Welding torch with integral control

Details Welding torch with integral control Welding torch with integral control

1999-05-06

2000-04-18

Shaw, Clifford C.

Electric heating

Metal heating

By arc

219 75, B23K 910

Patent

active

060518081

ABSTRACT:
The invention is a welding parameter control device for a welding torch operable by the welders thumb and/or index finger. A forward-located rotary knob or belt is positioned where the torch is of relatively small diameter and comfortable for the welder to hold in the hand. This is coupled to a rotary potentiometer located toward the rear portion of the torch. Here the torch diameter can be increased without discomfort to the welder. By placing the potentiometer in this position it can be much larger and more rugged than would be possible if located at the position of the control knob. In contrast to the use of a highly miniaturized potentiometer at the control point location, failure rate is greatly reduced. Weld disturbance due to torch movement during current adjustment is virtually eliminated by use of the fingertip operated rotary control.

REFERENCES:
patent: 3968341 (1976-07-01), Manning
patent: 4051344 (1977-09-01), Robbins
patent: 4227066 (1980-10-01), Bulwidas, Jr.
patent: 4510373 (1985-04-01), Cox et al.
patent: 4948942 (1990-08-01), Hiibel

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