Kite tethering device.

Abstract

Kite tethering device. The invention relates to a kite (2) retention device (3) comprising a first element (10) including a first retention point (11) and a second retention point (12) intended to each retain a line (6; 7) of such a kite (2), the first and second retention points (11, 12) defining a first direction (D1) passing through the first and second retention points (11, 12), a second element (20), the first element (10) being mounted pivotally relative to the second element (20) about a vertical or substantially vertical principal axis (A), and / or the principal axis (A) extending orthogonally or substantially orthogonally to the first direction (D1), the first and second retention points (11, 12) being arranged on either side of a first plane (P1) comprising the principal axis (A) and being perpendicular to the first direction (D1). Abbreviated figure: fig. 2

Description

Title of the invention: Kite restraint device. Technical field of the invention

[0001] The invention relates to a kite restraint device. The invention further relates to a system comprising such a restraint device. The invention further relates to a floating craft, a land-based vehicle, or a power generation platform comprising such a system. Finally, the invention relates to a method of using such a system. Prior art

[0002] A traction kite for a floating craft, such as for example a boat or a ship, is difficult to control when launching it from a deck of the floating craft, when recovering it on the deck, but also in flight.

[0003] A kite is also used, particularly on a platform, to ensure the winding of at least one rope, cable or other, followed by an unwinding generating electricity by means of an alternator.

[0004] However, there are significant risks of the kite being damaged at sea or by contact with the floating vessel, platform, or ground during maneuvers. The conventional launching of this type of kite requires the complete unwinding of the lines used to mechanically attach it to the floating vessel or platform. This is possible on land but much more difficult at sea. One solution is to let the kite drift on the surface of the water and launch it once the lines are unwinded. Another solution is to use a specialized vessel to launch it in the wind and, consequently, to retrieve it. Such solutions are not satisfactory. Presentation of the invention

[0005] The object of the invention is to provide a kite restraint device that overcomes the above drawbacks. In particular, the invention offers a solution for easily coordinating the adjustment of the traction points with a heading and wind direction. Summary of the invention

[0006] To achieve this objective, the invention relates to a kite restraint device comprising: - a first element comprising a first attachment point and a second attachment point, each intended to retain a line of such a kite, the first and second attachment points defining a first direction passing through, or substantially through, the first and second attachment points, - a second element, in particular a second frame-type element, the first element being mounted pivoting relative to the second element around a vertical or substantially vertical principal axis, and / or the principal axis extending orthogonally or substantially orthogonally to the first direction, the first and second retention points being arranged on either side of a first plane comprising the principal axis and being perpendicular to the first direction.

[0007] A gap may extend between the main axis and the first direction, the gap being either fixed or adjustable.

[0008] The device may include a braking and / or locking and / or pivoting driving means of the first element relative to the second element, and / or a first length between the first retention point and the first plane may be variable, in particular may be adjustable, and / or a second length between the second retention point and the first plane may be variable, in particular may be adjustable, and / or the first element may include a first means of holding a first line, in particular of the stop cleat type, and / or a second means of holding a second line, in particular of the stop cleat type, and / or the first element may include at least a third retention point of a third line of such a kite.

[0009] The first element may include a winding and unwinding means for a first line and / or a second line of such a kite, in particular a winding and unwinding means arranged at the level of the foreground and / or at the level of the first direction, in particular a winding and unwinding means comprising at least one winch and / or winch and / or jack and / or pilot actuator.

[0010] The first element may include sliding and / or rolling elements and the second element may include a sliding and / or rolling support, in particular a sliding and / or rolling support in the form of a circular ring, the sliding and / or rolling support being able to cooperate with the sliding and / or rolling elements, or the first element may include a sliding and / or rolling support, in particular a sliding and / or rolling support in the form of a circular ring, and the second element may include sliding and / or rolling elements, the sliding and / or rolling support being able to cooperate with the sliding and / or rolling elements, so as to ensure a pivot connection around the main axis between the first element and the second element.

[0011] The device may include a first guidance means for the deployment and recovery of such a kite, the first guidance means being able to be fixed on the first element, in particular between the first retention point and the second retention point.

[0012] The first guiding means may include a part of revolution, in particular mounted to rotate about a secondary axis, in particular a secondary axis orthogonal to the first direction, so as to allow the sliding and / or rolling and / or winding of at least a part of a sail of such a kite.

[0013] The device may include a second guidance means for the deployment and recovery of such a kite, the second guidance means being able to be fixed on the second element.

[0014] The first element may include a beam, in particular a tubular beam, in particular of circular section.

[0015] The first element may include a tubular beam open at at least one of its ends so as to allow the entry of a sail of such a kite into the tubular beam via at least one end and the exit of a sail of such a kite from the tubular beam.

[0016] The first element can be mounted to slide relative to the second element so as to allow translation along the first direction.

[0017] The first element may include: - a mast that may have an axis extending parallel or substantially parallel to the main axis, in particular an inflatable mast, or - a means of attachment for a removable mast, so as to facilitate the take-off of such a kite and / or to allow the formation of a rig.

[0018] The invention further relates to a system comprising a device as defined above, the system comprising: - a kite including a sail, - a first line connected to the first anchor point and to the sail, and a second line connected to the second anchor point and to the sail, the length between the first retention point and the second retention point along the first direction being in particular equal to, or substantially equal to, the span of the sail, the span being in particular measured parallel or substantially parallel to the first direction.

[0019] The system may include a means of limiting the deployment of the sail, in particular a ring intended to encircle the sail and / or a sock intended to store at least part of the sail.

[0020] The system may include a kite sending and / or retrieval line that can be attached at one end to an ear of the kite sail near the attachment of the first or second line, the second end of the sending and / or retrieval line being free.

[0021] The invention further relates to a floating craft, in particular a boat or vessel, or land craft, including rolling and / or sliding land craft, the floating craft or land craft comprising a system as defined above, the second element being fixed to a deck of the floating craft or being a deck of the floating craft, the principal axis being arranged in particular in a vertical and longitudinal median plane of the floating craft, or the second element being fixed on a chassis of the rolling and / or sliding land vehicle or being a chassis of the land vehicle, the main axis being arranged in particular in a vertical and longitudinal median plane of the chassis of the land vehicle.

