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WO/1993/002913A1 |
This invention is a paddlewheel apparatus having epicyclic gear trains (22, 28, 29, 30, 31, 32, 33) in rotatable holders (H) at opposite ends of a plurality of paddles (A, B, C). The paddles (A, B, C) are maintained substantially vertica...
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WO/1993/001973A1 |
A folding propeller (1) for a ship comprises a hub (3) for mounting on the drive shaft (9) of the ship and at least two propeller blades (2) which are so journalled in the hub (3) as to be pivotable between a first, completely or partly ...
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WO/1993/001972A1 |
A folding propeller (23) for a ship comprises a hub (13) for mounting on the drive shaft of the ship and at least three propeller blades (11) which are so journalled in the hub (13) as to be pivotable between a first, completely or partl...
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WO/1992/022459A1 |
a low-aspect ratio propeller system is provided with a multiple ring structure (42) formed with a plurality of circular or non-circular, annular, narrow equivalent air foil rings (56.1, 56.2, 56.3, 56.4) which are held by rails (40) in a...
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WO/1992/010402A1 |
A propeller having a hub (11) and a plurality of blades (13) fixed to the hub (11) and extending outwardly to terminate in an annular ring (14). Portion (21) of the ring (14) on the trailing side (19) of the blades (13) is relieved so as...
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WO/1992/009474A1 |
A device, such as a boat hull and propulsion system, for effecting relative movement of a flowable substance, such as water. A channel having open upstream and downstream ends at least partially defines a flow path. The channel includes ...
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WO/1992/007189A1 |
Device for all generators and power units operating in a fluid flow. The swivel pins, at (A), of the blades (P) are parallel to the shaft (1) of the rotor (9), on whose periphery they are mounted. Each of them is integral with a toothed ...
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WO/1992/006000A1 |
A drive unit (23) for a watercraft (20) comprising a surface propeller (25) for partially submerged operation and means for affixing said unit (23) to the transom (56) of the craft (20) wherein the propeller (25) is located aft of the tr...
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WO/1992/002409A1 |
This invention relates to a means for propelling a boat manually and provides a fin-propelled boat as a vehicle for pastime on the water equipped with a propelling device, wherein drawbacks of the conventional boat using oars or scull or...
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WO/1992/001601A1 |
Ships with conventional screw propellers have limited maneuverability and must put up with a possible thrust reduction due to the turbulence caused in the water by the rotation of the screw. The body of the ship is steered by a more or l...
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WO/1991/013772A1 |
A vehicle propelling assembly to propel a vehicle in a given direction comprises a pair of propelling members (19a, 19b) each having a body portion (20a, 20b) which rotates about a rotation axis extending substantially at right angles to...
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WO/1991/008139A1 |
A propulsion device for a floating structure, especially a watercraft (5), comprises an essentially horizontally disposed wing (1) which is rotatably connected to the craft and is arranged to carry out a tilting movement and provide for ...
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WO/1991/008300A1 |
The invention relates to a process for preparation of the vancomycin antibiotic in a microbiological way by aerobic fermentation, by using a strain belonging to the Micropolyspora species in a culture-medium containing assimilable carbon...
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WO/1991/007313A1 |
Ship's propeller provided with propeller blades (1) with end plates (3, 4) at the end remote from the propeller hub and on both sides of the blade (1), whereby on the spot of the attachment to the blade (1) the end plates (3, 4) have a c...
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WO/1991/006468A1 |
A two-bladed folding propeller with synchronous folding and unfolding of the baldes is only suited for use at high speeds of rotation. In order to be able to utilize the advantages of the folding propeller with a three-bladed propeller, ...
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WO/1990/011928A1 |
The main rotor (1) assembled at bow (3) of hull (4), crosswise to sheer plan, consists of two or more units of cylindrical wheels (5) provided with blades (17). Each unit of cylindrical wheels (5) is provided with its own independent bra...
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WO/1990/012157A1 |
The invention relates to an oil collecting unit for collecting oil from the water surface, comprising rotating oil-collecting brush discs (5), and a comb member (8) separating oil from the brush discs, the brush discs being arranged to p...
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WO/1990/009310A1 |
Aquatic ski for human propulsion generated by the deambulatory (walking) action, characterized by the fact to include: for one foot, user floating means hull (1); propulsive oscillating means associated to the respective hull, comprising...
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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...
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WO/1990/004102A1 |
A rotor which is driven by wind power has a vertical rotation axis (2) and rotor arms (7, 8, 9), mounted radially on said axis and distributed over its periphery at regular angular distances, which carry bodies with an aerodynamic profil...
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WO/1989/010298A1 |
The invention relates to a driving device for the propulsion of waterborne craft, said driving device having a propulsion unit which comprises at least one endless flexible belt or chain element (8) having driving projections and arrange...
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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...
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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...
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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...
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WO/1989/003340A1 |
A marine propeller (4) combines decreasing overall pitch from hub (6) to blade tip (20) and increasing progressiveness of pitch with increasing radii from hub to tip, and provides uniform loading from hub to tip. The blade has a maximum ...
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WO/1988/010207A1 |
A propeller has a rotating propeller disc (14) having a plurality of downwardly-extending pivoted blades (24) thereon. Each of these blades has a laterally-extending actuating arm (34) carrying a roller (36) and at a certain point in the...
