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US 12,172,742 B2Granted
Outboard motor
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorsShuhei Okamoto, Naoki Sugita
Life of this patent
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Abstract
An outboard motor that significantly reduces or prevents discoloration around an exhaust hole includes an engine, a drive shaft, a propeller shaft, a housing, a discharge passage, and non-metal covers. The housing includes a discharge outlet to discharge an exhaust gas of the engine and the cooling water of the engine. The discharge passage guides the exhaust gas and the cooling water from the engine toward the discharge outlet. The covers are detachably attached to the housing so as to cover the discharge outlet and include at least one exhaust opening.
Claims10
An outboard motor comprising:
- an engine;
- a drive shaft extending downward from the engine;
- a propeller shaft extending in a direction intersecting with the drive shaft;
- a housing to accommodate the engine, the drive shaft, and the propeller shaft and that includes a discharge outlet to discharge exhaust gas and cooling water of the engine;
- a discharge passage inside the housing to guide the exhaust gas and the cooling water from the engine to the discharge outlet;
- and
- a non-metal cover detachably attached to the housing to cover the discharge outlet and including at least one exhaust opening;
- wherein
- the discharge outlet includes a pair of discharge outlets;
- the cover includes a pair of covers;
- and
- the pair of covers cover the pair of discharge outlets respectively and are connected to each other by a connector.
9 more elements
Dependencies are inferred from the claim text.