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WO/2017/070413A1 |
A marine propulsion assembly (500) includes a propeller (502) having a threaded hub (505) whose threads are used for engaging with a drive shaft (501). The drive shaft includes both a first set of threads (507) and second set of threads ...
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WO/2017/048683A1 |
A blade includes a blade body having a surface and a hole extending through the surface of the blade body. The hole defines a hole axis and a plane perpendicular to the hole axis. The hole has an elongated hole perimeter within the plane...
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WO/2017/041773A1 |
The invention relates to a system, which whole system is based on alternately switched induction and the motion of coils that is triggered by said induction. For this purpose, the individual coil is brought into a permanent magnetic fiel...
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WO/2017/032721A1 |
A device for linear propulsion (1) comprises a support structure (2) for carrying a payload, and one or more wave propulsion modules (3). The or each wave propulsion module (3) comprises a first individually- pivoted substantially planar...
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WO/2017/021844A1 |
Machine (1) for transmitting energy to, or receiving energy from, fluids in general, has a containing structure (2) that receives an impeller (3) onto which a plurality of blades (4) is rotatably mounted that are suitable for transmittin...
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WO/2017/014953A1 |
A human propelled watercraft having a pair of flexible fins supported by a mast extending into the water each adapted to oscillate through an arcuate path in a generally transverse direction with respect to the central longitudinal dimen...
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WO/2017/015147A1 |
The apparatuses, methods and systems for harnessing fluid flow with flexible mechanical transducers include mechanisms that include flexible elements with strained deformations. In some implementations, oscillations of strained deformati...
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WO/2016/201556A1 |
This invention relates to propulsion systems. The Centrifugal Propeller is a dosed propulsion system with no external moving parts, other than a drive shaft, and has no external vents. The Centrifugal Propeller creates thrust by redirect...
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WO/2016/190822A1 |
The present invention relates to an airfoil-shaped medium so as to generate an aerodynamic force. The present invention more particularly relates to an airfoil of a wing, a propulsion system blade attachment or sailboat keel. For instanc...
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WO/2016/190784A1 |
The present device relates to boatbuilding, and more particularly to screw propellers with safety couplings, intended for use in outboard motors and/or marine screw propellers. A screw propeller with a safety coupling comprises a screw p...
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WO/2016/180998A1 |
The invention relates to a shark-simulating hydrodynamic diving suit with mechanical self-propulsion, comprising a neoprene suit, to which a carbon fibre structure is attached, consisting of a head and a back, joined by means of a retain...
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WO/2016/175340A1 |
The present invention provides an energy-saving duct for attaching to the stern of a ship, the circular duct being attached in front of a stern propeller of radius R, wherein the duct has a radius of 0.7R at the back end and an angle of ...
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WO/2016/151318A1 |
A user propelled water board apparatus (2) is described and comprises a hull, porti.oxi (4) defining a longitudinal axis x-x. The hull portion (4) is buoyant, to enable a user (6) to rest on hull portion (4) and be supported on the surfa...
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WO/2016/147940A1 |
The purpose of the present invention is to provide a horizontal shaft rotor that is for use in a propulsion machine, that makes it possible to change the position of a blade of the horizontal shaft rotor such that the pitch angle thereof...
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WO/2016/144160A1 |
The invention relates to an apparatus for exchanging kinetic energy between a fluid and a structure moveable relative to the fluid and connected to the apparatus, comprising a channel enclosed by a channel wall connected with the structu...
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WO/2016/141394A1 |
The invention relates to a drive device for a surfboard, comprising movable elements for increasing the propulsion resulting from said drive device. Said elements are set in motion by the user of the surfboard. The user can thus travel t...
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WO/2016/140398A1 |
The present invention relates to an asymmetric wake generating vortex generator for reducing propeller noise and vibration, configured such that, by controlling a flow that is introduced into a propeller installed on a ship so as to redu...
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WO/2016/099325A9 |
Proposed are original airfoils that significantly enhance the aerodynamic qualities of screw propellers. The advantage of air and water vehicle propellers manufactured on the basis of the proposed airfoils with a sharp leading edge is th...
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WO/2016/133382A1 |
The invention relates to a tugboat (1), comprising a single hull (2), a deck (3) and a towing system (4) having a base (5) connected to the deck, the base having a centre point (CP), and a cart (6) that is moveable over the base over 360...
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WO/2016/131877A1 |
A hub (3) of a rotor (9) for a fluid flow machine is provided with helical grooves (5) for attaching replaceable blades (15) to the hub. The grooves have sidewalls with rounded portions (35) adjacent to the bottom (33). The grooves can b...
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WO/2016/120145A1 |
The present invention generally relates to a turbine unit for a hydraulic installation, and more in particular it deals with the hub of the turbine unit. The present invention proposes to provide means for adjusting a gap extent formed b...
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WO/2016/123639A2 |
A sailing vvatercraft includes a hull, a mast extending from the hull, a starboard outrigger extending from the hull, a port outrigger extending from the hull first and second hull foils extending from the hull and spaced from each other...
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WO/2016/112347A2 |
A watercraft includes a sterndrive comprising an inboard engine and an outdrive that extends through the transom. The aft end of the hull includes a stepped tunnel, which allows the sterndrive propellers (or other drives) to be operated ...
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WO/2016/105569A1 |
A water bike has a frame supported on first and second spaced apart pontoons or similar floatation elements. Pedals are attached to cranks on a front sprocket rotatably supported on the frame. A chain or belt extends around the front spr...
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WO/2016/101954A1 |
The present invention concerns a propelling unit for propelling a vessel through water, said propelling unit comprising: a rotor comprising a plurality, preferably two or more, foldable hydrodynamic blades, said rotor being mounted on a ...
