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:
Jan. 08, 2002
Filed:
Dec. 23, 1999
Applicant:
Inventors:
Takanori Sato, Hitachi, JP;
Ryozo Takeuchi, Hitachi, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 2/702 ;
U.S. Cl.
CPC ...
H01F 2/702 ;
Abstract
An ignition coil for an internal-combustion engine has satisfactory electrical insulation capacity and is excellent in reliability and durability. The ignition coil for an internal-combustion engine comprises a primary bobbin on which a primary coil is wound, a secondary bobbin on which a secondary coil is wound, and a center core. The area of a cross section of the center core perpendicular to an axis of the coils at a position on the inner side of the opposite ends of the center core is a maximum.