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:
Jul. 07, 1992
Filed:
Nov. 05, 1990
Koichi Suda, Aichi, JP;
Aisan Koygo Kabushiki Kaisha, Aichi, JP;
Abstract
The invention is directed to an ignition coil for use in an internal combustion engine. The ignition coil includes a core having at least two parts between which a gap is formed. A primary winding and a secondary winding are mounted on the core in such a manner that the gap of the core is substantially enclosed in the primary winding at least. A permanent magnet, whose cross section is larger in area than the cross section of the core, is disposed in the gap of the core to form a substantially closed magnetic circuit with the core. Preferably, there are disposed a primary bobbin for mounting thereon the primary winding and receiving therein the permanent magnet, and a secondary bobbin for mounting thereon the secondary winding and receiving therein the primary bobbin with the primary winding mounted thereon.