US 11,897,059 B2
Current limiting secondary contact
Mark Richard Christopher, Neenah, WI (US); and John Walter Lundin, Appleton, WI (US)
Assigned to Illinois Tool Works Inc., Glenview, IL (US)
Filed by Illinois Tool Works Inc., Glenview, IL (US)
Filed on Feb. 22, 2019, as Appl. No. 16/283,367.
Claims priority of provisional application 62/635,208, filed on Feb. 26, 2018.
Prior Publication US 2019/0262926 A1, Aug. 29, 2019
Int. Cl. B23K 9/067 (2006.01); B23K 9/073 (2006.01); B23K 9/10 (2006.01)
CPC B23K 9/067 (2013.01) [B23K 9/0731 (2013.01); B23K 9/1093 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A welding-type system comprising:
a welding torch comprising a contact tip to provide an electrode wire;
a secondary contact in electrical contact with the electrode wire, the secondary contact located along a length of the electrode wire and before the contact tip, wherein each of the contact tip and the secondary contact are connected to a welding-type power source; and
a current limiting device coupling located between the welding-type power source and the secondary contact and configured to limit a current at the secondary contact.