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WO/1992/005621A1 |
A thrust generator which has a structure wherein a helical thrust duct (2) is rotatably supported inside a hollow portion of a superconductive magnet (1) of a solenoid coil type, positive and negative electrodes (8 and 9) are so bonded t...
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WO/1992/000221A1 |
A hydraulic pulse jet apparatus for propelling vehicles through aqueous media. Water is sucked into a chamber by means of a membrane, and a spring or air is compressed, whereafter the membrane returns to its starting position and forces ...
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WO/1991/009773A1 |
Water-jet drive for water craft with a nozzle whose effective cross-section can be altered depending upon the water flow rate to pump rotation speed = constant ratio, as can its effective direction of propulsion, the effective nozzle cro...
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WO/1991/007806A1 |
A thrust generator in which a spiral duct (2) is inserted in the hollow interior (4) of a solenoid-type superconductive magnet (1). A positive electrode (9a) is arranged on one side in the duct (2) and a negative electrode (9b) is arrang...
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WO/1991/005695A1 |
A vessel (10) has a semi-displacement or semi-planing round bilge hull (11) characterized by low length-to-beam ratio (between about 5.0 to 7.0) and utilizing hydrodynamic lift. The bottom (15) of the hull (11) rises toward the stern (17...
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WO/1991/004907A1 |
The invention defines a propulsion system (10) for an underwater vehicle (40). More particularly, the invention describes a turbo-hydroduct propulsion system which operates on stored, high energy fuel (48). The fuel is combusted and powe...
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WO/1991/001915A1 |
A magnetic field (B) and an electric field (E) with essentially mutually perpendicular field lines (37, 41) are produced in a tube (31) through which the surrounding water flows. The resultant force acts on the charge carrier located in ...
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WO/1990/015751A1 |
A pair of integrated water propulsion and hydrofoil systems (20) capable of moving through water at speeds of at least 20 miles per hour are disclosed. Each having a hydrofoil (26) and a mounting leg (28) removably secured to a water pro...
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WO/1990/015753A1 |
A water jet propulsion module (10) is generated about a central axis and has an inlet opening and a discharge opening concentric with said axis. The module includes a stator (14) having an inner wall and an outer wall with curved stator ...
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WO/1990/014265A1 |
A magnetic field (B) and an electric field (E) with essentially mutually perpendicular field lines (37, 41) are produced in a pipe (31) through which the ambient water flows. The resultant force is exerted on charge carriers located in t...
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WO/1990/011928A1 |
The main rotor (1) assembled at bow (3) of hull (4), crosswise to sheer plan, consists of two or more units of cylindrical wheels (5) provided with blades (17). Each unit of cylindrical wheels (5) is provided with its own independent bra...
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WO/1989/012741A1 |
An adjustable converging-diverging nozzle (10) includes a body (11) having a flow passageway (14) therethrough. The passageway is configured to define an entrance section (18), a narrowed throat section (19), and an exit section (20). Tw...
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WO/1989/009724A1 |
An MHD (magnetohydrodynamic) propulsion arrangement for ships or other marine vessels, in which the magnetic field is trapped in a closed path (B) by solenoids (51) and, optionally, magnetic shunts (52). The interacting current (I) is th...
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WO/1988/009288A1 |
The present invention briefly concerns a reversing device of a jet propulsion assembly for ships. The jet propulsion assembly comprises a steering means (20) connected to the outlet side of a pump (6), for steering the driving water jet,...
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WO/1988/009287A1 |
The present invention briefly concerns a jet propulsion assembly for ships, said assembly comprising a propeller pump of axial or semi-axial type. The propeller pump has a pump housing (6), the inlet side of which is connected to a water...
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WO/1988/005008A1 |
A water jet propulsion unit for watercraft includes a propeller pump housed in a pump housing (3) which has provided therein an inlet opening (3a) which is connected to a water delivery conduit (6) extending to a water intake opening (7)...
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WO/1988/002719A1 |
A boat propeller installation (1), in particular for motor boats, has a propeller driven at engine speed and provided with blades (5) having step bearings (7) that can pivot around threaded bolts (6) screwed into a propeller star wheel (...
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WO/1988/000903A1 |
Propulsion for boats (10) by jets of compressed air inside a pair of parallel longitudinal channels (11) open underneath, placed below the hull, substantially horizontal, one on each side of a third wider axial channels (13) suitable for...
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WO/1987/003264A1 |
A body surrounded by a fluid is moved in a specified direction by a drive system (1) which creates a negative pressure by sucking in the fluid from the environment, increasing the speed of fluid flow in relation to the body by adding ene...
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WO/1987/001353A1 |
In order to make it possible to accelerate a fluid traversing the present device while avoiding important frictions and efficiency losses, the device according to the invention is essentially comprised of a combination of two main member...
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WO/1986/001483A1 |
A propeller drive with contra rotating propellers (3 to 6) where the shafts (13) of the outer propellers are supported by bearings inside the hollow shafts (14) of the inner propellers. The number of the propellers is at least four arran...
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WO/1985/004931A1 |
New system of rotary propeller pump for high speeds of revolution and high outputs, characterized in that the propeller is comprised of a single blade (S) on the shaft (1) or on the useful cylinder (6-6'). The linear speed and the flow r...
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WO/1984/003077A1 |
A jet propelled boat (10) whose propulsion unit is very compact vertically and in which entrance of the water into the exhaust system is effectively prevented. The jet propulsion unit includes an engine (42) having a vertical output shaf...
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WO/1984/001759A1 |
The hydro jet is comprised of a body (1), with propellor impeller (4), which sucks the liquid through the diverter ribs (9), and deflector ring (10). The liquid is accelerated through the diverter ribs (6), and diverter body (8), with in...
