WO2005058689A1 - Boat propelled by wave-created kinetic energy - Google Patents

Boat propelled by wave-created kinetic energy Download PDF

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Publication number
WO2005058689A1
WO2005058689A1 PCT/IT2003/000884 IT0300884W WO2005058689A1 WO 2005058689 A1 WO2005058689 A1 WO 2005058689A1 IT 0300884 W IT0300884 W IT 0300884W WO 2005058689 A1 WO2005058689 A1 WO 2005058689A1
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WO
WIPO (PCT)
Prior art keywords
boat
propulsion
boats
drive bar
bar
Prior art date
Application number
PCT/IT2003/000884
Other languages
French (fr)
Inventor
Giulio Cambon Gerardo
Original Assignee
Giulio Cambon Gerardo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Giulio Cambon Gerardo filed Critical Giulio Cambon Gerardo
Priority to AU2003300768A priority Critical patent/AU2003300768A1/en
Publication of WO2005058689A1 publication Critical patent/WO2005058689A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H19/00—Marine propulsion not otherwise provided for
    • B63H19/02—Marine propulsion not otherwise provided for by using energy derived from movement of ambient water, e.g. from rolling or pitching of vessels
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
    • Y02T70/5218—Less carbon-intensive fuels, e.g. natural gas, biofuels
    • Y02T70/5236—Renewable or hybrid-electric solutions

