US20240051647A1 - Marine propeller - Google Patents
Marine propeller Download PDFInfo
- Publication number
- US20240051647A1 US20240051647A1 US18/267,334 US202118267334A US2024051647A1 US 20240051647 A1 US20240051647 A1 US 20240051647A1 US 202118267334 A US202118267334 A US 202118267334A US 2024051647 A1 US2024051647 A1 US 2024051647A1
- Authority
- US
- United States
- Prior art keywords
- propeller
- marine
- ship
- blades
- propulsion system
- 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.)
- Pending
Links
- 238000010276 construction Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
- B63H1/20—Hubs; Blade connections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/04—Propulsive elements directly acting on water of rotary type with rotation axis substantially at right angles to propulsive direction
- B63H1/06—Propulsive elements directly acting on water of rotary type with rotation axis substantially at right angles to propulsive direction with adjustable vanes or blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H1/00—Propulsive elements directly acting on water
- B63H1/02—Propulsive elements directly acting on water of rotary type
- B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
- B63H1/14—Propellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
Definitions
- the present invention relates to a marine propeller used in the propulsion system of a ship. More precisely the invention relates to the structure of this kind propeller and to a marine propulsion system utilizing this kind of a propeller.
- the propulsion systems of ships typically in general level comprise one or more engines or motors providing rotational movement and torque, one or more propeller shafts for transferring the rotational movement and torque from the one or more engines to one or more marine propellers, and marine propellers for transferring the rotational movement and torque to thrust for the ship.
- the marine propellers used in ships comprise typically a propeller hub to which the blades of the propeller are fixed, and via which propeller hub the propeller is fixed to the propeller shaft.
- the marine propellers can be manufactured as a single piece, i.e. by casting, wherein the hub and blades of the propeller form a solid propeller. This kind of propellers are also called monobloc propellers.
- the marine propellers can be manufactured in pieces, typically the hub and the individual blades as separate pieces, wherein the blades are fixed to the hub typically with bolts and studs to form an assembled propeller.
- Monobloc propellers are generally used, but the larger ship propellers cannot be cast in a single casting due to the size of the propeller in relation to the size of the available casting equipment, which generally leads to the use of assembled propeller. Further advantage of the assembled propellers is that individual blades can be changed without removing and changing of the whole propeller when the blades get damaged, which makes them preferable for example for ice-going vessels. This makes the repairing process of the propeller easier and can often be carried out without drydocking the ship.
- the power of engines used in propulsion systems of ships have been continuously increasing, which have caused the strength requirements of the marine propellers to increase correspondingly.
- the increased weight of propellers causes increased structural demands and restrictions for the rest of the propulsion system, such as for the diameter of the propeller shaft and for the placement of bearings.
- the increase of material used in the manufacturing of the propellers also increases the manufacturing, installation, and transportation requirements of the propellers, as well as increases the cost of the propellers.
- the present invention provides a novel ship propeller, which propeller does not comprise a hub. This allows significant weight savings for the propeller of the invention in comparison to the prior art propellers, thus deceasing the related structural requirements of the propulsion system of the ship and cost of the propeller itself. Further, the propeller of the invention typically comprises less parts than the prior art assembled propellers, which makes it easier to manufacture.
- the marine propeller of the invention for a propulsion system of a ship comprises a plurality of detachable blades, and is configured to be fixed to a propeller shaft of a propulsion system of a ship, wherein the detachable blades forming the propeller are configured to be fixed to the end surface of the propeller shaft or of a flange formed at the end of the propeller shaft.
- the blades of the propeller are connected to the propeller shaft preferably directly, which means that the fixing means, such as bolts and preferably also studs for example, extend to the material of the propeller shaft.
- a ship preferably means a marine vessel of a suitable size to properly allow the utilization of the advantages obtained with the present invention. In practice this means that the ship typically has a length of 24 m or more.
- the propeller of the invention is preferably a large marine propeller in order to properly allow the utilization of the advantages obtained with the present invention.
- the diameter of the propeller is 2 m or more, preferably 3 m or more.
- the material of the propeller is preferably metal, such as bronze or stainless steel for example, but other metal materials may also be used.
