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:
Mar. 17, 2015

Filed:

Jan. 08, 2014
Applicant:

Yamaha Hatsudoki Kabushiki Kaisha, Iwata-shi, Shizuoka, JP;

Inventors:

Hiroyuki Fujimoto, Shizuoka, JP;

Kazuhiro Nishihara, Shizuoka, JP;

Keishi Jouzaki, Shizuoka, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 1/08 (2006.01); F01N 3/02 (2006.01); F01N 3/06 (2006.01); F01N 13/08 (2010.01); F01N 3/00 (2006.01); F01N 13/00 (2010.01);
U.S. Cl.
CPC ...
F01N 3/06 (2013.01);
Abstract

A spark arrestor mounted on a muffler connected to an exhaust pipe of an engine includes a cylindrical portion including an opening that extends therethrough from the outside to the inside thereof, two cap members that respectively close first and second ends of the cylindrical portion, a mesh portion that covers the opening, and a tail pipe extending from the inside to the outside of the cylindrical portion through the cap member, wherein the exhaust flows outside the cylindrical portion in a first direction, and a channel where the exhaust flows in a second direction opposite to the first direction is provided inside the cylindrical portion.


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