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:
Mar. 14, 2000
Filed:
Feb. 04, 1998
Takuya Sato, Hamamatsu, JP;
Yoshiaki Yuda, Shizuoka-Ken, JP;
Suzuki Kabushiki Kaisha, Hamamatsu, JP;
Abstract
An outboard motor generally comprises an engine holder to be mounted to a hull, an engine disposed in an upper portion of the engine holder in a mounted state thereof, an oil pan disposed in a lower portion of the engine holder, and a drive-shaft housing disposed below the oil pan and adapted to house a drive shaft of the engine, in which an exhaust gas from the engine is guided to the drive-shaft housing through an exhaust gas passage and the exhaust gas in the drive-shaft housing is discharged outward through an exhaust release passage connected to the drive-shaft housing at a time of low-speed revolution of the engine such as idling operation. There is further provided a partition wall integrally with an inside portion of the drive-shaft housing so as to divide the inside thereof into an expansion chamber communicated with the exhaust gas passage and a release chamber communicated with the exhaust release passage, and the partition wall has a cutout portion at an upper end portion thereof, through which the expansion chamber and the release chamber are communicated with each other.