NO151479B - Aggregate for Exploitation of Movement Energy. - Google Patents
Aggregate for Exploitation of Movement Energy. Download PDFInfo
- Publication number
- NO151479B NO151479B NO773180A NO773180A NO151479B NO 151479 B NO151479 B NO 151479B NO 773180 A NO773180 A NO 773180A NO 773180 A NO773180 A NO 773180A NO 151479 B NO151479 B NO 151479B
- Authority
- NO
- Norway
- Prior art keywords
- impellers
- pipe
- aggregate
- water
- liquid column
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 11
- 230000001133 acceleration Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/16—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem"
- F03B13/18—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore
- F03B13/1805—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem
- F03B13/1825—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for 360° rotation
- F03B13/183—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the relative movement between a wave-operated member, i.e. a "wom" and another member, i.e. a reaction member or "rem" where the other member, i.e. rem is fixed, at least at one point, with respect to the sea bed or shore and the wom is hinged to the rem for 360° rotation of a turbine-like wom
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
- F03B13/22—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy using the flow of water resulting from wave movements to drive a motor or turbine
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Materials For Medical Uses (AREA)
Description
Foreliggende oppfinnelse vedrører et aggregat for utnyttelse av bevegelsesenergi som er bundet i vannets bølgebevegelse eller dønninger. Et slikt aggregat omfatter i det minste en flyteenhet som befinner seg ved vannflaten og som er forankret på en slik måte at den kan bevege seg fritt, uten begrens-ning i forbindelse med bølgebevegelsen og stort sett i vertikal retning. Aggregatet har i det minste en med flyteenheten forbundet, bevegelseshemmende og energiopptagende anordning, som består av propeller eller løpehjul. The present invention relates to an aggregate for the utilization of movement energy which is tied up in the water's wave motion or swells. Such an aggregate comprises at least one floating unit which is located at the surface of the water and which is anchored in such a way that it can move freely, without restriction in connection with the wave movement and largely in a vertical direction. The unit has at least one motion-restricting and energy-absorbing device connected to the floating unit, which consists of propellers or impellers.
Fra dansk patent nr. 31172 er det kjent et aggregat av denne type hvor den energiopptagende anordning kan beveges i en beholder som er fast forankret med sjøbunnen. Denne type anlegg for utnyttelse av den bevegelsesenergi som er bundet i vannets bølgebevegelse gir på grunn av de forholdsvis lave strømningshastigheter en lav effekt pr. overflateenhet av det energiopptagende system. Hvis større energimengder skal kunne utnyttes, krever anlegget store dimensjoner og dermed sammenhengende høye investeringsomkostninger samt blir van-skelig å betjene. An aggregate of this type is known from Danish patent no. 31172 where the energy-absorbing device can be moved in a container which is firmly anchored to the seabed. This type of facility for utilizing the kinetic energy that is tied up in the wave motion of the water gives, due to the relatively low flow speeds, a low effect per surface unit of the energy-absorbing system. If larger amounts of energy are to be utilised, the plant requires large dimensions and thus associated high investment costs and becomes difficult to operate.
Fra US patent nr. 3 912 938 er det kjent et aggregat hvor flyteenheten er forankret til sjøbunnen slik at den ikke kan bevege seg i vertikal retning. Flyteenheten er forsynt med en rekke korte, vertikale rør i hvis nedkant det er anordnet en turbin som bølgene kan passere. Også her vil forholdsvis lave strømningshastigheter gi lav effekt pr. overflateenhet a<y>det energiopptagende system. From US patent no. 3 912 938 an aggregate is known where the floating unit is anchored to the seabed so that it cannot move in a vertical direction. The floating unit is equipped with a series of short, vertical tubes at the bottom edge of which is arranged a turbine through which the waves can pass. Here, too, relatively low flow velocities will give a low effect per surface unit a<y>the energy-absorbing system.
