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.
Patent No.:
Date of Patent:
Oct. 01, 2013
Filed:
Mar. 08, 2012
Takeo Kato, Wako, JP;
Takeru Abe, Wako, JP;
Tetsuya Takano, Wako, JP;
Kohji Minami, Wako, JP;
Masaya Yazaki, Wako, JP;
Taichi Mori, Wako, JP;
Takeo Kato, Wako, JP;
Takeru Abe, Wako, JP;
Tetsuya Takano, Wako, JP;
Kohji Minami, Wako, JP;
Masaya Yazaki, Wako, JP;
Taichi Mori, Wako, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
An exhaust muffler for improving the timbre of an exhaust sound in a low engine speed region and for increasing an engine output in a high engine speed region. In an exhaust device for an internal combustion engine for discharging an exhaust gas from the internal combustion engine through a multistage expansion type muffler having a plurality of expansion chambers for silencing the sound of the exhaust gas during the passage thereof, the multistage expansion type muffler includes a first tail pipe for communicating between a most downstream one of the expansion chambers and the outside of the muffler and a second tail pipe for communicating between an upstream one of the expansion chambers on the upstream side of the most downstream expansion chamber and the outside of the muffler.