US20220106023A1 - Watercraft - Google Patents

Watercraft Download PDF

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Publication number
US20220106023A1
US20220106023A1 US17/422,340 US201917422340A US2022106023A1 US 20220106023 A1 US20220106023 A1 US 20220106023A1 US 201917422340 A US201917422340 A US 201917422340A US 2022106023 A1 US2022106023 A1 US 2022106023A1
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United States
Prior art keywords
watercraft
water
motors
hull
flow channels
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US17/422,340
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English (en)
Inventor
Hans-Peter Walpurgis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cayago Tec GmbH
Original Assignee
Cayago Tec GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cayago Tec GmbH filed Critical Cayago Tec GmbH
Assigned to CAYAGO TEC GMBH reassignment CAYAGO TEC GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Walpurgis, Hans-Peter
Publication of US20220106023A1 publication Critical patent/US20220106023A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B34/00—Vessels specially adapted for water sports or leisure; Body-supporting devices specially adapted for water sports or leisure
    • B63B34/10—Power-driven personal watercraft, e.g. water scooters; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B32/00—Water sports boards; Accessories therefor
    • B63B32/10—Motor-propelled water sports boards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
    • B63B35/08—Ice-breakers or other vessels or floating structures for operation in ice-infested waters; Ice-breakers, or other vessels or floating structures having equipment specially adapted therefor
    • B63B35/12—Ice-breakers or other vessels or floating structures for operation in ice-infested waters; Ice-breakers, or other vessels or floating structures having equipment specially adapted therefor having ice-cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/46—Divers' sleds or like craft, i.e. craft on which man in diving-suit rides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
    • B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/12—Use of propulsion power plant or units on vessels the vessels being motor-driven
    • B63H21/17—Use of propulsion power plant or units on vessels the vessels being motor-driven by electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H2011/008—Arrangements of two or more jet units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H11/00—Marine propulsion by water jets
    • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
    • B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
    • B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
    • B63H2011/081—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type with axial flow, i.e. the axis of rotation being parallel to the flow direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/21—Control means for engine or transmission, specially adapted for use on marine vessels
    • B63H2021/216—Control means for engine or transmission, specially adapted for use on marine vessels using electric control means

