an interior surface which defines, at least in part, a second liquid coolant channel;

    a gas flow channel defined at least in part by the interior surface of the outer component and the exterior surface of the inner component; and

    a port located at an end of the gas flow channel between the interior surface of the outer component and the exterior surface of the inner component.

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