Key information

Title
Rotor for extraction of energy from flowing fluid
Application number
20241066
Case type
National
Status
09.03.2026 Patent meddelt (B1)
Filed
24.10.2024
Effective date
24.10.2024
Publicly available
09.03.2026
Next annual fee due
31.10.2026
Applicant
Oceanenvi AS (NO)
Owner
Oceanenvi AS (NO)
Inventor
Dag Walther Ammerud (NO)
Agent
ACAPO ONSAGERS AS (NO)
Granted
09.03.2026
Patent number
349595
Expiry date
24.10.2044

Abstract and drawing

Disclaimer: This text has been machine-scanned and may contain errors – please refer to "Publications" for legally binding content.
It is described a rotor (1) for extracting energy from flowing fluid. The rotor comprises a first frame (2) and second frame (3), at least two wanes (4) positioned equidistant in a circle around a central axis A of the rotor. Each wane (4) comprises an outer edge (5) and an inner edge (6). The wane (4) extends between the first and second frame (2, 3) and a horizontal crosssection of the wane has a S-shape comprising a curved main section (7) starting from the outer edge (5) and a smaller oppositely curved secondary section (8) starting at an inner end of the main section and ending at the inner edge (6). The inner edge (6) has a distance D to the central axis (A), thus leaving an open space near the central axis through which the fluid may flow freely.

Publications

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Documents

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Date
 Date Doc. No. Process Case number In/Out Journal description To/from
 02.09.2026 12-01 Saksbehandling 20241066(349595) UT PT Varsel om betaling av første årsavgift (3317) (PT20241066) ACAPO ONSAGERS AS
 09.03.2026 11-01 Saksbehandling 20241066(349595) UT PT Registreringsbrev nasjonal patent (15) (PT20241066)
16.12.2025 10-01 Saksbehandling 20241066 UT PT Meddelelse om patent ACAPO ONSAGERS AS
 26.05.2025 08-05 Saksbehandling 20241066 INN P29727NO00_Letter_to_NIPO_May_26,_2025 ACAPO ONSAGERS AS
 26.05.2025 08-04 Saksbehandling 20241066 INN P29727NO00 Norske krav ACAPO ONSAGERS AS
 26.05.2025 08-03 Saksbehandling 20241066 INN P29727NO00 endret spesifikasjon umerket ACAPO ONSAGERS AS
 26.05.2025 08-02 Saksbehandling 20241066 INN P29727NO00 endret spesifikasjon merket ACAPO ONSAGERS AS
 26.05.2025 08-01 Saksbehandling 20241066 INN Korrespondanse (Hovedbrev inn) ACAPO ONSAGERS AS
 10.05.2025 07-02 Saksbehandling 20241066 UT PT report 11:46:02
10.05.2025 07-01 Saksbehandling 20241066 UT Substantive examination ACAPO ONSAGERS AS
 19.12.2024 06-02 Saksbehandling 20241066 INN P29727NO00 Signed POA ACAPO ONSAGERS AS
 19.12.2024 06-01 Saksbehandling 20241066 INN Korrespondanse (Hovedbrev inn) ACAPO ONSAGERS AS
 05.11.2024 05-02 Saksbehandling 20241066 INN P29727NO00 Rettelse av oppfinners adresse ACAPO ONSAGERS AS
 05.11.2024 05-01 Saksbehandling 20241066 INN Korrespondanse (Hovedbrev inn) ACAPO ONSAGERS AS
 05.11.2024 04-01 Saksbehandling 20241066 UT Generelt brev uten frist NO ACAPO ONSAGERS AS
 28.10.2024 03-01 Saksbehandling 20241066 UT Formalia 1 ACAPO ONSAGERS AS
 28.10.2024 02-01 Saksbehandling 20241066 UT Infobrev til oppfinner ACAPO ONSAGERS AS
 24.10.2024 01-03 Saksbehandling 20241066 INN P29727NO00 Specification for filing ACAPO ONSAGERS AS
 24.10.2024 01-02 Saksbehandling 20241066 INN P29727NO00 Drawings for filing ACAPO ONSAGERS AS
 24.10.2024 01-01 Saksbehandling 20241066 INN Søknadsskjema Patent ACAPO ONSAGERS AS
 09-02 Saksbehandling 20241066 INN Korrespondanse (Hovedbrev inn) ACAPO ONSAGERS AS

