Patent ID: 6271507
Filing Date: 2001-08-07
Classification: B23K,H01R,H05K

Abstract:
An apparatus for conductively bonding the conductors of a pair of flat circuits in which the conductors are generally parallel and at different densities laterally of the circuits, comprising:a platen defining a work station;locating means on the platen at the work station and above which opposing ends of the pair of flat circuits can be overlapped with the conductors of the overlapped circuits juxtaposed, the locating means being elongated transversely of the parallel conductors;an inductive coil above the locating means and including an armature and a winding for generating a magnetic field when electrical current is run therethrough;a plurality of magnetic concentrators disposed in an elongated array on said locating means transversely of the parallel conductors for concentrating the magnetic field on the conductors, the concentrators being independent of the inductive coil and the conductors, and the plurality of concentrators having different masses corresponding to the different densities of the conductors laterally of the circuits; andan applicator for applying pressure to the juxtaposed conductors,whereby the concentrators concentrate the magnetic field generated by the inductive coil on the conductors at different concentrations laterally of the circuits corresponding to the different densities of the conductors thereby heating the conductors under pressure and electrically bonding the conductors together.