[0022] The floating craft or land craft may include: - a means of changing the course of a floating vessel or the direction of a land vehicle, including a rudder or steering mechanism, - a means of transmitting the pivoting of the first element around the main axis by means of changing course or direction, in particular a transmission means comprising at least one line and at least one return pulley, so as to steer the floating craft or land craft according to the direction of the wind captured by the kite.

[0023] The invention further relates to an energy production platform comprising a system as defined above, the platform comprising an energy production means, in particular an electric power generation alternator or a hydraulic pump, connected to the first line and / or the second line so that the winding and / or unwinding of the line(s) drives the energy production means, and / or connected to the first element so that the pivoting of the first element relative to the second element drives the energy production means.

[0024] The invention further relates to a method of using a system as defined above, the system being intended to tow a floating craft or a rolling and / or sliding land vehicle or to produce energy on a platform, the method comprising the following steps: - one of the first and second lines is partially unfurled while keeping the first part of the sail out of the wind so that the second part of the sail catches enough wind to stay aloft, notably by means of the first guiding means and / or the second guiding means, - the unfurling of the line continues so that the first part of the sail gradually catches the wind until the sail is fully aloft, - Wind power is used to propel the boat or land vehicle or to generate energy on the platform; the sail creates a force on the first element; the pivot joint of the first element relative to the second element allows the second element to recover this force regardless of the wind direction, the first direction being oriented orthogonally to the wind direction, possibly by braking pivoting and / or blocking pivoting and / or causing the first element to pivot relative to the second element, - one of the first and second lines is partially wound so that the first part of the sail no longer catches the wind, in particular by winding it around the first means of guidance, the second part of the sail remaining in the wind, - the winding of the line is continued so that the second part of the sail no longer catches the wind. Presentation of the figures

[0025] Other advantages and features will become clearer from the following description of embodiments and variants of the invention and of a method of use given by way of non-limiting example and shown in the accompanying drawings, in which:

[0026] [Fig-1] Fig. 1 is a schematic view of a floating craft according to a method of implementation.

[0027] [Fig.2] Fig.2 is a schematic view of the floating craft according to the embodiment.

[0028] [Fig.3] The [Fig.3] is a detailed top view of a kite restraint device according to one embodiment.

[0029] [Fig.4] The [Fig.4] is a schematic top view of a floating craft according to one embodiment.

[0030] [Fig.5] The [Fig.5] is a schematic view of a system according to one embodiment.

[0031] [Fig.6] The [Fig.6] is a schematic view of the system according to the embodiment.

[0032] [Fig.7] Fig.7 is a schematic top view of the system according to the mode of realization.

[0033] [Fig.8] The [Fig.8] is a schematic view of a system according to a first variant of the embodiment comprising a first element consisting of a tubular beam.

[0034] [Fig.9] The [Fig.9] is a partial schematic view of a system according to a second variant of the embodiment.

[0035] [Fig. 10] The [Fig. 10] is a partial schematic view of a system according to a third variant of the embodiment.

[0036] [Fig. 11] The [Fig. 11] is a partial schematic view of a system according to a fourth variant of the embodiment.

[0037] [Fig. 12] The [Fig. 12] is a detail view of a means for limiting the deployment of a sail according to one embodiment.

[0038] [Fig. 13] Fig. 13 is a detailed view of the deployment limitation means sail according to a method of realization.

[0039] [Fig. 14] The [Fig. 14] is a view of a floating craft according to a fifth variant of the embodiment.

[0040] [Fig. 15] The [Fig. 15] is a schematic view of a land vehicle according to one embodiment.

[0041] [Fig. 16] The [Fig. 16] is a schematic view of a platform according to one embodiment. Detailed description

[0042] The direction in which a floating craft moves in a straight line, in a plane parallel to the water level of a body of water, is defined as the longitudinal direction. By convention, the direction perpendicular to the longitudinal direction, located in a plane parallel to the water level of a body of water, is called the transverse direction. The third direction, perpendicular to the other two, is called the vertical direction.

[0043] Figure 1 schematically illustrates a floating craft 1. Such a floating craft 1 is, for example, a boat or a ship. Alternatively, the craft 1 may be a rolling or sliding land craft.

[0044] The floating craft 1 includes a system 4.

[0045] The system 4 comprises a kite 2, preferably a traction kite. The kite 2 comprises a sail 5, for example, a fabric sail. The sail 5 comprises at least a first part 5A and a second part 5B, as illustrated in [Fig. 2]. Preferably, the first part 5A extends at the level of a first wingtip of the sail 5, and the second part 5B extends at the level of a second wingtip of the sail. The system 4 further comprises a first line 6 and a second line 7. The system 4 further comprises a kite retaining device 3.

[0046] More specifically, as illustrated in [Fig. 2], the retaining device 3 comprises a first element 10. The first element 10 comprises a first retaining point 11 and a second retaining point 12. Each retaining point retains a line of the kite. The first and second retaining points 11, 12 define a first direction DI passing through, or substantially through, the first and second retaining points 11, 12. The retaining device 3 further comprises a second element 20. For example, the second element 20 is of the frame type. The first element 10 is pivotally mounted relative to the second element 20 about a vertical or substantially vertical principal axis A. The principal axis A extends orthogonally or substantially orthogonally to the first direction DI. A first plane PI comprises the principal axis A and is perpendicular to the first direction DI. The first and second retention points 11,12 are arranged on either side of the first plane PL.

[0047] Preferably, the second element 20 is mounted, fixed, that is to say added to the frame, for example fixed to a deck 9 of the craft 1. In any case, the second element is fixed relative to the frame of the craft or the rolling and / or sliding land vehicle. Indeed, the first element 10 receives the tensile forces of the kite from lines 6, 7 and transmits these forces to the second element 20 via the pivot joint which will be described later. This is why the second element must be connected, that is to say fixed to a hull or a deck or a chassis.

