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:
Jun. 12, 2007
Filed:
Jun. 07, 2006
Masahiro Iwa, Tokyo, JP;
Nobuyuki Sawazaki, Tokyo, JP;
Masahiro Iwa, Tokyo, JP;
Nobuyuki Sawazaki, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An ignition coil apparatus for an internal combustion engine can improve the ignition performance of the engine in an entire rotation range. The ignition coil apparatus is arranged in a plug hole formed in the engine, and includes a case (), a center core () arranged on a central axis of the case (), and a primary coil () and a secondary coil () both arranged on an outer periphery of the center core (). Magnets () are arranged on the opposite end faces, respectively, of the center core () for applying a magnetic force thereto in a direction opposite to the direction of magnetic flux lines generated when a primary current (i) is supplied to the primary coil (), and the primary coil () has a resistance, an upper limit value of which is 1.2 Ω.