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. 25, 2025
Filed:
Jul. 01, 2022
Applicant:
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Inventors:
Assignee:
YAMAHA HATSUDOKI KABUSHIKI KAISHA, Shizuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/04 (2006.01); B63H 20/24 (2006.01); B63H 20/28 (2006.01);
U.S. Cl.
CPC ...
F01N 3/043 (2013.01); B63H 20/245 (2013.01); B63H 20/285 (2013.01);
Abstract
A marine propulsion device includes an engine, an exhaust pipe to allow exhaust gas of the engine to pass through the exhaust pipe, and a cooling water supply passage to supply cooling water for the engine into the exhaust pipe toward a downstream side in a flow direction of the exhaust gas and cause the cooling water to flow circumferentially along an inner peripheral surface of the exhaust pipe.