Electric heating – Metal heating – For bonding with pressure
Patent
1991-01-28
1992-07-07
Shaw, Clifford C.
Electric heating
Metal heating
For bonding with pressure
219 81, 219113, B23K 1126
Patent
active
051285118
ABSTRACT:
A welding apparatus is disclosed to include an electrically insulating casing, first and second welding electrodes, and one or more welding transformer cores having toroidal cores, multi-turn primary windings and a single-turn secondary winding. The cores include a grain-oriented silicon steel material coiled with an insulator. The primary windings have turns axially wound about the cores. The secondary windings include at least two conductive arm sections which are connected to the electrodes and a wound section including conductive wire cable which electrically connects the two arm sections. One of the arm sections can provide the frame member to support the transformer. The apparatus is suitable for spot or linear welding.
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PCT Search Report for PCT/ep90/00339.
Landau Norman St.
Pulsair Anstalt
Shaw Clifford C.
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