US20040071616A1 - Kinetic harvester - Google Patents
Kinetic harvester Download PDFInfo
- Publication number
- US20040071616A1 US20040071616A1 US10/614,566 US61456603A US2004071616A1 US 20040071616 A1 US20040071616 A1 US 20040071616A1 US 61456603 A US61456603 A US 61456603A US 2004071616 A1 US2004071616 A1 US 2004071616A1
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- US
- United States
- Prior art keywords
- panels
- harvester
- pair
- current
- shaft
- 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
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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
- F03B17/00—Other machines or engines
- F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
- F03B17/062—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction
- F03B17/065—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction the flow engaging parts having a cyclic movement relative to the rotor during its rotation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/40—Transmission of power
- F05B2260/402—Transmission of power through friction drives
- F05B2260/4021—Transmission of power through friction drives through belt drives
-
- 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
- Y02E10/20—Hydro energy
-
- 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
Definitions
- the present invention relates generally to power generation and, in one of its aspects, to power generation from moving liquid such as ocean water.
- the Kinetic Harvester is a simple, inexpensive, low tech device that is designed to tap the ocean's enormous kinetic energy that is inherent in tides and currents and waves and convert it to electrical energy. This kinetic energy is usually slow moving but very powerful. A three-mile per hour current has approximately fifteen pounds of lateral push per square foot. It is too slow moving to effectively turn a turbine so another approach is needed.
- the Kinetic harvester works by holding a large concave panel crosswise to the current. A surface twenty feet by twenty feet would have three tons of force against it. That force can be geared up enough to turn a good-sized generator at optimum speed.
- the basic Kinetic Harvester is a versatile device that can be tailored to many different environments. It can be employed in different mountings to take maximum advantage of any water movement. Because of its adaptability and varied size and appearance I have not shown any dimensions but I foresee the most common size as about forty feet across with panels twenty feet square.
- the Kinetic Harvester includes a central shaft connecting two large disks like wheels and an axle.
- Four long cylindrical arms radiate from the middle of the central shaft and end even with the edges of the disks.
- Four main braces connect the edges of the disks and the ends of the arms butt into them.
- a smaller secondary brace runs from the ends of the arms around the circumference of the structure.
- the secondary brace runs between the panels when they are closed and prevents them from both swinging the same way.
- Springs are mounted on the secondary braces where the panel frames close on them. The springs help to start the opening of the panels.
- This drawing shows the placement of the stops in relation to the panels.
- the Kinetic Harvester When the Kinetic Harvester is installed in a current the water pushes its way between the panels that have loose edges facing into it forcing them open. The material in the centers of the panels are pushed back into a concave shape that offers maximum resistance to the current. On the other side of the Harvester where the loose sides of the panels face away from the current the force of the water squeezes the panels together offering a minimum of resistance to the current. The difference in resistance turns the Harvester around its central shaft. As the Harvester rotates each set of panels opens and closes in turn as they come into the different positions relative to the current.
- the rotation of the Harvester can be transmitted to the generator in a number of ways.
- the generator can be up out of the water or in a sealed chamber. The power would be carried away through watertight cables.
- the Kinetic Harvester can be employed. There are many other ways.
- the Kinetic Harvester can be customized to suit the location. It can be made larger or smaller, wider or narrower. Several small ones lined up on a common central shaft could be deployed along a beach to tap the power of the surf. Giant Harvesters with panels of two thousand square feet can deployed in the Gulf Stream.
- the hinges on the panels would be replaced by an arrangement where the arms themselves would become the hinge-pins and the panels would fit on them like the hinges on the pins. All metal parts would be coated with a polymer coating to protect them from the seawater.
- FIG. 1 is a top perspective view of a basic support structure of the present invention, minus panels and stops;
- FIG. 2 is side view of a set of panels according to the present invention in an open position and in a closed position separated by a secondary brace according to the present invention
- FIG. 3 is a side view of the relationship of a panel, a disk and stops according to the present invention.
- FIG. 4 is a top view of the present invention with all panels in the closed position
- FIG. 5A is a front view of the present invention showing a pair of panels in the open position
- FIG. 5B is a side view of the present invention according to FIG. 5A;
- FIG. 6 is a top sectional view of the present invention in operation
- FIG. 7 is a top view of the present invention showing the transmission of power to an electrical generator according to the present invention.
