Electric heating – Metal heating – By arc
Patent
1984-05-18
1985-04-02
Shaw, Clifford C.
Electric heating
Metal heating
By arc
219136, 21913771, B23K 910
Patent
active
045089540
ABSTRACT:
A portable wirefeed and control apparatus for use in consumable electrode arc welding systems which is capable of being powered by conventional AC or DC variable voltage or variable current supplies without modification of the power supply or the wirefeed and control apparatus. The portable wirefeed unit incorporates a wirefeed motor, a supply of weld wire, optional gas controls, and voltage regulating and protective control circuits all powered at welding arc voltage carried by the welding current supply conductor. The unit is circuit connected to the power supply by means of a single welding electrode supply conductor and a ground return. Electrode power, weld wire, optional shielding gas supply and welding gun control switch conductors are carried in a single flexible conduit extending between the control unit and a remote welding gun and wirefeed speed and thus wirefeed rate are partially responsive to variations in welding arc voltage.
REFERENCES:
patent: 3248516 (1966-04-01), Gilliland
patent: 3627977 (1971-12-01), Aldenhoff
patent: 4119830 (1978-10-01), Gilliland
patent: 4147919 (1979-04-01), Matasovic
Oxo Welding Equipment Co., Inc.
Shaw Clifford C.
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