IGNITION COIL
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United States of America Patent
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Issued Date -
Dec 21, 2023
app pub date -
May 18, 2023
filing date -
Jun 17, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
A boot of an ignition coil 2 includes: a main portion 18; a distal end portion 22; a seal portion 24 located between the main portion 18 and the distal end portion 22 and having a larger outer diameter than the main portion 18; and an air passage 28. When the ignition coil 2 is mounted on an internal combustion engine 20, the main portion 18 is exposed to an external environment, the distal end portion 22 is inserted in a plug hole 34 of the internal combustion engine 20, the seal portion 24 separates the external environment and the plug hole 34 from each other, and the air passage 28 connects the external environment and the plug hole 34 to each other. A first opening 44 of the air passage 28 is located in an outer circumferential surface of the main portion 18.
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