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:
Aug. 27, 1996
Filed:
Jul. 18, 1994
Shingo Morita, Himeji, JP;
Yutaka Ohashi, Himeji, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An ignition coil has an inorganic insulator material featuring a larger conductivity in the direction along the surface of the material than in the direction perpendicular to the surface of the material, between high-tension voltage components internal to a casing and conducting components internal and external to the casing. Localized discharge deterioration advancing from the high-tension components toward the conducting components is changed in its direction of advance to the direction along the surface of the inorganic insulator material, and is diffused accordingly. The resistance of the ignition coil against localized discharge deterioration is increased, and improved reliability in breakdown performance is resulted. This leads to a compact design. The casing and bobbins are constructed of mica sheet as inorganic insulator material using insert molding technique, and productivity of the ignition coil is improved.