Patents by Inventor Sukehiro Yamaguchi

Sukehiro Yamaguchi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Outboard engine construction adapted for use with deep draft and shallow draft vessels
    Patent number: 4747795
    Abstract: An outboard engine construction in which an engine is mounted at the upper end of an extension case provided with a stern bracket adapted to be clamped to a stern plate of a vessel and a gear case having a rotatable propeller is connected to the lower end of the extension case. A drive shaft connected to a crank shaft of the engine is housed within the extension case and a drives a gear assembly connected to the propeller. The extension case is constituted by a primary upper case portion and a selectively removable auxiliary lower case portion. A transmission is contained in the auxiliary case portion and is detachably interposed therewith between the drive shaft and the gear assembly.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: May 31, 1988
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hiroshi Kawamura, Nobuo Haga, Sukehiro Yamaguchi