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. 30, 2014

Filed:

Sep. 14, 2009
Applicants:

Shoji Kawase, Wako, JP;

Atsushi Maruyama, Wako, JP;

Toru Kawai, Wako, JP;

Inventors:

Shoji Kawase, Wako, JP;

Atsushi Maruyama, Wako, JP;

Toru Kawai, Wako, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/02 (2006.01); F01N 5/02 (2006.01); F01N 13/08 (2010.01); F01N 1/08 (2006.01); F01N 3/05 (2006.01); F01N 13/18 (2010.01); F01N 1/00 (2006.01); F01N 13/00 (2010.01);
U.S. Cl.
CPC ...
F01N 3/055 (2013.01); F01N 13/1855 (2013.01); F01N 2490/02 (2013.01); F01N 1/003 (2013.01); F01N 13/1805 (2013.01); F01N 1/089 (2013.01); F01N 13/002 (2013.01); F01P 2060/16 (2013.01); Y02T 10/20 (2013.01); F01N 2230/00 (2013.01); F01N 2240/02 (2013.01); F01N 2590/06 (2013.01);
Abstract

An exhaust muffler disposed in proximity to a cylinder of a general-purpose engine is provided, in which an exhaust muffler for a general-purpose engine is formed from a muffler main body connected to a cylinder of a general-purpose engine via an exhaust pipe and disposed adjacent to the cylinder, a partition member that divides the interior of the muffler main body into a first muffler chamber communicating with the exhaust pipe and a second muffler chamber communicating with an exhaust outlet of the muffler main body, and an exhaust cooling pipe exposed outside the muffler main body while providing communication between the first muffler chamber and the second muffler chamber. This enables exhaust gas to be cooled effectively by passing though the exhaust cooling pipe when moving from the first muffler chamber to the second muffler chamber, thus enhancing muffling by reducing the pressure of the exhaust gas.


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