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.

Date of Patent:
Mar. 11, 2025

Filed:

Feb. 14, 2022
Applicant:

Diamond & Zebra Electric Mfg.co., Ltd., Osaka, JP;

Inventors:

Kohei Adachi, Osaka, JP;

Shintaro Yamamura, Osaka, JP;

Eiji Kawaguchi, Osaka, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 38/12 (2006.01); F02P 3/04 (2006.01); H01F 27/02 (2006.01); H01F 27/29 (2006.01); H01F 27/34 (2006.01);
U.S. Cl.
CPC ...
H01F 27/29 (2013.01); F02P 3/04 (2013.01); H01F 27/02 (2013.01); H01F 27/34 (2013.01); H01F 38/12 (2013.01);
Abstract

An ignition coil for use in an internal combustion engine includes a coil assembly including a primary coil and a secondary coil, a lead terminal electrically connected to the secondary coil, a noise prevention resistor connected to a spark plug, and a case. An internal space of the case includes a first space holding the coil assembly and the lead terminal and a second space including the noise prevention resistor. The case includes a pair of guides protruding toward the first space. The lead terminal passes through a gap between the pair of guides and is in contact with an exposed surface of the noise prevention resistor. This can reduce deviation of the lead terminal. As a result, the secondary coil and the noise prevention resistor can be electrically connected to each other without intervention of a high-voltage terminal therebetween.


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