- the propeller comprises a cap connected to the detachable blades of the propeller. This cap allows additional structural support for the blades and for the whole propeller at the side away from the propeller shaft.
- number of detachable blades is three or more.
- the number of detachable blades in a propeller is four, but the number of detachable blades may also be three, five or six.
- the detachable blades are fixed to the shaft with a fixing system comprising bolts and preferably also studs. This allows the separate blades to be replaced and repaired easily when the need arises without drydocking the ship and without disassembling the whole propeller.
- the present invention also provides a marine propulsion system for providing propulsion for a ship, which propulsion system comprises at least one engine or motor, a propeller, and a propeller shaft for conveying the rotational power from the at least one engine to the propeller, wherein the propeller is a marine propeller of the invention as defined above.
- the engine or motor in the propulsion system of the present invention may be any suitable device, system and/or arrangement providing rotative motion and torque for the propeller via the propeller shaft. Examples of these include combustion engine, electrical engine, and turbine.
- the propulsion system of the invention may also be implemented as a pod-type construction, wherein the propulsion system is located, completely or partially, in a separate pod that can be rotated in relation to the hull of the ship.
- the system may typically comprises a rope guard.
- the present invention also provides a ship that comprises a marine propeller according to the invention and/or a marine propulsion system according to the invention.
- the ship of the invention is preferably an ice class ship, i.e. ship designed to travel in at least some thickness of ice, such as an icebreaker, a Polar Class ship, or an Arctic Class ship for example, wherein the construction of the propeller allows easy repairing of damaged blades.
- the ship of the invention may be an open-water ship wherein the construction of the propeller of the invention allows manufacture of very large propellers.
- FIG. 1 shows schematically a prior art marine propeller
- FIGS. 2 A and 2 B show schematically an embodiment of a marine propeller of the invention
- FIGS. 3 A- 3 D show schematically alternative embodiments of the present invention
- FIG. 4 shows schematically an embodiment of the present invention as exploded view
- FIG. 5 shows schematically an embodiment of a ship utilizing the present invention.
- the prior art marine propeller 1 shown in FIG. 1 as a cross-sectional view comprises a plurality of separate blades 2 comprising a fixing portion 2 a via which fixing portion the blades are fixed to a propeller hub 3 with bolts.
- the propeller 1 is fixed to a propeller shaft 4 in with bolts extending through a flange 5 formed at or attached to the end of the propeller shaft and to the hub 3 .
- the propeller 1 also comprises a propeller cap 6 fixed at the opposite end of the propeller in relation to the attachment to the propeller shaft 4 , to cover the hollow portion of the propeller hub 3 .
- FIGS. 2 A and 2 B show an embodiment of the propeller 10 of the invention, which comprises a plurality, four in this embodiment as can be seen from FIG. 2 B , of separate blades 2 comprising a fixing portion 2 a.
- the blades 2 forming the propeller 10 are connected directly to a flange 5 formed at the end of the propeller shaft 4 via their fixing portions 2 a with bolts.
- a propeller cap 6 At the opposite end of the propeller 10 in relation to the flange 5 of the propeller shaft 4 , to the fixing portions 2 a of the blades 2 are fixed a propeller cap 6 .
- the propeller cap 6 in this embodiment provides further structural support for the blades 2 of the propeller 10 .
- FIG. 2 B illustrates the fixing of the fixing portions 2 a of the blades 2 to the flange 5 and/or to the propeller cap 6 .
- four blades 2 are fixed via their fixing portions 2 a to the flange 5 and to the cap 6 with bolts and studs for forming the propeller 10 .
- FIGS. 3 A- 3 D show alternative embodiments of the propeller 10 of the invention attached to the propeller shaft 4 as cross-sectional views.
- the blades 2 of the propeller 10 are formed so that their fixing portions 2 a comprise sections extending radially in relation to the center axis of the propeller shaft 4 . These sections of the fixing portions 2 a of the blades 2 area for the fixing bolts and holes via which the blades can be attached to the end surface of the flange 5 formed at the end of the propeller shaft 4 .
- This formation of propeller 10 from the blades 2 in this embodiment also creates a hollow area 8 inside the propeller, which hollow area is closed with a cap part 6 , which also provides structural strength for the propeller and its blades.