Definitions

  • the invention concerns the propulsion of boats.
  • Boats are generally propelled by wind or by an engine.
  • the boat here described exploits kinetic energy produced by the waves and therefore those forces, that may be very considerable, created by the mass of water in rising and falling, the invention consequently producing great environmental and commercial benefits as will be described below.
  • Subject of the invention is a form of propulsion for boats that exploits the movement of the boat, pressed by the waves, in relation to an inertial system comprising a heavy body joined to the boat by an elastic means.
  • the heavy body is supported by the second end of a long bar, here called a drive bar, whose first end is joined to the bows of the boat by an articulation.
  • the elastic means consists of a long helical spring whose first end is fixed to a device situated at the point of articulation at the first end of the bar but raised higher, while the second end of said long spring is fixed to a device placed at the second end of said bar.
  • the boat is a catamaran in which the drive bar and the long spring occupy a longitudinal central position.
  • the second end of the drive bar is joined by means of a rod to the rear end of an axial fin articulated, at the stem of the boat, on a transversal shaft so that oscillation of the boat in relation to the weight placed on the second end of the drive bar, causes the fin to make an alternating movement thus propelling the boat.
  • the second end of the drive bar is joined by means of a kinetic mechanism to a propeller at the rear that propels the boat.
  • the kinetic mechanism comprises a crankshaft joined by a rod to the second end of the drive bar, and a disk fixed to said crankshaft on which a specially provided means diametrically moves a friction wheel, set at an axis orthogonal to that of the crankshaft, connected by a kinetic mechanism to the propeller.
  • the friction wheel moves to one end of the disk, the propeller turns at maximum speed.
  • propeller speed is gradually reduced.
  • speed is increased but in the opposite direction so that the boat reverses.
  • the kinetic mechanism comprises a gear wheel between a pair of substantially vertical racks.
  • the gear wheel makes contact with one of the racks when the drive bar moves in one direction, and with the second rack, instead of the first one, when the drive bar moves in the opposite direction. Movement of the gear wheel passes to the propeller through a speed shift mechanism.
  • the second end of the drive bar is joined to the piston of a lift-and-force type of pump that draws in water through a
  • the second end of the drive bar is joined, by means of a kinetic mechanism, that transforms the alternating movement into a rotating movement, to one or more paddle wheels, the axis of which is crosswise to the boat, placed at the stern or at the side.
  • the paddle wheels determine propulsion of the boat.
  • the kinetic mechanisms referred to are not described in detail for the sake of simplicity and also because they do not necessarily constitute specifically innovative solutions.
  • the heavy body that produces the inertial system may consist of one or more passengers seated on a bench fixed to the second end of the drive bar.
  • the drive bar can be locked in position as required, to facilitate manoeuvring during navigation or for mooring the boat, through its connection to a piston sliding in a cylinder fixed to the boat and comprising a valve.
  • the boat can be used close to a beach, a bathing establishment, for recreation and for coastal fishing. Apart from practical purposes, the boat is ideal as a means of amusement and sport.
  • Fig. 1 Catamaran type of boat with an inertial mode of propulsion by means of a "fin", in perspective.
  • Fig. 2 The boat with an inertial mode of propulsion by means of a propeller, in perspective.
  • FIG. 3 The boat with an inertial mode of propulsion by means of a pump, in perspective.
  • Figure 1 shows the catamaran 10 consisting of two hulls 12 and 14 joined by cross pieces 18 and 20.
  • the support is about 50 cm high.
  • a hinge 32 At the base of said support 58 is a hinge 32, with fulcrum 38 between the two parts 34 and 36 transversal to the boat 10, to which is fixed the first end of a tubular bar 30, here called a drive bar.
  • a weight 40 comprising leaden rings 42 placed side by side and held in place by two collars 44 to be fixed by screws.
  • the total weight can therefore be increased or reduced by adding or removing some of the rings 42.
  • the rings 40 weigh about 30 kg.
  • the device 68 Fixed by means of the device 68 to the top of the support 58 is the first end 76 of the long helical metal spring 66 whose second end 78 is fixed to the tab 75 on the collar device 74 mounted longitudinally in relation to the bar 30 and adjustable by one or more transversal screws.
  • the device 68 comprises a screw 70 and wing nut 72 for adjusting tension of the long screw 66.
  • the tubular bar can be maintained in a steady position substantially parallel to the tops of the two hulls.
  • the second end of the bar 30 downstream of the weight 40 can freely slide inside the stop block 48 with its upper and lower ends 50 and 52 respectively.
  • the stop block 48 is fixed to the hulls 12 and 14 by extensions 54.
  • the fin 80 presents a front trapezoidal-shaped part 82 and a rear rectangular part 84.
  • Said front part 82 of the fin is joined to the second end of the bar 30 by means of articulations 92 and 94 connected by the rod 96. Wave movement clearly causes vertical oscillation of the whole boat
  • Figure 2 illustrates a catamaran 120 substantially similar to the catamaran 10 described above, except that propulsion, is obtained by joining the second end of the drive bar 30 to a propeller 130, by the connecting rod 138 and by means of a kinetic mechanism.
  • a vertical body 122 Fitted between the stop block 48 and the rear cross piece 20 is a vertical body 122 held stable by the two wings 124 fixed to the two hulls 12 and 14.
  • Said vertical body 122 comprises a crankshaft 134 whose ends turn in the supports 136 mounted at the sides 128 of said vertical body.
  • the crankshaft 134 is fixed to the second end of the drive bar 30 by the connecting rod 136 and articulations 140 and 142.
  • the shaft 132 carrying the propeller 130 is fixed at the lower end of the vertical body.
  • the crankshaft 134 is fixed to the shaft 132 supporting the propeller 130 by a specially devised kinetic mechanism 144 that can be governed by the sailor driving the catamaran both as regards speed and direction of movement. This mechanism is not described in detail both for simplicity and because specific innovative solutions are not necessary.
  • FIG. 3 shows a catamaran 150 substantially similar to catamaran 10 described above except that propulsion is obtained by joining the second end of the drive bar 30, through articulations 160, 162 and connecting rod 158, to the piston 156 of a cylindrical pump 152. Said piston slides inside said pump 152, joined to the two hulls 12 and 14, by the wings 154 mounted on said hulls between the stop block 48 and rear cross piece 20.
  • valves 164 and 168 In the bottom of the cylinder 152 are the valves 164 and 168 one opposite the other, lying on an axis substantially orthogonal to the cylinder and therefore substantially parallel to the catamaran.
  • Valve 164 presents a head 166 for closure, opposed to the duct 172 open towards the bows of the catamaran while the head 170 to close the valve 168 is opposed to duct 174 open towards the stern.
  • valve 164 opens letting in the water from around the hull (arrow A) into cylinder 152, while valve 168 closes.
  • valve 164 closes while valve 168 opens allowing the water in the cylinder to flow out under pressure towards the stern (arrow B).
  • the catamaran can be completed by installation of a rudder and provision of oars.
  • An auxiliary outboard motor is also provided.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

Propulsion for boats, including catamaran type boats, exploiting boat movement caused by the waves in relation to an inertial system comprising a heavy body (40) fixed to the boat by an elastic means (66) and supported at the end of a long longitudinal bar (30) connected by means of an articulation (32) to the bows. The stern end of the bar (30) is joined, as the case may be and by means of a kinetic mechanism, either to a fin articulated on an axis transversal to the boat, or to a crankshaft (134) that transmits movement to a propeller (130), or to the piston of a lift-and-force type pump that draws in water through a valve facing the bows and expels it through a valve facing the stern, or to one or more paddle wheels situated at the stern or at the side of the boat.