En ikke ubetydelig forbedring av effekten pr. overflateenhet kan oppnås dersom propellsystemet forsynes med tilførsels- A not insignificant improvement in the effect per surface unit can be achieved if the propeller system is supplied with supply
og utløpstrakter av venturitype som gir hastighetsøkning i propelltverrsnittet, slik det f.eks. er vist i svensk utleg-ningsskrift nr. 373 639. En slik anordning kan gi effektøk-ninger på fem å ti ganger, men effekten pr. overflateenhet er imidlertid stadig for lav i forhold til omkostningene for kon-struksjonen til å kunne anvendes annet enn i spesielle til-feller hvor investerings- og driftsomkostningene er av mindre betydning. and outlet funnels of the venturi type that give an increase in speed in the propeller cross-section, as e.g. is shown in Swedish explanatory document no. 373 639. Such a device can provide power increases of five to ten times, but the power per surface unit is, however, still too low in relation to the costs for the construction to be used other than in special cases where the investment and operating costs are of minor importance.
Foreliggende oppfinnelse har til formål å tilveiebringe et aggregat for utnyttelse av energi, som er bundet i vannets bølge-bevegelse, ved hvilket oppnås en betydelig trykkforskjell i den del av anlegget, hvor propellene ligger og dermed en kraftig akselerasjon av vannstrømmen gjennom og forbi propellene. The purpose of the present invention is to provide an aggregate for the utilization of energy, which is bound in the wave motion of the water, whereby a significant pressure difference is achieved in the part of the plant where the propellers are located and thus a strong acceleration of the water flow through and past the propellers.
Det nye og karakteristiske for anlegget ifølge oppfinnelsen The new and characteristic feature of the plant according to the invention
er at løpehjulene er innbygget i et i begge ender åpent, og hovedsakelig vertikalt, langstrakt rør som er koblet til flyteenheten, og som følger med denne i vannets bølgebevegelse, idet det rundt løpehjulene tilveiebringes en trykkforskjell ved at det ved rørets bevegelse oppad oppstår et overtrykk under den del av væskesøylen som ligger ovenfor løpehjulene og et undertrykk ovenfor den del av væskesøylen som ligger under løpehjulene, og ved rørets bevegelse nedad oppstår et overtrykk ovenfor den del av væskesøylen som ligger under lø-pehjulene og et undertrykk under den del av væskesøylen som ligger ovenfor løpehjulene. is that the impellers are built into an open at both ends, and mainly vertical, elongated tube which is connected to the floating unit, and which accompanies it in the wave movement of the water, as a pressure difference is created around the impellers by the upward movement of the tube creating an overpressure under the part of the liquid column that lies above the impellers and a negative pressure above the part of the liquid column that lies below the impellers, and when the tube moves downwards, an overpressure occurs above the part of the liquid column that lies below the impellers and a negative pressure under the part of the liquid column that located above the impellers.
Røret vil utføre en i vertikal retning oscillerende bevegelse. Den innesluttede væskesøyle medbringes derved på grunn av den motstand mot gjennomstrømning som løpehjul og eventuelt anordnet fortrengning av rørarealet volder. Hvis f.eks. røret med fastsittende turbinenhet akselereres oppad, oppstår et overtrykk under den væskesøyle som ligger ovenfor løpehjulet og et undertrykk ovenfor den væskesøyle som ligger under løpe-hjulet. Summen av disse trykk gir drivkraften til løpehjulet. The tube will perform an oscillating movement in the vertical direction. The enclosed column of liquid is thereby carried along due to the resistance to flow caused by the impeller and possibly arranged displacement of the pipe area. If e.g. the pipe with a fixed turbine unit is accelerated upwards, an overpressure occurs under the column of liquid above the impeller and a negative pressure above the column of liquid below the impeller. The sum of these pressures provides the driving force for the impeller.
Trykkforskjellen A p blir The pressure difference A p becomes
A p = S ■ 1 • a A p = S ■ 1 • a
hvor = vannets densitet. where = density of water.
1 = rørets totale lengde 1 = the total length of the pipe
a = vannsøylens akselerasjon a = acceleration of the water column
For en bølge med høyde 2 m blir den maksimale akselerasjon ca. For a wave with a height of 2 m, the maximum acceleration is approx.