- the blades 2 forming the propeller 10 are fixed via first end of their fixing portions 2 a on the end surface of the flange 5 formed at the end of the propeller shaft 4 .
- a cap part 6 closing the hollow area 8 inside the propeller 10 .
- the fixing portions 2 a of the blades 2 extend at an angle in the longitudinal direction of the propeller shaft 4 so that the diameter formed by the fixing portions 2 a is greater at the flange 5 than at the cap part 6 .
- FIG. 3 C corresponds substantially to the embodiment of FIG. 3 B , but in this embodiment the fixing portions 2 a of the blades 2 extend at an angle in the longitudinal direction of the propeller shaft 4 so that the diameter formed by the fixing portions 2 a is smaller at the flange 5 than at the cap part 6 .
- FIG. 3 D shows an embodiment, there the outer surface of the fixing portions 2 a of the blades 2 forming the propeller 10 are formed curved.
- FIG. 4 schematically showing an embodiment of the present invention as an exploded view, further illustrates the construction of the propeller 10 of the invention.
- FIG. 4 In the embodiment of FIG. 4 four blades 2 via their fixing portions 2 a are connected to the end surface of the flange 5 formed at the propeller shaft 4 with bolts 11 and studs 14 .
- This embodiment also substantially corresponds to the embodiment shown in FIG. 2 A .
- a cap part 6 With bolts 12 and studs 13 .
- the cap part 6 gives further support for the blades 2 of the propeller 10 and also encloses the open space 8 inside the propeller.
- FIG. 5 shows schematically a ship 20 into which the propeller 10 and propulsion system of the present invention can preferably be applied.
- the ship 20 is in this embodiment an icebreaker.
- the propeller may be located at the stern of the ship 20 , as shown in FIG. 5 , or the propeller may be located at the bow of the ship, or in the steering propeller of the ship.
- the propeller 20 of the invention may be an open propeller, as shown in FIG. 5 , or a ducted propeller.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Marine propeller for a propulsion system of a ship, which propeller comprises a plurality of detachable blades, and which propeller is configured to be fixed to a propeller shaft of a propulsion system of a ship, wherein the detachable blades forming the propeller are configured to be fixed to the end surface of the propeller shaft or of a flange formed at the end of the propeller shaft. The invention also relates to a marine propulsion system and to a ship utilizing this kind of marine propeller.
Description
- The present invention relates to a marine propeller used in the propulsion system of a ship. More precisely the invention relates to the structure of this kind propeller and to a marine propulsion system utilizing this kind of a propeller.
- The propulsion systems of ships typically in general level comprise one or more engines or motors providing rotational movement and torque, one or more propeller shafts for transferring the rotational movement and torque from the one or more engines to one or more marine propellers, and marine propellers for transferring the rotational movement and torque to thrust for the ship.
- The marine propellers used in ships comprise typically a propeller hub to which the blades of the propeller are fixed, and via which propeller hub the propeller is fixed to the propeller shaft.
- The marine propellers can be manufactured as a single piece, i.e. by casting, wherein the hub and blades of the propeller form a solid propeller. This kind of propellers are also called monobloc propellers. Alternatively, the marine propellers can be manufactured in pieces, typically the hub and the individual blades as separate pieces, wherein the blades are fixed to the hub typically with bolts and studs to form an assembled propeller.
- Monobloc propellers are generally used, but the larger ship propellers cannot be cast in a single casting due to the size of the propeller in relation to the size of the available casting equipment, which generally leads to the use of assembled propeller. Further advantage of the assembled propellers is that individual blades can be changed without removing and changing of the whole propeller when the blades get damaged, which makes them preferable for example for ice-going vessels. This makes the repairing process of the propeller easier and can often be carried out without drydocking the ship.
- The power of engines used in propulsion systems of ships have been continuously increasing, which have caused the strength requirements of the marine propellers to increase correspondingly. This has caused the weight of marine propellers to increase. The increased weight of propellers causes increased structural demands and restrictions for the rest of the propulsion system, such as for the diameter of the propeller shaft and for the placement of bearings. Further, the increase of material used in the manufacturing of the propellers also increases the manufacturing, installation, and transportation requirements of the propellers, as well as increases the cost of the propellers.
