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.
Patent No.:
Date of Patent:
Nov. 22, 2011
Filed:
Jan. 15, 2010
Toshio Maekawa, Tokyo, JP;
Toshio Maekawa, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An ignition coil device mounted on the cylinder head of an internal combustion engine. The ignition coil includes: a cylindrical pipe inserted into a plug hole while a first clearance is formed between the cylindrical pipe and the plug hole; a coil tower arranged over the cylindrical pipe; a seal member arranged below the coil tower for sealing the plug hole; and a cover arranged between the seal member and the coil tower. The seal member is formed with an air bleeding hole extending from the first clearance to a side of the coil tower. The air bleeding hole includes a protruding opening. A circumferential wall portion is positioned on the outer circumference side of the protruding opening while a second clearance is formed between the cover and a periphery of the protruding opening.