1 m/s 2. Et 25 m langt rør bevirker da en trykkforskjell på 1 m/s 2. A 25 m long pipe then causes a pressure difference of
25 000 N/m 2. Dette tilsvarer et vannturbinanlegg med 2,5 m fallhøyde. Til. sammenligning kan nevnes at et løpehjul som på lignende måte oscilleres opp og ned i åpent vann bare kan utnytte det dynamiske trykk som for den antatte bølgehøyde 2 m blir maksimalt ca. 500 N/m 2. Dette tilsvarer en fallhøyde på bare 0,05 m. 25,000 N/m 2. This corresponds to a water turbine plant with a drop height of 2.5 m. To. comparison, it can be mentioned that an impeller that oscillates up and down in open water in a similar way can only utilize the dynamic pressure, which for the assumed wave height of 2 m is a maximum of approx. 500 N/m 2. This corresponds to a drop height of just 0.05 m.
Man finner således at innføringen av et rør med rimelige dimensjoner kan øke effektuttaket for en gitt turbinstørrelse 50 ggr. Anderledes uttrykt kan i den foretatte sammenligning turbindiameteren reduseres til 1/7 for like stor produsert effekt. It is thus found that the introduction of a pipe with reasonable dimensions can increase the power output for a given turbine size 50 times. Expressed differently, in the comparison made, the turbine diameter can be reduced to 1/7 for the same amount of produced power.
Ved at propellene ved anlegget ifølge oppfinnelsen nå kan arbeide med høyere turtall enn ved hittil kjente anlegg av dette slag, kan de gis mindre dimensjoner, hvilket letter den konstruktive utformning av anlegget samtidig som konstruk-sjonsomkostningene for anlegget kan reduseres. By the fact that the propellers in the plant according to the invention can now work at a higher speed than in previously known plants of this type, they can be given smaller dimensions, which facilitates the constructive design of the plant at the same time as the construction costs for the plant can be reduced.
Oppfinnelsen skal beskrives i detalj i det etterfølgende under henvisning til tegningene hvor utførelsesformer av oppfinnelsen er skjematisk vist som eksempler. Fig. 1 viser i perspektiv et aggregat ifølge oppfinnelsen med flyteenhet og to rør. The invention shall be described in detail in what follows with reference to the drawings where embodiments of the invention are schematically shown as examples. Fig. 1 shows in perspective an aggregate according to the invention with a floating unit and two pipes.
Fig. 2 viser et lengdesnitt av aggregatet i fig. 1. Fig. 2 shows a longitudinal section of the aggregate in fig. 1.
Fig. 3 viser et lengdesnitt av et parti av en utførelsesform av et rør ved et aggregat ifølge oppfinnelsen. Fig. 4 viser et lengdesnitt av et parti av en ytterligere ut-førelsesf orm av et rør ved et aggregat ifølge oppfinnelsen. Fig. 3 shows a longitudinal section of a part of an embodiment of a pipe at an aggregate according to the invention. Fig. 4 shows a longitudinal section of a part of a further embodiment of a pipe in an aggregate according to the invention.
Det i fig. 1 viste aggregat har som hovedbestanddeler to rør That in fig. The unit shown in 1 has two pipes as its main components
1 og en flyteenhet 2, hvilke er montert på en ramme 3, som er forankret i bunnen ved hjelp av en fortøyning 4. Flyteen-hetens 2 bæreevne er således dimensjonert og rørenes 1 lengde er således avpasset at rørenes 1 øvre ender 5 ligger under vannflaten 6. 1 and a floating unit 2, which are mounted on a frame 3, which is anchored to the bottom by means of a mooring 4. The carrying capacity of the floating unit 2 is so dimensioned and the length of the pipes 1 is adjusted so that the upper ends 5 of the pipes 1 lie below the water surface 6.
I det i fig. 2 viste snitt av aggregatet ifølge fig. 1 vises en anordning 7 med propeller eller løpehjul 8 samt generator In that in fig. 2 showed a section of the aggregate according to fig. 1 shows a device 7 with a propeller or impeller 8 and a generator
9 som er montert inne i hvert av rørene 1. Anordningene 7 9 which is mounted inside each of the pipes 1. The devices 7
er montert inne i en struping 10 og i rørenes 1 øvre ender slik at de skal være lett tilgjengelige for vedlikehold og re-parasjon. Dessuten har propellene 8 i de to anordninger mot-satte rotasjonsretninger for å hindre at hele aggregatet roterer i vannet rundt sin vertikale akse. are mounted inside a throat 10 and in the upper ends of the pipes 1 so that they should be easily accessible for maintenance and repair. In addition, the propellers 8 in the two devices have opposite directions of rotation to prevent the entire assembly from rotating in the water around its vertical axis.