[0048] The first line 6 is connected to the first retaining point 11, or at the level of the first retaining point 11, and to the sail 5. The first line 6 is preferably connected at the level of the second part 5B of the sail 5. The second line 7 is connected to the second retaining point 12, or at the level of the second retaining point 12, and to the sail 5. The second line 7 is preferably connected at the level of the first part 5A of the sail 5.

[0049] As illustrated in Figures 3, 5, and 7, preferably a gap E exists between the principal axis A and the first direction DI. This gap E is, for example, variable depending on the angle of incidence α, which is dependent on the flight characteristics of the kite (see [Fig. 5]) in combination with the settings of a first length L1 (length between the first attachment point 11 and the first plane PI) and a second length L2 (length between the second attachment point 12 and the first plane PI) illustrated in [Fig. 3]. Advantageously, the resultant of the kite's traction forces, represented by the axis F in Figures 5 and 6, intersects or substantially intersects the principal axis A, at or substantially at the level of a plane of rotation between a base 10' (for example) of the first element 10 and the second element 20. This facilitates pivoting between the first and second elements, in particular by preventing the occurrence of other torques.For example, the gap E is adjustable. Note that the point of application of the aerodynamic forces is located approximately between the first restraint point 11 and the second restraint point 12, that is to say, in the middle of the sum of the two lengths L1 and L2.

[0050] As illustrated in [Fig. 2], the retaining device 3 includes a braking and / or locking and / or pivoting means 40 for the first element 10 relative to the second element 20. Thus, for example, the first element 10 can be braked and / or locked and / or pivoted relative to the second element 20. For example, a braking system, in particular including at least one friction element, is fitted to the first element and / or the second element. Alternatively or in addition, a pivoting system, in particular including a lever arm capable of easily generating pivoting about the axis A of the first element, is provided. Alternatively or in addition, a locking means, For example, a ratchet wheel type, cooperating with one or more pawls arranged on the first element and / or the second element, allows the angular position of the first element to be locked relative to the second element. Optionally, two locking mechanisms are provided, for example, to lock pivoting in one direction around the main axis A and in a second direction opposite to the first.

[0051] Alternatively, or in addition, the means 40 include mechanical and electronic means, such as sensors and / or actuators. Thus, the means 40 are capable of detecting any angular misalignment between the first element and the second element and, if necessary, of generating braking and / or locking and / or drive, possibly via a servo control means. For example, the means 40 may include a geared motor.

[0052] As illustrated in Figures 2 and 3, the first element 10 extends at least substantially along the direction Dl. Preferably, as illustrated in particular in Figures 5 and 6, the first element 10 comprises a base 10'.

[0053] As illustrated in Figures 3 and 6, the first length L1 between the first retaining point 11 and the first plane PI, along the first direction Dl, is variable. Advantageously, the first length L1 is adjustable. Alternatively, or in addition, the second length L2 between the second retaining point 12 and the first plane PI, along the first direction Dl, is variable. Advantageously, the second length L2 is adjustable.

[0054] It should be noted that the length L (illustrated in [Fig. 3]) between the first attachment point 11 and the second attachment point 12 is, or is substantially, the sum of the first length L1 and the second length L2. For example, as illustrated in [Fig. 4], the wingspan EN of the kite sail 5 along the first direction Dl is on the order of the length L. The wingspan EN is, for example, measured parallel or substantially parallel to the first direction Dl. The wingspan EN of the kite measured along the first direction Dl may be much less than the length L (as in [Fig. 4]). Furthermore, the wingspan EN measured along the first direction Dl may be much greater than the length L.

[0055] Preferably, as illustrated in Figures 2 and 3, the first element 10 comprises a winding and unwinding means 13 for the first line 6 and / or the second line 7 of the kite 2. Preferably, the winding and unwinding means is arranged at the level of the first plane PI and / or at the level of the first direction DL. For example, the winding and unwinding means 13 comprises at least one winch and / or winch and / or jack and / or pilot actuator. Such an actuator comprises, for example, an electric motor controlled electronically so as to follow a piloting law.

[0056] Preferably, as illustrated in [Fig.2], the first element 10 comprises a first retaining means 16 for holding and / or retaining the first line 6. Advantageously, the first element 10 comprises a second retaining means 17 for holding and / or retaining the second line 7. Preferably, the first and second retaining means 16, 17 are of the stop cleat type.

[0057] Preferably, as schematically illustrated in [Fig. 5], the first element 10 comprises sliding and / or rolling elements 19 and the second element 20 comprises a sliding and / or rolling support 29. For example, the sliding and / or rolling support 29 is in the form of a circular ring, the sliding and / or rolling support 29 cooperating with the sliding and / or rolling elements 19. Alternatively, the first element 10 comprises a sliding and / or rolling support 19' and the second element 20 comprises sliding and / or rolling elements 29'. For example, the sliding and / or rolling support 19' is in the form of a circular ring, the sliding and / or rolling support 19' cooperating with the sliding and / or rolling elements 29'. The support and the corresponding elements provide a pivot joint about the main axis A between the first element 10 and the second element 20.For example, the sliding and / or rolling support and the rolling and / or sliding elements are of the bearing type, for example, made of bronze or a material with similar properties, particularly a low coefficient of friction. Alternatively or in addition, the sliding and / or rolling elements and their support are of the cylindrical roller, ball, or tapered roller bearing type. For example, this could be a ball or roller thrust bearing. Alternatively or in addition, the support comprises a circular rail, and the sliding and / or rolling elements cooperate with or on this circular rail, for example, via a sliding and / or rolling carriage system. Preferably, the support and the sliding and / or rolling elements are concealed so as to be protected against moisture and / or dirt.For example, a cover, tarpaulin, or equivalent is provided to allow optimal operation without dirt or moisture, without hindering their pivoting. For example, a lubrication system is provided to ensure optimal pivoting conditions. Alternatively, or in addition, the elements or the support are or include parts, particularly pads, made of Ertacetal (registered trademark) or polyethylene or any material with a low coefficient of friction, or include at least one wheel and / or at least one roller. Thus, in one embodiment, the pivoting of the first element relative to the second element can be achieved by a trolley rolling or sliding on a circular rail or on a substantially circular section of rail.

