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US 7,022,935 B1Granted
Plasma-cutting torch with integrated high frequency starter
AssigneeIllinois Tool Works Inc.
InventorsTim A. Matus, Troy A. Sommerfeld, Joseph C. Schneider, James F. Ulrich
Life of this patent
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Abstract
The present invention is directed to a system including a plasma cutting torch having an output electrode and a plasma cutter starting circuit configured to generate a pilot arc at the output electrode.
Claims20
A plasma cutting torch comprising:
- a torch body;
- an output electrode disposed in the torch body;
- and
- a plasma cutter starting circuit disposed in the torch body and configured to generate a pilot arc signal in the torch body and deliver the pilot arc signal directly to the output electrode to cause generation of a pilot arc.
1 more element
A manufacturing kit comprising:
- a plasma cutting torch having an anode and a cathode and configured to operatively engage a power source;
- and
- a pilot arc starting circuit positioned in the plasma cutting torch and configured to supply the plasma cutting torch with a pilot arc voltage produced by the pilot arc starting circuit in the plasma cutting torch and necessary to generate a pilot arc between the anode and the cathode of the plasma cutting torch.
A plasma cutting assembly comprising:
- a plasma cutting torch;
- a power source providing at least operational power to the plasma cutting torch;
- and
- a starter circuit disposed within the plasma cutting torch and configured to receive the operational power from the power source and step up voltage of the operational power to a high-frequency, high voltage power within the plasma cutting torch to cause a pilot arc in the plasma cutting torch.
1 more element
Dependencies are inferred from the claim text.