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7614355 |
Personal flying water jet apparatus
A personal flying water jet apparatus consisting of two towing connected units: one is a floating platform, mainly an inflatable Ski Tube ( 12 A) (and so on), equipped with water jet nozzles ( 18 )...
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7604520 |
Electrical linear motor for marine propulsion
An electrical linear motor for propelling a marine vessel comprises a thruster assembly disposed within a guide tube. Permanent magnets are attached to the thruster assembly and placed in close...
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7601040 |
Method and apparatus for controlling a marine vessel
One embodiment of the invention comprises a method for controlling a marine vessel having a first steerable propulsor, a corresponding first reversing device, a second steerable propulsor and a...
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7597600 |
Engine for driving a watercraft propelled by a water jet
A system for driving a water induction and discharge system of a watercraft propelled by a water jet includes a water impeller, an engine including a driven shaft and a first chamber for containing...
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7575489 |
Small watercraft capable of suppressing vibration and noise of the vessel body
To provide a small watercraft capable of suppressing vibration and noise of a vessel body, a jet pump is mounted to a hull via a thrust plate. A dynamic damper is disposed as an adjunct at a plate...
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7566251 |
Jet pumping device
A propulsion or pumping device which includes two counter-rotating shafts ( 3, 4 ) each carrying at least one impeller ( 7, 8 ), wherein each impeller ( 7, 8 ) can deflect by a predetermined amount...
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7507128 |
Power system for watercraft
Personal watercraft systems and watercraft power systems are described. The personal watercraft power systems include a housing for supporting a water jet pump and engine system. The housing is...
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7481687 |
Jet propulsion outboard and inboard motor
The present invention relates to a novel and non-obvious propulsion system for watercraft, especially, but not limited to, watercraft less than about 50 feet in length. Propulsion system of the...
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7476134 |
Jet powered steering system for small boat outboard motors
A directional nozzle for the jet output that is attached to a control cable system. This cable turns the directional nozzle, which causes the trust of the jet output to turn the boat. Thus, the...
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7470161 |
Lifting body water jet propulsion inlet inductor
A foil shaped lifting body is attached by means of a strut to the underwater body of a vessel in such a manner as to cause a standing wave to be developed when the vessel is in operation in order...
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7448926 |
Impeller drive for a water jet propulsion unit
A water propulsion unit having an intake housing, a pump housing and an outlet with two spaced apart counter rotating impellers being located in the pump housing. The impeller blades on one...
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7445531 |
System and related methods for marine transportation
A system and related methods for manned and/or unmanned marine transportation involving equipping a vessel capable with a linear pump for propelling the vessel through or substantially over a body...
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7422498 |
Ship with wave engulfing enhanced propulsors
Presented is a way to reduce the wave drag of high speed ships by ingesting wave energy into water propulsors disposed at the bow and/or on the sides of the main hull of the ship. A forward...
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7377826 |
Fouling removal system for jet drive water intake
A fouling removal system for use in a water-jet drive system is described. The fouling removal system includes a cutter arm assembly and an optional cutter stud. The cutter arm assembly includes a...
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7364481 |
Jet-propelled watercraft
A jet-propelled watercraft capable of maintaining a propulsion force required for a turn made at the same time as closing of a throttle valve. The jet-propelled watercraft has an auxiliary intake...
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7361068 |
Seal pressure vent system for a waterjet apparatus
A seal pressure vent system for a waterjet propulsion apparatus including a water intake section and a pumping unit. The pumping unit is designed such that in operation the seal pressure vent...
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7357685 |
Jet pump tail cone insert
The present disclosure relates to a jet pump tail cone insert for a jet pump. The jet pump tail cone insert comprises a cap, a body and an end member. The end member has a plurality of projections...
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7353764 |
Corvette ship-type equipment system
A corvette ship-type equipment system includes standard-equipment segments, such as an energy generator, an energy distributor, a drive and an automation segment, and a hull which is adapted to the...
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7354322 |
Watercraft and waterjet propulsion system
The present invention relates to a watercraft with an improved waterjet propulsion system. The present invention further relates to a waterjet propulsion system with an improved steering nozzle...
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7341496 |
Fast sea-going ship with a double bottom and a waterjet drive
The invention relates to a high-speed, sea-going ship comprising a double hull and a water-jet drive, the latter consisting of at least one pump assembly for generating the water-jet and at least...
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7329160 |
Motorized watercraft
A motorized watercraft with a hull of the craft on which a user lies prone, at least partially, or stands up, with a flow channel extending in the hull of the craft with an electric motor-driven...
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7318759 |
Preload system for bearings in a waterjet propulsion apparatus
A preload system for bearings in a waterjet propulsion apparatus, the apparatus including a water intake section and a pumping unit including a bearing cartridge. The bearing cartridge is designed...
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7311574 |
Integrated marine motor support and transmission apparatus
An integrated motor support and transmission apparatus for a marine propulsion system having a motor and marine drive with a drive shaft, comprising: an output shaft; a support housing attached to...
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7270583 |
High efficiency watercraft propulsion system
A propulsion system for a watercraft includes a concavity formed in a hull of the watercraft. The concavity has a minimum depth at its leading end and a maximum depth at its trailing end. An...
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7267594 |
Jet pump mounting structure of small-sized boat
Jet pump mounting structure of a small-sized boat including a front face of a thrust plate attached to a rear face of a front wall of a pump case, and a jet pump attached to a rear face of the...