Description, claims and drawings

Disclaimer: This text has been machine-scanned and may contain errors – please refer to "Publications" for legally binding content. Description
3495951Title: Rotor for extraction of energy from flowing fluid.DescriptionTechnical Field5 The invention pertains to a rotor for extracting energy from a fluid flow, more specifically to extract energy from relatively slow waterflows as found in rivers, tidal streams, and ocean currents.Background10 Many propellers, turbines and rotors have been suggested for extraction of energy from a relatively slow waterflow as found in rivers, tidal flows and ocean currents, but none has achieved commercial production of energy. Also, tidal sail and tethered turbines with and without shrouding devices guiding more water into the turbines have been tested.15 However, the tidal flows contain large quantities of energy if harvested. One cubic meter of water weighs 1000 kg and the energy in a waterflow increases with the power of three as the velocity increases. A reasonably sized rotor having a flow cross-section of 100 m2 will have 200 tons of water flowing through every second if the water speed is 2 m/s which is a typical max tidal water flow velocity, although tidal flows 20 has been measure up to 11-12 m/s.On the other hand, the ocean is a harsh environment for constructions harvesting energy and maintaining the different energy extraction devices has proven to be expensive and time consuming. However, as the energy prices rise and the demand for green solutions increases tidal energy could be an excellent supplement to an 25 energy mix comprising solar and wind energy because their fluctuations are different and in addition, the tidal energy available at a f\given location can to a large degree be predicted.WO 2022099353 A1 details a rotor formed by multiple S-shaped blades, where successive blades are mounted to each other, and the internal portions combine to 30 form a closed curve. This configuration provides rigidity and may resemble the S 3495952shaped cross-section described in your claim. Hence, the energy sector needs an improved rotor for extracting energy from tidal flows and ocean currents.WO 2018193155 A1 describes a turbine with curved blades positioned to form S-shaped rotating ducts, interrupted in the middle by an empty turbine throat. The 5 design allows fluid to flow through the central area.CN 103174585 A discusses a vertical axis wind turbine with S-shaped blades. The design focuses on optimizing blade shape for efficient energy extraction. Usually this type of turbine is called a Savonius rotor.The object of the invention is to provide a robust and close to maintenance free rotor 10 for extracting energy from a water flow.Short summary of the inventionIn one aspect of the invention it is described a rotor for extracting energy from a flowing fluid comprising a first frame and a second frame and at least three vanes 15 positioned equidistant in a circle around a central axis A of the rotor Each vane comprises an outer edge and an inner edge. Each vane extends between the first and second frame. Preferably, the frames are parallel with each other and the vanes are at a right angle with the frames. However, the vanes may also have a different angle with the frames. Assuming the central axis A is vertical, a horizontal cross-section of 20 the vane has a S-shape comprising a curved main section starting from the outer edge and a smaller oppositely curved secondary section starting at an inner end of the main section and ending at the inner edge. A straight line L from the inner edge to the outer edge has a larger radial extension than tangential extension, and the inner edge has a distance D to the central axis A, thus leaving an open space near the central axis 25 through which the fluid may flow freely.All the vanes may sweep the same cylindrical shape with a cylindrical hollow when rotating around the central axis A.The straight line L from the inner edge to the outer edge may be parallel with the radial direction or at least within 15 degrees from the radial direction.30 A cross section of the curved main section may describe a cutout of 60 to 180 degrees of a circle, more preferable 110 – 130 degrees. 