Patent ID: 6677561
Filing Date: 2004-01-13
Classification: C21D,H05B,Y02P

Abstract:
An induction heating coil for transverse flux induction heating of an object in the form of an elongate metal workpiece, the workpiece having a longitudinal axis, the coil comprising:at least two separate shaped conductors, first and second conductors each having segments substantially perpendicular to and segments substantially parallel to the longitudinal axis of the workpiece, the perpendicular and parallel segments of each conductor forming U-shaped segments along the longitudinal axis of the workpiece, respective perpendicular segments of the first and second conductors substantially overlapping one another, each U-shaped segment having an open end, the at least two separate conductors being capable of heating the workpiece when respective U-shaped segments from the at least two separate conductors are arranged to form a substantially closed loop, any one conductor being incapable of independently heating the workpiece.