The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 2006
Filed:
Oct. 03, 2002
Shigemi Murata, Tokyo, JP;
Takeshi Shimizu, Tokyo, JP;
Mitsuru Koiwa, Tokyo, JP;
Mitusbishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An ignition apparatus for an internal combustion engine can be reduced in size and cost. A plurality of closed magnetic circuit cores () are built in a casing () and each have an excitation portion () and non-excitation portions (). A plurality of coil parts () each includes a primary coil () and a secondary coil () which are arranged to surround the excitation parts () of a corresponding one of the closed magnetic cores (). The closed magnetic circuit cores () are arranged along an axial direction (A) of the coil parts () such that adjacent ones of the non-excitation portions (), which are those sides of adjacent cores () each of which extends from one end of a corresponding excitation portion (), overlap each other at least partially in the axial direction (A).