[0058] Alternatively or in addition, the second element 20 may include a a vertically extending tube, for example a large diameter tube, for example made of steel, and including a bearing and / or a friction pad at its base, the element 10 comprising a tube of larger diameter and fitting around the tube of the element 20. Preferably, the base of the element 20 is then just above a deck 9 in the case of a floating craft 1.

[0059] In any event, the connection between the first element and the second element is preferably of the pivot type, or substantially of the pivot type, preferably with little or no play. Optionally, a means for compensating or adjusting the play in the connection is provided.

[0060] In the case of a first element 10 comprising the base 10', preferably the sliding and / or rolling means 19, 29, 19', 29' enabling the creation of the pivot connection between the first element 10 and the second element 20, are arranged between the base 10' and the second element 20. Preferably, the base 10' has a circular surface of large diameter opposite the second element 20 so as to distribute the pressure between the base and the second element 20.

[0061] As illustrated in Figures 2, 3, and 9, the device 3 further includes a first guiding means 15 for deploying and retrieving the kite 2. Advantageously, the first guiding means 15 is fixed to the first element 10. For example, the first guiding means is arranged between the first retention point 11 and the second retention point 12. Preferably, the first guiding means 15 comprises or is a part of revolution. For example, the part of revolution is mounted to rotate about a secondary axis B (illustrated in [Fig. 3]). For example, the secondary axis B is orthogonal to the first direction Dl, so as to permit and facilitate the sliding and / or rolling and / or winding of at least a part of the sail 5 of the kite 2. Thus, the first guiding means 15 has for example a diabolo shape, or substantially diabolo shape, or is a diabolo or substantially a diabolo or a pulley or substantially a pulley.The first guiding means 15 is free of sharp edges or angles on the surfaces intended to be in contact with the sail so as to limit friction against the sail as much as possible.

[0062] Preferably, as illustrated in Figures 11, 12, and 13, the device 3 further comprises a second guiding means 25 for deploying and retrieving the kite 2. The second guiding means 25 is arranged and / or fixed on the second element 20. Preferably, the second guiding means is a ring, or an arched, bent, or curved tube, or a hoop, or even a pulley having an axis of rotation extending horizontally or substantially horizontally. In any case, the second guiding means has a surface intended to be in contact with the sail. Thus, the second guiding means is free of sharp edges or angles on its contact surface with the sail so as to minimize the conformations of The nature of the sail is designed to wear down it. For example, the surface in contact with the kite fabric is rounded and / or curved, or at least has chamfers, preferably rounded chamfers. The guiding device assists an operator in controlling the sail by friction during the sail release maneuver.

[0063] Advantageously, as illustrated in Figures 2, 5 and 6, the first element 10 comprises, or is, a beam 14. For example, the beam has a circular and / or square and / or rectangular and / or oval cross-section. For example, the beam is tubular.

[0064] Advantageously, as illustrated in [Fig. 8], according to a first embodiment, the first element 10 comprises, or is, a tubular beam open at at least one of its ends. Preferably, the beam 14 is open at both ends 14A, 14B so that at least a portion of the second line 7, for example, and at least a first portion 5A of the sail 5, can be inserted within the beam. In this case, when using the kite, to put the kite into the wind, the first portion 5A of the sail can be gradually extended before the second line 7 is itself gradually extended from the tubular beam. Indeed, since the second line 7 is attached to the first portion 5A of the sail, the second line can thus pass through the tube 14 and emerge at the end 14B to return to the winding and unwinding means 13, for example.

[0065] Alternatively, the first line 6 and the second part 5B of the canvas or sail 5 are inserted at least partially within the tubular beam 14 outside the period of use of the kite.

[0066] Note that the insertion of the line concerned and of the first part or of the second part of the sail can be done via the end 14A or via the end 14B.

[0067] Preferably, only one end of the beam is adapted to allow the passage of the line and the section of sail in this manner. In other words, the insertion of the line and the section of sail in question into the tubular beam and the exit of the line and the section of sail in question from the inside are provided at only one end of the beam. One or more chamfers, or even rolling and / or sliding means, such as, for example, one or more pulleys, are arranged at the relevant entry / exit end for the sail and the line. In this case, the other end of the beam includes, for example, a simple attachment means for the other line or, preferably, a pulley-type element so as to allow the other line to be lengthened or shortened if necessary, for example, by securing the other end of the line with a stopper-type means.

[0068] Thus, the tubular cavity of the tubular beam 14 allows the kite sail to enter the tubular beam via one end and exit from the tubular beam.

[0069] Optionally, a link or attachment means allows the end of the first line at the end of the second line inside the tubular beam, or outside the tubular beam.

[0070] Advantageously, the first element 10 is mounted to slide relative to the second element 20 so as to allow translation along the first direction Dl. In this case, the first retaining point 11 and the second retaining point 12 can, for example, be moved simultaneously along the first direction Dl while maintaining a constant, or substantially constant, length L between these two points. Thus, when translating in one direction along the first direction Dl, the first length L1 decreases and the second length L2 increases. When translating in the opposite direction of Dl, the first length L1 increases and the second length L2 decreases.

[0071] As illustrated in [Fig. 14], according to a fifth embodiment, the retaining device, in particular the first element 10, comprises a mast 18 having an axis extending parallel or substantially parallel to the principal axis A. Alternatively, the first element 10 comprises a fastening means 18' for attaching a removable mast 18. For example, the mast 18 is inflatable. By "inflatable," it is understood that the mast includes inflatable elements or parts, or even that it is entirely inflatable. The presence of the mast facilitates the launch of the kite 2 and / or allows for the formation of a rig if necessary.

[0072] Optionally, as illustrated in [Fig. 7], the first element 10 includes at least one third attachment point 35 of a third line 36 of the kite. For example, the third line 36 corresponds to the leading edges. For example, a fourth line is also added for launching and retrieving the kite.

[0073] Preferably, as illustrated in [Fig. 10], according to a third variant, the system 4 includes a means for limiting the deployment of the sail 5. For example, the limiting means includes a ring or hoop 8' capable of encircling at least part of the sail 5. The ring 8' is, for example, attached to a sending and / or retrieving line 33, which will be detailed later. Thus, preferably, the ring is not directly connected to the first line 6 and / or the second line 7.

