Marine propulsion – Screw propeller – Propulsion unit casing
Reexamination Certificate
2009-10-28
2011-12-27
Avila, Stephen (Department: 3617)
Marine propulsion
Screw propeller
Propulsion unit casing
Reexamination Certificate
active
08083558
ABSTRACT:
An outboard motor has a top cover extending over an engine cover covering an engine, and an upstream intake silencer spaced upward apart from the top wall of the engine cover. The upstream intake silencer has an entrance duct spaced apart from the top wall and forming an inlet air passage through which air for combustion flows from an air-intake space into the upstream intake silencer. The upstream end of the inlet air passage is on the rear side of the downstream end of an outlet air passage and at a level above that of an air-intake opening. The entrance duct does not extend downward from a bottom wall forming the upstream expansion chamber and protrudes upward from the bottom wall in the upstream expansion chamber.
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Japanese Office Action dated May 24, 2011, issued in corresponding Japanese Patent Application 2008-316033.
Avila Stephen
Honda Motor Co. Ltd.
Westerman Hattori Daniels & Adrian LLP
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