Definitions

  • the invention relates to a watercraft, in particular a swimming and/or diving aid with a hull having a stern and a bow, wherein two flow channels are provided in the hull or on the hull, which flow channels extend from a water inlet to a water outlet, wherein a water acceleration device, in particular a propeller or propelling screw, is arranged in each of the two flow channels, wherein each water acceleration device is driven by a motor, wherein handles a user can hold on to are arranged in the midship area between the bow and the stern or in the bow area, wherein a support surface is provided adjoining the handles in the direction of the stern, on which support surface the user can at least partially rest, and wherein two spaced-apart bulges extending in the longitudinal direction of the hull are provided on the underside of the hull, between which bulges at least one water-sliding surface is arranged,
  • Such watercraft are used as recreational or sports equipment, as rescue equipment and for professional use. They can be used to pull a user across the water's surface. At the same time, the watercraft can also be transitioned from surface travel to submerged travel. In particular, the watercraft can then be used for longer diving trips.
  • US 2001/0025594 A1 discloses a watercraft, in which a hull having laterally projecting wings is provided.
  • the hull has a support surface on which the user's upper body can rest. Similar to a motorcycle, the watercraft has a handlebar.
  • the handlebar has two handles. The user can hold on to these.
  • Two flow channels are further provided in the hull, wherein impellers are provided inside the flow channels.
  • the impellers are arranged on a shaft and can be driven by an electric motor.
  • the watercraft has protrusions on its underside that are spaced apart.
  • This well-known watercraft has a relatively large footprint, making it unwieldy. In particular, it cannot be used for water travel where turns along tight curve radii are to be made. In addition, the clear height of the watercraft is great, i.e., it has a relatively high flow resistance.
  • Such a watercraft is known from DE 35 23 758 A1, for instance. Similar to a biplane, this watercraft has two wings that are spaced apart. Flow channels are formed between these two wings. Motors are arranged in the flow channels, driving one propeller each. Furthermore, handles are provided between the wings. These handles can be used to individually control the motors.
  • the invention addresses the problem of providing a watercraft of the type mentioned at the beginning, which has a compact structure in aid of a relatively low flow resistance and which is easy to handle in aid of a speedy driving style.
  • the flow channels are integrated into the area of the bulges in a space-saving manner, considerably reducing the overall height of the watercraft compared to known watercraft. This reduces flow resistance. This results in the watercraft having a significantly lower energy consumption and makes for a speedy driving style.
  • the integration of the flow channels into the bulges results in an improved balance of the watercraft during a dive. When driving on water, an improved water supply to the flow channel is achieved even in rippled waters and the risk of air being drawn into the flow channels is significantly reduced when driving in this manner.
  • each of the two flow channels has its own water inlet, which are each introduced into the bulges.
  • operation is enhanced in that if one of the two flow channels unintentionally aspirates air, the other flow channel does not. The other flow channel can then continue to provide driving power at the desired thrust.
  • the water inlets are open towards the underside and/or towards the area located between the bulges. If the water inlets are oriented to open towards the underside, an ideal water supply of the flow channels is safeguarded. When the water inlets are oriented to open into the area between the bulges, this improves the driving style because the water is actively drawn over the sliding surface between the bulges into the area between the bulges. If the water inlets are aligned in both directions, i.e. towards the underside and in the area between the bulges, these effects combine and there is no risk of cavitational effects.
  • a considerable optimization of efficiency can be achieved by arranging a flow stator in each of the flow channels downstream of the water acceleration devices, which flow stator is designed to reduce or eliminate the swirl of the water downstream of the water acceleration device, preferably to straighten the water jet.
  • the water drawn through the flow channels by means of the water acceleration device, for instance the propeller, is twisted at the water acceleration device. This twist results in a decrease in thrust.
  • the flow stator is used to reduce or eliminate this swirl, the thrust of the water jet and thus the overall performance of the watercraft are significantly increased.
  • the motors associated with the two water acceleration devices are located outside of the flow channels in the hull, then the free cross-sectional area of the flow channels remains unaffected by the motor to achieve maximum water flow.
  • the engines are located on both sides of the central longitudinal axis of the watercraft. As a result, the weight of the engines contributes to the stabilization of the watercraft during water travel.
  • a preferred option of the invention provides that the engines are housed in a joint flooding compartment or in separate flooding compartments, wherein the flooding compartments can be flooded with ambient water. In this way, the engines can be efficiently cooled by means of the ambient water during operation. Ambient water is available for cooling purposes in virtually unlimited quantities.
  • the flooding compartment or compartments are connected to the environment via at least one water inlet port and one water outlet port, that the water inlet port and the water outlet port are arranged offset from each other in the longitudinal direction of the hull extending from the bow to the stern, to generate a water flow in the flooding compartment or compartments during the operation of the watercraft.
  • vents are assigned to the flooding compartment(s).
  • the vent or vents are located in the area of the flooding compartments, which are located at the top, facing away from the bottom hull, to permit venting to the greatest possible extent.
  • the flooding compartments can also be used to reduce the buoyancy of the watercraft when it is placed on the water. This results in a reduction in the structural weight of the watercraft, rendering it easy to transport outside the water.
  • the bulges are part of lateral outriggers, and that preferably a motor and/or a flooding compartment is provided in the area of each outrigger.
  • the outriggers can be directly in contact with or spaced apart from the actual hull body. They can also be integrated into the hull body. If an engine and/or a flooding compartment is located in each outrigger, a stable center position of the watercraft can be achieved during operation.
  • each of the two motors can be controlled and/or regulated separately. In this way, improved handling can be achieved when cornering. For instance, when turning, the motor facing the outside radius of the curve can operate at a higher power than the motor facing the inside radius. This makes for fast turning.
  • control elements of a regulating device can be assigned to each handle, i.e. the control elements of one handle can be used to regulate the power output of the one motor and the control elements of the other handle can be used to regulate the power output of the other motor.
  • the control elements of one handle can be used to regulate the power output of the one motor
  • the control elements of the other handle can be used to regulate the power output of the other motor.
  • both engines are supplied by a joint power supply.
  • the power supply which can be designed as an accumulator, centrally amidships or in the bow area of the watercraft, to use the weight of the power supply to counterbalance the load the user applies to the supporting surface.
  • each motor is assigned its own power supply. In that case, redundancy us established. If a power supply fails during operation, the user can reach the shore at reduced speed using the power of the second accumulator. It is also conceivable that in that case there is a changeover switch which can be used to supply the remaining power supply to both motors.
  • two power supplies When two power supplies are used, they can preferably be arranged symmetrically with respect to the central longitudinal axis of the watercraft and on both sides of the central transverse plane of the watercraft passing through the central longitudinal axis, to achieved a good stability of the watercraft.
  • the two power supplies for the motors are each located in a flooding compartment or in a joint flooding compartment. In that way, the power supplies can be cooled during operation in the flooding compartments. This ensures a constant power output of the power supplies.
  • a regulating device can be used to individually or jointly reverse the direction of rotation of the motors and in that way the thrust direction of the water acceleration device can be reversed. Then, reversing or turning the watercraft can be accomplished in a confined space.
  • a watercraft can also be of the type having a hull with a stern and a bow, wherein two flow channels are provided in the hull or on the hull, which flow channels extend from a water inlet to a water outlet, wherein a water acceleration device, in particular a propeller or a propelling screw, is arranged in each of the two flow channels, wherein each water acceleration device is driven by a motor, wherein handles a user can hold on to are arranged amidships between the bow and the stern or in the bow area.
  • a water acceleration device in particular a propeller or a propelling screw
  • a watercraft In such a watercraft, provision can be made that it has a tilt sensor which qualitatively or quantitatively detects the tilt of the watercraft about its central longitudinal axis, that the tilt sensor is connected to a regulating device, and that the control device controls the two motors as a function of the signal from the tilt sensor when the watercraft is inclined in such a way that the motors have a power output differing from one another.
  • the tilt sensor When the user of such a watercraft wants to initiate a turn, he intuitively tilts the watercraft about its central longitudinal axis.
  • the tilt sensor detects this tilt.
  • the regulating device thereupon regulates the two motors with regard to their power output.
  • the motor facing the inside of the curve can be operated at a lower power than the motor on the outside. This makes for tight turns, resulting in a speedy driving style.
  • the tilt sensor qualitatively detects the degree of tilt, in particular the angle of tilt.
  • a functional relationship or a characteristic map is stored in a memory in the regulating device.
  • the regulating device takes the assigned control parameters for the two motors from the functional relationship or a characteristic map. This permits optimized turning at maximum driving performance.
  • FIG. 1 shows rear view of the stern section of a watercraft
  • FIG. 2 shows a bottom view of the watercraft of FIG. 1 and
  • FIG. 3 shows a side view and a sectional view of the watercraft of FIGS. 1 and 2 .
  • FIGS. 1 and 2 show a watercraft having a hull 10 , wherein the hull 10 has a bow 11 and a stern 12 .
  • a cockpit 30 is provided in the area of the bow 11 , which cockpit has a display 32 .
  • the display 32 can be used to display certain operating parameters of the watercraft. For example, the state of charge of power supplies 60 , diving depth, or speed may be indicated on this display 32 .
  • Handles 31 are provided on both sides of the cockpit 30 . The user can use these handles to hold on to the watercraft.
  • the handles 31 may have control elements 31 A, 31 B.
  • a support surface 40 adjoins the cockpit 30 in the direction of the stern 12 .
  • a user can partially rest on this support surface 40 , for example, supporting his arms and/or a part of his upper body.
  • the support surface 40 is provided amidships in the form of a trough-shaped recess, as shown in FIG. 1 .
  • no recess is provided, but rather an outwardly curved midship area or a flat midship area.
  • the midship area is adjoined by outriggers 20 on both sides of the center longitudinal axis of the watercraft.
  • the outriggers 20 have a rounded transition areas 42 . These rounded transition areas 42 are convexly curved outwards. Of course, other transition areas can also be provided here.
  • the rounded transition areas 42 form part of the support surface and merge into the midship area of the support surface 40 .
  • the outwardly adjoining upper sides of the outriggers 20 form support surfaces for the user's arms.
  • Side walls 21 terminate the longitudinal ends of the outriggers 20 .
  • the side walls 21 are convex to the underside of the watercraft to optimize the flow. There, the side walls 21 merge into inner boundary walls 26 .
  • the boundary walls 26 are also part of the outriggers 20 . As FIG. 2 shows, the boundary walls 26 are each divided into a front part 26 . 1 , a center part 26 . 2 and a rear part 26 . 3 .
  • the front parts 26 . 1 of the boundary walls 26 diverge in the outward direction and are thus arranged to optimize flow.
  • the outriggers 20 form protrusions directed towards the underside of the watercraft. These bulges run in the direction of the longitudinal axis of the watercraft, as shown in FIG. 2 .
  • the protrusions are formed by the side walls 21 and boundary walls 26 , wherein the boundary wall 26 adjoins the side walls 21 .
  • the protrusions are spaced apart from each other.
  • At least one, in the present exemplary embodiment two, deflection surfaces 14 , 15 are present between the bulges on the bottom hull 13 .
  • the sliding surface 14 , 15 or the sliding surfaces 14 , 15 and the boundary walls 26 form a water duct. This water duct is open to the underside of the watercraft. Furthermore, the water duct is also open in the area of the stern and the bow. This is clearly shown in FIG. 2 .
  • FIG. 3 shows a section through one of the outriggers 20 along the sectional path outlined in FIG. 2 as III-III.
  • the outriggers 20 have a flow channel 27 extending at least sectionally through the outrigger 20 .
  • the flow channel 27 has a water inlet 22 and a water outlet 24 .
  • the water inlet 22 is open towards the underside of the watercraft, and as FIG. 2 indicates, also towards the area located between the two outriggers 20 . It is also conceivable that the water inlet 22 is only open towards the underside or only towards the area between the two outriggers 20 .
  • a water acceleration device 52 is located in the flow channel 27 . It is designed as a propeller.
  • the water acceleration device 52 is supported by a drive shaft 51 .
  • the drive shaft 51 is preferably made of a carbon fiber reinforced plastic. It thus has a low weight. On the one hand, this results in a reduction in the overall weight of the watercraft. On the other hand, it decreases mass inertia to achieve a fast response.
  • the drive shaft 51 is connected to a motor 50 .
  • the motor 50 can be designed as an internal-rotor motor or as an external-rotor motor. To achieve a high available torque and thus high thrust, preferably an external rotor motor is used.
  • the drive motor 50 is housed in a flooding compartment 28 . At least a part of the flooding compartment 28 is located in the area of the outrigger 20 .
  • a water inlet port 23 and a water outlet port 25 are assigned to the flooding compartment 28 . In this case, the water inlet port 23 and the water outlet port 25 are arranged offset from each other in the longitudinal direction of the watercraft. As FIG. 2 shows, the water inlet port 23 ends in the area of the bow.
  • the water outlet port 25 is arranged in the area of the stern 25 .
  • FIG. 1 shows that the water outlet port 25 can be open, for instance having an annular shape, around the water outlet 24 .
  • a motor 50 can be arranged in the flooding compartment 28 .
  • a wall element is arranged between the flooding compartment 28 and the flow channel 27 .
  • the shaft 51 penetrates this wall element at a suitable point.
  • the two outriggers 20 are structurally identical, i.e. the above explanations apply to both outriggers 20 , preferably the two outriggers 20 are of mirror symmetrical construction.
  • Both motors 50 can be supplied centrally from one power supply 60 .
  • the power supply 60 is housed in the hull 10 of the watercraft.
  • the power supply 60 is located in the area of the bow 11 of the watercraft, as can be seen in FIG. 3 .
  • the power supply 60 is arranged amidships.
  • each of the power supplies 60 then preferably supplies one of the two motors 50 in the outriggers 20 .
  • the power supplies 60 may be disposed on either side of the center transverse plane extending in the longitudinal direction of the watercraft. In this way, the load is distributed.
  • the power supplies 60 are of identical design, resulting in a reduction of the number of required parts and also in a uniform weight distribution.
  • the two power supplies 60 are arranged symmetrically with respect to the center transverse plane.
  • the one power supply 60 or both power supplies 60 are located in the area of the flooding compartments 28 . In that way, the power supply during operation can be cooled.
  • the flooding compartments 28 are supplied via separate water inlet ports 23 .
  • one joint water inlet port 23 is provided for both flooding compartments and/or one joint water outlet port 25 is provided for both flooding compartments 28 .
  • one joint flooding compartment 28 is provided, in which both motors 50 and/or the power supply 60 is/are arranged. It is also conceivable that for cooling purposes an electrical regulating unit for the watercraft may be housed in the one or more flooding compartments 28 . The regulating unit can of course also be located at another suitable place on the watercraft
  • the regulating unit may be used to individually control the power output of the two motors 50 connected to the power supply 60 or power supplies 60 .
  • the handles 31 have control elements 31 A, 31 B as described above.
  • the control elements 31 A, 31 B are connected in such a way that the left handle 31 can be used to control one motor and the right handle 31 can be used to control the other motor 50 .
  • the user can in that way control the power output of the motors 50 individually. This makes for an improved turning behavior. For instance, if the starboard side motor 50 is operated at a higher power than the port side motor 50 , cornering in the port direction is supported.
  • a tilt sensor is arranged in the hull 10 or on the hull 10 .
  • This tilt sensor detects the tilt of the watercraft about its central longitudinal axis.
  • the tilt sensor can be used to qualitatively or quantitatively measure the tilt of the watercraft about its central longitudinal axis.
  • the tilt sensor is connected to a regulating device.
  • the regulating device is designed to control the two motors 50 as a function of the signal from the tilt sensor when the watercraft is tilted in such a way that the motors 50 have a differing power outputs. In this way, turning behavior can be influenced solely by the tilt of the watercraft.
  • one or more vents are assigned to the flooding compartments 28 , preferably in the upper area.
  • water inlets 22 and the water outlets 24 are also used to fill the flow channels 27 .
  • the watercraft can be put into operation.
  • the user activates the motors 50 using the controls 31 A, 31 B on the handles 31 .
  • the drive shafts 51 and with them the water acceleration devices 52 are operated.
  • the water acceleration device 52 draws water through the water inlets 22 to accelerate it in the flow channel 27 .
  • Downstream of the water acceleration devices 52 the accelerated water has a swirl the water acceleration devices 52 have imprinted thereon. Therefore, as can be seen in FIG. 3 , flow stators 53 are provided downstream of the water acceleration devices 52 .
  • These flow stators 53 have water guide vanes, which are arranged in the opposite direction to the swirl of the water jet and reduce the swirl of the water jet, preferably eliminating it completely. Downstream of the flow stators 53 , the water jet exits the watercraft and develops its thrust effect.
  • the sliding surfaces 14 , 15 can be designed as convex or concave surfaces. The water is drawn into the water duct between the bulges and the sliding surfaces 14 , 15 and accelerated, resulting in improved driving characteristics.
  • both the flooding compartment 28 and the flow channels 27 empty through the water inlets 22 , the water outlets 24 , the water inlet ports 23 , and the water outlet ports 25 . This significantly reduces the weight of the watercraft and makes it easy to transport.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Transmission Devices (AREA)
  • Gear Transmission (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US17/422,340 2019-01-17 2019-12-30 Watercraft Abandoned US20220106023A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102019101251.1 2019-01-17
DE102019101251.1A DE102019101251A1 (de) 2019-01-17 2019-01-17 Wasserfahrzeug
PCT/EP2019/087128 WO2020148077A1 (de) 2019-01-17 2019-12-30 Wasserfahrzeug

Publications (1)

Publication Number Publication Date
US20220106023A1 true US20220106023A1 (en) 2022-04-07

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US17/422,340 Abandoned US20220106023A1 (en) 2019-01-17 2019-12-30 Watercraft

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Country Link
US (1) US20220106023A1 (de)
EP (1) EP3911564A1 (de)
JP (1) JP7581211B2 (de)
KR (1) KR20210114032A (de)
CN (1) CN113329935A (de)
AU (1) AU2019422771B2 (de)
BR (1) BR112021013625A2 (de)
DE (1) DE102019101251A1 (de)
MX (1) MX2021008585A (de)
WO (1) WO2020148077A1 (de)

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Publication number Priority date Publication date Assignee Title
WO2022261294A1 (en) * 2021-06-10 2022-12-15 Seajet Propulsion, Inc. Bow and stern thrusters for watercraft
US11485457B1 (en) 2021-06-14 2022-11-01 Kai Concepts, LLC Hydrojet propulsion system
FR3153074A1 (fr) * 2023-09-19 2025-03-21 CNXT Industry véhicule d’exploration sous-marine
FR3153075A1 (fr) * 2023-09-19 2025-03-21 CNXT Industry véhicule d’exploration sous-marine

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WO2020148077A1 (de) 2020-07-23
AU2019422771B2 (en) 2025-07-10
JP2022517430A (ja) 2022-03-08
CN113329935A (zh) 2021-08-31
DE102019101251A1 (de) 2020-07-23
BR112021013625A2 (pt) 2021-09-14
MX2021008585A (es) 2021-08-11
KR20210114032A (ko) 2021-09-17
EP3911564A1 (de) 2021-11-24
JP7581211B2 (ja) 2024-11-12

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