Electro mechanical contactor device for welding wire feeder

Details Electro mechanical contactor device for welding wire feeder Electro mechanical contactor device for welding wire feeder

2005-02-03

2008-08-05

Jackson, Stephen W (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit interruption by thermal sensing

Reexamination Certificate

active

07408756

ABSTRACT:
An electro mechanical contactor device in a wire feeder for an electric arc welder having a power source and a gun with a contact tip through which welding wire is fed and a weld cycle start trigger switch having a closed condition to initiate and hold a weld cycle and an open condition. The contactor device comprises a power inlet lead connected to the power source, an output lead connected to the contactor tip, a plurality of current branches between the input lead and the output lead with a mechanical contactor having an open condition and closed condition for opening and closing each of the branches. A single solenoid operating the contactors in unison based upon the condition of the trigger switch, with a first position to close the contactors in unison when said trigger switch is shifted from the open condition to the closed condition and to hold the contactors closed when the trigger switch is in the closed condition.

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patent: 2002/0135237 (2002-09-01), Baker
patent: 2004/0089645 (2004-05-01), Saccon

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