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US 8,217,305 B2Granted
System and method for improved TIG arc starting
AssigneeIllinois Tool Works Inc.
InventorRichard Hutchison
Life of this patent
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Abstract
A system and method for performing a welding-type process includes a welding-type torch having a first electrode connected to receive a welding-type power to effectuate a welding-type process. The welding-type torch also includes a second electrode connected to receive a starting power to initiate the welding-type process and a nozzle surrounding at least a portion of the first electrode.
Claims7
A welding torch assembly comprising:
- a first electrode having a first diameter and formed of a first material capable of receiving a welding power and effectuating a welding process;
- a second electrode having a second diameter, which is less than the first diameter, and formed of a second material configured to initiate a corona discharge proximate to the first electrode to initiate the welding process between the first electrode and a workpiece;
- a nozzle surrounding at least a portion of the first electrode and at least a portion of the second electrode;
- and
- a back cap detachably supporting the nozzle, the first electrode, and the second electrode.
2 more elements
Dependencies are inferred from the claim text.