- FIG. 8 is a top view of the present invention mounted on its side under a raft in accordance with the present invention.
- the Kinetic Harvester is a simple, inexpensive, low tech device that is designed to tap the ocean's enormous kinetic energy that is inherent in tides and currents and waves and convert it to electrical energy. This kinetic energy is usually slow moving but very powerful. A three-mile per hour current has approximately fifteen pounds of lateral push per square foot. It is too slow moving to effectively turn a turbine so another approach is needed.
- the Kinetic harvester works by holding a large concave panel crosswise to the current. A surface twenty feet by twenty feet would have three tons of force against it. That force can be geared up enough to turn a good-sized generator at optimum speed.
- the basic Kinetic Harvester is a versatile device that can be tailored to many different environments. It can be employed in different mountings to take maximum advantage of any water movement. Because of its adaptability and varied size and appearance I have not shown any dimensions but I foresee the most common size as about forty feet across with panels twenty feet square.
- a Kinetic Harvester according to the present invention, referred to generally by reference numeral 10 , includes a central shaft 12 connecting two large disks 14 and 16 like wheels and an axle.
- Four long cylindrical arms 18 , 20 , 22 and 24 radiate from the middle of the central shaft and end even with the edges of the disks.
- Four main braces 26 , 28 , 30 and 32 connect the edges of the disks and the ends of the arms butt into them.
- a smaller secondary brace 34 , 36 , 38 and 40 runs from the ends of the arms around the circumference of the structure.
- two large flat panels 42 and 44 are attached to the each arm so that they are able to open and close like a book.
- the secondary brace runs between the panels when they are closed and prevents them from both swinging the same way.
- Springs are mounted on the secondary braces where the panel frames close on them. The springs help to start the opening of the panels.
- hinges 50 and 52 could be spring loaded.
- FIG. 5 shows the placement of the stops in relation to the panels.
- the rotation of the Harvester can be transmitted to a generator 58 in a number of ways.
- the generator can be up out of the water or in a sealed chamber. The power would be carried away through watertight cables.
- the Kinetic Harvester can be employed is by securing it under a raft 60 and tethering it to the ocean floor by two cables 62 that are attached to the sides of the raft. This arrangement swings the Kinetic Harvester back and forth through the water as the raft rocks on the waves. It also takes power from the current going by.
- the Kinetic Harvester can be customized to suit the location. It can be made larger or smaller, wider or narrower. Several small ones lined up on a common central shaft could be deployed along a beach to tap the power of the surf. Giant Harvesters with panels of two thousand square feet can deployed in the Gulf Stream.
- the hinges on the panels would be replaced by an arrangement where the arms themselves would become the hinge-pins and the panels would fit on them like the hinges on the pins. All metal parts would be coated with a polymer coating to protect them from the seawater.
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- Engineering & Computer Science (AREA)
- Power Engineering (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)
Abstract
A Kinetic Harvester is disclosed, including a central shaft connecting two large disks like wheels and an axle. Four long cylindrical arms radiate from the middle of the central shaft and end even with the edges of the disks. Four main braces connect the edges of the disks and the ends of the arms butt into them. A smaller secondary brace runs from the ends of the arms around the circumference of the structure. Two large flat panels are attached to the each arm so that they are able to open and close like a book. There are stops running across the inner surfaces of the disks, down the central shaft and down the inner surfaces of the main braces. When the panels are opened they come up against the stops and are prevented from bending backward. The secondary brace runs between the panels when they are closed and prevents them from both swinging the same way. Springs are mounted on the secondary braces where the panel frames close on them. The springs help to start the opening of the panels. All the panels are mounted on the same sides of the arms so that they all open clockwise or all counterclockwise. When the Kinetic Harvester is installed in a current the water pushes its way between the panels that have loose edges facing into it forcing them open. The material in the centers of the panels are pushed back into a concave shape that offers maximum resistance to the current. On the other side of the Harvester where the loose sides of the panels face away from the current the force of the water squeezes the panels together offering a minimum of resistance to the current. The difference in resistance turns the Harvester around its central shaft. As the Harvester rotates each set of panels opens and closes in turn as they come into the different positions relative to the current. If the current reverses as it would in waves or surf, the panels would open and close on opposite sides of the Harvester and it would keep harvesting power. The rotation of the Harvester can be transmitted to a generator.
