Patent ID: 6474322
Filing Date: 2002-11-05
Classification: F02P

Abstract:
An ignition device of a cylindrical shape for an internal combustion engine comprising:a center core, a secondary coil wound around a secondary bobbin and a primary coil wound around a primary bobbin, all of which are concentrically located in this order from the inside thereof within a coil portion case previously made of a thermoplastic synthetic resin; a flexible epoxy resin made to fill between said center core and the secondary bobbin; a thermosetting synthetic resin made to fill in a periphery of each of said constituting elements located within the case; a side core located at an outer side of the coil portion case; a circuit case with a connector for receiving a drive circuit which circuit case is provided at a head portion of said coil portion case; said cylindrical ignition device being adapted to be directly connected to an ignition plug and to be received within a plug hole, wherein said side core has a spirally wound, cylindrical shape and is made of a silicon steel strip having a thickness not more than 0.2 mm.