Patent ID: 9114483
Filing Date: 2015-08-25
Classification: B23K

Abstract:
1. A wire feeder for conveying associated welding wire, comprising: a wire feeder having one or more drive rollers, the one or more drive rollers being adapted to push the associated welding wire toward the welding gun; a welding gun operatively connected to the wire feeder for conveying associated welding wire used in arc welding, the welding gun having at least one drive roller within the welding gun to pull the welding wire toward an egress aperture in the welding gun, the at least one drive roller within the welding gun having a generally U-shaped idle arm in operative connection with an idler drive roll, a tension between the idle arm and idler drive roll controlled by a tensioned adjustment screw on the idler arm; the wire feeder having one or more drive rollers and the welding gun having at least one drive roller within the welding gun being separated by a length of cable within which the welding wire is disposed therein; at least a first driver motor operatively connected to deliver power for rotating the one or more drive rollers in the wire feeder; at least a second driver motor operatively connected to deliver power for rotating the at least one drive roller in the welding gun; and, one or more bearings positioned between the one or more drive rollers in the wire feeder and the at least one drive roller within the welding gun, said one or more bearings coaxial with each of said one or more drive rollers, wherein each of the one or more bearings is electrically non-conducting for preventing the discharge of electrical energy across the one or more bearings.