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:
Jan. 02, 2007
Filed:
Mar. 02, 2004
Noboru Yokoya, Saitama, JP;
Takeshi Kimishima, Saitama, JP;
Yasunori Okazaki, Saitama, JP;
Takeshi Koyabu, Saitama, JP;
Masatsugu Matsumoto, Saitama, JP;
Yoshiaki Noda, Saitama, JP;
Noboru Yokoya, Saitama, JP;
Takeshi Kimishima, Saitama, JP;
Yasunori Okazaki, Saitama, JP;
Takeshi Koyabu, Saitama, JP;
Masatsugu Matsumoto, Saitama, JP;
Yoshiaki Noda, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
An exhaust system for a small-sized boat which can efficiently reduce exhaust noises in a low frequency band includes a water muffler provided at one location along exhaust pipes extending from an engine disposed in a boat body. The inside of the water muffler is divided into a single expansion chamber and a resonator chamber, and a front exhaust pipe coupled to the engine and a rear exhaust pipe opened to the outside of the boat are connected to the expansion chamber. Between the front exhaust pipe opened to the inside of the expansion chamber and the rear exhaust pipe, a water-controlling plate is provided in an upper side of the expansion chamber.