Description

Boat propelled by wave-created kinetic energy
The invention concerns the propulsion of boats.
Boats are generally propelled by wind or by an engine.
The boat here described exploits kinetic energy produced by the waves and therefore those forces, that may be very considerable, created by the mass of water in rising and falling, the invention consequently producing great environmental and commercial benefits as will be described below.
Subject of the invention is a form of propulsion for boats that exploits the movement of the boat, pressed by the waves, in relation to an inertial system comprising a heavy body joined to the boat by an elastic means.
The heavy body is supported by the second end of a long bar, here called a drive bar, whose first end is joined to the bows of the boat by an articulation. The elastic means consists of a long helical spring whose first end is fixed to a device situated at the point of articulation at the first end of the bar but raised higher, while the second end of said long spring is fixed to a device placed at the second end of said bar. By means of these devices the end positions of the spring, and therefore its tension, can be adjusted.
In one type of execution the boat is a catamaran in which the drive bar and the long spring occupy a longitudinal central position. In one type of execution the second end of the drive bar is joined by means of a rod to the rear end of an axial fin articulated, at the stem of the boat, on a transversal shaft so that oscillation of the boat in relation to the weight placed on the second end of the drive bar, causes the fin to make an alternating movement thus propelling the boat. In other types of execution the second end of the drive bar is joined by means of a kinetic mechanism to a propeller at the rear that propels the boat. In one of these executions the kinetic mechanism comprises a crankshaft joined by a rod to the second end of the drive bar, and a disk fixed to said crankshaft on which a specially provided means diametrically moves a friction wheel, set at an axis orthogonal to that of the crankshaft, connected by a kinetic mechanism to the propeller. When the friction wheel moves to one end of the disk, the propeller turns at maximum speed. When the friction wheel moves towards the centre of the disk, propeller speed is gradually reduced. Finally, when the friction wheel is moved beyond the centre of the disk, speed is increased but in the opposite direction so that the boat reverses. In another of these executions the kinetic mechanism comprises a gear wheel between a pair of substantially vertical racks. The gear wheel makes contact with one of the racks when the drive bar moves in one direction, and with the second rack, instead of the first one, when the drive bar moves in the opposite direction. Movement of the gear wheel passes to the propeller through a speed shift mechanism. In another execution the second end of the drive bar is joined to the piston of a lift-and-force type of pump that draws in water through a
' valve facing towards the bows and expels it through a valve facing towards the stem, thus propelling the boat. In another execution the second end of the drive bar is joined, by means of a kinetic mechanism, that transforms the alternating movement into a rotating movement, to one or more paddle wheels, the axis of which is crosswise to the boat, placed at the stern or at the side.
By rotating, the paddle wheels determine propulsion of the boat.
The kinetic mechanisms referred to are not described in detail for the sake of simplicity and also because they do not necessarily constitute specifically innovative solutions. The heavy body that produces the inertial system may consist of one or more passengers seated on a bench fixed to the second end of the drive bar.
The drive bar can be locked in position as required, to facilitate manoeuvring during navigation or for mooring the boat, through its connection to a piston sliding in a cylinder fixed to the boat and comprising a valve.
When the valve is open the drive bar move freely.
When the valve is partially closed, propulsion is slowed.
When the valve is fully closed propulsion ceases. The invention offers evident advantages.
No type of fuel is used and no pollution is caused.
Its quiet movement is that achieved with sails but avoiding their bulk.
The boat can be used close to a beach, a bathing establishment, for recreation and for coastal fishing. Apart from practical purposes, the boat is ideal as a means of amusement and sport.
In the version where the weight is provided by a passenger, or even by children, the great advantages is that wave effect is not felt.
To summarise its advantages, by transforming the succession of waves into a means of propulsion, maximum integration is attained between human beings and nature. Characteristics and purposes of the disclosure will be made still clearer by the following examples of its execution illustrated by diagrammatically drawn figures.
