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:
Jun. 16, 2009

Filed:

Sep. 17, 2007
Applicants:

Shuji Hirayama, Saitama, JP;

Masato Takamuro, Saitama, JP;

Yuichiro Morikawa, Saitama, JP;

Masashi Kanezuka, Saitama, JP;

Takehiro Koyasu, Saitama, JP;

Inventors:

Shuji Hirayama, Saitama, JP;

Masato Takamuro, Saitama, JP;

Yuichiro Morikawa, Saitama, JP;

Masashi Kanezuka, Saitama, JP;

Takehiro Koyasu, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01P 9/00 (2006.01); F02B 75/22 (2006.01);
U.S. Cl.
CPC ...
Abstract

To increase the wind volume of the cooling wind flowing through a radiator and to enhance the cooling performance of the radiator by providing a wind exhaust duct using a crankcase of an internal combustion engine. A cooling device of the internal combustion engine includes a radiator arranged lateral to crankcases. A wind exhaust duct exhausts the cooling wind passed through the radiator to the atmosphere. The wind exhaust duct is extends along a rotational axis of the crankshaft at the upper portion of the crankcases and the upper portion of the transmission case.


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