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JP2005145352A |
To provide a baffle fin device and a vessel equipped with it having no influence upon the propelling performance and capable of reducing the varying pressure generated by a propeller and reducing the influence of the varying pressure upo...
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JP2005515937A |
The holding device comprises an annular element (5) placed round the motor shaft (1) and with at least one releasable attaching device. The ring is U-shaped in cross section, with the aperture facing the center of the element. There is a...
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JP3640428B2 |
PURPOSE: To restrain pitching and heaving movement of a ship for realizing calm navigation by providing a slope forming a specific angle between a reference line of the ship and a line extended to a point on a surface apart at a specific...
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JP3638576B2 |
To allow prompt lateral movement and turn of a hull by securing the thrust of a side thruster for a marine vessel with no cavitation danger and setting both boards to have almost the same thrust with the same rotating speed. The side thr...
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JP2005067436A |
To provide a ship propulsion unit which is applied to a single screw ship having a streamline stern to enhance the efficiency during navigation, capable of easily and reliably performing the single drive navigation by any one of two sets...
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JP3618560B2 |
To dispense with any electric motor installation space or a slip ring in a hull, to miniaturize a pot, to enable the use of a compact electric motor which is high in speed and low in torque, and to easily attach/detach the electric motor...
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JP3607110B2 |
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JP2004537680A |
A propulsion linearizing mechanism is provided for linearizing a fluid flow. The mechanism includes a frame having a cylindrical outer baffle which rotatably supports a plurality of propeller elements thereon. Each propeller element defi...
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JP2004533363A |
The hydrojet boat submerged propulsions system is low noise and has good output. It comprises principally a hydrojet propulsion system comprised of a hydraulic screw (7) feeding a helico-axial pump (8) emerging through downstream guide v...
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JP2004306839A |
To reduce the propulsive resistance of a ship by suppressing the generation of tip vortexes in the neighborhood of a blade tip of a reaction fin of the ship.The ship includes a hull (1), stern structures (4, 7) provided on the stern of t...
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JP2004532151A |
The present invention relates to a vessel propulsion system and, more specifically, to a vessel propulsion system with improved efficiency and which leads to reduced wave formation, which comprises a propulsion device immersed at least p...
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JP2004249874A |
To provide a contra pod propulsion device capable of reducing resistance component against the propulsion of a vessel and providing a part of a thrust.In this contra pod propulsion device, a plurality of blades are disposed on the pod pa...
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JP2004237778A |
To provide a course stabilization device for a vessel with a pod propeller for stabilizing a course of the vessel by providing a rudder plate projectable sideward at a pod side in view of a strong flow along the side face of a pod propel...
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JP3557453B2 |
A blade design for a counter-rotating propeller system improves the performance of the outboard drive on which is it employed when the propellers are run partially exposed. The propeller system includes a pair of counter-rotating propell...
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JP2004230970A |
To appropriately keep a distance from a sea surface in a method having small resistance of water, in an paddle boat using a ground effect of keeping an appropriate distance from the sea surface and water surface using the paddles.This pa...
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JP2004231102A |
To provide a structure for arrangement of a hull and a propeller of a waterborne navigation ship, by which obstructions in propelling the ship can be reduced.The structure for arrangement of the hull and the propeller of the waterborne n...
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JP3544545B2 |
PCT No. PCT/EP95/04481 Sec. 371 Date Apr. 14, 1997 Sec. 102(e) Date Apr. 14, 1997 PCT Filed Nov. 14, 1995 PCT Pub. No. WO96/15028 PCT Pub. Date May 23, 1996A watercraft drive has a double rudder propeller driven by a driving engine via a...
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JP3539591B2 |
To stably suck engine cooling water even at the time of high mount sailing by making the length from the center of a shift rod to the leading edge of a lower case larger than the length from the center of the shift rod to the center of a...
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JP3541082B2 |
PURPOSE: To decrease exhaust resistance by forming an exhaust passage on a first propeller device on the front side, and forming the outside diameter of a hub member of a second propeller device on the rear side smaller than the inside d...
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JP3539573B2 |
PURPOSE: To provide a marine propulsion device by which engine output can be enhanced by reducing exhaust resistance by preventing inflow of water to an exhaust passage from respective external cylinders of front and rear propellers. CON...
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JP3539592B2 |
To hold down the frictional resistance of a propeller to the minimum by building a counter-rotating mechanism in a lower case, forming an exhaust passage in a boss part of at least the front propeller, and communicating the exhaust passa...
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JP3537551B2 |
To obviate the generation of abnormal sounds when a propeller shaft is changed over to normal rotation or reverse rotation and improve the operability for the change-over of the forward and backward drive. A propeller shaft 26 is journal...
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JP3534276B2 |
To secure a cooling conduit for cooling water, and lower the position of a cooling water inlet. The propulsion device for a vessel includes a lower case 14 at the lower part of the propulsion device, disposes both a power transmission me...
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JP2004142552A |
To provide an automobile transportation ship capable of securing a huge section expanded in the longitudinal direction in the central part in a hull width direction under a freeboard deck as a space for vehicles to load more vehicles and...
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JP2004513022A |
A stern unit of marine craft that comprises a casing for housing a shaft, a propeller, and at least one rudder actuated by hydraulic pistons is described. The casing is open at the bottom, with its bottom surface having a parabolic shape...
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JP3522390B2 |
PURPOSE: To provide a contrapropeller unit for an outboard motor, capable of improving a handling operation in times of turning and sailing, and of reducing a handle load, besides making the effectiveness of a handle into being more susc...