[0074] Alternatively or in addition, the limiting means includes a sleeve or sock-type receptacle 8 suitable for storing at least a portion of the sail 5, for example, the first portion 5A of the sail. Preferably, the sleeve is attached to one end of the sail at a clew 50. A "sleeve" is understood to be a flexible piece, preferably open at both ends like a conduit, so that it can be threaded onto one of the sail's retaining lines. Alternatively, the sleeve may be closed at a first end 8A where the sail is attached. The sail is, for example, attached to the inside of the sleeve. The retaining line is, for example, attached to this first end 8A on the outside of the sleeve 8.

[0075] For example, the ring 8' is fixed to the second end 8B of the sleeve. Preferably, the sleeve has substantially a cone shape so that the apex of the cone at its first end 8A (truncated if the sleeve is open at both ends) is substantially at the clew point 50. Alternatively, the sleeve is made of the same material as the sail 5 so that the sleeve is not pierced at its first end 8A near the attachment to the clew point 50.

[0076] In [Fig. 9] illustrating the second variant comprising the first guiding means, the kite is shown in four positions, each corresponding to a phase during the launch or retrieval of the kite. The system 4 includes the line 33 for sending and / or retrieving and / or controlling the release during the kite's launch. The line 33 is attached at one end to a wingtip of the kite's sail 5, i.e., to the first part 5A near the attachment point of the second line 7, or even to this attachment point itself.

[0077] Preferably, a second end 34 of the sending and / or retrieval line 33 is free.

[0078] Alternatively, the sending / retrieving line can be fixed at the level of the second part 5B of the sail, in other words near the attachment of the first line 6.

[0079] For example, as illustrated in Figures 1 and 14, the second element 20 is fixed to a deck 9 of the floating craft 1. Alternatively, the second element 20 is the deck 9 of the floating craft 1. The principal axis A is preferably arranged in a vertical and longitudinal median plane M of the floating craft 1 illustrated in [Fig. 4].

[0080] Advantageously, as illustrated in [Fig. 4], the floating craft includes a means for changing course 30. For example, this is a rudder or equivalent. The craft further includes a means for transmitting the pivoting of the first element 10 about the main axis A, by means of the course change 30. Such a transmission means preferably includes at least one line and at least one pulley 32. For example, as illustrated in [Fig. 4], the transmission means includes two lines 31. For example, two pulleys 32 are arranged so as to transmit the pulls of the lines 31 to the rudder 30. The line(s) 31 wind around a cylindrical portion of the first element 10, preferably without friction. For example, the line 31 winds several times around the cylindrical portion of the first element 10 so as to eliminate any friction.Preferably, this cylindrical part has an axis coinciding or substantially coinciding with the main axis A of pivoting between the first element 10 and the second element 20. In this case, a pivoting between the first element 10 and the second element 20 in one direction is transformed into a tension on a line 31, a pivoting in the opposite direction being transformed into a tension on the other line 31, and consequently into . 30. Rudder pivoting. As a result, the floating craft is automatically steered according to the wind direction captured by the kite. Preferably, line(s) 31 are easily disengageable so as to eliminate the correlation between wind direction and rudder orientation and / or to recalibrate, modify, or refine this correlation.

[0081] Alternatively, as schematically illustrated in [Fig. 15], the system 4 enables the movement of a vehicle or machine 60, for example, a land vehicle, rolling and / or sliding. For example, the vehicle comprises a chassis 61, the second element being fixed to the chassis or being the chassis itself. Preferably, the main axis is arranged in the vertical and longitudinal median plane of the chassis 61 or of the land vehicle 60. In this case, a means for changing direction, in particular of the steering type comprising, for example, a steering wheel and a steering system for at least one steering wheel 62 of the vehicle, is connected to the system 4 so as to create a correlation between the wind direction and the heading of the vehicle, i.e., the orientation of at least one steering wheel.

[0082] Alternatively, as schematically illustrated in [Fig. 16], the system 4 is arranged on or at the level of an energy production platform 70, in particular for electrical energy. Thus, the platform includes the system 4 so as to produce energy. The second element 20 is preferably the platform or a base, slab, or frame 71 fixed relative to the platform. The platform includes an energy production means 79, for example, an alternator for generating electric current. Alternatively, or in addition, the platform includes a hydraulic pump. For example, the winding and / or unwinding of the line(s) drives the energy production means. For this purpose, the first line 6 and / or the second line 7 are connected to the production means.Preferably, each line is mounted on an alternator or hydraulic pump, and the unwinding of each line is done during a dynamic flight of the kite, i.e., in a context of maximum traction on each line.

[0083] Alternatively, the first element 10 is arranged so as to be mobile during the traction of the kite in order to allow the movements resulting from the traction on the first element to be recovered and these movements to be converted into usable energy.

[0084] Alternatively, or in addition, the means of production is connected to the first element 10 so that the pivoting of the first element 10 with respect to the second element 20 drives the means of energy production and transforms the energy from the pivotings.

[0085] Alternatively, or in addition, the retaining device 3 is fixed to the end of a lever arm, one end of which it moves. The other end of the arm then rotates or pivots about an axis, for example via a vertical or substantially vertical axis system. The movement of the other end is preferably slowed down or controlled by so as to generate energy such as electricity or hydraulic power.

[0086] An execution method of using system 4 will now be described.

[0087] As a reminder, the system 4 is for example intended to tow a floating craft 1, or to move a rolling and / or sliding land vehicle 60, or to produce energy on a platform 70.

[0088] In the following, as illustrated in figures 2, 8, 9, 10 and 11, action is mainly taken on the second line 7.

[0089] As illustrated in [Fig. 2], a prior, at least partial winding of the first part 5A and / or part of the second line 7 is provided. This winding is carried out on, or around, the first guiding means 15, preferably in the shape of a diabolo with axis B substantially orthogonal to the first direction D1. Advantageously, the first guiding means is arranged, in particular fixed, on the first element.

