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US 8,911,271 B2Granted
Marine vessel and marine vessel propulsion unit
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorSusumu Shibayama
Life of this patent
Estimating the term…
Abstract
A marine vessel includes a hull, a jet pump disposed outside the hull, and an electric motor arranged to drive the jet pump. The jet pump includes a water inlet, a jet nozzle disposed posterior to the water inlet, and a flow path connecting the water inlet and the jet nozzle, and is arranged to jet water, taken in through the water inlet, through the jet nozzle. The electric motor is disposed between the hull and the jet pump.
Claims25
A marine vessel comprising:
- a hull;
- a jet pump disposed outside the hull and including a water inlet, a jet nozzle disposed rearward of the water inlet, and a flow path connecting the water inlet and the jet nozzle, the jet pump being arranged to jet water, taken in through the water inlet, through the jet nozzle;
- and
- an electric motor disposed outside of the flow path, outside of the hull, and between the hull and the jet pump and arranged to drive the jet pump.
1 more element
A marine vessel propulsion unit comprising:
- a jet pump including a water inlet, a jet nozzle disposed rearward of the water inlet, and a flow path connecting the water inlet and the jet nozzle and including an impeller disposed in the flow path, the jet pump being arranged to jet water, taken in through the water inlet, through the jet nozzle;
- an electric motor disposed outside the flow path and attached to the jet pump, the electric motor being arranged to rotationally drive the impeller;
- and
- a drive shaft that transmits a rotation of the electric motor to the impeller, the drive shaft including a front end portion arranged to rotate together with an output shaft of the electric motor, and a rear end portion arranged to rotate together with the impeller.
1 more element
Dependencies are inferred from the claim text.