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JP2004106563A |
To solve the problem wherein variation of force generated by a propeller increases when taking a large rudder angle, the entire pod propeller therefore vibrates to cause uncomfortable hull vibration or failure of related equipment.A stru...
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JP2004106566A |
To solve a problem wherein variation of force generated by a propeller increases when taking a large rudder angle, the entire pod propeller therefore vibrates to cause uncomfortable hull vibration or failure of related equipment.A strut ...
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JP2004106565A |
To solve the problem wherein turning flow coming from each blade of a propeller concentrates at the back end of a pod to form strong spiral turning flow at the back of the pod.The pod 3 is supported in a hull 9 via a strut 2, the propell...
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JP2004106774A |
To ease the local wake peak just above the propeller shaft and near 70 to 100 % of the radius of the propeller.The streamlining device of sternward flow rectifies the flow of the sternward flow of the ship. A support body 14 is verticall...
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JP2004106582A |
To provide a vessel and its operation method, which makes the best use of driving force by the rotation of a POD propeller by making a flow flowing into the POD propeller stable and satisfactory, in obtaining the driving force by rotatin...
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JP2004509808A |
The present invention relates to an installation arrangement for a ship's propulsion unit comprising a modular motor unit (1) located outside the ship's body. Said motor unit comprises a motor (25) and a propeller (5) and it is intended ...
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JP3508811B2 |
To prevent the generation of the turbulent flow such as a swirl or the like, by the inflow and outflow water current, and obtain the strong thrust, by installing the sucked water guide blades respectively on the sucked water inlet and ou...
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JP2004082930A |
To provide an azimuth propeller capable of reducing noise and hull vibration by reducing or relieving noise and impact pressure generated when air bubbles due to cavitation generated at a strut of the azimuth propeller are collapsed and ...
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JP3500590B2 |
PURPOSE: To enable it to a high-speed sailing even in either direction of the stem and the stern by setting up a propeller and a rubber in both sides symmetrically on the hull center, decelerating propeller at the fore head side to a lit...
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JPWO2002030741A1 |
A suction casing (4a) including a suction port (4a) opened at the bottom of the ship (1b), a suction flow path (4b) inclined rearward from the suction port (4a), and a horizontally formed impeller chamber (4c). 4) is arranged at the bott...
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JP3498269B2 |
PURPOSE: To increase the loading capacity by a static pressure, and to suppress the oil feeding pressure at a low value, by forming plural lines of radial oil feeding holes to a bearing provided between an inner shaft and an outer shaft,...
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JP3491308B2 |
PURPOSE: To provide a propulsion device for a vessel which can improve the acceleration performance with a simple constitution in a double propeller structure. CONSTITUTION: As for a propulsion device for a vessel which is equipped with ...
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JP2004009944A |
To enhance silence and performance of a vessel by suppressing the occurrence of cavitation.A post 41 of a thruster wall 12 of a hull is provided with a generating mechanism 50 for generating an ocean current in an opposite direction to a...
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JP3479328B2 |
PURPOSE: To prevent functional lowering of a packing and to prevent contamination of outside water due to outflow of lubricating oil by taking measures of connecting a supply conduit to a packing of an inside shaft to a conduit extending...
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JP3479941B2 |
PURPOSE: To provide a marine propulsion device which can be easily incorporated into an outboard motor or the like by replacing a part of the outboard motor or the like in which a counter-rotating system is not adopted and can generate s...
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JP3476931B2 |
PURPOSE: To minimize a manufacturing cost of a propeller shaft system by suppressing excessive torque generated by unbalance of transmission torque. CONSTITUTION: A ship propulsion engine, wherein output from a main engine 3 is transmitt...
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JP3477568B2 |
To efficiently convert the kinematic energy of the bilge vortex to be induced by the navigation of a hull into the propulsion of the hull. In a vortex energy recovery device, each main fin 8 is mounted on the surface of a hull 1 on the p...
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JP3477564B2 |
To convert the energy of a bilge voltex flow into a propelling force and to reduce ship resistance by attaching fins, one each, to the hull surface of left and right gunwales in the front side of a propeller providing the wing root part ...
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JP3470431B2 |
PURPOSE: To enable a marine vessel to go astern rapidly without generating turning motion. CONSTITUTION: A propeller pot 10 is fixed to the lower end part of a strut 3 rotatably hung from a stern part 1 through a bearing 4. An outer prop...
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JP3469278B2 |
PURPOSE: To improve acceleration through simple structure through it is of double propeller structure. CONSTITUTION: A propulsion device for a ship is provided with an internal combustion engine 9 arranged at the upper part in a casing 8...
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JP3470140B2 |
PURPOSE: To obtain high motive power performance by securing an exhaust passage having a sufficient cross-sectional area. CONSTITUTION: In a marine propulsion device 1 which has a pair of front and rear vertical bevel gears 12 and 14 to ...
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JP3469273B2 |
PURPOSE: To improve thrust efficiency by recovering swirl stream which is generated by a rotating screw propeller for forming a thrust part, in the rear of the screw propeller and which is consumed as wasteful energy, by means of a fin p...
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JP2003327196A |
To provide an outdrive device for a model boat capable of providing stable driving force in a whole rotating region without lowering output in a high rotating region.The outdrive device to be set on a stern of the model boat is constitut...
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JP3462475B2 |
To improve the frictional resistance in a small ship. This stern propulsion device producing the propulsion force by receiving the transmission of the motive power of a main engine 1 in a hull comprises a transom box 4 mounted on the ste...
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