Description
- 1. Field of the Invention
- The present invention relates generally to power generation and, in one of its aspects, to power generation from moving liquid such as ocean water.
- 2. Description of Related Art
- In the late sixties, people foresaw the current energy shortage and began searching for an alternative source that would be clean, reliable, cheap and abundant. People knew that there was more than enough kinetic energy in the oceans to run our civilization if it could just be harnessed.
- The Kinetic Harvester is a simple, inexpensive, low tech device that is designed to tap the ocean's enormous kinetic energy that is inherent in tides and currents and waves and convert it to electrical energy. This kinetic energy is usually slow moving but very powerful. A three-mile per hour current has approximately fifteen pounds of lateral push per square foot. It is too slow moving to effectively turn a turbine so another approach is needed. The Kinetic harvester works by holding a large concave panel crosswise to the current. A surface twenty feet by twenty feet would have three tons of force against it. That force can be geared up enough to turn a good-sized generator at optimum speed.
- The basic Kinetic Harvester is a versatile device that can be tailored to many different environments. It can be employed in different mountings to take maximum advantage of any water movement. Because of its adaptability and varied size and appearance I have not shown any dimensions but I foresee the most common size as about forty feet across with panels twenty feet square.
- The Kinetic Harvester includes a central shaft connecting two large disks like wheels and an axle. Four long cylindrical arms radiate from the middle of the central shaft and end even with the edges of the disks. Four main braces connect the edges of the disks and the ends of the arms butt into them. A smaller secondary brace runs from the ends of the arms around the circumference of the structure.
- Two large flat panels are attached to the each arm so that they are able to open and close like a book. There are stops running across the inner surfaces of the disks, down the central shaft and down the inner surfaces of the main braces. When the panels are opened they come up against the stops and are prevented from bending backward.
- The secondary brace runs between the panels when they are closed and prevents them from both swinging the same way. Springs are mounted on the secondary braces where the panel frames close on them. The springs help to start the opening of the panels.
- All the panels are mounted on the same sides of the arms so that they all open clockwise or all counterclockwise.
- This drawing shows the placement of the stops in relation to the panels. When the Kinetic Harvester is installed in a current the water pushes its way between the panels that have loose edges facing into it forcing them open. The material in the centers of the panels are pushed back into a concave shape that offers maximum resistance to the current. On the other side of the Harvester where the loose sides of the panels face away from the current the force of the water squeezes the panels together offering a minimum of resistance to the current. The difference in resistance turns the Harvester around its central shaft. As the Harvester rotates each set of panels opens and closes in turn as they come into the different positions relative to the current.
- If the current reverses as it would in waves or surf, the panels would open and close on opposite sides of the Harvester and it would keep harvesting power. A flywheel and ratchet would even out the flow.
- The ends of the central shafts are set in bearings that mount it in the various supporting structures where it would be deployed.
- The rotation of the Harvester can be transmitted to the generator in a number of ways. The generator can be up out of the water or in a sealed chamber. The power would be carried away through watertight cables.
- Shows one way that the Kinetic Harvester can be employed. There are many other ways. The Kinetic Harvester can be customized to suit the location. It can be made larger or smaller, wider or narrower. Several small ones lined up on a common central shaft could be deployed along a beach to tap the power of the surf. Giant Harvesters with panels of two thousand square feet can deployed in the Gulf Stream.
- On the larger production models the hinges on the panels would be replaced by an arrangement where the arms themselves would become the hinge-pins and the panels would fit on them like the hinges on the pins. All metal parts would be coated with a polymer coating to protect them from the seawater.
- These and other objects, advantages and features of this invention will be apparent from the following description taken with reference to the accompanying drawing, wherein is shown a preferred embodiment of the invention.
- FIG. 1 is a top perspective view of a basic support structure of the present invention, minus panels and stops;
- FIG. 2 is side view of a set of panels according to the present invention in an open position and in a closed position separated by a secondary brace according to the present invention;
- FIG. 3 is a side view of the relationship of a panel, a disk and stops according to the present invention;
- FIG. 4 is a top view of the present invention with all panels in the closed position;
- FIG. 5A is a front view of the present invention showing a pair of panels in the open position;
- FIG. 5B is a side view of the present invention according to FIG. 5A;
- FIG. 6 is a top sectional view of the present invention in operation;
- FIG. 7 is a top view of the present invention showing the transmission of power to an electrical generator according to the present invention; and
- FIG. 8 is a top view of the present invention mounted on its side under a raft in accordance with the present invention.
