Welding apparatus and transformer therefor

Details Welding apparatus and transformer therefor Welding apparatus and transformer therefor

1990-02-06

1991-07-09

Shaw, Clifford C.

Electric heating

Metal heating

For bonding with pressure

219 81, 336175, 336213, 336219, B23K 1124

Patent

active

050308130

ABSTRACT:
A welding apparatus is disclosed to include an electrically insulating casing, first and second welding electrodes, and a welding transformer having a toroidal core, a multi-turn primary winding and a single-turn secondary winding. The core includes a grain-oriented silicon steel material coiled with an insulator. The primary winding has turns axially wound about the core. The secondary winding includes 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.

REFERENCES:
patent: 1273203 (1918-07-01), Thomson
patent: 3154757 (1964-10-01), Hannon
patent: 3211885 (1965-10-01), Fischer
patent: 4496821 (1985-01-01), Burgher et al.
patent: 4814736 (1989-03-01), Lee et al.

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