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WO/1998/042564A1 |
A guard (10) for a marine propeller (14) utilizing a flange (18) found on the lower drive unit or power leg (12), thereof. The guard includes a cage (24) which at least partially encloses the propeller and a support member (36) for holdi...
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WO/1998/038085A1 |
A differential multipropeller system (100, 200, 300, 400, 600, 700) comprises a drive shaft (103, 203, 303, 403, 605, 702) as well as a first propeller (101, 601, 707) and a second propeller (102, 602, 708). The propellers are arranged c...
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WO/1998/032652A1 |
Propulsion device comprising a number of profiled propeller blades (6) being circumferentially distributed and being mounted between two discs (4) rotatably arranged around a horizontal shaft (7) in such a way that the axes of the blades...
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WO/1998/030440A1 |
A steering and/or propulsion device for a vessel, preferably for installation in the bow portion of the vessel, comprising a propeller nozzle assembly (1) adapted to be rotated 360� about its vertical axis (2). The propeller/nozzle ass...
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WO/1998/029300A1 |
A contra-rotating propeller unit has two sets of propellers (8, 39) driven in opposite directions, respectively by a single drive shaft (2). One set of propellers (8) is directly driven by the shaft (2) which passes through a carrier (12...
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WO/1998/022329A1 |
The subject of the invention is a device to utilise the flow of ambient substances (1) such as air, water, snow, slush, dust, mud, sand, in a mobile conveyance propelled by enclosed wheels or tracks (5), wherein said flow (1) is introduc...
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WO/1998/019907A1 |
Dual propeller propulsion system for water crafts having two propellers (3, 4) fitted in the same axis outside the ends of an underwater housing (2) configured as a gondola so as to facilitate flow, said housing being placed under the hu...
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WO/1998/013256A1 |
Improvement in water craft of single-hull type or multi-hull type and having a drive apparatus or a hub (7) carrying a ventilated propeller (6) of so called 'surface piercing' type, in which the drive or the hub (7) with the surface pier...
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WO/1998/013257A1 |
Novel apparatus for rendering a watercraft propulsion system universal. One embodiment of the invention comprises a rotary shaft (62); a propeller (66) detachably attached to one end of the rotary shaft (62), the other end of the rotary ...
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WO/1997/049604A1 |
A ship has two ship's screws (4, 6). One screw (4) is fixed to a first hollow screw shaft (3) and the second screw (6) is fixed to a second screw shaft (5) which runs concentrically inside the first screw shaft (3). To drive the screw sh...
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WO/1997/049605A1 |
A ship propulsion system has a pod-like housing (1) mounted on the bottom of the ship hull and a synchronous motor (7, 10) arranged in the housing (1). In order to improve propulsion efficiency at propulsion powers of about 10 MW, the ro...
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WO/1997/048597A1 |
A lift-generating device for a power boat includes a boundary (4) of semi-circular form in cross section mounted beneath the propeller (5) of the boat so that the propeller (5) produces a high-speed water flow over the upwardly facing su...
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WO/1997/046445A1 |
A marine propulsion and steering unit (10) comprises a pod (13) having front and rear ends, a driving machine (14), e.g. a drive motor, accommodated in the pod, a substantially horizontal propeller shaft (15) drivingly connected to the d...
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WO/1997/043173A1 |
A propulsive transmission system comprising contra-rotating propellers which are connected to a planet gear in the hub. The planet gear is driven by a horizontal or slightly angled shaft to the sun gear. The sun gear operates at a rotati...
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WO/1997/041029A1 |
The propeller tail is intended to be applied to yachts, fishing boats and the like, and is designed to be mounted either internally or externally with respect to the boat itself. The propeller tail structure is based on two truncated gro...
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WO/1997/038898A1 |
A vessel has propeller(s), in which the propeller is provided in a tunnel, that is formed at the bottom of the vessel. The rear end of the tunnel is lower at least 5cm than the no-loaded waterline of vessel, and higher than the front end...
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WO/1997/030892A1 |
The invention concerns a method of optimizing the efficiency of ships with bow and stern propellers and an arrangement for adjusting the speed of rotation of the bow propeller. Ferry boats in particular can have identical drives at the b...
