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.

Date of Patent:
Sep. 18, 2007

Filed:

Oct. 11, 2005
Applicants:

Satoshi Matsui, Okazaki, JP;

Toshihiko Oka, Anjyo, JP;

Koichi Yoshimoto, Moriguchi, JP;

Yoshinori Sakurai, Okazaki, JP;

Akimasa Yamamoto, Okazaki, JP;

Inventors:

Satoshi Matsui, Okazaki, JP;

Toshihiko Oka, Anjyo, JP;

Koichi Yoshimoto, Moriguchi, JP;

Yoshinori Sakurai, Okazaki, JP;

Akimasa Yamamoto, Okazaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02F 1/36 (2006.01);
U.S. Cl.
CPC ...
Abstract

A pair of exhaust ports () have flat portions () formed on respective inner peripheral surfaces thereof and facing in directions opposite to each other. An intervening cooling water passage () is formed between the flat portions () when a cylinder head () is cast.


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