Outboard motor
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorYoshihiko OKABE
Life of this patent
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Abstract
An outboard motor includes an electric motor, a drive shaft to be rotationally driven by the electric motor, a propeller, a propeller shaft to rotate together with the propeller, a gear mechanism to transmit rotation of the drive shaft to the propeller shaft, a cooling water flow path through which cooling water flows, and a water pump to pump the cooling water into the cooling water flow path. The water pump includes an impeller and a pump shaft to rotate together with the impeller, and the pump shaft is coaxial with the propeller shaft and rotatable together with the propeller shaft.
Claims16
An outboard motor to be mounted on a hull, the outboard motor comprising:
- a drive unit;
- a drive shaft to be rotationally driven by the drive unit;
- a propeller;
- a propeller shaft to rotate together with the propeller;
- a transmission mechanism to transmit rotation of the drive shaft to the propeller shaft;
- a cooling water flow path through which cooling water flows;
- and
- a water pump to pump the cooling water into the cooling water flow path;
- wherein
- the water pump includes:
- an impeller;
- and
- a pump shaft to rotate together with the impeller;
- and
- the pump shaft is coaxial with the propeller shaft and rotatable together with the propeller shaft.
An outboard motor to be mounted on a hull, the outboard motor comprising:
- a drive unit;
- a drive shaft to be rotationally driven by the drive unit;
- a propeller;
- a propeller shaft to rotate together with the propeller;
- a transmission to transmit rotation of the drive shaft to the propeller shaft;
- a cooling water flow path through which cooling water flows;
- and
- a water pump to pump the cooling water into the cooling water flow path;
- wherein
- the water pump includes:
- an impeller;
- and
- a pump shaft to rotate together with the impeller;
- and
- the pump shaft is rotatable by transmitting a rotation of the propeller shaft.
Dependencies are inferred from the claim text.