- The Kinetic Harvester is a simple, inexpensive, low tech device that is designed to tap the ocean's enormous kinetic energy that is inherent in tides and currents and waves and convert it to electrical energy. This kinetic energy is usually slow moving but very powerful. A three-mile per hour current has approximately fifteen pounds of lateral push per square foot. It is too slow moving to effectively turn a turbine so another approach is needed. The Kinetic harvester works by holding a large concave panel crosswise to the current. A surface twenty feet by twenty feet would have three tons of force against it. That force can be geared up enough to turn a good-sized generator at optimum speed.
- The basic Kinetic Harvester is a versatile device that can be tailored to many different environments. It can be employed in different mountings to take maximum advantage of any water movement. Because of its adaptability and varied size and appearance I have not shown any dimensions but I foresee the most common size as about forty feet across with panels twenty feet square.
- Referring now to FIG. 1, a Kinetic Harvester according to the present invention, referred to generally by
reference numeral 10, includes acentral shaft 12 connecting twolarge disks cylindrical arms main braces secondary brace - Referring also to FIG. 2 and FIG. 3, two large
flat panels 42 and 44 are attached to the each arm so that they are able to open and close like a book. There are stops 46 and 48 running across the inner surfaces of the disks, down the central shaft and down the inner surfaces of the main braces. When the panels are opened they come up against the stops and are prevented from bending backward. - The secondary brace runs between the panels when they are closed and prevents them from both swinging the same way. Springs are mounted on the secondary braces where the panel frames close on them. The springs help to start the opening of the panels. Alternatively, hinges50 and 52 could be spring loaded.
- Referring also to FIG. 4, all the panels are mounted on the same sides of the arms so that they all open clockwise or all counterclockwise.
- Referring to FIG. 5, this drawing shows the placement of the stops in relation to the panels.
- Referring now to FIG. 6, when the Kinetic Harvester is installed in a current54 the water pushes its way between the panels that have loose edges facing into it forcing them open. The material in the centers of the panels are pushed back into a concave shape that offers maximum resistance to the current. On the other side of the Harvester where the loose sides of the panels face away from the current the force of the water squeezes the panels together offering a minimum of resistance to the current. The difference in resistance turns the Harvester around its central shaft in a direction 56. As the Harvester rotates each set of panels opens and closes in turn as they come into the different positions relative to the current.
- If the current reverses as it would in waves or surf, the panels would open and close on opposite sides of the Harvester and it would keep harvesting power. A flywheel and ratchet would even out the flow.
- The ends of the central shafts are set in bearings that mount it in the various supporting structures where it would be deployed.
- Referring also to FIG. 7, the rotation of the Harvester can be transmitted to a
generator 58 in a number of ways. The generator can be up out of the water or in a sealed chamber. The power would be carried away through watertight cables. - Referring now to FIG. 8, one way that the Kinetic Harvester can be employed is by securing it under a raft60 and tethering it to the ocean floor by two
cables 62 that are attached to the sides of the raft. This arrangement swings the Kinetic Harvester back and forth through the water as the raft rocks on the waves. It also takes power from the current going by. There are many other ways of positioning and supporting the Kinetic Harvester. The Kinetic Harvester can be customized to suit the location. It can be made larger or smaller, wider or narrower. Several small ones lined up on a common central shaft could be deployed along a beach to tap the power of the surf. Giant Harvesters with panels of two thousand square feet can deployed in the Gulf Stream. - On the larger production models the hinges on the panels would be replaced by an arrangement where the arms themselves would become the hinge-pins and the panels would fit on them like the hinges on the pins. All metal parts would be coated with a polymer coating to protect them from the seawater.
- From the foregoing it will be seen that this invention is well adapted to attain all of the ends and objectives hereinabove set forth, together with other advantages which are inherent to the apparatus.
- It will be understood that certain features and subcombinations are of utility and may be employed without reference to other features and subcombinations. This is contemplated by and is within the scope of the claims.
- As many possible embodiments may be made of the invention without departing from the scope thereof, it is to be understood that all matter herein set forth or shown in the figures of the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.
