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WO/2019/173873A1 |
The present invention relates to a cavitation free rotary mechanical device with improved output and, in particular, to a rotary mechanical device (such as a hydro turbine, marine propeller, etc) including a rotatable shaft and associate...
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WO/2019/173825A1 |
A subsurface diver transport vehicle includes a vehicle body and at least one propulsion device. The vehicle body incorporates a number of individual mission modules mechanically assembled together to define a substantially continuous hu...
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WO/2019/146712A1 |
A propeller 1 for a ship is provided with: a boss 2 having grooves 21 formed in the outer peripheral surface 2s thereof; and blades 3 having bases 31 formed on the base end sides thereof, and is configured by inserting the bases 31 of th...
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WO/2019/099885A1 |
Underwater robotic systems are disclosed. In some instances, a robotic system may include a body, a flexible fin, and a rotatable mass associated with the body such that angular acceleration of the rotatable mass causes a reaction torque...
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WO/2018/080699A8 |
A propeller blade (18) spanning radially from a root (32) to a tip (34) and spanning axially from a leading edge (36) to a trailing edge (38) spaced from the leading edge forming an airfoil (39) therebetween where a sweep line (62) can b...
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WO/2019/090189A1 |
Embodiments of the present invention are directed to a modular, biomimetic, underwater vehicle capable of propulsion using one or more tail undulation methods, such as anguilliform or carangiform propulsion methods.
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WO/2019/088696A1 |
An apparatus for enhancing propulsion efficiency is disclosed. An apparatus for enhancing propulsion efficiency according to an embodiment of the present invention comprises: a duct disposed in front of a propeller and having an arc shap...
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WO/2019/083490A1 |
The claimed technical solution belongs to systems intended for setting a body in motion and can be applied in air and water carriers. The drive has a piston with the blades which are used to repulsion the body from environment. Among the...
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WO/2019/063120A1 |
The invention relates to a continuous-flow machine for energy transmission between a flowing fluid and a drive or output shaft on which a motor is arranged, which can also be used as a generator. In known systems for energy production, t...
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WO/2019/056598A1 |
Disclosed is a water recreation device capable of being driven by manpower, comprising a floating body part (1) suitable for a human body to lie prone, a paddling assembly (3) swingably connected to one end of the floating body part (1),...
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WO/2019/050570A1 |
A method and system for providing a watercraft device are disclosed. The watercraft device comprises a board, a throttle coupled to a top surface of the board, a hydrofoil coupled to a bottom surface of the board, and an electric propell...
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WO/2019/049902A1 |
Provided is a rotor blade that is configured so as to gather a fluid from both a blade root and a blade end of a blade toward the center along the length direction of the blade, allow a large quantity of the fluid to pass toward the trai...
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WO/2019/041562A1 |
Disclosed is a bionic robotic fish, comprising a head (11), a trunk (21) and a tail (31), wherein the head (11), the trunk (21) and the tail (31) are integrally connected by means of a central shaft (90) penetrating through the head (11)...
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WO/2019/040116A1 |
A watercraft having a propulsion mechanism extending through an opening in the bottom of the watercraft having a propulsion mechanism adapted to be inserted in an opening in the bottom of a watercraft comprising a pair of pedals each cou...
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WO/2019/033080A1 |
An intentional fluid manipulation apparatus assembly with a first thrust apparatus that imparts a first induced velocity to a local free stream flow during a nominal operation requirement. The first thrust apparatus creates a streamtube....
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WO/2019/025667A1 |
Nautical sports board using the muscular force of legs and arms. More particularly, it is a nautical device (1) allowing a user equipped with a paddle to move on water, comprising: a) two parallel floats (2, 3) separated by a space (7), ...
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WO/2019/027126A1 |
A duct-type ship energy reducing device according to an embodiment of the present invention comprises: a duct disposed to surround a part of the rear protruding part of a ship; and a support part for connecting the rear protruding part t...
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WO/2019/019011A1 |
A steering oar structure of a dredger, comprising a gearbox (1) connected to a dredger body, and a hub (2) rotatably provided on the gearbox (1). At least one first cutter (3) is provided at one end of the gearbox (1) and approximate to ...
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WO/2019/014873A1 |
Disclosed is a propeller for a dredger, the propeller comprising a gearbox (1) connected to a hull, and a propeller hub (2) rotationally arranged on the gearbox (1), wherein the outer circumference of the propeller hub (2) is provided wi...
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WO/2019/016171A1 |
The invention relates to a propeller for a water vehicle, comprising a hub (12, 112, 212, 312) and at least two blades, said blades extending outwards from the hub (12, 112, 212, 312) in the radial direction, and the propeller having a u...
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WO/2019/010651A1 |
An anti-winding propeller for a dredger, comprising a gear box (1) connected to a dredger body and a hub (2) rotatably arranged on the gear box (1). At least one first cutter (3) is arranged at one end of the gear box (1) and near the ed...
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WO/2019/013836A1 |
An apparatus for adjusting a human propelled watercraft having a pair of flexible fins extending into the water. The invention allows the user to easily adjust the propulsion device to match the user's leg length. The invention consists ...
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WO/2019/012168A1 |
The invention relates to a system for propelling ships by means of tubes having respective helical mechanisms inside, of different gauges, which propel the water through said tubes in a turbulance-free manner and at great speed, and char...
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WO/2019/009747A1 |
The invention relates to hydroelectric engineering, particularly to wave power units, and can be used for supplying power to populated areas and to businesses, and can also be used in shipbuilding as a power unit for floating devices. A ...
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WO/2019/004807A1 |
The invention relates to designs of rotating-blade cycloidal propulsive elements. A dual-rotation rotor for a cycloidal propeller comprises a primary rotor which rotates about its own axis and is kinematically connected to a drive shaft....