Fig. 1 Catamaran type of boat with an inertial mode of propulsion by means of a "fin", in perspective.
Fig. 2 The boat with an inertial mode of propulsion by means of a propeller, in perspective.
Fig. 3 The boat with an inertial mode of propulsion by means of a pump, in perspective. Figure 1 shows the catamaran 10 consisting of two hulls 12 and 14 joined by cross pieces 18 and 20.
Placed on the front cross piece 18 is the reversed-V-shaped support
58 with a fixing plate 60 reinforced by a strut 62 and plate 64.
In one type of execution the support is about 50 cm high. At the base of said support 58 is a hinge 32, with fulcrum 38 between the two parts 34 and 36 transversal to the boat 10, to which is fixed the first end of a tubular bar 30, here called a drive bar.
Close to the second end of said bar is a weight 40 comprising leaden rings 42 placed side by side and held in place by two collars 44 to be fixed by screws.
The total weight can therefore be increased or reduced by adding or removing some of the rings 42.
In one type of execution the rings 40 weigh about 30 kg.
Fixed by means of the device 68 to the top of the support 58 is the first end 76 of the long helical metal spring 66 whose second end 78 is fixed to the tab 75 on the collar device 74 mounted longitudinally in relation to the bar 30 and adjustable by one or more transversal screws.
The device 68 comprises a screw 70 and wing nut 72 for adjusting tension of the long screw 66. By the adjustments made to the weight 40 and to tension of the screw 60, the tubular bar can be maintained in a steady position substantially parallel to the tops of the two hulls.
The second end of the bar 30 downstream of the weight 40, can freely slide inside the stop block 48 with its upper and lower ends 50 and 52 respectively.
The stop block 48 is fixed to the hulls 12 and 14 by extensions 54.
On .opposite sides of the rear bodies 22 of the hulls 12 and 14 are supports 88 for a short shaft 90 that freely slides inside the crosswise housing 86 on the fin 80.
The fin 80 presents a front trapezoidal-shaped part 82 and a rear rectangular part 84.
Said front part 82 of the fin is joined to the second end of the bar 30 by means of articulations 92 and 94 connected by the rod 96. Wave movement clearly causes vertical oscillation of the whole boat
10 including the hinge, at the bow end, on the first end of the drive bar 30, while the weight 40 at the second end of said drive bar tends by inertia to remain still in relation to said wave movement
Since the forward end 82 of the fin 80 is joined to the bar 30 held down by the weight 40, wave movement causes said fin to oscillate vertically in relation to the boat which is consequently propelled onward.
Figure 2 illustrates a catamaran 120 substantially similar to the catamaran 10 described above, except that propulsion, is obtained by joining the second end of the drive bar 30 to a propeller 130, by the connecting rod 138 and by means of a kinetic mechanism.
Fitted between the stop block 48 and the rear cross piece 20 is a vertical body 122 held stable by the two wings 124 fixed to the two hulls 12 and 14. Said vertical body 122 comprises a crankshaft 134 whose ends turn in the supports 136 mounted at the sides 128 of said vertical body. The crankshaft 134 is fixed to the second end of the drive bar 30 by the connecting rod 136 and articulations 140 and 142. The shaft 132 carrying the propeller 130 is fixed at the lower end of the vertical body. The crankshaft 134 is fixed to the shaft 132 supporting the propeller 130 by a specially devised kinetic mechanism 144 that can be governed by the sailor driving the catamaran both as regards speed and direction of movement. This mechanism is not described in detail both for simplicity and because specific innovative solutions are not necessary.
Figure 3 shows a catamaran 150 substantially similar to catamaran 10 described above except that propulsion is obtained by joining the second end of the drive bar 30, through articulations 160, 162 and connecting rod 158, to the piston 156 of a cylindrical pump 152. Said piston slides inside said pump 152, joined to the two hulls 12 and 14, by the wings 154 mounted on said hulls between the stop block 48 and rear cross piece 20.
In the bottom of the cylinder 152 are the valves 164 and 168 one opposite the other, lying on an axis substantially orthogonal to the cylinder and therefore substantially parallel to the catamaran.
Valve 164 presents a head 166 for closure, opposed to the duct 172 open towards the bows of the catamaran while the head 170 to close the valve 168 is opposed to duct 174 open towards the stern. When the piston 156 rises, valve 164 opens letting in the water from around the hull (arrow A) into cylinder 152, while valve 168 closes. But when the piston 156 moves downward, valve 164 closes while valve 168 opens allowing the water in the cylinder to flow out under pressure towards the stern (arrow B). The catamaran can be completed by installation of a rudder and provision of oars.
An auxiliary outboard motor is also provided.

