Portable AC/DC wire feed welder

Details Portable AC/DC wire feed welder Portable AC/DC wire feed welder

1994-05-02

1995-04-25

Shaw, Clifford C.

Electric heating

Metal heating

By arc

B23K 910

Patent

active

054101263

ABSTRACT:
In a preferred embodiment, a portable wire feed electric arc welder, including a cabinet, a welding gun connected to the cabinet through a flexible conduit, and a supply mechanism to continuously feed the wire to the welding gun. There is a mechanism to receive either AC or DC power into the welder and a selector mechanism to selectively switch between a first mode of operation in which welding is performed with an external DC source, a second mode of operation in which welding is performed with an external AC source, and a third mode of operation in which welding is performed with an internal AC source. The internal AC source includes a step-down transformer connected to a conventional 115 VAC power source.

REFERENCES:
patent: 4508954 (1985-04-01), Kroll
patent: 4590357 (1986-05-01), Winkler
patent: 4705934 (1987-11-01), Winkler
patent: 4801780 (1989-01-01), Hayes
patent: 5086208 (1992-02-01), Habermann
patent: 5250786 (1993-10-01), Kikuchi et al.
patent: 5260545 (1993-11-01), West et al.

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