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:
Oct. 26, 2004
Filed:
Jan. 29, 2003
Takashi Nagata, Okazaki, JP;
Kazutoyo Osuka, Gamagori, JP;
Atsuyuki Konishi, Anjo, JP;
Kazuhide Kawai, Kariya, JP;
Junichi Wada, Aichi-pref, JP;
Denso Corporation, Kariya, JP;
Abstract
An ignition coil ( ) having a case ( ), a core ( ) installed in the case, a primary spool ( ) disposed substantially coaxially around an outer circumference of the core within the case, a primary coil ( ) comprising a wire wound around the primary spool, a secondary spool ( ) disposed substantially coaxially around the outer circumference of the core within the case, a secondary coil ( ) comprising a wire wound around the secondary spool and a resin insulating material ( ) filled within the case, the ignition coil being characterized in that the spool of the primary and the secondary spools which is disposed between the secondary coil and the core and/or which is disposed between the secondary coil and the primary coil comprises a base resin having an adhesive strength to the resin insulating material which is less than that provided by polybutylene terephthalate and an insulation breakdown voltage which exceeds that provided by polyphenylene sulfide.