Ignition coil for internal combustion engine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11404204
APP PUB NO 20210335537A1
SERIAL NO

17241403

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An ignition coil for an internal combustion engine includes a plug boot with a hole having a length extending in an axial direction of the ignition coil. The length of the hole has a portion which includes a plurality of small distance-to-center sections and a plurality of large distance-to-center sections which are arranged alternately in a circumferential direction of the hole. Each of the small distance-to-center sections is located at a first distance away from the center of the hole, while each of the large distance-to-center sections is located at a second distance away from the center of the hole. The second distance is larger than the first distance. The small distance-to-center sections are placed to be contactable with an outer periphery of the coil spring. This structure of the ignition coil has enhanced resistance to mechanical vibration of the coil spring and also has enhanced withstand voltage.

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Patent Owner(s)

Patent OwnerAddress
DENSO CORPORATIONAICHI 448-8661

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kondo, Yuki Kariya, JP 85 516
Torii, Takehiro Kariya, JP 2 2

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