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WO/1988/003498A1 |
Marine propulsion apparatus (10) in which a partially-submerged belt (15) passing over pulleys (12, 13 and 14) and supporting transverse fins (20) is driven by external drive means to force the propulsion apparatus (10) through the water...
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WO/1988/000297A1 |
A fluid powered motor-generator apparatus includes a generator (19) having a power output (21) and a mechanically driven input (20). A generally streamlined motor body (11) is rotatably mounted to drive the generator input (20) and inclu...
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WO/1987/004400A1 |
A propeller produced from reinforced plastic material having a plurality of reinforcement sections (4, 6), arranged so that the direction of the reinforcement, and/or the structure, and/or the material in a section (4) differs from the c...
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WO/1987/003263A1 |
A propeller for a high-speed sea-vessel comprises a hub (1) mounted on an inclined propeller shaft and blades (2) fixed to it, each of the blades being diverted, along its whole length, in the direction opposite to that of rotation of th...
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WO/1987/000140A1 |
Folding propeller which consists of blades (1) hinged to a hub (7) in such a way that they can turn about 56 degrees from a position at rest, where they are pointing aft, to a working position towards a stop. The identical movements of t...
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WO/1986/004648A1 |
The device comprises a double paddle body (14) which may rotate about two shafts (8, 9) which are perpendicular to each other and are also perpendicular to the longitudinal axis (21) of the body, said longitudinal axis being itself unfix...
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WO/1986/002331A1 |
A propellor (10) for watercraft has a hub (11) with a pair of blades (12) with a leading portion (13) central portion (14) and trailing portion (15). The leading portion (13) of the blades are forwardly inclined relative to the hub (11) ...
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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...
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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 ...
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WO/1985/002594A1 |
A ring propeller which consists of a boss (4) with a central axis, a frusto-conical shroud (6) is disposed co-axially about the boss (4) and has a plurality of blades (2) extending between the boss (4) and the shroud (6) thereby dividing...
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WO/1985/002382A1 |
Vibrations induced by a propeller (11) rotating in a medium to drive a body (10) supporting the propeller through the medium can be reduced by generating a timing signal (19) synchronised with the rotation of the propeller and using this...
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WO/1982/000495A1 |
This blading forms the hydraulic wheel (14) of one-hull boats or boats with two or a plurality of catamarans (15-16) which form venturi and are rigidly supported by a horizontal upper structure (17) forming a frame, also supporting indep...
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WO/1980/002270A1 |
The propulsor device comprises blades (9) arranged at the end of blade carriers (8), said blades being driven approximately in a motion of translation within a vertical plane by means of a mechanism for the transmission of the circular m...
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JP2024067859A |
The present invention provides a screw propeller that can effectively reduce the influence of hub vortices generated in the wake of the screw propeller. [Solution] A screw propeller comprising a propeller hub and at least one propeller b...
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JP7482346B2 |
A cycloidal dynamic propulsion or positioning system for a ship in water that exhibits a direction of flow, including a frame, a rotor mounted to be movable in rotation on the frame about a main axis at right angles to the flow, includin...
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JP2024516315A |
Provided is a propeller for driving a watercraft having propeller blades (2, 6, 9, 15) and a metal hub (1, 7, 8, 14, 31) connected to the shaft of a ship, and a manufacturing method thereof. . The propeller blades are made from polyamide...
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JP2024047389A |
[Problem] To provide an excellent ship propulsion device that utilizes waves, based on new ideas and principles, that can easily realize a self-propelled ship that can travel by converting the vertical motion of waves into jet propulsion...
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JP7446370B2 |
Provided is a vehicle wheel with which it is possible to obtain a large propulsive force. The vehicle wheel comprises: a wheel portion to be mounted to a hub provided at the end of a drive axle for a drive wheel of the vehicle body; a wh...
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JP2024022687A |
[Issue] In order to prevent the extremely low water pressure region that forms on the trailing surface of the rotor blade during high-speed rotation of the propeller from dropping below the saturated vapor pressure, the water pressure is...
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JP2024014651A |
An object of the present invention is to provide an accelerating screw for boats. An accelerating screw for a boat includes a propeller shaft, a plurality of first blades, and a plurality of second blades. The plurality of first blades a...
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JP2024007783A |
An object of the present invention is to provide a ship propulsion device that can exert strong propulsive force without using a screw that causes cavitation. [Solution] A rod-shaped rod extending from above to below, at least the lower ...
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JP7413013B2 |
This motor integrated type fluid machine for taking in a fluid from an inlet port and blowing out the taken-in fluid from a blowout port, is provided with: a shaft part that is provided at the center of a rotary axis; a rotation part tha...
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JP7375328B2 |
To provide a propeller for a boat propulsion apparatus, which propeller is excellent in maintainability including easy assembly and easy disassembly and reliably reduces the impact force caused by colliding with an obstacle and transmitt...
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JP7365688B2 |
To provide a propeller for vessel with rigidity of a blade increasing along with rise in rotational speed, in other words, to provide the propeller for vessel capable of suppressing an occurrence of cavitation in a low rotational range a...
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