Det i fig. 3 og 4 viste rør 11 resp. 21 er sirkulærsylindrisk og har vesentlig lengde i forhold til diameteren. Inne i røret 11, 21 og med sitt sentrum på rørets akse er det anordnet et turbin- eller løpehjul 12, 22 hvis rotasjonsakse fal-ler sammen med rørets akse. Røret 11, 21 kan således sies å danne et i begge ender åpent turbinhus. Turbin- eller løpe-hjulet er forsynt med mantler 13, 23 og 13', 23' som strekker seg på begge sider av dette og som er utformet for struping av vannstrømmen gjennom røret 11, 21. Ved utførelsesformen ifølge fig. 3 er begge strupemantlene 13, 13' fast forbundet med røret 11 og danner samtidig, en kapsling for en eller flere elektriske generatorer 14 som er koblet til turbinhjulets aksel 15 som roterer i lagre 16 og 17. Ved utførelsesformen ifølge fig. 4 er den nedre strupemantel 23 fast forbundet med røret 21 og inneslutter lagre 26 for turbinakselens 25 nedre ende. Den øvre strupemantel 23' er enten fast eller bevegelig forbundet med turbinakselen 25 via lageret 27 og roterer med akselen eller er stasjonær. Den elektriske generator, som er koblet til akselen 25, er i dette tilfelle plassert i flyteenheten ved vannflaten og er således ikke vist på tegningene. Turbin- eller løpehjulet 12, 22 er konstruert slik at dets blad omstilles av vannet når dette skifter bevegelses-retning i forhold til løpehjulet. Dette er antydet ved hjelp av den strekede markering 18', 28' på tegningene. That in fig. 3 and 4 showed pipe 11 respectively. 21 is circular-cylindrical and has a significant length in relation to the diameter. Inside the pipe 11, 21 and with its center on the pipe's axis, there is arranged a turbine or impeller 12, 22 whose axis of rotation coincides with the pipe's axis. The pipe 11, 21 can thus be said to form a turbine housing open at both ends. The turbine or impeller is provided with casings 13, 23 and 13', 23' which extend on both sides thereof and which are designed to throttle the flow of water through the pipe 11, 21. In the embodiment according to fig. 3, both throat jackets 13, 13' are firmly connected to the pipe 11 and at the same time form an enclosure for one or more electric generators 14 which are connected to the turbine wheel shaft 15 which rotates in bearings 16 and 17. In the embodiment according to fig. 4, the lower throat casing 23 is firmly connected to the pipe 21 and contains bearings 26 for the lower end of the turbine shaft 25. The upper throat casing 23' is either fixed or movable connected to the turbine shaft 25 via the bearing 27 and rotates with the shaft or is stationary. The electric generator, which is connected to the shaft 25, is in this case located in the floating unit at the water surface and is thus not shown in the drawings. The turbine or impeller 12, 22 is constructed so that its blade is adjusted by the water when it changes direction of movement in relation to the impeller. This is indicated by means of the dashed markings 18', 28' in the drawings.
