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Patent Searching and Data


Matches 801 - 850 out of 4,972

Document Document Title
WO/1990/008061A1
This invention relates to a marine propulsion apparatus. To improve propeller efficiency by utilizing the flow in the backward direction of a propeller shaft and the flow turning in the rotating direction of the propeller, the present in...  
WO/1990/008271A1
In a device for contra-rotating two concentric shafts, one of which is hollow in order to accommodate the other, by means of at least one drive shaft which is connected to a power source, said concentric shafts are connected to each othe...  
WO/1990/006883A1
An apparatus (11) for automatically raising and lowering boat motors (17) includes a mounting configuration (21) that allows the motor to move up out of the water and down into the water. A hydrofoil (23) is connected with the motor. Whe...  
WO/1990/006256A1
A marine propulsion drive apparatus, generally referred to as a boat or vessel drive, for an inboard engine and of the type in which the input drive shaft (18) with the propeller shaft (20) extends through the stern (1) of the boat, and ...  
WO1989008580A3
An asymmetric set of pre-swirl vanes (stators) and a specially matched propeller for use on an inclined shaft. The propulsor is designed by considering the mutual interaction of the propeller on the vanes and the vanes on the propeller. ...  
WO/1989/012572A1
This invention relates to a propulsion efficiency improving apparatus for ships, used to improve the propulsion efficiency of a propeller of a ship and a propeller of an outboard motor of a small-sized ship. This apparatus consists of a ...  
WO/1989/011998A1
Double nozzle consisting of a main nozzle (1) and a flap nozzle (2), coaxially located and operating in conjunction with main nozzle (1), comprising an opening (6) formed between the two nozzle profiles by the thin part (1a) of main nozz...  
WO/1989/010299A1
An arrangement in connection with an azimuth propeller for ships to measure the angle between the rotational axis of the propeller and the longitudinal axis of the ship (azimuth angle), and the angle of attack of the propeller blades. Th...  
WO/1989/009342A1
The machine as described has one vane (12) formed as a hollow spiral and at least one blade (11) located around the rotation axis of said machine, contained in a circular casing (14) surrounding the rotor externally, comprising: said bla...  
WO/1989/008580A2
The present invention comprises a set of asymmetric pre-swirl vanes and a matched propeller, the vanes being located asymmetrically around the propeller disc. Most of the vanes are located on the side of the disk where the propeller is o...  
WO/1989/008044A1
A marine drive unit (1) includes a lower gear case (8) forming a torpedo housing (9). A pair of coaxial propeller shafts (21, 25) are rotatably mounted in the housing and carry a pair of propellers (10, 11) thereon. The propeller shafts ...  
WO/1989/008045A1
A marine stern drive for a boat (3) includes a propeller assembly (36) having a carrier (13) for a pair of centric drive shafts (12, 19) to which are mounted a pair of closely adjacent fore and aft coaxial surface piercing propellers (21...  
WO/1989/008050A1
A marine drive unit (1) includes a lower torpedo housing (9). At least one propeller shaft (21) is mounted in the housing for rotation about a drive axis (17). The propeller shaft is driven by a driving gear (16) suitably connected to a ...  
WO/1989/003341A1
The proposed propulsor comprises, a main engine, a fixed tubular part (A3, A5, A7), a main transmission (AD4, AD1, BD1, BD2) which ends with a substantially vertical shaft (BD3) which operates a bevel gear pair (BD12-BD13) on the substan...  
WO/1988/005009A1
Mechanism based on reducers and intended to obtain on two rotary shafts which are coaxial or have any direction two torques equal in intensity and reverse as to the rotational direction without transmitting any torque to the support fram...  
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 (...  
WO/1987/003856A1
A device for cutting lines liable to foul a propeller has a stationary cutting blade (24) and rotatable cutting blades (30, 32, 34). Cutting edges of the blades are formed with saw-tooth serrations. The blades are curved in their plane o...  
WO/1987/002325A1
Two centrifugal pump and paddle boat propulsion devices (2) are mounted in astern outboard positions on two swingable vanes (3), respectively, projecting aft of a boat hull (1), spaced athawrtships of the hull (1) and swingable from posi...  
WO/1987/001350A1
A marine craft (10) having a propeller tunnel (20) in which the sidewalls (31) of the tunnel are essentially parallel and vertical and mate with a descending upper surface of the tunnel which optionally can be divided into a transom plat...  
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...  
WO/1986/001174A1
A thrust augmenter for a propeller fluid drive (11) comprising a hollow substantially cylindrical body (12) having an open rear face (15) which is part circular or circular and is located closely adjacent and ahead of the propeller (11) ...  
WO/1985/005085A1
A propulsion device for ships, in which a main propeller (1) and an auxiliary propeller (3) behind the main propeller (1) are provided coaxially via planetary gears (5). The planetary gears (5) consist of a sun gear (6) provided on an ex...  
WO/1985/003270A1
A device in fluid pressure generators comprising an annular casing (4) which is peripherally mounted and driven in a through-flow channel (1). The inner face of said annular casing forms part of the wall of the through-flow channel. The ...  
WO/1985/000572A1
A self-propelled waterborne vessel has a generally flat hull undersurface aft of the bow region from which extend side walls (10) and keels (11, 12) defining longitudinally extending channels (8, 9) of which the length approximates to on...  
WO/1984/003478A1
The mounting of a thruster propeller unit (18) in the bottom plating (23) of a vessel is facilitated by the use of lifting lines (26), operable from within the vessel. Each line is made to pass a lock chamber (27) adjacent to an opening ...  
WO/1982/000811A1
