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. 30, 1990
Filed:
Feb. 25, 1986
Tamotsu Suzuki, Hamamatsu, JP;
Toyoshi Suzuki, Hamamatsu, JP;
Takashi Iwashita, Hamamatsu, JP;
Masafumi Sougawa, Hamamatsu, JP;
Sanshin Kogyo Kabushiki Kaisha, Hamamatsu, JP;
Abstract
Embodiments of outboard motors incorporating improved exhaust gas systems for preventing the ingestion of water into the cylinders of an alternate firing multiple chamber internal combustion engine. The exhaust passages are provided with a restricted communication with each other at a point that is above the water under all running conditions so as to prevent water ingestion. In one embodiment, the exhaust passages communicate with an above the water exhaust gas discharge independently of each other and the restricted communication is provided between the passages by a restricted opening in an exhaust pipe. In another embodiment, the exhaust pipe forms an expansion chamber and the individual exhaust passages communicate with this expansion chamber at points close to each other through restricted openings for providing the communication.