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:
May. 14, 2013

Filed:

Oct. 18, 2011
Applicants:

Masaki Sugiyama, Numazu, JP;

Tetsuya Hasegawa, Numazu, JP;

Inventors:

Masaki Sugiyama, Numazu, JP;

Tetsuya Hasegawa, Numazu, JP;

Assignee:

Makita Corporation, Anjo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 13/10 (2010.01);
U.S. Cl.
CPC ...
Abstract

An object of the present invention is to provide a muffler mounting structure configured to be able to prevent fastening parts from slackening by reducing the thermal conductivity from an exhaust port to the muffler mounting bosses and an engine including the muffler mounting structure. An engine of the present inventionincludes a cylinder blockor the cylinder headconstitutes a combustion chamberwith a piston, an exhaust port configured to communicate with the combustion chamber, and a muffler mounted to an outlet of the exhaust port, wherein the muffler is mounted with a muffler mounting boss into which a fixing part is fitted, and the muffler mounting boss is connected to a fin formed in the cylinder.


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