3495953A cross section of the secondary curved structure may describe a cutout of 30 to 90 degrees of a circle.The distance D from the inner edges to the central axis A may be between 1/5 and ½ of a radius R of the cylinder swept more preferable 1/3 of the radius R.5 The curved secondary section may cover between 1/10 and ½ of the radial distance covered by the curved main section.A tangent Tm of the main curved section and a tangent Ts of the secondary curved section may coincide where the two sections meet.The rotor may comprise a plurality of guiding vane shaped as a tubular sector of 30 10 to 90 degrees extending between the first and second frame, positioned with an outer guide edge at the outer side of the cylinder swept and equidistant between each two vanes. In other words: between any two vanes there may be a guiding vane.A line Lg between the outer guide edge and an inner guide edge of the guide vane may have an angle between 0 and 30 degrees with the radial direction.15 The length of Lg between the outer guide edge and an inner guide edge of the guide vane may be between 1/10 and ½ of a length of the straight line L.The first and second frames may comprise continuous plates sweeping a circle larger than the cylinder swept, thus preventing water from escaping from the vanes.In a second aspect of the invention it is described a system for extracting energy from 20 flowing water using a rotor as described above. The system may comprise:An anchor structure for holding the rotor in a rotational manner.A first axle fastened to one of the first and second frames.A generator connected to the axle and the anchor structure for extracting electric energy from the rotational movement between the axle and the anchor structure. 25 The horizontal axis of the rotor may be vertical.The system may further comprise a second axle fastened to the other of the first and second frame and the anchor structure comprises two arms each holding the respective axels in a rotational manner, wherein the central axis A of the of the rotor is horizontal. 3495954Short description of the figuresIn order to improve the understanding of the invention, a set of figures have been attached where the same feature has the same reference in the different figures.5 Fig. 1 shows an embodiment of the rotor in a top view (assuming the rotor is standing upright).Fig. 2 shows the embodiment of fig.1 of the rotor in a side view.Fig. 3 shows different variations of cross-sections of vanes.Fig. 4 shows an embodiment of a S-shaped vane.10 Fig. 5 shows an embodiment of a S-shaped vane and how the angles are defined.Fig. 6 shows an example of a region swept by the vanes as they rotate.Fig. 7 shows a rotor vertically mounted on an anchor structure using one axel.Fig. 8 shows an embodiment of a rotor having a frame extension.Fig. 9 shows a rotor horizontally mounted with two rotor arms and two axels.15 Fig. 10 shows an embodiment of a horizontal rotor for mounting on a site with a flow having a constant direction such as a river.Fig. 11 shows the flow through the rotor and a high pressure region indicated by the dotted line outside the rotor.20 Detailed descriptionA rotor 1 for extracting energy from flowing fluid is described below. Fig. 1 shows the rotor 1 from above with atop or end frame removed and fig.2 shows the rotor in a side view. The rotor is primarily designed for operating in flowing water, but can also be used in flowing air. The rotor comprises a first frame 2 and second frame 3.25 Preferably the two frames are circular plates extending a distance outside the rotor itself, but the primary function of the frames are to hold a plurality of vanes in a fixed position. Secondly the frames should prevent the water from escaping from the vanes. The rotor comprises at least three vanes 4 positioned equidistant from each other in a 3495955circle around a central axis A of the rotor. Each vane 4 extends continuously between the first and second frame 2, 3 and further comprises an outer vane edge 5 and an inner vane edge 6. Here ‘outer’ and ‘inner’ refer to the radial distance from the central axis A indicated in fig. 6. The vane edges will normally describe a straight vertical 5 line, but some curvature may also function well.Assuming the central axis A is vertical, a cross-section of the vane has a S-shape comprising a curved main section 7 starting from the outer edge 5 and a curved secondary section 8 starting at an inner end 17 of the main section 7 and ending at the inner edge 6 as seen in fig. 1 and fig. 4. In other words, a cross-section of the 10 vanes in parallel with the frames has a S-shape.As indicated in the embodiment shown in fig. 1, a straight line L from the inner edge to the outer leading edge has a larger radial extension than tangential extension. Preferably, a straight line Lm, extending between the outer vane edge 5 and the inner end 17 of the main section 5, shown in fig. 11, is substantially directed in a radial 15 direction /- 15 degrees.The inner vane edge 6 have a distance D to the central axis, thus leaving an open space near the central axis through which the fluid may flow freely as shown in fig.11.The purpose of the main curved main section 7 is to function as an ordinary rotor 20 from prior art (i.e. a Pelton turbine) and the purpose of the secondary section 8 is to reduce the turbulence inside and in the near vicinity of the rotor. Fig. 11 shows a dotted region with high pressure and a lot of turbulence. Experiments show reduced pressure and less turbulence inside the rotor and in the dotted region with the secondary section mounted to the inner end 17 of the main section 7.25 The exact reason for reduced turbulence and pressure in the mentioned region is not totally understood, but we suspect that due to the Coanda-effect acting on the fluid/water flowing past the secondary section 8 the water is to a larger degree redirected instead of increasing the turbulence especially in the region indicated with arrows in fig. 11.30 In an embodiment all the vanes 4 sweeps the same cylindrical shape with a cylindrical hollow. 