Ignition coil
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United States of America Patent
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Oct 25, 2022
Grant Date -
Jul 11, 2019
app pub date -
Sep 28, 2016
filing date -
Sep 28, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
An ignition coil, including: a center core; a primary coil wound around the center core; a secondary coil wound around the primary coil; a side core, which is arranged around the secondary coil, and is coupled to the center core to from a closed magnetic path; a case configured to accommodate the center core, the primary coil, the secondary coil, and the side core; and an insulating resin filled in the case, wherein the side core includes a wide portion having a larger width in a direction from the center core to the side core, and a narrow portion having a smaller width than the wide portion, and wherein the narrow portion is formed on a high-voltage side of the side core.
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