Claims (5)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7610241 | 1976-09-16 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO773180L NO773180L (en) | 1978-03-17 |
| NO151479B true NO151479B (en) | 1985-01-02 |
| NO151479C NO151479C (en) | 1985-04-17 |
Family
ID=20328884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO773180A NO151479C (en) | 1976-09-16 | 1977-09-15 | Aggregate for Exploitation of Movement Energy |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS53134133A (en) |
| AU (1) | AU515443B2 (en) |
| DE (1) | DE2740872A1 (en) |
| FR (1) | FR2365039A1 (en) |
| GB (1) | GB1587433A (en) |
| IE (1) | IE45802B1 (en) |
| IN (1) | IN147122B (en) |
| NO (1) | NO151479C (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1574379A (en) * | 1977-08-24 | 1980-09-03 | English Electric Co Ltd | Turbines and like rotary machines |
| SE423431B (en) * | 1978-08-16 | 1982-05-03 | Sven Anders Noren | AGRICULTURAL RECOVERY OF CHAMBLE ENERGY INCLUDED IN THE WATERS |
| JPS5912636Y2 (en) * | 1979-04-19 | 1984-04-16 | 日新電機株式会社 | Flicker meter calibration power supply |
| WO1983000889A1 (en) * | 1981-09-04 | 1983-03-17 | William Arnold Fleay | Apparatus for extracting power from wave motion |
| DE3508780A1 (en) * | 1985-03-12 | 1986-09-18 | Wolf Dipl.-Ing. Klemm (FH), 8023 Pullach | Device for obtaining useful energy by utilising the vertical lift of water waves |
| FR2580337A1 (en) * | 1985-04-12 | 1986-10-17 | Guiffray Michel | Device for producing electrical energy from the energy of sea waves |
| FR2606835B1 (en) * | 1986-11-17 | 1991-04-19 | Onde Marcel | INSTALLATION FOR TRANSFORMING CINETIC ENERGY OF WAVES INTO MECHANICAL ENERGY |
| DE3852884D1 (en) * | 1988-05-04 | 1995-03-09 | Marcel Onde | DEVICE FOR UTILIZING THE SEAWAVE ENERGY. |
| NL1005542C2 (en) | 1997-03-14 | 1998-09-15 | Zakaria Khalil Doleh | Device for the conversion of energy from the vertical movement of sea water. |
| GB0010033D0 (en) * | 2000-04-26 | 2000-06-14 | Zaczek M P | Renewable energy wave machine |
| EA201070128A1 (en) * | 2007-07-11 | 2010-08-30 | Райан Стилберг | DEEP-WATER SYSTEM AND DEVICE FOR GENERATION OF ELECTRIC ENERGY |
| US20100283248A1 (en) | 2009-02-20 | 2010-11-11 | Moffat Brian L | Venturi based ocean wave energy conversion system |
| US8925313B2 (en) | 2008-02-22 | 2015-01-06 | Brian Lee Moffat | Wave energy conversion apparatus |
| JP5738269B2 (en) * | 2009-03-27 | 2015-06-24 | モファット，ブライアン，リー | Venturi pin wheel and ocean wave energy conversion system |
| ES2395688B1 (en) * | 2011-08-11 | 2014-01-17 | Sendekia Arquitectura E Ingeniería Sostenible, S. L. | TILTING BLADES HYDRAULIC TURBINE FOR TWO-WAY USE OF FLOWS. |
| SE539972C2 (en) * | 2015-06-08 | 2018-02-13 | W4P Waves4Power Ab | Wave energy converter with differential cylinder |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE373639B (en) * | 1973-06-18 | 1975-02-10 | M W Gustafson | DEVICE FOR UTILIZING ENERGY BOUND IN THE WATER MOVEMENT OR SEWING |
| US3870893A (en) * | 1973-10-15 | 1975-03-11 | Henry A Mattera | Wave operated power plant |
| DE2507330C3 (en) * | 1974-02-20 | 1981-11-26 | Amancio S. Dr. Manila Donato | Method and device for converting the energy of the ocean wave movement into useful energy |
-
1977
- 1977-09-09 GB GB37686/77A patent/GB1587433A/en not_active Expired
- 1977-09-10 DE DE19772740872 patent/DE2740872A1/en not_active Ceased
- 1977-09-13 AU AU28737/77A patent/AU515443B2/en not_active Expired
- 1977-09-14 FR FR7727729A patent/FR2365039A1/en active Granted
- 1977-09-15 NO NO773180A patent/NO151479C/en unknown
- 1977-09-16 IE IE1902/77A patent/IE45802B1/en not_active IP Right Cessation
- 1977-09-16 JP JP11061477A patent/JPS53134133A/en active Pending
- 1977-09-19 IN IN241/DEL/77A patent/IN147122B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2740872A1 (en) | 1978-03-23 |
| AU515443B2 (en) | 1981-04-02 |
| JPS53134133A (en) | 1978-11-22 |
| NO773180L (en) | 1978-03-17 |
| IE45802B1 (en) | 1982-12-01 |
| IE45802L (en) | 1978-03-16 |
| FR2365039A1 (en) | 1978-04-14 |
| FR2365039B1 (en) | 1982-01-15 |
| AU2873777A (en) | 1979-03-22 |
| IN147122B (en) | 1979-11-17 |
| NO151479C (en) | 1985-04-17 |
| GB1587433A (en) | 1981-04-01 |
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