3495956The vanes 4 may have many variations of their shapes as indicated in fig. 3. In an embodiment a cross section of the curved main section 7 describes a cutout sector of 60 to 180 degrees of a circle, more preferable the cutout of the circle is 110 – 130 degrees as indicated in fig. 5. Furthermore, a cross section of the secondary curved 5 structure may describe a cutout sector of 20 to 90 degrees of a circle. Preferably, the cutout sector is between 30 and 45 degrees. Other shapes are also possible. The curvature of the curved section may vary with radial distance.The central region of the rotor is free space as indicated in fig. 1, 6 and 9. The free space allows the water to flow freely through the central region of the rotor at a 10 distance D from the inner edges 6 of the vanes 4 to the central axis A as indicated in fig. 11, which causes the mentioned free space. The distance D is between 1/5 and 2/3 of a radius R of the cylinder swept. Preferably, the distance D is between 1/3 and ½ of the radius R.The oppositely curved secondary section 8 is significantly smaller in size than the 15 main section wherein the curved secondary section 8 covers between 1/10 and ½ of the radial distance covered by the curved main section 7. The curvature of the curved secondary section is fairly similar to the main section. Preferably, a tangent Tm of the main curved section and a tangent Ts of the secondary curved section are the same where the two sections meet as indicated in fig. 4. A smooth transition from the 20 curvature of the main section 7 to the oppositely directed curvature of the secondary section 8 is important to make the most of the Coanda-effect teaching us that a fluid flow will stick to a curved surface due to pressure effects.In an embodiment the rotor 1 comprises a number of guiding vanes 9 positioned equidistant between every two vanes 4 as shown in fig. 1 and 11. The guiding vane 9 25 is shaped as a tubular sector of 20 to 90 degrees extending between the first and second frame 2, 3, positioned with an outer guide edge 10 at the same radial distance from the central axis A as the outer edge of the vane 9 outer side of the cylinder swept and. The purpose of the guiding vane is to guide the water flow towards the center of the rotor and make the rotational forces more stable and also avoid congestion of the 30 water when flowing into the rotor. 3495957As indicated in fig. 11 a line Lg between the outer guide edge 10 and an inner guide edge 11 has an angle between 0 and 30 degrees with the radial direction. Preferably the length of the line Lg is between 1/10 and ½ of the length of the straight line L. In an embodiment of the rotor the first and second frames 2, 3 may be constituted by 5 continuous frame plates 2, 3 sweeping a circle larger than the cylinder swept, thus preventing water from escaping from the vanes. As shown in fig. 8, the first and second frame 2, 3 may also comprise a circular frame extension 16 directed away from the rotor 1 for directing more water into the rotor. The frame extension 16 may be rotationally fixed to the ground or rotating together with the rotor.10 It is also described a system for extracting energy from flowing water using a rotor as described above. The system comprises an anchor structure 13 for holding the rotor in a rotational manner. This can be achieved by holding the rotor in one end or both ends. Typically, the rotor 1 would have vertical central axis A if held in one end as shown in fig. 7 and 8 and typically have a horizontal axis if held in both ends as 15 indicated in fig 9 and 10. In this context ‘end’ or ‘ends’ is the same as the first and second frame 2, 3.The system comprises a first axle 12 fastened to one of the first and second frames 2, 3 and a generator 14 connected to the axle 12 and the anchor structure 13 for extracting electric energy from the rotational movement of the axle being held in a 20 rotational manner by the anchor structure. In such a configuration the central axis A of the rotor 1 would be vertical, although a horizontal axis is conceivable if the rotor 1 has close to zero buoyancy.In an embodiment shown in fig. 9 and 10 the system further comprises a second axle 15 fastened to the other of the first and second frame 2, 3 and the anchor structure 25 comprises two rotor arms 17 each holding the respective axels in a rotational manner, wherein the central axis