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:
Sep. 14, 2010
Filed:
Apr. 25, 2008
Shuichi Matsubayashi, Tsurugashima, JP;
Ikuo Hirayama, Tsurugashima, JP;
Masami Kojima, Chiryu, JP;
Takashi Tauchi, Nagoya, JP;
Shuichi Matsubayashi, Tsurugashima, JP;
Ikuo Hirayama, Tsurugashima, JP;
Masami Kojima, Chiryu, JP;
Takashi Tauchi, Nagoya, JP;
Toyo Denso Kabushiki Kaisha, Tokyo, JP;
Denso Corporation, Kariya, JP;
Abstract
An ignition coil of a dual ignition type that can prevent outputs from becoming unbalanced due to a difference in floating capacitance on wiring that connects secondary output terminals and ignition plugs together, thus realizing balanced outputs. A coil assembly housed in a housing as a coil case has a primary coil and secondary coils disposed concentrically with the primary coil. The secondary coils are comprised of two coils wound in opposite directions with the center of winding width being a boundary. The center of the winding width of the primary coil is shifted from the center of the winding width of the secondary coils by a predetermined width so as to balance outputs from the two secondary coils. A casting material is filled into a gap between the housing and the coil assembly and gaps which the coil assembly has.