[0090] Alternatively, according to the first variant illustrated in [Fig.8], a prior fitting of the first part and the second line within the first hollow beam type element 14 is provided (lower representation on the three representations of this figure).

[0091] Alternatively, according to the second variant illustrated in [Fig. 9], the launch line 33 first secures the first part 5A of the kite while the second line 7 is slack. Note that the launch and / or landing line 33 is attached to the kite at the same point, or substantially at the same level, as the second line 7 (case illustrated in [Fig. 9]). Thus, before launching, the line 33 secures most of the kite 2 and the line 7 is inside the ring 15. This line 33 may optionally be partially wound around a pulley located away from the ring and may optionally be connected to a winch. When the second part 5B of the sail is in the wind, with the first line 6 deployed, the tension of the line 33 contributes to keeping the kite 2 within the first guiding means 15. As a reminder, this first guiding means 15 is fixed on the first element 10.

[0092] Alternatively, according to the third variant illustrated in [Fig. 10], the first part 5A of the sail is pre-fitted into the deployment-limiting means, for example a sleeve 8, and / or a ring 8' prevents the deployment of the first part, particularly at the large opening of the sleeve. Line 33 is preferably connected to ring 8' in this case. Thus, by acting on line 33, the ring is gradually moved and, preferably, the first part 5A is extracted from the sleeve 8.

[0093] Alternatively, according to the fourth variant illustrated in Figures 11 to 13, the first part 5A of the sail is pre-constrained under, or against, the a second guiding means 25 so as to prevent the first part 5A from being caught by the wind. As a reminder, the second guiding means is preferably of the ring or fixed hoop type in relation to the second element 20.

[0094] In a first step, the second line 7 is partially unfurled. As a reminder, line 7 is attached to sail 5 at the level of the first part 5A. Simultaneously, or substantially simultaneously with the unfurling of the second line 7, the first part 5A of sail 5 is kept out of the wind by means of the various means described in the embodiment and variants.

[0095] Consequently, the second part 5B of the sail 5 catches enough wind to remain aloft. This unwinding of the line 7 is preferably facilitated by acting on the first guiding means 15 and / or on the second guiding means 25 and / or on the cleat 17 of the second line and / or on the unwinding means 13.

[0096] The unwinding of line 7 is then continued so that the first part 5A of the sail 5 catches the wind. To do this, line 7 is released by opening the cleat 17 and / or by the second retaining means 12 and / or by the winding / unwinding means 13.

[0097] In the second variant illustrated in [Fig. 9], releasing line 33 allows the kite to be progressively moved from the first guiding means and deployed. Once the sail is fully removed from the first guiding means 15, line 33 is then slackened to tension the second line 7, the main tow line. Note that line 33 can be kept in place during flight, or detached from the sail, or recalled if it is doubled or if its use is not necessary for retrieving the sail. If the sail extends to a length greater than that available on deck 9, or on the frame 61, or on or around the platform 70, a system of guides using parts of revolution (pulleys and / or diabolo-shaped elements) allows the storage length for the sail to be increased before launching or after retrieval.

[0098] At the end of this unwinding action, the entire sail 5 catches the wind. Note that this unwinding step can be carried out at the desired speed, i.e., quickly if conditions permit, or slowly otherwise.

[0099] Next, the wind is used to propel the boat or land vehicle or to generate power on the platform. The sail 5 creates a force on the first element 10. The pivot joint of the first element 10 relative to the second element 20 then allows the second element 20 to recover this force regardless of the wind direction. For example, the first direction DI automatically orients itself orthogonally to the wind direction. This orientation, which causes the first element to pivot relative to the second element, results in particular from the difference E (Figures 3 and 5) between the pivot axis A and the direction D1. Indeed, this difference E creates a lever arm. Alternatively, preferably, especially in the case of a link between the first element and the means of changing course or direction for example, the first direction DI and the wind direction are not orthogonal.

[0100] Advantageously, in the presence of the braking means 40, the braking of the pivoting and / or the blocking of the pivoting of the first element 10 relative to the second element 20 makes it possible to recover energy.

[0101] Following the wind-powered phase, a partial furling step is carried out on the second line 7 so that the first part 5A of the sail 5 is no longer exposed to the wind. This procedure returns the sail to the situation prior to the unfurling of the second line 7, according to the embodiment and variations illustrated. Preferably, this step is performed while the second part 5B of the sail 5 remains exposed to the wind.

[0102] The second line is then furled so that the second part 5B of the sail 5 no longer catches the wind or catches very little wind. In other words, it is furled, for example, until the angle of the wind in the sail 5 generates little or no force along the direction F on the first element (direction illustrated in Figures 5 and 6).

[0103] This winding takes place on, or around, the first guiding means 15.

[0104] Alternatively, according to the first variant illustrated in [Fig.8], the first part 5A of the sail and the second line 7 are inserted little by little within the first hollow beam type element 10 14 (the two upper representations on the three representations of [Fig.8]).

[0105] Alternatively, according to the second variant illustrated in [Fig.9], action is taken on the sending line 33 to bring back the first part 5A of the sail, the second line 7 then becoming loose, i.e. relaxed.

[0106] Alternatively, according to the third variant illustrated in [Fig. 10], the first part 5A of the sail is fitted into the sleeve-type limiting means, for example by acting on the line 33, in particular via the ring 8' which surrounds the sail at the level of the first part 5A and thus prevents it from catching the wind. Thus, by acting on the line 33 while winding the line 7, the ring is gradually moved so as to reduce the surface area of ​​the sail 5 catching the wind.

[0107] Alternatively, according to the fourth variant illustrated in Figures 11 to 13, the first part 5A of the sail is gradually slid under, or against, the second guiding means 25 so as to prevent it from catching the wind. The surface area of ​​the sail catching the wind is thus reduced until it has only a weak, or even very weak, pull, or even no pull from the kite.

[0108] Possibly, certain variants can be combined.

[0109] Thanks to the solution, the takeoff and / or recovery of the kite are facilitated. Furthermore, the kite's flight can be optimized. As mentioned previously, it becomes possible to correlate the wind direction with the heading of the boat or craft being towed by the kite. In addition, the adjustments allow the kite to maintain stability even if the angle between the wind direction and the heading of the boat or towed craft changes.

