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:
Sep. 23, 2003
Filed:
Feb. 09, 2001
Takashi Komatsuda, Saitama, JP;
Kaoru Aoki, Saitama, JP;
Shinichi Takahashi, Saitama, JP;
Takuya Takagi, Saitama, JP;
Hiromu Nakamura, Saitama, JP;
Tsutomu Yamasaki, Saitama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
In a cylinder head of an internal combustion engine, communicating passageways ′ for coolant are provided between combustion chambers and pass-through holes to at positions which overlap straight lines L L connecting centers C C of the exhaust port openings with centers C to C of the pass-through holes to and straight lines L L connecting centers C C of the intake port openings with centers C to c of the pass-through holes to when a mating surface of the cylinder head with the cylinder block is viewed from the bottom. When peripheries of the exhaust port openings and intake port openings thermally expand, the suppression of thermal expansion by the bolts at fastening portions is alleviated by the communicating passageways