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WO/2016/092206A1 |
The invention relates to an energy-generating and/or propulsion device (1) comprising: a rotary propeller; an annular support (10); and blades (20) comprising a first end forming a base and a second end forming a vertex, the blades being...
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WO/2016/087689A1 |
The invention relates to a vessel with minimised friction, designed on the basis of a standard hull with a flat bottom, comprising floating traction wheels on each side, which are symmetrically distributed between the port and starboard,...
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WO/2016/080842A1 |
A hull (1) for a vessel (10) is described, the hull including an elongated body (3) rotatably connected to the vessel (10) and including a first end portion (31) and a second end portion (33), the longitudinal axis (Al) of the elongated ...
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WO/2016/076488A1 |
The present invention relates to a ship flow control device having a combination of an asymmetric duct and fin structures, the device being installed in front of a propeller with a radius R and comprising a duct, a first fin structure, a...
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WO/2016/076489A1 |
The present invention provides an asymmetric fan-shaped stern duct for energy saving of a ship, comprising: a duct installed in a fan shape above the center line of a propeller shaft so as to be asymmetric in the starboard direction with...
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WO/2016/069709A1 |
A propeller (10) has a plurality of blades (12, 14, 16) extending radially outwardly of a hub (18) and a plurality of cups (32, 36, 40) respectively affixed to the plurality of blades. Each of the plurality of blades has a facing surface...
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WO/2016/067251A1 |
A rotating machine with a fluid rotor comprises a set of blades (4) mounted on arms (2) rotating about a main axis (1) of the rotor, the rotor being held by a support structure (5) in an orientation such that said axis (1) is essentially...
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WO/2016/064091A1 |
A propelling efficiency enhancing device is disclosed. A propelling efficiency enhancing device according to an embodiment of the present invention is disposed in front of a propeller and includes current fixing blades disposed radially ...
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WO/2016/046318A1 |
The invention relates to a pod propulsion system (1) for a floating device, having a housing (2) and at least one tractor propeller (3), and to a floating device comprising such a pod propulsion system (1). In order to provide a pod prop...
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WO/2016/045405A1 |
An imitation tail fin propeller, comprising a left gear transmission portion (1), a right gear transmission portion (2), a middle planetary gear train portion (3), a main input shaft (4), a bearing (5), a connecting rod (6), a tail fin c...
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WO/2016/032331A1 |
The invention relates to an apparatus for exchanging kinetic energy between a fluid and a structure connected to the apparatus, wherein the fluid moves relatively to the structure, the apparatus comprising a symmetrical channel, enclosed...
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WO/2016/019466A1 |
A fluid-redirecting structure includes a rigid body having an upstream end, a downstream end, and an axis of rotation, the rigid body incorporating a plurality of troughs each spiralled from a tip at the upstream end to the downstream en...
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WO/2016/012656A1 |
The present invention concerns an oscillating foil propulsion system comprising at least one movable foil, at least one pitch mechanism connected to the at least one movable foil and configured to control a pitch motion of the at least o...
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WO/2016/004800A1 |
A bionic pectoral fin propelling device based on a planetary gear train, comprising a frame, a power source (1), a propelling part (2), left and right maneuvering parts (3), a fixed support plate (4), a movable support plate (5), a left ...
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WO/2015/196276A1 |
A Pulsed Locomotor (120), for propelling media, fluids and crafts, in fluids and on land, comprising a blade (124) securely connected to a drive shaft (122). Upon reciprocation, the ambient medium is forced towards the trailing edge of t...
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WO/2015/188186A1 |
Embodiments of the present invention include systems and methods for the underwater or dry dock repair of damaged articles, including structural steel members and associated appendages, as well as propellers of vessels. The disclosed emb...
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WO/2015/182931A1 |
The present invention relates to a structure of a propeller cap. In order to solve the problem of a conventional propeller boss cap fin (PBCF) which requires precision processing and thus is difficult to manufacture and has high manufact...
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WO/2015/172788A1 |
Rotating Steering System for regulating the course of a ship. A rotating steering system as shown in Fig. 1 comprises a set of rotating symmetrically wing shaped blades (1) with adjustable synchronised pitch, mounted in a wheel containin...
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WO/2015/154131A1 |
A propeller formed along the lines of a vortex, i.e. a Fibonacci spiral projected onto a surface formed by a square hyperbola. Fluid flows evenly along the length of the propeller with less turbulence allowing it to operate at a higher p...
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WO/2015/142472A1 |
A drive for a marine vessel may include a fully wetted propeller with a fixed drive shaft configuring the propeller in a tractor mode wherein the propeller pulls the water rearwardly relative to a bow of the marine vessel when traveling ...
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WO/2015/136415A1 |
An adaptive profile blade for an axial flow rotor, wherein the leading base at the rotor nose has a cylindrical-hemispherical shape, and the longitudinal profile of the blade is a semi-arched catenary and extends, on the intrados side, a...
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WO/2015/137746A1 |
The present invention provides a centrifugal propulsion apparatus capable of forward and backward movement, and a ship having the same, the apparatus comprising: two impellers which are rotated by a power shaft, face each other, and are ...
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WO/2015/119589A1 |
The invention relates to shipbuilding. A fin propulsor contains a housing, a fin in the form of a wing, a drive, a propulsor control mechanism, at least two identical vertical fins, and a turning device. The housing is in the form of a v...
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WO/2015/114487A2 |
An aquatic apparatus includes a fin connected to a bottom of the an aquatic device; a flap connected to the fin, where the flap is connected at a leading end of the flap to the fin by one or more connectors, where the connectors enable t...
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WO/2015/114079A1 |
The invention relates to a tugboat for assisting cargo vessels, comprising the following features: - at least one propelling unit; - a tow line for establishing a pulling connection between the cargo vessel and the tugboat. The invention...
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