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JP2001260987A |
To provide an underwater discharging device for exhaust gas in a ship capable of increasing the propulsion efficiency of the ship with a simple and low-cost means without requiring a special device by absorbing the carbon dioxide in the ...
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JP3207612B2 |
PURPOSE: To generate all-directional thrusts with one pump, reduce the weight of a propulsive device, and simplify the device by taking a means such that each water flow duct is arranged to extend in three directions of longitudinal, lat...
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JP2001239995A |
To provide an underwater discharge device for exhaust gas in a ship, capable of raising propulsion efficiency of the ship and absorption efficiency of carbon dioxide with a simple and inexpensive means and without requiring any special d...
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JP2001233290A |
To provide a small, lightweight and excellently manageable hull propelling machine.A propelling part 106 for housing a motor-driven pump for arranging a water supply port and a water discharge port on both ends is arranged in a tip part ...
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JP2001225794A |
To provide pollution-free ship having no possibility of polluting the water and the atmosphere by using a motor as the drive source of the propulsion unit of the water jet-propelled ship, and using a fuel cell or a storage battery as its...
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JP2001225795A |
To easily install a water jet device on a cavity formed on a hull.A ship is provided with an inlet inclined path 6 increased in height as extended backward and the cavity 5 communicated with the rear section of the inlet inclined path at...
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JP2001219895A |
To accurately stop an injection nozzle in a vertically rocking position at which stopping is required, and to improve an operation feeling.The injection nozzle 9 of a jet propelling machine is controlled so as to be vertically rockable i...
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JP2001213394A |
To enable a boat owner to get close to a pump jet device so as to be able to remove a fragment from an inlet of a pump jet device in an inspecting position.The boat or the other marine vessel comprises an inboard engine 8, the outboard p...
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JP2001213389A |
To provide a jet boat permitting the enjoyment of both a wake board and bass fishing in an optimum state.In this jet boat 1 equipped with a jet propulsion device 6 at the rear lower part of a boat body 4, flat decks 8, 9 are provided at ...
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JP2001206290A |
To provide a water jet propulsion unit reduced in its total length, capable of decreasing frictional resistance of a high pressure stream and producing a streamline effect. In this propulsion unit adapted to pressurize water sucked from ...
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JP3194638B2 |
PURPOSE: To provide an under liquid propulsion device capable of prolonging a lifetime by avoiding poisoning of an electrode substance and efficiently converting an electromagnetic force generated to a propulsion force which has been dif...
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JP2001191992A |
To provide steering tabs for jet propelled planing boat capable of continuously steering the boat even when the water jet quantity from a propulsion pump is decreased. The steering tabs 1, 201, 301, 401 capable of changing the water resi...
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JP3187576B2 |
PURPOSE: To enable a mounting flange for a propulsion machine to be properly mounted onto a partitioning wall between an engine room and a recessed section for the propeller. CONSTITUTION: An engine room 20 and a recessed section 40 for ...
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JP2001509104A |
Disclosed herein is a jet propulsion unit comprising a housing including a wall defining a water tunnel having therein a water outlet port, and a recess located in the wall defining the tunnel and in surrounding relation to the port, and...
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JP2001180588A |
To provide a water jet device in which a shift and steering control device is capable of penetrating a horizontal part of a full. This water jet device is provided with a shift and steering control part installed on a horizontal hull par...
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JP2001180589A |
To provide a water jet device provided with such a simple constitution that can be relatively easily installed on a hull. This water jet device is provided with a single drive shaft 26 rotatably supported by a pair of shaft bearings inst...
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JP2001180593A |
To provide a water jet device in which an operator of a hull is capable of steering it when advancing and retreating in similar ways to those for steering an automobile. This water jet device comprises a retreating gate 80, and by this r...
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JP2001174477A |
To provide a wet bike with a speedometer sensor which is prevented from being caught in floating objects such as water plants and sea weeds to be immovable and in which durability is improved.A speedometer sensor 1 to measure speed on th...
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JP2001171597A |
To provide a pump jet device having a double wall stator housing including an annular passage capable of flowing an exhaust gas.A gas enters into an annular portion 96 through a port 98 formed on an outer stator shell 86 at an exhaust ga...
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JP2001164936A |
To make an inlet system straight, and ensure a pipe length of an exhaust system, without enlarging a space required in a case where an engine for surface travelling boat is mounted on a hull.This engine 3 for surface travelling boat is m...
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JP3176567B2 |
To set lower end of a transom above a draft line to reduce wave- making-resistance with keeping an impeller under water during stopping of a pump part, by separating a nozzle from the pump part, placing it above the pump part, and commun...
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JP3174185B2 |
PURPOSE: To prevent water from entering an engine, even if a hull is turned over to either side, regarding a relatively small hull structure. CONSTITUTION: A V-type engine 1 with a pair of right and left cylinder trains (bank 12) is inst...
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JP3171394B2 |
To provide a pump jet propeller with thrust control device which is made possible to deny the unbalanced torque generated by the rotation of a propeller, by the fluid force of a jet stream operating to a flap, as well as can run an under...
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JP2001138988A |
To provide a pump jet that generates thrust loss by the control of the axial flow of water passing a device by blowing exhaust gas into pump jet water flow. The effective flow density of an outlet medium is reduced by adding gas to main ...
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JP2001138991A |
To prevent drift during the low speed run of a boat and cavitation during the high speed run of the boat to improve running performance by changing the quantity of jet water from a discharge casing depending on the high speed run and low...
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JP2001138990A |
To change the spectrum of noise generated from a pump jet. A wear-resistant perforated liner 66' is inserted in a peripheral recess formed on the inner surface of a rotor housing 32, to surround the tip area of a rotor. Through holes or ...