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7264519 |
Safe efficient outboard motor assembly
An outboard motor assembly for use as external propulsion for a watercraft includes a drive assembly, a shaft assembly, and a impeller-jet assembly coupled to the shaft assembly. The impeller-jet...
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7258301 |
Personal propulsion device
The present invention provides a personal propulsion device including a body unit having a center of gravity, where the body unit includes a thrust assembly providing a main conduit in fluid...
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7252566 |
Mounting portion of water jet pump of personal watercraft, and personal watercraft
A mounting portion of a water jet pump of a personal watercraft is disclosed. The mounting portion typically includes a tubular pump casing configured to accommodate the impeller, and a pump...
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7252567 |
Method for forming/installing intake duct in waterjet-propelled marine vessel
A waterjet-propelled marine vessel having a hull with a transom and a bottom, a jet pump, and an intake duct, the improvement comprising: (1) the transom and bottom having a common opening for...
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7247068 |
Boat propulsion unit
A propulsion unit for a boat has a cooling water intake structure through which entry of cooling water is obstructed when the boat is towed while the impeller is not turned, and through which...
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7241193 |
Variable marine jet propulsion
A variable marine jet propulsion system incorporates a motor, a variable-pitch propeller pump in a spherical housing, a variable housing and a variable inlet duct, and a microcontroller. The pump,...
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7238067 |
Variable area pump discharge system
A highly efficient watercraft propulsion system that operates continually submerged and relies on a non-circular variable area pump discharge opening which is configured, positioned and oriented so...
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7238066 |
Pod propulsion system with rim-mounted bearings
A pod propulsion system comprises a housing defining a fluid duct and an annular drum rotatably mounted to the housing within the fluid duct. The annular drum has a drum interior and a cylindrical...
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7229029 |
Propulsion system
A propulsion system for a jet- or rocket-propelled vehicle in which the resulting jet exhaust nozzle profile is a 3D spiral. The propulsion system can be applied to any jet- or rocket-propelled...
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7226324 |
Waterjet with internal drive motor
A marine waterjet propulsion system having an impeller with an impeller hub, a diffusor with a diffusor hub, and a motor driving the impeller, the motor being placed inside at least one of said...
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7223138 |
Water jet propeller
A water jet propeller for preventing an impeller from being exposed when the water jet propeller is disassembled. The water jet propeller includes a stator disposed at a rear-end portion of an...
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7220154 |
Outboard jet drive marine propulsion system
An outboard jet drive marine system for a boat includes a housing, the housing has front and rear sides, and a top and bottom. The housing is adapted to be affixed behind a hull of a boat. An...
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7220155 |
Integrated engine-jet pump drive unit for marine application
A watercraft includes a shell, a ride plate, an internal combustion engine, and a jet pump. The shell defines a tunnel that extends forwardly from the transom and is defined laterally by the shell....
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7179142 |
Mounting structure for jet propulsion pump in personal watercraft
A mounting structure for mounting a jet propulsion pump in a body of a personal watercraft includes, a front mounting portion of the pump being mounted to a rear portion, in a planing direction of...
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7174842 |
Boat propulsion system
A boat propulsion system includes a plurality of positive displacement pumps which having high discharge head and having inlets and outlets therein and a controlling panel having circuits, wherein...
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7143707 |
Water jet drive for marine vehicles
A compact operational retro-fit drive plant, for installation in the base of the bow or stern of various types of marine vehicle, in particular of displacement types, which serves for maneuvering...
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7128624 |
Rechargeable open cycle underwater propulsion system
In an underwater vehicle, hydrogen and oxygen are fed into a combustion chamber of a combustor of the underwater vehicle to initiate a combustion reaction, which generates high-pressure steam. The...
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7121904 |
Water jet propulsion watercraft
A water jet propulsion watercraft that allows accurate speed detection of a speed detection unit to be achieved. A water jet propulsion watercraft includes a hull bottom plate with left and right...
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7108569 |
Axial flow pump or marine propulsion device
A multistage axial-flow pumping or marine propulsion device having fixed or variable pitch stators between rotors. Stator vanes are designed to lower internal fluid speed without sacrificing total...
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7056168 |
Outboard waterjet
An outboard waterjet propulsion system for a marine vessel having a bottom and a transom with a top edge, the propulsion system comprising: an intake duct with grid bars; a motor; an impeller with...
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7052339 |
Propulsion system for a fast seagoing ship, especially a naval ship
The invention relates to a propulsion system for a fast seagoing ship, especially a naval ship, which comprises a propulsion system driven by at least one water jet produced by a pump assembly with...
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7048598 |
Jet propulsion boat
To provide a jet propulsion boat that enables preventing the occurrence of cavitation. In a jet propulsion boat that jets water pressurized and accelerated by a water jet pump from a rear jet...
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7044816 |
Jet drive and retractable rudder fin and filter systems and methods for watercraft
A watercraft is fitted with any one or combination of a retractable rudder fin and filter systems and improved jet drive systems. A retractable rudder-fin and filter system includes an...
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7040939 |
Water intake and transmission system
A water intake and transmission system for simultaneously driving dual jet units of a jet boat. According to a preferred embodiment, the water intake includes dual channels to allow the uptake of...
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7029341 |
Water jet propulsion boat having improved ride plate
A water jet propulsion boat includes a pump chamber provided at a rear portion of a boat body of the boat. Further, a water jet pump is disposed in the pump chamber and a ride plate closes a bottom...
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