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WO/1997/027102A1 |
The invention relates to a method and apparatus for installing a propeller assembly (1) in an opening (9) in the bottom (8) of a swimming vessel and for removing the propeller assembly (1) from the opening (9). The propeller assembly (1)...
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WO/1997/026181A1 |
According to the invention, an active rudder, which can be rotated through U 180� and is mounted at the stern of a watercraft (WF), preferably a sailing yacht, such that it can be moved into and out of an opening in the hull (100), tak...
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WO/1997/024254A1 |
A ship of a displacement type with a pointed bow and a transom stern, a longitudinal length of L, and defining a base plane and a design waterline plane, the ship comprising: approximately sinusoidal waterlines; a surface extending from ...
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WO/1997/020733A1 |
A transverse or longitudinal screw (1) combined with inlet and outlet means (2) inside an elongate shaft (3) in the hull (4) of a surface or underwater craft. The screw comprises a male part (6) extending transversely to axis ZZ' and hav...
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WO/1997/020730A1 |
There is described a tugboat (1) having three azimuthal propelling units (10, 20, 30), two (10, 20) of which are juxtaposed below the stem (7), symmetrically relative to the main plane of symmetry (2), while the third azimuthal propellin...
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WO/1997/011878A1 |
The invention relates to an integrated system for the propulsion and steering of a ship. The system consists of a variable pitch or fixed propeller (1), a torpedo-shaped body (2) having a substantially greater diameter than the propeller...
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WO/1997/003876A2 |
A transmission for a stern drive planing power boat having an engine (18) inboard of and adjacent to the stern (16) of the boat and connected through the stern of the boat by means of a universal coupling (32) to a steerable outboard dri...
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WO/1997/000197A1 |
The invention concerns a propeller driving mechanism (5) for marine vessels having propeller blades arranged to be set in various pitch-angle positions in order to alter the angle of attack of the propeller blades against the water. The ...
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WO/1996/040550A1 |
A shroud (10) for attachment to the propeller shaft mount (18) ofa surface piercing marine outdrive apparatus (12). The shroud (10) has a portion (46) at one side of the mount (18) for the propeller drive shaft (30) of the marine outdriv...
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WO/1996/037404A1 |
A vane arrangement (14) for a marine vessel, which vessel is provided with an engine (13) driving a propeller (10) via a drive shaft (15). The vane arrangement (14) is pivotally arranged behind the propeller (10) via a pivoting arrangeme...
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WO/1996/032318A1 |
The leading edge of a ring-like nozzle (3) provided forwardly of a propeller (2) of a ship (1) comprises an upper leading edge (41) and a lower leading edge (42), and the upper leading edge (41) is gradually closer to the propeller side ...
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WO/1996/016865A1 |
Angle gearing, especially a lower angle gearing between an intermediate shaft (2) and one or two propeller shafts (6, 7) in a marine outboard drive unit. According to the invention, a conical bevel gear (3) is pre-tensioned on the interm...
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WO/1996/015028A1 |
A watercraft drive has a double rudder propeller driven by a driving engine through a driving shaft (1), an angular gear (3, 4) and an output transmission shaft (5). A propeller (6, 7) is arranged at each end of the output shaft. A guidi...
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WO/1996/009954A1 |
A marine propulsion unit has two contra-rotating propellers (15, 16) driven by a single shaft (25) through gearing which includes a set of static planetary gears (40), an external gear (30), and an internal gear (44). The gearing is moun...
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WO/1996/007832A1 |
A hollow poriton is defined in the axis of an inner shaft (2) to form a center oil feed passage (3), and a plurality of oil feed ports (4) penetrating through an outer peripheral surface of the inner shaft (2) from this center oil feed p...
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WO/1996/000683A1 |
Propeller drive installation in a boat, comprising two propeller drive units (8, 9) which extend out through individual openings (4, 5) in the bottom (1) of a V-bottomed boat, so that the legs are inclined relative to each other. The leg...