[0110] The distance E between the point of application of the aerodynamic force F and the principal axis A allows for autonomous pivoting, i.e., without external assistance, of the first element 10 relative to the second element 20 in the direction of the wind. Furthermore, adjustments to the first length L1, and / or the second length L2, and / or the distance E, allow the resultant F of the kite's traction forces transmitted by lines 6 and 7 to converge, or substantially converge, at the level or substantially at the level of an intersection between a pivot plane between the first and second elements 10, 20 and the principal pivot axis A. The adjustable distance E allows, in particular, adaptation to different angles of incidence α of the kite's flight, for example, between 1 degree and 60 degrees, notably on the order of 15 degrees.Note that the greater the distance E between the point of application and the main axis A, the more easily and quickly the first direction Dl, and consequently the first element 10, orients itself perpendicularly to the direction of the wind.

[0111] The solution allows the vessel to maintain its course relative to the wind at a constant angle through the weathervane effect of the kite's pull. This is particularly the case when the braking and / or locking and / or drive means 40 of the pivot linkage is deactivated or not installed.

[0112] Furthermore, since the lengths L1 and L2 are adjustable, and the line lengths, particularly the second line, are also adjustable, it is easy to control the wing's flight and consequently to extract maximum traction force if needed. More specifically, adjusting the spacing between the attachment points 11 and 12 via the lengths L1 and L2 allows for both static flight (attachment points 11 and 12 of lines 6 and 7 spaced apart) and dynamic flight (attachment points 11 and 12 of lines 6 and 7 close together).

[0113] The solution offers simpler management of takeoffs, flights and recoveries of a traction kite equipped with a sail having a large wingspan, for example whose wingspan is more than twice the length L extending between the retention points 11, 12. In the case of a kite using a small distance between the retention points 11, 12, the solution is also viable.

[0114] It should be noted that adjusting the lengths L1, L2 and possibly the gap E preferably allows the direction F (Figures 5 and 6) of the kite's traction forces to pass at, or approximately at, the intersection between the main axis A and the upper surface of the deck 9 of the boat, so as to minimize mechanical stresses at this point. This avoids the creation of a slack arm lever due to tensile forces tending to pull away, for example, a base acting as the first element 10, relative to the second element 20. Thus, preferably, an angle a extends between the main axis A and the direction of the forces F, as illustrated in [Fig.5].

[0115] Preferably, the materials used to obtain the ring 8' and / or the first guide means 15 and / or the second guide means 25 and / or the pulleys and / or cleats and / or the first and second elements 10, 20 and / or the mast 18 and / or the rolling and / or sliding means 19, 29; 19', 29' withstand humid and / or saline conditions. For example, these parts are based on, or comprise, stainless steel and / or aluminum and / or fiberglass and / or carbon fiber and / or coatings protecting them from harsh climatic conditions.

[0116] In summary, the device allows for managing changes of course and / or tacks and / or gybes without changing the attachment points. It allows for easy adjustment of the kite's pitch, line length, and the stability and instability of the wing or sail. Downwind, it remains easier to excite the wing around its equilibrium position (dynamic flight). This results in greater aerodynamic force thanks to the increase in apparent wind, which is also better oriented, particularly more horizontal, so that the traction component is maximized.

[0117] In addition, the solution makes it easy to coordinate the setting of the firing points with a heading and the wind direction.

[0118] As a note, the solution therefore achieves the desired objective of providing a restraint device for a traction kite, in particular intended for towing a floating craft, improving the take-off, flight and recovery of the kite and offers the following advantages: - it is economical; - it is easy to install on a boat, land vehicle, or existing platform.

Claims

Demands

1. Kite (2) retention device (3), characterized in that the device (3) comprises: - a first element (10) comprising a first retention point (11) and a second retention point (12) each intended to retain a line (6;7) of such a kite (2), the first and second retention points (11, 12) defining a first direction (Dl) passing through, or substantially through, the first and second retention points (11, 12), the first element (10) being a beam (14), in particular a tubular beam, in particular of circular section, - a second element (20) of frame type, the first element (10) being mounted pivoting relative to the second element (20) around a principal axis (A) vertical or substantially vertical, and / or the principal axis (A) extending orthogonally or substantially orthogonally to the first direction (Dl), the first and second retention points (11, 12) being arranged on either side of a first plane (PI) comprising the principal axis (A) and being perpendicular to the first direction (Dl).;

2. Device (3) according to the preceding claim, characterized in that a gap (E) extends between the main axis (A) and the first direction (Dl), the gap (E) being fixed or adjustable.

3. Device (3) according to any one of the preceding claims, characterized: - in that the device (3) comprises a means (40) for braking or locking or pivoting the first element (10) relative to the second element (20), or - in that a first length (L1) between the first retention point (11) and the first plane (PI) is variable, in particular adjustable, or in that a second length (L2) between the second retention point (12) and the first plane (PI) is variable, in particular adjustable, or - in that the first element (10) comprises a first means for retaining (16) a first line (6), in particular of the stop cleat type, or a second means for retaining (17) a second line (7), in particular of the stop cleat type, or - in that the first element (10) comprises at least a third retention point (35) of a third line (36) of such a kite (2).

4. Device (3) according to any one of the preceding claims, characterized in that the first element (10) comprises a winding and unwinding (13) of a first line (6) and / or a second line (7) of such a kite (2), including a winding and unwinding means arranged at the level of the first plane (PI) and / or at the level of the first direction (Dl), including a winding and unwinding means (13) comprising at least one winch and / or winch and / or jack and / or pilot actuator.

5. A device (3) according to any one of the preceding claims, characterized in that: - the first element (10) comprises sliding and / or rolling elements (19) and the second element (20) comprises a sliding and / or rolling support (29), in particular a sliding and / or rolling support (29) in the form of a circular ring, the sliding and / or rolling support (29) cooperating with the sliding and / or rolling elements (19), or - the first element (10) comprises a sliding and / or rolling support (19'), in particular a sliding and / or rolling support (19') in the form of a circular ring, and the second element (20) comprises sliding and / or rolling elements (29'), the sliding and / or rolling support (19') cooperating with the sliding and / or rolling elements (29'), so as to provide a pivot joint about the principal axis (A) between the first element (10) and the second element (20).