- In order to overcome the above problems with the prior art assembled propellers, the present invention provides a novel ship propeller, which propeller does not comprise a hub. This allows significant weight savings for the propeller of the invention in comparison to the prior art propellers, thus deceasing the related structural requirements of the propulsion system of the ship and cost of the propeller itself. Further, the propeller of the invention typically comprises less parts than the prior art assembled propellers, which makes it easier to manufacture.
- The marine propeller of the invention for a propulsion system of a ship comprises a plurality of detachable blades, and is configured to be fixed to a propeller shaft of a propulsion system of a ship, wherein the detachable blades forming the propeller are configured to be fixed to the end surface of the propeller shaft or of a flange formed at the end of the propeller shaft.
- This allows the hub part of the propeller to be removed from the construction of the propeller of the invention, which provides significant weight, and related cost, savings.
- In the present invention the blades of the propeller are connected to the propeller shaft preferably directly, which means that the fixing means, such as bolts and preferably also studs for example, extend to the material of the propeller shaft.
- In the context of the present invention a ship preferably means a marine vessel of a suitable size to properly allow the utilization of the advantages obtained with the present invention. In practice this means that the ship typically has a length of 24 m or more.
- The propeller of the invention is preferably a large marine propeller in order to properly allow the utilization of the advantages obtained with the present invention. In practice this means that the diameter of the propeller is 2 m or more, preferably 3 m or more. The material of the propeller is preferably metal, such as bronze or stainless steel for example, but other metal materials may also be used.
- In an embodiment of a marine propeller of the invention the propeller comprises a cap connected to the detachable blades of the propeller. This cap allows additional structural support for the blades and for the whole propeller at the side away from the propeller shaft.
- In an embodiment of a marine propeller of the invention number of detachable blades is three or more. Preferably the number of detachable blades in a propeller is four, but the number of detachable blades may also be three, five or six.
- In an embodiment of a marine propeller of the invention the detachable blades are fixed to the shaft with a fixing system comprising bolts and preferably also studs. This allows the separate blades to be replaced and repaired easily when the need arises without drydocking the ship and without disassembling the whole propeller.
- The present invention also provides a marine propulsion system for providing propulsion for a ship, which propulsion system comprises at least one engine or motor, a propeller, and a propeller shaft for conveying the rotational power from the at least one engine to the propeller, wherein the propeller is a marine propeller of the invention as defined above.
- The engine or motor in the propulsion system of the present invention may be any suitable device, system and/or arrangement providing rotative motion and torque for the propeller via the propeller shaft. Examples of these include combustion engine, electrical engine, and turbine.
- In addition to the traditional propulsion systems, wherein the propulsion system is located inside the hull of a ships, with the exception of the propeller and part of the propeller shaft, the propulsion system of the invention may also be implemented as a pod-type construction, wherein the propulsion system is located, completely or partially, in a separate pod that can be rotated in relation to the hull of the ship.
- In an embodiment of a marine propulsion system of the invention the system may typically comprises a rope guard.
- The present invention also provides a ship that comprises a marine propeller according to the invention and/or a marine propulsion system according to the invention. The ship of the invention is preferably an ice class ship, i.e. ship designed to travel in at least some thickness of ice, such as an icebreaker, a Polar Class ship, or an Arctic Class ship for example, wherein the construction of the propeller allows easy repairing of damaged blades. Alternatively, the ship of the invention may be an open-water ship wherein the construction of the propeller of the invention allows manufacture of very large propellers.