Claims

1. Propulsion for boats characterized in that it exploits movement made by the boat, due to the effect of the waves, in relation to an inertial system comprising a heavy body held to the boat by an elastic means.
2. Propulsion for boats as in claim 1 , characterized in that the heavy body is supported by the second end of a long bar, here called a drive bar, whose first end is joined to the bows of the boat by an articulation.
3. Propulsion for boats as in claims 1 and 2, characterized in that the elastic means consists of a long helical spring whose first end is fixed to a device placed at the articulation of the first end of the bar but raised above it, while the second end of the spring is fixed to a device at the second end of said bar, thus enabling said devices to adjust the positions of the ends of the spring and therefore its tension.
4. Propulsion for boats as in claims 1 -3, characterized in that the boat is of the catamaran type, the drive bar and long spring being placed substantially on its longitudinal centre.
5. Propulsion for boats as in claims 1 -4, characterized in that the second end of the drive bar is joined by a connecting rod to the front end of an axial fin articulated, at the stern of the boat, on a transversal shaft, the effect of boat oscillation in relation to the weight placed on the second end of the drive bar, being such as to cause the fin to make alternating movements and so propel the boat.
6. Propulsion for boats as in claims 1 -4, characterized in that the second end of the drive bar is connected by a specially devised kinetic mechanism to a propeller at the rear that propels the boat.
7. Propulsion for boats as in claim 6, characterized in that the kinetic mechanism comprises a crankshaft joined by a connecting rod to the second end of the drive bar, and comprises a disk, fixed to said crankshaft on which a friction wheel is diametrically moved by a means of control provided for it, said friction wheel lying on an axis orthogonal to that of the crankshaft and being kinetically connected to the propeller so that when the friction wheel lies at one end of the disk, the propeller turns at maximum speed, when said friction wheel is moved towards the centre of the disk, propeller speed is reduced, and when said friction wheel is moved across the centre of the disk, speed is once more increased but reverses the direction in which the boat moves.
8. Propulsion for boats as in claim 6, characterized in that the kinetic mechanism comprises a gear wheel placed between a pair of substantially vertical racks, contact being made between the gear wheel and one of the racks when the drive bar is moved in one direction, and contact between said wheel and the second rack, instead of the first, when the drive bar is moved in the opposite direction, movement of the gear wheel being transferred to the propeller by a speed shift provided for the purpose.
9. Propulsion for boats as in claims 1 -4, characterized in that the second end of the drive bar is joined to the piston of a lift-and-force type pump that draws in water through a valve facing towards the bows and expels it through a valve facing towards the stern so propelling the boat.
10. Propulsion for boats as in claims 1 -4, characterized in that the second end of the drive bar is joined by means of a kinetic mechanism, able to transform alternating motion into rotating motion, to one or more paddle wheels, mounted on a transversal axis in relation to the boat, placed at the stern or at the side of the boat, their rotation causing propulsion of the boat.
11. Propulsion for boats and in claims 1 and 2, characterized in that the heavy body that gives rise to the inertial system consists of one or more passengers sitting on seats fixed to the second end of the drive bar.
12. Propulsion for boats as in claim 2, characterized in that the drive bar can be locked as required, to facilitate manoeuvring the boat during navigation or for mooring it, by its connection to a piston that slides in a cylinder fixed to the boat and provided with a valve so that, when the valve is open, the drive bar moves freely, when the valve is partially closed, propulsion is slowed down and when the valve is completely closed propulsion ceases.
PCT/IT2003/000884 2003-12-18 2003-12-31 Boat propelled by wave-created kinetic energy WO2005058689A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003300768A AU2003300768A1 (en) 2003-12-18 2003-12-31 Boat propelled by wave-created kinetic energy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2003A002508 2003-12-18
IT002508A ITMI20032508A1 (en) 2003-12-18 2003-12-18 VESSEL WITH KINETIC ENERGY PROPULSION OF WAVES.

Publications (1)

Publication Number Publication Date
WO2005058689A1 true WO2005058689A1 (en) 2005-06-30

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ID=34685624

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2003/000884 WO2005058689A1 (en) 2003-12-18 2003-12-31 Boat propelled by wave-created kinetic energy

Country Status (3)

Country Link
AU (1) AU2003300768A1 (en)
IT (1) ITMI20032508A1 (en)
WO (1) WO2005058689A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1267538A (en) * 1960-09-15 1961-07-21 Installation for the use of sea wave energy

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1267538A (en) * 1960-09-15 1961-07-21 Installation for the use of sea wave energy

Also Published As

Publication number Publication date
AU2003300768A1 (en) 2005-07-05
ITMI20032508A1 (en) 2005-06-19

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