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WO/1984/001758A1 |
A turbo jet pump comprising a driven shaft (6) having, attached impeller blades (13), rotor blades (17) rotatable freely rotatable on shaft (20), the pumped liquid being forced past diverter ribs (14 and 21) at increasing velocity.
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WO/1984/001760A1 |
Hydro turbo jet comprising a body (1) having an impeller (10) having (13) blades which force induced liquid through diverter ribs (14), past reactor wheel (18) which freely rotates on shaft (20), past diverter ribs (21) and exits past di...
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WO/1983/000125A1 |
A hydrojet pump comprising a driven rotor (5) having three sets of longitudinally spaced blades, comprising compression blades (6), transfer blades (7), reactor blades (8), arranged to increase the velocity of the fluid admitted into the...
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WO/1981/001540A1 |
A power operated surfboard which has a raised rear hollow portion (13) at the rear in which is disposed an impeller housing (34) having an impeller (66) therein and a water discharge passage (69) extending rearwardly from the housing. An...
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WO/1981/000992A1 |
It comprises primarily an ejection tail (2) which allows by its rotation to manoeuver in all directions, both fowardly and rearwardly. The device may be used for all surface vessels.
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WO/1980/000948A1 |
Vessel having a chamber (1) which is watertight from the remainder of the interior of the vessel, a water inlet (7) in the hull of the vessel communicating with the interior of the chamber and steering and propulsion means comprising a c...
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JP2024047389A |
[Problem] To provide an excellent ship propulsion device that utilizes waves, based on new ideas and principles, that can easily realize a self-propelled ship that can travel by converting the vertical motion of waves into jet propulsion...
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JP2024039840A |
[Problem] To improve the operability of a ship in a bow-up attitude. [Solution] A water jet propulsion boat consists of a hull, a drive source disposed in the hull, a jet propulsion mechanism that generates propulsion force for the hull ...
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JP2024025481A |
A new configuration for displacing a direction changing member is provided. A water jet propulsion boat includes a hull, a jet generating device, a direction changing member, a steering device, and a displacement mechanism. The direction...
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JP2023160493A |
To improve backing performance of a vessel.A reverse bucket 40 includes: a vertical ridgeline 41 that faces an ejection opening 31 of a deflector 30 in a backing posture; first and second entrance ranges 51L, 51R that are separated to th...
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JP7368008B2 |
Propulsion device with outboard waterjet for marine vehicles, which comprises a nacelle (2) which at its interior houses a propeller (3) constituted by a pump (11) actuatable for generating a flow of fluid through the nacelle (2) accordi...
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JP2023131038A |
To provide a vessel, a vessel control device, and a method and a program for vessel control capable of maintaining the vessel in a state where stern or bow is abutted to a vessel abutting object without any need for mooring or maneuverin...
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JP2023112800A |
To provide a jet propulsion boat capable of reducing time and effort for determining the state of a jet pump.A jet propulsion boat 1 includes a hull, a driving source arranged in the hull, a jet pump 4 to generate the propulsion by sucki...
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JP7292827B2 |
To improve maintainability of a propulsion device for a vessel.A propulsion device for a vessel of one embodiment includes: a main shaft for transmitting rotational driving force to a rotary vane, a stern tube sealing device provided in ...
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JP2023082217A |
To provide a planing boat capable of making sharp turns and being easily navigated by being capable of sudden change of direction.A planing boat includes a hull with a riding portion and a propulsion device. The planing boat is constitut...
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JP2023077286A |
To provide a fluid device capable of being moved and capable of transporting fluid at an arbitrary location.The fluid device includes: a transporting mechanism 122 for transporting fluid; a fluid mechanism (body unit 121, a first water d...
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JP2023067296A |
To centralize human resources and material resources for researches, developments, designs, and manufactures in a displacement-type on-water sailing body by placing no propulsion equipment at the stern so as to eliminate mutual interfere...
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JP2023067297A |
To reduce overall drag of a sailing body by eliminating the pressure near a stagnation point in a bow of a sailing body, and by obtaining a part or all of the thrust for a sailing body without increasing frictional drag.An inflow opening...
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JP2023053982A |
To provide a jet propulsion unit for a vessel including a diffuser/confusor, a steering control nozzle assembly, and a radius.A radius is introduced at a transition point between a diffuser/confusor and a steering control nozzle assembly...
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JP2023051462A |
To improve freedom in hull design.An actuator has a housing and a rotating member extending from a water flow direction change unit for changing direction of the ejecting water flow and connected to a cable inserted inside the housing an...
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JP2023051447A |
To correctly set a reference position of a rod driving part.An actuator comprises: a rod driving part that moves a rod, which is connected to a water flow direction change part for changing a direction of an ejection water flow and adjus...
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JP2023051456A |
To reduce a load on a long member.An actuator comprises: a driving part that rotates a long member, which is connected to a water flow direction change part for changing a direction of an ejection water flow and adjusts an angle of the w...
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JP2023051450A |
To correctly control a water flow direction change part such as a reverse gate without disassembling a device for detecting a rotation amount of a motor.An actuator comprises: a rod driving part that moves a rod, which is connected to a ...
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JP2023044489A |
To prevent complication of an internal structure of a hybrid ship propulsion machine and inhibit deterioration of cruising performance of a ship during planing.A hybrid outboard engine 1 includes: an internal combustion drive propulsion ...
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JP2023041477A |
To provide a ship propulsion unit with a bent flow channel, capable of miniaturizing a propulsion unit and capable of suppressing thrust decrease by suppressing water backflow and vortex generation in a bent flow channel and by having su...
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JP2023011404A |
To provide a vessel lower frame support system, a vessel controller, and a method and a program for vessel lower frame support capable of achieving a safe and simple lower frame work for a vessel.A vessel lower frame support system for s...
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