A of the of the rotor (1) is horizontal.Fig. 10 shows a rotor mounted horizontally having a guiding shape 18 upstream from the rotor directing the flow of water towards the upper side of the rotor. The guiding shape 18 comprises a guiding slope 19 starting from a distance below a lower side of 30 the rotor and extending upwards and towards the rotor, wherein the guiding slope ends at an upper guiding edge 20 positioned near a vertical line touching the upstream side of the rotor and near a vertical line slightly above the lower side of the rotor as 3495958indicated by two dotted lines in fig. 10. Preferably the upper guiding edge 20 extends over the entire length of the rotor. Further downstream from the upper edge 20 the guiding shape 18 drops steeply towards the bottom. In one embodiment the rotor arms 17 are mounted with an upward bias, i.e. in the form of a spring.5References1 Rotor2 First frame3 Second frame10 4 Vane5 Outer vane edge6 Inner vane edge7 Oppositely curved main section8 Curved secondary section15 9 Guiding vane10 Outer guide edge11 inner guide edge12 First axle13 Anchor structure20 14 Generator15 Second axle16 Frame extension17 Rotor arms18 Guiding shape25 19 Guiding slope20 Upper edgeA Central axis of the rotor 3495959L Straight line between the outer and inner edgeLg straight line between the outer and inner guide edge R Radius of cylinder sweptTm Tangent of main section5 Ts Tangent of secondary section
Claims
34959510PATENTKRAV1. A rotor (1) for extracting energy from flowing fluid comprising:a first frame (2) and second frame (3),5 at least three vanes (4) positioned equidistant in a circle around a central axis A of the rotor, wherein each vane (4) comprises:an outer edge (5),an inner edge (6),wherein the vane (4) extends between the first and second frame (2, 3), 10 wherein a horizontal cross-section of the vane has a S-shape comprising:a curved main section (7) starting from the outer edge (5),a smaller oppositely curved secondary section (8) starting at an inner end of the main section and ending at the inner edge (6), and wherein a straight line L from the inner edge to the outer edge has a 15 larger radial extension than tangential extension, andwherein the inner edge (6) has a distance D to the central axis (A), thus leaving an open space near the central axis through which the fluid may flow freely.2. Rotor (1) according to claim 1, wherein all the vanes sweeps the same cylindrical 20 shape with a cylindrical hollow.3. Rotor (1) according to claim 1 or 2, wherein the straight line L is parallel with the radial direction.4. Rotor (1) according to any of the preceding claims, wherein a cross section of the curved main section (7) describes a cutout of 60 to 180 degrees of a circle, more 25 preferable 110 – 130 degrees.5. Rotor (1) according to any of the preceding claims, wherein a cross section of the secondary curved structure describes a cutout of 30 to 90 degrees of a circle. 6. Rotor (1) according to any of the preceding claims 2-5 when dependent on claim 2, wherein the distance D from the inner edges (6) to the central axis A is between 30 1/5 and ½ of a radius R of the cylinder swept, more preferable 1/3 of the radius R 349595117. Rotor (1) according to any of the preceding claims, wherein the curved secondary section (8) covers between 1/10 and ½ of the radial distance covered by the curved main section (7).8. Rotor (1) according to any of the preceding claims, wherein a tangent Tm of the 5 main curved section and a tangent Ts of the secondary curved section coincide where the two sections meet.9. Rotor (1) according to any of the preceding claims 2-8, comprising a guiding vane (9) shaped as a tubular sector of 30 to 90 degrees extending between the first and second frame (2, 3), positioned with an outer guide edge (10) at an outer side of 10 the cylinder swept and equidistant between two vanes (4).10. Rotor according to claim 9, wherein a line Lg between the outer guide edge and an inner guide edge (11) has an angle between 0 and 30 degrees with the radial direction.11. Rotor according to claim 9 or 10, wherein the length of Lg is between 1/10 and ½ 15 of a length of the straight line L.12. Rotor according to any of the preceding claims, wherein the first and second frames (2, 3) comprises continuous plates sweeping a circle larger than the cylinder swept, thus preventing water from escaping from the vanes.13. System for extracting energy from flowing water using a rotor according to claim 20 1-12, the system comprising:An anchor structure (13) for holding the rotor in a rotational manner A first axle (12) fastened to one of the first and second framesA generator (14) connected to the axle (12) and the anchor structure (13) for extracting electric energy from the rotational movement between the axle and the 25 anchor structure.14. System according to claim 13, wherein the central axis (A) of the rotor (1) is