US Patent 7789078 Ignition coil device for internal combustion engine
Patent 7789078 was granted and assigned to Hitachi on September, 2010 by the United States Patent and Trademark Office.
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Patent abstract
An internal combustion engine ignition coil device has an annular seal rubber at its lower side coil. An annular projection is provided on a part of the seal rubber and is pressed against the inner diameter surface of a plug hole. An air path is formed in part of a coil case by mounting the seal rubber into a groove, enabling inside and outside portions of the plug hole to communicate. A gas-permeable thin film resin member is bonded to an inlet of the air path.
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Patent Inventor Names
Makio Takahashi0
Takanobu Kobayashi0
Yoichi Anzo0
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US Patent 07789078 Ignition coil device for internal combustion engine US Patent 7789078 Ignition coil device for internal combustion engine
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Patent Number
077890780
Patent Number
77890780
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Official Website
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Infobox
Is a
Current Assignee
Patent Jurisdiction
Patent Number
077890780
Date of Patent
September 7, 2010
0Patent Application Number
115974260
Date Filed
July 28, 2005
0Official Website
Patent Primary Examiner
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US Patent 07789078 Ignition coil device for internal combustion engine
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07789078
Date of patent
September 7, 2010
Patent application number
11597426
Date Filed
July 28, 2005
Patent primary examiner
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