6. Device (3) according to any one of the preceding claims, characterized in that the device (3) comprises a first guidance means (15) for the deployment and recovery of such a kite (2), the first guidance means (15) being fixed on the first element (10), in particular between the first retention point (11) and the second retention point (12).

7. Device (3) according to the preceding claim, characterized in that the first guiding means (15) comprises a part of revolution, in particular mounted to rotate about a secondary axis (B), in particular a secondary axis (B) orthogonal to the first direction (Dl), so as to allow the sliding and / or rolling and / or winding of at least a part of a sail (5) of such a kite (2).

8. Device (3) according to any one of the preceding claims, characterized in that the device (3) comprises a second guidance means (25) for the deployment and recovery of such a kite (2), the second guiding means (25) being fixed on the second element (20).

9. Device (3) according to any one of the preceding claims, characterized in that the first element (10) comprises a tubular beam open at least one of its ends (14A, 14B) so as to allow the entry of a sail (5) of such kite (2) into the tubular beam via at least one end (14A) and the exit of a sail (5) of such kite (2) from the tubular beam.

10. Device (3) according to any one of the preceding claims, characterized in that the first element (10) is mounted sliding relative to the second element (20) so as to permit translation along the first direction (Dl).

11. Device (3) according to any one of the preceding claims, characterized in that the first element (10) comprises: - a mast (18) having an axis extending parallel or substantially parallel to the main axis (A), in particular an inflatable mast (18), or - a fastening means (18') for a removable mast, so as to facilitate the take-off of such a kite (2) and / or to allow the formation of a rig.

12. System (4) comprising a device (3) according to any one of claims 1 to 11, characterized in that the system (4) comprises: - a kite (2) comprising a sail (5), - a first line (6) connected to the first attachment point (11) and to the sail (5) and a second line (7) connected to the second attachment point (12) and to the sail (5), the length (L) between the first attachment point (11) and the second attachment point (12) along the first direction (Dl) being in particular equal to, or substantially equal to, the wingspan (EN) of the sail (5), the wingspan (EN) being in particular measured parallel or substantially parallel to the first direction (Dl).

13. System (4) according to the preceding claim, characterized in that the system (4) comprises a means for limiting (8) the deployment of the sail (5), in particular a ring for encircling the sail (5) and / or a sock for storing at least a part of the sail (5).

14. System (4) according to any one of claims 12 or 13, characterized in that it comprises a kite (2) sending and / or retrieving line (33) attached at a first end at the level of an ear of the sail (5) of the kite (2) near the attachment of the first line (6) or of the second line (7), the second end of the send and / or retrieve line (33) being free.

15. Floating craft (1), in particular boat or vessel, characterized in that the floating craft (1) comprises a system (4) according to any one of claims 12 to 14, the second element (20) being fixed on a deck (9) of the floating craft (1) or being a deck (9) of the floating craft (1), the main axis (A) in particular being arranged in a vertical and longitudinal median plane of the floating craft (1).

16. Land vehicle (60), in particular a rolling and / or sliding land vehicle, characterized in that the land vehicle (60) comprises a system (4) according to any one of claims 12 to 14, the second element (20) being fixed to a chassis of the rolling and / or sliding land vehicle or being a chassis of the land vehicle, the main axis being in particular arranged in a vertical and longitudinal median plane of the chassis of the land vehicle.

17. Floating craft (1), in particular boat or ship, according to claim 15, characterized in that the floating craft comprises - a means for changing the heading (30) of the floating craft, in particular a rudder, - a means for transmitting (31) the pivoting of the first element (10) around the main axis (A) by means of changing the heading (30), in particular a transmission means comprising at least one line and at least one return pulley (32), so as to steer the floating craft in the direction of the wind captured by the kite (2).

18. Land machine (60), in particular a rolling and / or sliding land machine, according to claim 16, characterized in that the land machine comprises: - a means for changing the direction of the land machine, in particular a steering mechanism, - a means for transmitting (31) the pivoting of the first element (10) around the main axis (A) by means of changing direction, in particular a transmission means comprising at least one line and at least one return pulley (32), so as to steer the land machine according to the direction of the wind captured by the kite (2).

19. Energy production platform (70) comprising a system (4) according to any one of claims 12 to 14, characterized in that it comprises a means of producing energy, in particular an alternator for producing electrical energy or a hydraulic pump, connected to the first line (6) and / or to the second line (7) such that the winding and / or unwinding of the line(s) drives the means of producing energy, and / or connected to the first element (10) such that the pivoting of the first element (10) relative to the second element (20) drives the means of producing energy.

20. A method of using a system (4) according to any one of claims 12 to 14, the system (4) being intended to tow a floating craft (1) or a rolling and / or sliding land vehicle or to produce energy on a platform, characterized in that it comprises the following steps: - one of the first and second lines (6, 7) is partially unfurled while keeping a first part (5A) of the sail (5) out of the wind so that a second part (5B) of the sail (5) catches enough wind to stay in the air, in particular by means of the first guiding means (15) and / or the second guiding means (25), - the unfurling of the line (6;7) so that the first part (5A) of the sail (5) catches the wind progressively until the sail (5) catches the wind, - the force of the wind is used to pull the craft or land vehicle or to produce energy on the platform, the sail (5) creating a force on the first element (10), the pivot joint of the first element (10) with respect to the second element (20) allowing the recovery of the force by the second element (20) regardless of the direction of the wind, the first direction (Dl) being oriented orthogonally to the direction of the wind, possibly by braking the pivoting and / or blocking the pivoting and / or causing the first element (10) to pivot with respect to the second element (20), - one of the first and second lines (6;7) so that the first part (5A) of the sail (5) no longer catches the wind, in particular by wrapping around the first guiding means (15), the second part (5B) of the sail (5) remaining in the wind, - the wrapping of the line continues so that the second part (5B) of the sail (5) no longer catches the wind.;

Images