vertical.15. System according claim 13, wherein the system further comprises a second axle (15) fastened to the other of the first and second frame (2, 3) and the anchor 30 structure comprises two arms each holding the respective axels in a rotational manner, wherein the central axis A of the of the rotor (1) is horizontal.34959512Patentkrav1. En rotor (1) for å utvinne energi fra en strømmende fluide omfattende:en første ramme (2) og andre ramme (3),minst tre blad (4) plassert like langt fra hverandre i en sirkel rundt en sentral akse (A) av 5  rotoren, hvor hvert blad (4) omfatter:en ytre kant (5),en indre kant (6),hvor bladet (4) strekker seg mellom den første og andre rammen (2, 3),karakterisert ved at et horisontalt tverrsnitt av bladet har en S-form som omfatter:10  en buet hovedseksjon (7) som starter fra ytterkanten (5),en mindre motsatt buet sekundærseksjon (8) som starter ved en indre ende av hovedseksjonen og slutter ved den indre kanten (6), oghvor en rett linje L fra den indre kanten til den ytre kanten har en større radiell utstrekning enn tangentiell utstrekning, og15  hvor den indre kanten (6) har en avstand D til den sentrale aksen (A), og dermed etterlater et åpent rom nær den sentrale aksen som fluidet kan strømme fritt gjennom.2. Rotor (1) ifølge krav 1, karakterisert ved at alle bladene sveiper den samme sylindriske formen med et sylindrisk hulrom.20  3. Rotor (1) ifølge krav 1 eller 2, hvor den rette linjen L er parallell med den radielle retningen.4. Rotor (1) ifølge hvilket som helst av de foregående kravene, hvor et tverrsnitt av den buede hovedseksjonen (7) beskriver en utskjæring på 60 til 180 grader av en sirkel, mer foretrukket 110 - 130 grader.25  5. Rotor (1) ifølge hvilket som helst av de foregående kravene, hvor et tverrsnitt av den buede sekundærseksjonen beskriver en utskjæring på 30 til 90 grader av en sirkel.349595136. Rotor (1) ifølge hvilket som helst av de foregående kravene 2-5 når avhengig av krav 2, hvor avstanden D fra de indre kantene (6) til den sentrale aksen A er mellom 1/5 og ½ av en radius R av sylinderen som sveipes, mer foretrukket 1/3 av radien R7. Rotor (1) ifølge hvilket som helst av de foregående kravene, hvor den buede 5  sekundærseksjonen (8) dekker mellom 1/10 og ½ av den radielle avstanden som dekkes av den buede hovedseksjonen (7).8. Rotor (1) ifølge hvilket som helst av de foregående kravene, hvor en tangent Tm til den buede hovedseksjonen og en tangent Ts til den buede sekundærseksjonen faller sammen der de to seksjonene møtes.10  9. Rotor (1) ifølge hvilket som helst av de foregående kravene 2-8, omfattende et føringsblad (9) formet som en rørformet sektor på 30 til 90 grader som strekker seg mellom den første og andre rammen (2, 3), posisjonert med en ytre føringskant (10) ved en ytre side av sylinderen som sveipes og i lik avstand mellom to blader (4).10. Rotor ifølge krav 9, hvor en linje Lg mellom den ytre føringskanten (10) og en indre 15  føringskant (11) har en vinkel mellom 0 og 30 grader med den radielle retningen.11. Rotor ifølge krav 9 eller 10, hvor lengden av linjen Lg er mellom 1/10 og ½ av lengden av den rette linjen L.12. Rotor ifølge hvilket som helst av de foregående kravene, hvor den første og andre rammen (2, 3) omfatter kontinuerlige plater som sveiper en sirkel som er større enn 20  sylinderen som er sveipet, og dermed hindrer vann fra å unnslippe fra bladene.13. System for å utvinne energi fra strømmende vann ved bruk av en rotor ifølge krav 1-12, hvor systemet omfatter:en ankerkonstruksjon (13) for å holde rotoren på en roterende måteen første aksel (12) festet til en av den første og andre rammen25  en generator (14) koblet til akselen (12) og ankerstrukturen (13) for å ekstrahere elektrisk energi fra rotasjonsbevegelsen mellom akselen og ankerstrukturen.14. System ifølge krav 13, hvor rotorens (1) sentrale akse (A) er vertikal.15. System ifølge krav 13, hvor systemet videre omfatter en andre aksel (15) festet til den andre av den første og andre rammen (2, 3) og ankerstrukturen omfatter to armer som hver34959514holder de respektive akslene på en rotasjonsmåte, hvor den sentrale aksen (A) til rotoren (1) er horisontal.
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No priority

Patent classes

IPC classesF03D 3/06F03D 3/00CPC classesF03D 3/061F03D 3/005

Citations

WO 2022099353 A1 (A1)WO 2018193155 A1 (A1)CN 103174585 A (A)

Applicants, owners and inventors

Owners
Oceanenvi AS
Bøylestadveien 365 4820 FROLAND NO (FROLAND Municipality, Agder county)Org. number: 924788283Inventors
Dag Walther Ammerud
Lyngrabben 4 3292 STAVERN NO (LARVIK Municipality, Vestfold county)

Agent

ACAPO ONSAGERS AS
ACAPO ONSAGERS AS

Org. number: 932214636

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Edvard Griegs vei 1 5059 BERGEN NO (BERGEN Municipality, Vestland county)
Org. number: 932214636
Reference: P29727NO00

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