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JPH0422395U |
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JPH0455192A |
PURPOSE: To eliminate necessity of landing of a boat when it is not used and to prevent adhesion of barnacles and so on in a flow passage by providing a jet unit with a rotating means in compact structure. CONSTITUTION: When a driving mo...
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JPH04500898A |
PCT No. PCT/DE90/00558 Sec. 371 Date Mar. 26, 1991 Sec. 102(e) Date Mar. 26, 1991 PCT Filed Jul. 24, 1990 PCT Pub. No. WO91/01915 PCT Pub. Date Feb. 21, 1991.A method and an apparatus for propelling water vehicles in surrounding water ar...
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JPH0414597U |
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JPH0429556A |
PURPOSE: To increase a current made to flow into a superconducting magnetic field, by a method wherein a cathode chamber and an anode chamber are made by a bipolar membrane, a current is made to flow through, water inside the bipolar mem...
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JPH04878B2 |
A power operated surfboard which has a raised rear hollow portion at the rear in which is disposed an impeller housing having an impeller therein and a water discharge passage extending rearwardly from the housing. An internal combustion...
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JPH03128596U |
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JPH03292289A |
PURPOSE: To prevent vibration of a ship hull and the generation of noise due to the vibration by supporting both the casing of a water jet unit and a power transmission system with a vibration insulating member therebetween in a state to...
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JPH03281494A |
PURPOSE: To enable a swimmer to be propelled under water in any direction with any speed by providing a submarine pump, at least one nozzle connected to the pump to jet water, a device for adjusting water flow to the nozzle and further a...
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JPH03273994A |
PURPOSE: To prevent the push-in of the bow at the time of reversion by inclining the rear edge of a ladder for changing the jetting direction water for steering, and rotatably supporting a deflector under the ladder. CONSTITUTION: A wate...
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JPH03243491A |
PURPOSE: To reduce noise by providing an exhaust housing for forming a gas cushion for preventing water from flowing into an exhaust passage of an engine through a discharge means in non-operating, in a power operated surfboard for injec...
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JPH03213496A |
PURPOSE: To prevent the occurrence of cavitation and to improve water suction performance by moving a part, located in the vicinity of a suction port, of an intake duct, the suction port of which is formed in a ship's bottom, in a direct...
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JPH03213495A |
PURPOSE: To improve propulsion efficiency especially during low speed sailing and to prevent the occurrence of cavitation by providing a pump impeller with a pump efficiency varying means and providing a variable nozzle to change the eff...
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JPH0388999U |
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JPH0389000U |
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JPH03193589A |
PURPOSE: To stabilize a ship 1 in good performance by sensing the momentary rolling angle of the ship or a parameter associated therewith, controlling the direction of the waterjet, and lessening the rolling angle. CONSTITUTION: A contro...
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JPH03169797A |
PURPOSE: To obtain a good propelling efficiency even when a boat cruises at a speed other than a high speed by composing a nozzle provided at the stern with a main nozzle of a constant jet orifice, and an outer nozzle whose jet orifice i...
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JPH0347238B2 |
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JPH03164394A |
PURPOSE: To prevent contamination of outer plates by exhaust gas and exhaust noise by installing a covering material detachably on the lower side of a propulsion engine, and penetrating an exhaust gas pipe from an engine through a housin...
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JPH03153493A |
PURPOSE: To make it lighter in weight, reduce a setup space as well as to simplify a steering system in structure by forming a cylindrical part solidly in a duct rear edge, and installing a rudder combined cylindrical part blocking main ...
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JPH03118293A |
PURPOSE: To adjust a sectional area completely by driving an auxiliary nozzle vertically according to the degree of traveling speed inside a main nozzle where a rear end is reduced in its diameter in the case of changing the sectional ar...
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JPH03114994A |
PURPOSE: To produce higher propulsion force by giving the outside of an impel ler a deflection plate which extends tangentially and defines a water inlet and a water outlet, and fitting a bent deflection plate guiding water at the end pa...
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JPH0345396U |
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JPH0345395U |
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JPH0329638B2 |
The invention relates to a reversing means in a marine- water-jet propulsion unit, which includes a pump (4) having connected thereto a nozzle tube (14) for directing the driving jet of water. The lower wall (14a) of the tube is provided...
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JPH0342800U |
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JPH0396497A |
PURPOSE: To prevent the repeated action of a load upon a drive shaft and a pump vane side bearing by providing a telescopic elastic material in a gap between the pump vane side bearing and a bearing case. CONSTITUTION: At a given time wh...
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JPH0322358B2 |
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JPH0365490A |
PURPOSE: To rectify water and to improve propulsion efficiency by arranging at least two sheets of garbage removing plates for removing garbage attached to a grill and by providing these removing plates at the upper part of an intake por...
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JPH0365491A |
PURPOSE: To simplify structure and to enable adjustment of the diameter with more stability by moving or rotating a plurality of blades in the radial direction through operation of a mechanical operating means so as to make the diameter ...
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JPH0324500U |
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JPH0310155Y2 |
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JPH0342398A |
PURPOSE: To reduce the size of the whole of constitution by a method wherein, in a device having a deflector for steering mounted to the tip of a nozzle for propulsion, a biparting type bucket to switch forward and reverse by opening and...
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JPH0311955B2 |
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JPH0331090A |
PURPOSE: To safely propel a boat or the like with thrust generated through centrifugal force by providing partitioning plates between both pipes of a one- side spread double pipe, in which the inner pipe is blinded, and rotating the doub...
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JPH0321587A |
PURPOSE: To enhance the steering efficiency by providing a duct at the outlet from a nozzle of a water jet propulsive machine in such a way as capable of swinging the head to the left and right, furnishing a main jet at the tail of this ...
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JPH038994U |
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JPH034431U |
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JPH02149398U |
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JPH02299996A |
PURPOSE: To reduce the revolving component of the flow of water injected through an injection nozzle and to improve propulsive efficiency by a method wherein a guide vane for straightening the revolving flow into a parallel flow, a groov...
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JPH0246475Y2 |
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JPH02144900U |
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JPH02135396U |
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JPH02124797U |
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JPH02254094A |
PURPOSE: To enable execution of safe reversing by a method wherein a reverse bucket having a curved inner surface is rockably mounted to a nozzle through which high pressure water is injected, an injection flow can be switched to the fro...
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JPH02241892A |
PURPOSE: To prevent the spin state at the time of a quick turn by inclining the center axis by a specific angle in the longitudinal direction against the vertical axis in a small speedboat provided with a jet nozzle at the bottom of a st...
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JPH02237892A |
PURPOSE: To freely control the movement of a hull by forming an annular body by setting the opposed sides among a plurality of square-shaped superconductive coils 1 and arranging said annular body in a hull and arranging at least a pair ...
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JPH02208193A |
PURPOSE: To enable playing of various marine sports and spending of leisure by a method wherein a water jet engine is mounted to the boat bottom, a handle part is protruded rearwardly of a part of a ship hull, and a user rides on other w...
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JPH02100993U |
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JPH0299093U |
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