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WO/1996/000682A1 |
Propeller drive installation in a boat, comprising two propeller drive units (8, 9) which extend out through individual openings (4, 5) in the bottom (1) of the boat. The leg of one drive unit can be set to turn the boat in one direction...
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WO/1995/024562A1 |
A rotor is provided wherein a rotor core (10) and a jacket (11) cooperate to provide a continuous variation of area for fluid transit. This continuous variation of area for fluid transit produces a continuous axial acceleration of fluid ...
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WO/1995/022485A2 |
A pushing unit with a pusher craft (1) and a lighter (2) pushed and controlled by the pusher craft is designed for use in shallow waters with the optimum cargo-carrying capacity in that the pusher craft (1) is propelled by a paddle-wheel...
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WO/1995/016605A1 |
The invention concerns a device in propeller driving mechanisms (5) of marine vessels of the kind in which the propeller blades (6) are arranged to be turned into various angular positions to alter the angle of attack of said propeller b...
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WO/1995/003211A1 |
The invention relates to a drive unit for a ship, comprising a gearbox (5) placed on a bedplate in the ship and two screw propellers (75, 76) rotating in opposite directions about a common axis. The screw propellers are driven by two con...
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WO/1995/002535A1 |
The proposed propeller unit comprises a propeller shaft mounted in such a way that its position in relation to the hull can be adjusted both when the vessel is at anchor and under way. Propeller blades mounted on the shaft are shaped in ...
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WO/1994/029170A1 |
The invention relates to a method and a device for continuous and automatic monitoring and alignment of a propeller shaft (A), mounted in a plurality of bearings, in a ship upon hull deformations during operation. The inventive method su...
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WO/1994/025342A1 |
A shroud (1) is of aerofoil section to reduce cavitation and drag, has convex side faces which meet to form two edges (5 and 6). The trailing edge (5) is of V-section, and the leading edge (6) may be of V-section or rounded. The root end...
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WO/1994/020362A1 |
A propulsion arrangement for a marine vessel is described which comprises a propulsion unit (4) having: (i) a non-rotating housing in the form of a nozzle (10) extending along a principal axis (50); (ii) a propeller (22; 40) mounted for ...
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WO/1994/014649A1 |
The invention relates to a propeller drive system for a vessel or the like for operating two contra-rotating propellers (1, 2) disposed on two coaxial shafts (3, 4) in succession. The power supplies of two electric motors (5, 6) rotating...
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WO/1994/013529A1 |
A strut mounted, counter rotation marine propeller propulsion system of the single engine is provided including a depending propeller shaft strut (20) from which aligned front and rear propeller shafts (46, 44) are supported including re...
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WO/1994/012387A1 |
Compression washer assembly with line cutter for mounting on a boat propeller shaft between a shoulder on the shaft and the end of a propeller hub. The compression washer assembly (10) comprises a hub portion (9) with a cross section con...
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WO/1994/012382A1 |
A stern drive system (10) includes a jet nozzle (14) that is pivoted with respect to a mounting bracket and is steered by two hydraulic cylinders (24, 34). An antirotation brace (60) includes a rod (64) pivotably mounted to the bracket (...
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WO/1994/008842A1 |
A submersible marine vehicle operable both upon and beneath water, includes a fluid-tight elongated hull (10) having a longitudinal axis (12) in a direction of travel and having integral lateral hand and arm gripping elements (14, 16), e...
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WO/1994/008845A1 |
A water jet propulsion unit intended for use in jet boats, the unit comprising an intake section (10), a pump section (12) and a nozzle section (16). In the pump section (12) there are two counter-rotating impellers (14, 15) on concentri...
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WO/1993/024361A1 |
Propulsion unit for marine vessels with a gear or bearing housing (6) in which a propeller shaft (7) with a surface-breaking propeller (8) is carried. In a horizontal plane the propeller shaft forms an angle (alpha) to a guide fin (9) so...
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WO/1993/017907A1 |
A propeller guard (10) including a cylindrically shaped ring (11) which includes a plurality of evenly spaced ports (36) therethrough. The ports (36) in the ring (11) are formed so as to allow water to pass therethrough during operation ...
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