Improved contactor for welding wire feeder

Details Improved contactor for welding wire feeder Improved contactor for welding wire feeder

B - Operations, Transporting

23

K

B23K 9/133 (2006.01) B23K 9/24 (2006.01)

Patent

CA 2549806

Portable welding wire feeders for providing welding wire and power to a welding torch, including a contactor with first and second copper or tellurium copper terminal studs, a conductive bridge member movable to electrically connect or isolate the terminals, and an actuator to control movement of the bridge according to a control signal. The contactor may also include a thermal sensor and the wire feeding apparatus may include a control circuit to provide the contactor control signal according to a temperature signal from the thermal sensor and according to a trigger signal from a welding torch.

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