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WO/2018/223556A1 |
A marine reaction fin having reduced vibration, comprising a tail column (1) and a fin hub (2). The fin hub (2) sleeves on the tail column (1). The fin hub (2) is provided with a blade. The fin hub (2) is integrally formed with the blade...
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WO/2018/217675A2 |
An integrated jack plate and kick up bracket 100 is provided that is useful and safe even at relatively high boat speeds (e.g., in excess of 10 miles per hour). The bracket 100 uses a jack plate 106, 104 to raise and lower an outboard mo...
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WO/2018/216931A1 |
According to one embodiment of the present invention, a ship comprises: a hull; a propeller provided at the rear of the hull; and vortex generating fins respectively arranged at optimal points (Po) of the port and the starboard of the hu...
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WO/2018/206978A1 |
A propeller, impeller or mixer comprising at least one blade, the blade having a suction surface and a pressure surface which extend from a leading edge to a trailing edge of the blade and a radially-outer tip region, wherein five to one...
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WO/2018/195539A1 |
A cooling tower fan hub having a ring and a disc in which in which hollows and recesses are opened in the ring and/or in the disc in order to decrease fan natural frequencies and avoid excitation by the several kind of loads that affect ...
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WO/2018/191790A1 |
This disclosure relates to a system for reducing cavitation at a surface that moves relatively with respect to a first fluid. The system comprises a degasser configured to at least partially degas a second fluid. The system also comprise...
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WO/2018/179075A1 |
This propeller fan has a boss that rotates about an axial center and a plurality of blades disposed on the outer peripheral part of the boss. The blades have notches in the trailing edges thereof. The notches have three or more notched p...
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WO/2018/152623A1 |
An amphibious multi-terrain water planing vehicle including: a. a hull having a top, a bottom, a front end, a rear end, a first side and a second side; b. at least one track frame, in exemplary embodiments a pair of track frames, mounted...
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WO/2018/138477A1 |
A passively controlled fluid foil has a span; and a rigid spar extending in the spanwise direction,a cellular material and a flexible outer surface defining a profile of the outer surface of the foil and encapsulating the cellular materi...
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WO/2018/140548A1 |
A hydrofoil shield for protecting a boat motor includes a shield body, two fins, a nose section, and a tail section, wherein the shield body has a central shield portion with fins extending therefrom and the nose section disposed forward...
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WO/2018/134322A1 |
The invention relates to an underwater scooter (10, 10') for towing swimmers or divers, said scooter comprising a housing (11, 11') which accommodates at least one drive having a drive shaft (17) which protrudes from one end of the housi...
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WO/2018/130295A1 |
The present invention relates to a method of actuating a shape changeable member of actuatable material. The invention further relates to a shape changeable member and to a system comprising such a shape changeable member and a magnetic ...
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WO/2018/130410A1 |
The present invention relates to a method of actuating a shape changeable member of actuatable material. The invention further relates to a shape changeable member and to a System comprising such a shape changeable member and a magnetic ...
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WO/2018/132523A1 |
A paddle for use in propelling a watercraft. The paddle may have a blade that is configured for rotary movement and/or to function as an auto-gyro. The blade may have first and second blade members configured as hydrofoils that rotate ab...
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WO/2018/127909A1 |
There is provided a universal safety guard for a propeller of a trolling motor having a propeller end and a rear end, having an adjustable motor holder including a pair of oppositely-facing omega-shaped sections, where each section is di...
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WO/2018/111059A1 |
The invention relates to the field of transport by air and water and to power engineering, in particular to designs of bladed propellers. A rotating-blade propeller comprises a plurality of blades which are independently connected to spi...
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WO/2018/104420A1 |
This invention relates to a device and method), of reducing the azimuthal torque acting on a pulling pod unit or azimuth thruster (1) having a rotary pod housing (4) with a substantially vertical slewing axis (3A), a pulling propeller (7...
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WO/2018/094778A1 |
An oar propeller, comprising: an oar blade (1), an oar shaft (2), a position adjustment assembly (3) and a rotation shaft (4); the oar blade (1) is provided with a through-hole along a length direction of the oar blade (1), the oar shaft...
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WO/2018/086663A1 |
A folding propeller (1) with an adjustable rake angle has a hub (10) and at least three propeller blades (11) which are pivotally mounted in the hub (10) about pivot axes (25a) extending radially outwards from a central area in the hub (...
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WO/2018/080699A1 |
A propeller blade (18) spanning radially from a root (32) to a tip (34) and spanning axially from a leading edge (36) to a trailing edge (38) spaced from the leading edge forming an airfoil (39) therebetween where a sweep line (62) can b...
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WO/2018/075214A1 |
An apparatus and system for a marine propeller assembly are provided. A forward retention member that may be used with the marine propeller assembly includes a planar base, a drive shaft engagement end opposite the planar base, and a con...
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WO/2018/075215A1 |
A marine propeller composite blade an axially extending composite blade root including a dovetail wound in a partial spiral or helix around a centerline. Dovetail tapering down in width between clockwise and counter-clockwise dovetail si...
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WO/2018/073493A1 |
According to an example aspect of the present invention, there is provided a marine propulsion system (1) comprising a first portion (4) and a second portion (5) of a set of movable foils, a movement mechanism (2) coupled to the first po...
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WO/2018/075166A1 |
An apparatus and system for a propeller assembly are provided. In one aspect, marine propeller assembly includes a plurality of circumferentially-spaced blades that each include a dovetail having a radially inner surface. The marine prop...
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WO/2018/075164A1 |
A blade member includes a leading edge, a trailing edge, and a blade body extending therebetween. The blade member also includes a dovetail, a transition region, and a transition relief. The dovetail includes a dovetail chord line extend...
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