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Cost effective cartridge for a plasma arc torch

  • US 10,582,605 B2
  • Filed: 08/12/2015
  • Issued: 03/03/2020
  • Est. Priority Date: 08/12/2014
  • Status: Active Grant
First Claim
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1. A cartridge for an air-cooled plasma arc torch, the cartridge comprising:

  • a swirl ring including;

    a molded thermoplastic elongated body having a substantially hollow portion, the molded thermoplastic elongated body having a distal end and a proximal end and configured to receive an electrode within the hollow portion, the elongated body defining a longitudinal axis extending between the proximal and distal end;

    a plurality of gas flow openings defined by the distal end of the elongated body and configured to impart a swirling motion to a plasma gas flow for the plasma arc torch; and

    a nozzle retention feature on a surface of the elongated body at the distal end for retaining a nozzle to the elongated body; and

    an electrically conductive cap affixed to the proximal end of the elongated body of the swirl ring, the cap substantially covering the proximal end of the elongated body along a radial plane perpendicular to the longitudinal axis.

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