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:
Aug. 26, 2014
Filed:
Nov. 07, 2012
Applicant:
Yamaha Hatsudoki Kabushiki Kaisha, Iwata, JP;
Inventors:
Takayoshi Suzuki, Shizuoka, JP;
Noriyoshi Hiraoka, Shizuoka, JP;
Assignee:
Yamaha Hatsudoki Kabushiki Kaisha, Shizuoka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B63H 21/22 (2006.01); B63H 21/17 (2006.01); B63H 21/14 (2006.01); B63H 21/20 (2006.01);
U.S. Cl.
CPC ...
B63H 21/14 (2013.01); Y02Y 70/5236 (2013.01); B63H 2021/205 (2013.01); B63H 21/17 (2013.01); B63H 21/20 (2013.01);
Abstract
A marine vessel propulsion device includes a propeller rotatable around a propeller axis, a duct that surrounds the propeller around the propeller axis, an internal combustion engine that rotates the propeller relative the duct, and an electric motor that rotates the propeller relative to the duct. The propeller includes a plurality of blades, and a cylindrical rim that surrounds the plurality of blades around the propeller axis. The electric motor rotates the propeller by rotating the rim.