Patent ID: 6528750
Filing Date: 2003-03-04
Classification: B23K

Abstract:
Apparatus for fusing an insulated wire to a metal terminal comprisinga frame, an upper fusing electrode mounted on said frame and comprising a first fusing surface, a lower fusing electrode mounted on said frame and comprising a second fusing surface, moving means for moving at least one of said upper and lower electrodes relatively toward each other so that, when the terminal and insulated wire are placed between said first and second fusing surfaces, said surfaces apply increasing fusing pressure to the terminal and wire, power means for heating said surfaces to a fusing temperature by applying current through each of said electrodes along current paths generally along the direction of each of the fusing surfaces to substantially avoid current flow through the terminal and wire even during fusing thereof, and control means for sensing the temperature of an electrode zone near said first or second fusing surface and controlling the power means to vary the amount of said current over time through at least one of said electrodes in response to the temperature of said zone.