- More precisely the features defining a marine propeller in accordance with the present invention are presented in
claim 1, the features defining a marine propulsion system in accordance with the present invention are presented inclaim 5, and the features defining a ship according to the present invention are presented in claim 7. Dependent claims present advantageous features and embodiments of the invention. - Exemplifying embodiments of the invention and their advantages are explained in greater detail below in the sense of example and with reference to accompanying drawings, where
-
FIG. 1 shows schematically a prior art marine propeller, -
FIGS. 2A and 2B show schematically an embodiment of a marine propeller of the invention, -
FIGS. 3A-3D show schematically alternative embodiments of the present invention, -
FIG. 4 shows schematically an embodiment of the present invention as exploded view, and -
FIG. 5 shows schematically an embodiment of a ship utilizing the present invention. - The prior art
marine propeller 1 shown inFIG. 1 as a cross-sectional view comprises a plurality ofseparate blades 2 comprising afixing portion 2 a via which fixing portion the blades are fixed to a propeller hub 3 with bolts. Thepropeller 1 is fixed to apropeller shaft 4 in with bolts extending through aflange 5 formed at or attached to the end of the propeller shaft and to the hub 3. - In the embodiment of
FIG. 1 , thepropeller 1 also comprises apropeller cap 6 fixed at the opposite end of the propeller in relation to the attachment to thepropeller shaft 4, to cover the hollow portion of the propeller hub 3. -
FIGS. 2A and 2B show an embodiment of thepropeller 10 of the invention, which comprises a plurality, four in this embodiment as can be seen fromFIG. 2B , ofseparate blades 2 comprising afixing portion 2 a. - In this embodiment the
blades 2 forming thepropeller 10 are connected directly to aflange 5 formed at the end of thepropeller shaft 4 via theirfixing portions 2 a with bolts. At the opposite end of thepropeller 10 in relation to theflange 5 of thepropeller shaft 4, to thefixing portions 2 a of theblades 2 are fixed apropeller cap 6. Thepropeller cap 6 in this embodiment provides further structural support for theblades 2 of thepropeller 10. -
FIG. 2B illustrates the fixing of thefixing portions 2 a of theblades 2 to theflange 5 and/or to thepropeller cap 6. In this embodiment fourblades 2 are fixed via theirfixing portions 2 a to theflange 5 and to thecap 6 with bolts and studs for forming thepropeller 10. -
FIGS. 3A-3D show alternative embodiments of thepropeller 10 of the invention attached to thepropeller shaft 4 as cross-sectional views. - In the embodiment of
FIG. 3A theblades 2 of thepropeller 10 are formed so that theirfixing portions 2 a comprise sections extending radially in relation to the center axis of thepropeller shaft 4. These sections of the fixingportions 2 a of theblades 2 area for the fixing bolts and holes via which the blades can be attached to the end surface of theflange 5 formed at the end of thepropeller shaft 4. This formation ofpropeller 10 from theblades 2 in this embodiment also creates ahollow area 8 inside the propeller, which hollow area is closed with acap part 6, which also provides structural strength for the propeller and its blades. - In the embodiment of
FIG. 3B theblades 2 forming thepropeller 10 are fixed via first end of theirfixing portions 2 a on the end surface of theflange 5 formed at the end of thepropeller shaft 4. In the opposite end and at the end surfaces of the fixingportions 2 a of theblades 2 in relation to theflange 5 is fixed acap part 6 closing thehollow area 8 inside thepropeller 10. In this embodiment the fixingportions 2 a of theblades 2 extend at an angle in the longitudinal direction of thepropeller shaft 4 so that the diameter formed by the fixingportions 2 a is greater at theflange 5 than at thecap part 6. - The embodiment of
FIG. 3C corresponds substantially to the embodiment ofFIG. 3B , but in this embodiment the fixingportions 2 a of theblades 2 extend at an angle in the longitudinal direction of thepropeller shaft 4 so that the diameter formed by the fixingportions 2 a is smaller at theflange 5 than at thecap part 6. -
FIG. 3D shows an embodiment, there the outer surface of the fixingportions 2 a of theblades 2 forming thepropeller 10 are formed curved. -
FIG. 4 , schematically showing an embodiment of the present invention as an exploded view, further illustrates the construction of thepropeller 10 of the invention. - In the embodiment of
FIG. 4 fourblades 2 via theirfixing portions 2 a are connected to the end surface of theflange 5 formed at thepropeller shaft 4 withbolts 11 andstuds 14. This embodiment also substantially corresponds to the embodiment shown inFIG. 2A . - At the opposite end of the fixing
portions 2 in relation to theflange 5 is fixed acap part 6 withbolts 12 andstuds 13. Thecap part 6 gives further support for theblades 2 of thepropeller 10 and also encloses theopen space 8 inside the propeller. -
FIG. 5 shows schematically aship 20 into which thepropeller 10 and propulsion system of the present invention can preferably be applied. Theship 20 is in this embodiment an icebreaker. - In relation of the
propeller 10 of the invention it is to be noted that the propeller may be located at the stern of theship 20, as shown inFIG. 5 , or the propeller may be located at the bow of the ship, or in the steering propeller of the ship. Further, thepropeller 20 of the invention may be an open propeller, as shown inFIG. 5 , or a ducted propeller. - The specific exemplifying embodiments of the invention shown in the figures and discussed above should not be construed as limiting. A person skilled in the art can amend and modify the embodiments described in many evident ways within the scope of the attached claims. Thus, the invention is not limited merely to the embodiments described.
