Patent ID: 6636137
Filing Date: 2003-10-21
Classification: B21D,H02K,Y10T

Abstract:
An ignition coil assembly for an internal combustion engine which comprises:an inner core element formed from a plurality of laminae plates that are stacked and interlocked together, each of said plurality of laminae plates having a substantially common length and a substantially uniform width along the length thereof, the length of each laminae plate being greater than a width thereof, each of said laminae plates in said stack being interlocked to an adjacent laminae plate by tabs which are interference-fitted into slots, said tabs and slots provided in said adjacent ones of said stacked laminae plates and wherein said plurality of laminae plates form an interlocked stack of laminae plates having a plurality of widths and defining a substantially circular cross section, said interlocked stack of laminae plates having a substantially planar end surface that is provided with a guide element that is aligned substantially perpendicular to the widths of said plurality of laminae plates; a primary coil and a secondary coil surrounding said inner core element; an outer core surrounding the primary and secondary coils; terminal leads coupled to the primary and secondary coils; and a high-voltage terminal for receiving a high voltage induced in the secondary coil.