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:
Apr. 07, 2009
Filed:
Dec. 28, 2006
Kentaro Kameoka, Shizuoka-ken, JP;
Masanori Takahashi, Shizuoka-ken, JP;
Kimitaka Saruwatari, Shizuoka-ken, JP;
Kentaro Kameoka, Shizuoka-ken, JP;
Masanori Takahashi, Shizuoka-ken, JP;
Kimitaka Saruwatari, Shizuoka-ken, JP;
Yamaha Hatsudoki Kabushiki Kaisha, Shizuoka, JP;
Abstract
An outboard motor can include a case that extends longitudinally and can be supported on a hull of a boat. An engine can be supported on the upper surface side of the case and a cowling can be supported on the upper end portion of the case for covering the engine from the outside. An idle exhaust passage can be formed to discharge exhaust produced during idling of the engine to the atmosphere from the inside of the case. An expansion chamber can be formed at a midway portion of the idle exhaust passage. The downstream end of the idle exhaust passage can serve as an idle exhaust port that is open to the atmosphere. A plurality of such idle exhaust ports can be formed.