Claims (9)
1. A marine propeller for a propulsion system of a ship, which propeller comprises a plurality of detachable blades, and which propeller is configured to be fixed to a propeller shaft of a propulsion system of a ship, wherein the detachable blades forming the propeller are configured to be fixed to an end surface of the propeller shaft or of a flange formed at the end of the propeller shaft.
2. The marine propeller of claim 1 , wherein the propeller comprises a cap connected to the detachable blades of the propeller.
3. The marine propeller of claim 1 , wherein the number of detachable blades is three or more.
4. The marine propeller of claim 1 , wherein the detachable blades are fixed to the propeller shaft with a fixing system comprising bolts.
5. A marine propulsion system for providing propulsion for a ship, which propulsion system comprises at least one engine or motor, a propeller, and a propeller shaft for conveying rotational power from the at least one engine to the propeller, wherein the propeller is a marine propeller according to claim 1 .
6. The marine propulsion system of claim 5 , wherein the system comprises a rope guard.
7. A ship comprising a marine ship propeller according to claim 1 .
8. A ship comprising a marine propulsion system of claim 5 .
9. The marine propeller of claim 4 , wherein the fixing system additionally comprises studs.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20206333 | 2020-12-18 | ||
FI20206333A FI130447B (en) | 2020-12-18 | 2020-12-18 | Marine propeller |
PCT/FI2021/050798 WO2022129676A1 (en) | 2020-12-18 | 2021-11-22 | Marine propeller |
Publications (1)
Publication Number | Publication Date |
---|---|
US20240051647A1 true US20240051647A1 (en) | 2024-02-15 |
Family
ID=78821645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US18/267,334 Pending US20240051647A1 (en) | 2020-12-18 | 2021-11-22 | Marine propeller |
Country Status (7)
Country | Link |
---|---|
US (1) | US20240051647A1 (en) |
EP (1) | EP4263343A1 (en) |
KR (1) | KR20230118671A (en) |
CN (1) | CN116615374A (en) |
CA (1) | CA3203914A1 (en) |
FI (1) | FI130447B (en) |
WO (1) | WO2022129676A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3762359A (en) * | 1971-10-20 | 1973-10-02 | Mobil Oil Corp | Marine propeller stern bearing-shaft design and seal arrangement |
US4150921A (en) * | 1977-07-28 | 1979-04-24 | Propulsion Systems, Inc. | Built-up marine propellers with adjustable pitch and axially removable blades |
US20140079553A1 (en) * | 2012-09-14 | 2014-03-20 | Mehmet Nevres ULGEN | Marine Propeller Having Demountable Blades |
US9944372B1 (en) * | 2015-09-16 | 2018-04-17 | Bradford C. Stahl | Efficient reverse thrusting modular propeller |
US20190100293A1 (en) * | 2017-09-29 | 2019-04-04 | Mehmet Nevres ULGEN | Unidirectional torque boosting propeller |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB191001061A (en) * | 1910-01-15 | 1910-10-06 | William Henry Ireland | Improvements in and relating to Propellers. |
ES1071458Y (en) * | 2009-11-05 | 2010-05-27 | Abal Pablo Alfonso Gonzalez | BOAT PROPULSION DEVICE |
SE534771C2 (en) * | 2010-03-17 | 2011-12-13 | Itt Mfg Enterprises Inc | Propeller assembly comprising a hub and at least two blades |
KR200484377Y1 (en) * | 2016-05-18 | 2017-08-30 | 주식회사 지노스 | Lightweight Composite Propellers for Outboard Motor |
