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. 28, 2003
Filed:
Oct. 12, 2001
Junichi Shimada, Mito-shi, Ibaraki 311-1134, JP;
Manabu Hashimoto, Hitachinaka-shi, Ibaraki 312-0063, JP;
Katsuhiko Yasu, Hitachinaka-shi, Ibaraki 312-0016, JP;
Hiroyuki Tanaka, Hitachinaka-shi, Ibaraki 312-0061, JP;
Nobuhiko Ishida, Hitachi-shi, Ibaraki 316-0035, JP;
Other;
Abstract
In an individual ignition type ignition coil for use in an internal combustion engine in which a center core a secondary coil wound on a secondary bobbin and a secondary coil wound on a primary bobbin are installed concentrically from an inner side of a coil case in order. Among these interior constituting members, insulation resins and are filled up. Each of the primary bobbin and the secondary bobbin is made of a synthetic resin and at least a skin layer on an inner surface of the primary bobbin and a skin layer on an outer surface of the secondary bobbin are removed, and to the surfaces of the bobbins, the insulation resin is adhered closely. By heightening a close adhesion strength (a bonding strength) of a bobbin and an insulation resin in an individual ignition type ignition coil, an anti-heat shock is improved and an insulation performance of the coil is attained.