Patents Represented by Law Firm Evenson, McKeown, Edwards & Lenahan, P.C.
  • Ignition apparatus for an internal combustion engine
    Patent number: 5632259
    Abstract: A cylindrical type ignition apparatus housed in a spark plug hole of a cylinder of an internal combustion engine is disclosed. A center core, a primary coil, a secondary core and a side core are provided, and a closed magnetic path is formed by connecting magnetically the center core and the side core by a core on a high voltage side and a core on a low voltage side, or a semi-closed magnetic path is formed by connecting magnetically the center core and the side core by a core on a low voltage side.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: May 27, 1997
    Assignees: Hitachi, Ltd., Hitachi Car Engineering Co., Ltd.
    Inventors: Eiichiro Konda, Noboru Sugiura, Kazutoshi Kobayashi, Kenichi Katagishi, Yoichi Anzo, Hidetoshi Oichi, Hiroshi Watanabe