KR20190072370A (en) * | 2017-12-15 | 2019-06-25 | 대우조선해양 주식회사 | Propeller for ship and making method thereof |
-
2020
- 2020-12-18 FI FI20206333A patent/FI130447B/en active
-
2021
- 2021-11-22 CA CA3203914A patent/CA3203914A1/en active Pending
- 2021-11-22 CN CN202180085455.6A patent/CN116615374A/en active Pending
- 2021-11-22 WO PCT/FI2021/050798 patent/WO2022129676A1/en active Application Filing
- 2021-11-22 KR KR1020237024115A patent/KR20230118671A/en unknown
- 2021-11-22 EP EP21819532.9A patent/EP4263343A1/en active Pending
- 2021-11-22 US US18/267,334 patent/US20240051647A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3762359A (en) * | 1971-10-20 | 1973-10-02 | Mobil Oil Corp | Marine propeller stern bearing-shaft design and seal arrangement |
US4150921A (en) * | 1977-07-28 | 1979-04-24 | Propulsion Systems, Inc. | Built-up marine propellers with adjustable pitch and axially removable blades |
US20140079553A1 (en) * | 2012-09-14 | 2014-03-20 | Mehmet Nevres ULGEN | Marine Propeller Having Demountable Blades |
US9944372B1 (en) * | 2015-09-16 | 2018-04-17 | Bradford C. Stahl | Efficient reverse thrusting modular propeller |
US20190100293A1 (en) * | 2017-09-29 | 2019-04-04 | Mehmet Nevres ULGEN | Unidirectional torque boosting propeller |
Also Published As
Publication number | Publication date |
---|---|
KR20230118671A (en) | 2023-08-11 |
CN116615374A (en) | 2023-08-18 |
WO2022129676A1 (en) | 2022-06-23 |
CA3203914A1 (en) | 2022-06-23 |
EP4263343A1 (en) | 2023-10-25 |
FI130447B (en) | 2023-09-05 |
FI20206333A1 (en) | 2022-06-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20080089786A1 (en) | Counter-Rotating Integrated Propeller Assembly | |
EP2851280B1 (en) | Modular azimuth thruster | |
US7614926B2 (en) | Means for bearing a propulsion unit and a propulsion system for a waterbourne vessel | |
US6475045B2 (en) | Thrust enhancing propeller guard assembly | |
JP6633318B2 (en) | Azimuth thruster | |
US6699016B1 (en) | Boat propeller | |
EP2951082A1 (en) | Propulsion system for a vessel | |
US7025642B1 (en) | Boat propeller | |
US20240051647A1 (en) | Marine propeller | |
FI113753B (en) | System, method and method of installation on a craft | |
JP4005601B2 (en) | Propulsion system layout | |
RU180240U1 (en) | SHIP MARINE INSTALLATION | |
US20130157527A1 (en) | Watercraft Propulsion Apparatus | |
KR101620464B1 (en) | The Tunnel Thruster of Ship | |
EP0867361A2 (en) | Nautical propulsor with ducted rotor propeller | |
US9463853B2 (en) | Propeller propulsion system for floating structures | |
RU2708696C1 (en) | Screw propeller of screw-steering column of water vessel and screw-steering column with said screw propeller | |
US33364A (en) | Improved propeller | |
JP7326172B2 (en) | vessel | |
US11767006B2 (en) | Rotor assemblies for vehicle propulsion | |
GB2308835A (en) | Buoyant Paddle Screw Propeller | |
Meier-Peter | 11.6 Power transmission systems: 11 Ship traffic propulsion technologies | |
Taylor | The Variable-pitch Marine Propeller | |
US713785A (en) | Marine propulsion. | |
GB190621851A (en) | Improvements in Propelling Devices for Ships and Boats |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AKER ARCTIC TECHNOLOGY OY, FINLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LINDROOS, JUUSO;VALTONEN, VILLE;SIGNING DATES FROM 20211220 TO 20211228;REEL/FRAME:064022/0336 |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER |