Patent ID: 7152592
Filing Date: 2006-12-26
Classification: H01F

Abstract:
1. An ignition coil that discharges to a spark plug of a combustion engine, comprising: a primary coil body carrying a primary coil; a secondary coil body carrying a secondary coil that is inductively coupled with the primary coil, wherein the secondary coil body and the secondary coil are concentrically enclosed by the primary coil body; an electrically and magnetically conductive shell, whereby the shell encloses the primary and secondary coil bodies and includes a longitudinal slit therethrough; wherein the primary coil includes (2n−1) (n=1, 2, 3, . . . ) layers and a remote extending coil lead of the primary coil is led along the longitudinal slit of the shell, whereby the coil lead runs at least partially within the outer perimeter of the shell.