Motor boat with two hulls (2, 22) comprising a superstructure (3) fixed to said hulls (2, 22) Motors (4) actuate propellers (7) fixed at the front part of the hulls (2, 22) in the space located between said hulls (2, 22). The aerodynamic...  
WO/1981/000389A1
A modification on a rudder for boats and ships, comprising a channel disposed rearward of the screw which is rotatable about a substantially vertical axis. The channel has a closed, circular cross-sectional configuration. Two V-shaped no...  
WO/1981/000242A1
Propulsion means for a vehicle capable of floating (10) comprising an engine and a further driving shaft (12) for one or more propellers (20, 21).The propellers (20, 21) are articulated about a horizontal axis which is perpendicular to t...  
JP2021054150A
To provide a water bottom shape measuring device which is advantageous for simplifying a configuration while suppressing a cost. A three-dimensional shape measuring unit 14E suspended from an unmanned flying object 14 via a support membe...  
JP2021049912A
To provide a motor-integrated fluid machine or the like capable of obtaining a sufficient load capacity even when a centrifugal force acts. In a motor-integrated fluid machine 1 in which a motor is integrally provided, a rotating portion...  
JP2021041915A
To provide a method for identifying the degree of propeller cavitation. A step of collecting a noise signal of a propeller in water, a step of obtaining a circulation density spectrum, a step of averaging and constructing an enhanced env...  
JP6841540B1
To control a ship position without being hindered by interfering with a main propulsion device by an outboard motor or an outboard motor, and when the thruster is exposed on the water surface, the thruster thrust becomes unstable and the...  
JP2021030819A
To provide an outboard motor and a ship capable of avoiding submersion at the time of tilting up while suppressing an increase in weight of the outboard motor. This outboard motor 100 is arranged in front of an engine E, a drive shaft 3 ...  
JP2021028185A
To effectively utilize a limited space in a ship provided with a propulsion device driven by an electric motor. A ship 100 is arranged between two propulsion devices 2, 2 and two propulsion devices 2, 2, and has a first electric motor M1...  
JP6832304B2
The present invention provides a ship propulsion apparatus, which is possible to collect axial flow energy generated by rotation of a propeller, and a ship. The ship propulsion apparatus comprises: a propeller formed on a stern portion; ...  
JP2021020506A
To provide a stern fin capable of improving propulsion performance by obtaining a thrust sufficient to offset resistance. A stern fin 7 is provided on a skeg 3 of a twin skeg ship and projects downward from the skeg 3. The cross-sectiona...  
JP2021021459A
To provide a bearing device capable of arranging an oil drain ring at a position close to a side wall of a stationary side member and preventing lubricating oil from leaking from between a stationary side member and a rotating shaft memb...  
JP2021021458A
To provide a bearing device capable of preventing lubricating oil from leaking to the outside of a housing. A bearing member 4 is provided at a position relative to a rotating shaft member 3 that rotates with respect to the stationary si...  
JP6831459B2
The invention provides a method for operating a marine vessel (1) comprising a plurality of propulsion units (106, 107, 108, 206, 207, 208), each being arranged to deliver thrust to water in which the vessel (1) is floating, the thrust d...  
JPWO2019215814A1
To provide a mechanical element monitoring system capable of remotely and surely monitoring a mechanical element provided in a swivel portion 3 of a swivel ship propulsion device 1 with a compact configuration. A wireless sensor device T...  
JP6827034B2
This ship propulsion device is equipped with an energy-saving appendage 5 which is located forward of a propeller 1 and which has a curved surface having a radius R smaller than the radius r of the propeller 1. The pitch of the blades 3 ...  
JP6829013B2
An electric propulsion system is described that includes at least one branch for distributing electrical power, provided by a power source, to one or more loads. The at least one branch is partitioned into one or more zones and comprises...  
JP2021011178A
To improve the turning property of a ship. A controller receives a signal indicating an operation amount and an operation direction of a steering member. When the amount of operation of the steering member is equal to or greater than the...  
JP2021011202A
To stop an engine which directly drives a part of propulsion devices among a plurality of propulsion devices while maintaining straightness of navigation in a ship provided with a plurality of propulsion devices, and at a time of low spe...  
JP6826276B1
To provide a method for identifying the degree of propeller cavitation. A step of collecting a noise signal of a propeller in water, a step of obtaining a circulation density spectrum, a step of averaging and constructing an enhanced env...  
JP6826671B2
A lifting spindle arrangement is disclosed for a retractable thruster unit of a marine vessel, the lifting spindle having a lower end and an upper end and being supported at its lower end to a lower support structure by a lower support a...  
JP2021006415A
To provide a stern addition, a stern shape, and a vessel with better energy conservation effect.A stern addition 30 attached in front of a propeller attached to a stern of a vessel includes: a duct 31 forming a partial circular shape wit...  
JP2021006451A
To provide a method for controlling low speed propulsion of a vessel moved by a vessel propulsion system having a plurality of propulsion devices.A propulsion system includes: receiving a signal indicating position of a joy stick movable...  
JP2021501089A
To provide a propulsion efficiency improving device. A propulsion efficiency improving device according to an embodiment of the present invention is arranged in front of a propeller, has an arc shape, supports a duct for generating thrus...  
JP6811629B2
This duct device 1 is provided with an inner duct 2, an outer duct 3, and a stay, wherein the opening area Ao of an outflow port 8 between ducts defined by a rear end part 22 of the inner duct 2 and a rear end part 32 of the outer duct 3...  

Matches 801 - 850 out of 4,972