Spot welder

Details Spot welder Spot welder

1989-08-18

1990-10-16

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

219 867, B23K 1110

Patent

active

049637126

ABSTRACT:
A spot welder comprising a movable truck which is movable along a workpiece, and first, second and third electrodes supported on the truck. The first and second electrodes are adapted to pair with each other for series welding, and one of the first and second electrodes is adapted to pair with the third electrode for indirect welding. Depending on the state of the site of the weld, welding can be performed by selectively using either series or indirect-spot welding. Mechanisms are provided for easily and rapidly switching between the two welding types.

REFERENCES:
patent: 3415973 (1968-12-01), Verbeck
Converter Power Supplies, by Chet Shira, Title: Welding Design & Fabrication, 6/85, p. 52.
Kawasaki Heavy Industries Technical Review No. 100, published Aug., 1988.

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