Claims (8)
1. An apparatus for harvesting power from a moving liquid or gas, comprising in combination:
a central shaft;
a structure rotatable about the central shaft; and
at least one pair of panels hingedly attached to the structure, wherein the panels open up when facing against the direction of movement of the liquid or gas and fold substantially closed when facing away from or sideways to the direction of movement.
2. An apparatus according to claim 1 , further comprising:
at least one stop for preventing the at least one pair of panels from folding back when facing the direction of movement of the liquid or gas; and
a secondary brace for preventing the pair of panels from completely closing when facing away from or sideways to the direction of movement.
3. An apparatus according to claim 2 , further comprising:
an electrical generator; and
a system for turning the electrical generator from the rotation of the shaft or structure around the shaft at a rotational speed much greater than the rotational speed of the shaft or the structure around the shaft.
4. An apparatus according to claim 1 , wherein the at least one pair of panels comprises a first two pairs of panels aligned with each other on opposite sides of the shaft and a second two pairs of panels at right angles to the first to pairs of panels, aligned with each other on opposite sides of the shaft, wherein the first two pairs of panels face in opposite directions from each other and the second two pairs of panels face in opposite directions from each other.
5. An apparatus according to claim 4 , wherein when a pair of panels is in the open position, the panels of that pair form a concave surface facing the direction of movement of the liquid or gas.
6. An apparatus according to claim 4 , further comprising:
at least one stop corresponding to each of pair of panels for preventing the panels of that pair from folding back when facing the direction of movement of the liquid or gas; and
at least one secondary brace corresponding to each pair of panels for preventing that pair of panels from completely closing when facing away from or sideways to the direction of movement.
7. An apparatus according to claim 6 , further comprising:
an electrical generator; and
a system for turning the electrical generator from the rotation of the shaft or structure around the shaft at a rotational speed much greater than the rotational speed of the shaft or the structure around the shaft.
8. An apparatus according to claim 2 , wherein when the at least one pair of panels is in the open position, the panels of that pair form a concave surface facing the direction of movement of the liquid or gas.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/614,566 US20040071616A1 (en) | 2002-07-09 | 2003-07-07 | Kinetic harvester |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US39443802P | 2002-07-09 | 2002-07-09 | |
US10/614,566 US20040071616A1 (en) | 2002-07-09 | 2003-07-07 | Kinetic harvester |
Publications (1)
Publication Number | Publication Date |
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US20040071616A1 true US20040071616A1 (en) | 2004-04-15 |
Family
ID=32073171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US10/614,566 Abandoned US20040071616A1 (en) | 2002-07-09 | 2003-07-07 | Kinetic harvester |
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US (1) | US20040071616A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GR1005599B (en) * | 2006-04-28 | 2007-07-23 | Δημητριος Βασιλειου Καζακος | Flow accelerator of sea currents |
GR20080100046A (en) * | 2008-01-25 | 2009-08-31 | Δημητριος Βασιλειου Καζακος | Flow accelerator of sea currents |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1296082A (en) * | 1918-01-02 | 1919-03-04 | Otto C Huber | Water-wheel. |
US4377372A (en) * | 1981-11-09 | 1983-03-22 | Carl Stutzman | Wind turbine |
US5525037A (en) * | 1993-12-17 | 1996-06-11 | Cummings; John | Overlapping sail wind turbine |
US5570997A (en) * | 1995-07-17 | 1996-11-05 | Pratt; Charles W. | Horizontal windmill with folding blades |
-
2003
- 2003-07-07 US US10/614,566 patent/US20040071616A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1296082A (en) * | 1918-01-02 | 1919-03-04 | Otto C Huber | Water-wheel. |
US4377372A (en) * | 1981-11-09 | 1983-03-22 | Carl Stutzman | Wind turbine |
US5525037A (en) * | 1993-12-17 | 1996-06-11 | Cummings; John | Overlapping sail wind turbine |
US5570997A (en) * | 1995-07-17 | 1996-11-05 | Pratt; Charles W. | Horizontal windmill with folding blades |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GR1005599B (en) * | 2006-04-28 | 2007-07-23 | Δημητριος Βασιλειου Καζακος | Flow accelerator of sea currents |
GR20080100046A (en) * | 2008-01-25 | 2009-08-31 | Δημητριος Βασιλειου Καζακος | Flow accelerator of sea currents |
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