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JP2001138989A |
To provide a bearing cooling device prevented from the inflow of dust and the like regarding a cooling device for a water jet propulsion machine. In the water jet propulsion machine, a bearing box 13 of a main shaft 12 fitted with an imp...
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JP3167898B2 |
To facilitate the examining work of a water jet propulsion machine, and to make an effective use of a deck area on a stem deck. In a water jet propulsion craft in which a water jet propulsion machine 4 is installed on a stem part, and an...
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JP3167827B2 |
PURPOSE: To form a means for preventing propulsion resistance from being increasedby decompressing a step part by sailing of a ship in a simple and inexpensive structure. CONSTITUTION: A water jet propeller 2 is installed in the stern bo...
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JP2001130487A |
To provide a screen device capable of easily removing the underwater suspended matter adhered to a screen installed at a water inlet for jet water so as to recover the function of the screen in a water jet propelling ship. In a water jet...
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JP2001130489A |
To solve the problem that, in order to increase a thrust of a water jet propelling device, the device must be increased and accordingly the size and weight of a hull furnished with the device are increased, and the amount of increase in ...
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JP3164421B2 |
PURPOSE: To provide a water jet propeller ensuring freedom from the possibility of clogging a pipe line due to a foreign material mixed with water flowing in a duct. CONSTITUTION: This propeller is equipped with a stationary blade duct 3...
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JP2001122191A |
To provide a compact bearing device preventing interfusion of water of a water jet propulsion machine with lubricating oil of the bearing device. In this bearing device, a bearing 16 pivotally supports a main shaft 13 of an impeller 6 of...
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JP2001106190A |
To provide a pump jet capable of minimizing the mismatching in the speed and direction between an exhaust gas current and the pump jet, and improving the performance. This ETV-type pump jet has a stator housing provided with an attaching...
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JP2001090590A |
To make exhaust gas clean by activating a catalyser even when a fuel injection engine is at a low speed, equivalent to a rotating speed in trawling. A catalyser 12 is provided in an exhaust passage 9 for an fuel injection engine 1. A con...
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JP2001088790A |
To provide a suction air muffling structure of a small planing vessel capable of realizing reduction of noise by restraining noise leaking out of a vessel body low. A suction air muffling structure of a small planing vessel is constitute...
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JP2001090576A |
To automatically control the excessive or short supply of fuel during jumping-up or splashing-down, even when a fuel injection engine is used. The opening of an exhaust control valve 10 provided in an exhaust port 9a of an fuel injection...
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JP2001080580A |
To prevent unsteady operations in low speed cruise and cavitations in high speed cruise of a propulsion device controlling a jet port open ratio suitably for a cruising speed by switching a cross section area of an outlet casing jet port...
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JP2001073763A |
To attain enough muffling effect and prevent fall of output derived from collecting of cooling water in the muffler. This muffler is provided with water muffler 10 which lowers exhaust sound with exhaust gas G from cylinders mixed with w...
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JP2001503708A |
A water jet propulsion unit suitable for use in outboard or stern-drive configuration in motor boats. The unit has an intake section, a pump section and a drive section within which is incorporated a pressure control device and nozzle. I...
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JP3137991B2 |
A blockage preventing apparatus used for a water jet propulsion unit (2) provided with a casing member (50) including a lower opening (7) at a front end, a transom opening (30) at a rear end and an internal space (51) between said lower ...
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JP2001048091A |
To reduce noise caused by water pressure fluctuation by an impeller and to improve a degree of freedom of change in form of a water suction duct. By fixing a duct component 33 formed by an FRP separate from a hull member 1 to a duct rein...
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JP2001030989A |
To improve the navigating performance by adjusting the opening ratio of a nozzle at a discharge casing according to the navigating speed. A nozzle 9 of a discharge casing 7 is of double structure comprising a center nozzle and an outer c...
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JP3129696B2 |
A body having a propulsion system comprising an inlet (7, 29, 46) and means (6, 28, 43, 45) for drawing fluid through said inlet to be used to propel said body characterised in that said inlet (7, 29, 46) is disposed along a substantial ...
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JP2001026294A |
To decrease external resistance of a water current and internal negative pressure.In a propeller adapted to pressurize water sucked from a suction casing 3 of a ship's bottom part by an impeller of a pump casing and jet the pressurized w...
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JP3121866B2 |
PURPOSE: To jet the water from a water jetting pipe certainly upwards even while the hull is in turning the head. CONSTITUTION: A jet propulsive boat concerned is structured so that an impeller 64 rotates in the flow path of a jet unit 6...
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JP2001001987A |
To make an operation easy by allowing to maintain a trim operation part at multiple positions, thereby eliminating a continuous operation.This device is provided with a trim angle change means 6 changing a jet direction (angle of a jet o...
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JP3120862B2 |
PURPOSE:To prevent suction of exhaust gas from an engine to the flow passage of a jet unit during reversing. CONSTITUTION:A jet unit 3 with a built-in impeller 20 is arranged in a recessed part 1a of the ship bottom of a stern and a wate...
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JP3121333B2 |
A jet propulsion unit for a small watercraft that incorporates a mechanism for actuating the reverse thrust bucket through an intermediate lever so as to permit a flexible cable to be employed that lies closely above the jet propulsion u...
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JP2000351394A |
To reduce suction resistance and to decrease an installation area.A propulsion unit is such that after water is sucked from the suction casing 3 of a ship bottom and a swirl flow pressurized by the impeller 6 of a pump casing 5 is straig...
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