Personal watercraft
AssigneeKawasaki Motors, Ltd.
InventorToshio ARAKI
Life of this patent
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Abstract
A personal watercraft propelled by a jet stream includes a boat body, a jet pump, a tunnel, a tunnel opening and a thrust propulsion device. The jet pump includes an impeller disposed at a rear portion of the boat body and generates a propulsive force, and an impeller shaft that rotates the impeller. The tunnel extends in the boat body. The tunnel opening is located at one end of the tunnel, disposed in front of the jet pump, directed in a thrust direction, and opened in the boat body at a position equal to or lower than a virtual plane extending in a horizontal direction along a rotation axis of the impeller. The thrust propulsion device generates a propulsive force in the thrust direction by causing a fluid to flow from an inside of the tunnel to an outside of the boat body through the tunnel opening.
Claims16
A personal watercraft propelled by a jet stream, the personal watercraft comprising:
- a boat body;
- a jet pump including an impeller that is disposed at a rear portion of the boat body and generates a propulsive force, and an impeller shaft that rotates the impeller;
- a tunnel extending in the boat body;
- a tunnel opening located at one end of the tunnel, disposed in front of the jet pump, directed in a thrust direction intersecting a front-rear direction of the boat body, and opened in the boat body at a position equal to or lower than a virtual plane extending in a horizontal direction along a rotation axis of the impeller;
- and
- a thrust propulsion device that generates a propulsive force in the thrust direction by causing a fluid to flow from an inside of the tunnel to an outside of the boat body through the tunnel opening.
A personal watercraft propelled by a jet stream, the personal watercraft comprising:
- a boat body;
- a jet pump including an impeller that is disposed at a rear portion of the boat body and generates a propulsive force, and an impeller shaft that rotates the impeller;
- and
- a side thruster that generates a water flow in a thrust direction intersecting a front-rear direction of the boat body relative to the boat body, and has a water flow generation position set at a height position equal to or lower than a virtual line extending in an extending direction of the impeller shaft in front of the impeller.
A personal watercraft propelled by a jet stream, the personal watercraft comprising:
- a boat body;
- a jet pump including an impeller that is disposed at a rear portion of the boat body and generates a propulsive force, and an impeller shaft that rotates the impeller;
- a stabilizer disposed at a rear portion and on a side portion of the boat body;
- and
- a side thruster that generates a water flow in a thrust direction intersecting a front-rear direction of the boat body relative to the boat body, and has a water flow generation position located in front of the impeller and below the stabilizer.
Dependencies are inferred from the claim text.