EP4097001B1 - Wing rig - Google Patents

Description

The invention relates to a foil wing for wind-powered sports, for example wing foiling, according to the preamble of patent claim 1.

Such a hand-supported wing rig, also called foilwing or wingfoil because it can be used particularly well together with a foilboard, is described on the Internet under the name "Slingwing", see also https://foil-magazine.com/wing-surf -decouvrez-une-nouvelle-dimension-du-sup-avec-la-swing-de-f-one/. In principle, it is a wing similar to a kite with a front tube forming a leading edge and a single strut, which are inflatable. There are holding loops on the central strut and on the front tube, which the user can use to hold the inflatable wing rig during use, for example when foiling or ice surfing or skiing.

This inflatable wing rig is severely deformed during use, especially at the high speeds achieved when foiling, and thus the aerodynamics are impaired.

Another disadvantage of this known wing rig is that the holding loops are designed to be flexible, so that precise guidance of the wing rig, for example during tacks and gybes, where a hand change is required, is difficult. In addition, these straps are firmly attached to the leading edge or strut, making them difficult to replace or adjust.

Solutions are also known in which rigid handles are attached to the leading edge or strut instead of the flexible holding loops. However, due to the large handles, such wing rigs require a considerable amount of storage space when disassembled with the air drained (deflated).

In the US 4,563,969 A rigid wing rig is shown in which the leading edge and a boom are formed by a complex tube construction that stretches a canvas (canopy). The leading edge is curved in an arc when viewed from above. The tree is supported by a variety of struts on the leading edge. These struts are designed in such a way that they give the leading edge a concave structure in a front view, ie seen in the flow direction of the wing rig, according to which the end sections (tips) of the wing rig are flared upwards from a central apex of the leading edge.

A disadvantage of this solution is that due to the complex structure of the boom and the leading edge, the total weight of the wing rig is very high, so that use for water sports is only possible with appropriate buoyancy devices. Another disadvantage is that setting up and dismantling the wing rig takes a lot of time due to the complex tube structure. This hard tubular structure of the leading edge and the boom also poses a significant risk of injury to the user in the event of a skidding fall.

A similar rigid wing rig is in the WO 95/05973 A1 shown. In this solution, too, the leading edge and the tree are formed by a complex tube structure. The construction presents the same disadvantages as the wing rig according to the one discussed above US 4,563,969 .

In print DE 31 40 685 A1 A rigid wing rig is described in which the leading edge is formed by two V-shaped masts that are connected to each other via a central boom and support struts. This wing rig also has a considerable weight due to its tubular structure, which makes handling significantly more difficult, especially during water sports.

In the document US 5,448,961 A flat wing rig with a closed frame structure is described - such a solution is also unusable for water sports due to the high weight, the time-consuming assembly/disassembly and the risk of injury.

The German disclosure document DE 10 2015 117 708 A1 discloses a windsurfing rig that is designed with an inflatable mast and an inflatable cross brace, which together span a sail. This windsurf rig has a mast base integrated into the mast, which allows it to be anchored to a board. Such a concept cannot be used as a hand-supported wing rig. There are holding loops in the form of cords attached to the windsurfing rig.

In which also goes back to the applicant DE 10 2019 101 656 A1 a wing rig with an inflatable front tube and a rigid boom is disclosed, which together span a sail, the front tube being positioned in a V-shape in the direction of flow. The rigid tree is detachably attached to the front tube. The disadvantage of such a concept is that the weight of the boom extending from the front tube to the leading edge of the sail is relatively large, so that in the water the buoyancy of the wing rig in the middle area is relatively low. The advantage of this solution is that the boom allows the wing rigging to be held very variably depending on the user's preference. No additional attachment of handles is required.

In the subsequently published publication DE 10 2020 122 145 A1 The aforementioned concept is further developed in such a way that such a boom is attached to an inflatable center strut of the wing rig.

In contrast, the invention is based on the object of creating a foil wing for wind-powered sports that enables easy handling with little storage space.

This task is solved by a foil wing with the features of patent claim 1.

Advantageous developments of the invention are the subject of the subclaims.

The foil wing according to the invention, which is designed in particular for riding with foil boards, has an inflatable front tube, from which an inflatable center strut extends.

This center strut is held by the user to guide the foil wing and, together with the front tube, stretches a canopy (sailcloth), which, so to speak, forms the sail area of the foil wing. For optimal handling of the foil wing during maneuvers and while driving, according to the invention at least one handle is provided, which is attached to the front tube or to the center strut. According to the invention, this handle is designed to be removable, so that the foil wing only takes up very little storage space when the handles are removed. Furthermore, for example, different handles can be set, which are selected depending on the user's preferences.

For example, it is possible to attach either rigid or flexible handles. The concept makes it possible, for example, to provide a rigid handle in the middle of the front tube, while the handles in the center strut area are designed to be flexible.

In one embodiment of the invention, the at least one handle is approximately U-shaped, with the end sections being attached to the front tube or to the center strut using suitable adapters.

According to the invention, these adapters are clamping adapters that act in a non-positive or positive manner, for example with locking bolts or other adapters designed for clamping, or even mixed forms.

In a preferred embodiment of the invention, the adapter is designed with an adapter console which is attached to the foil wing and which has, for example, a threaded bushing to which a support plate of the handle can be attached by means of a screw. The adapter console (patch) can be made of a flexible material, for example TPU.

The support of the handle is optimal if the adapter console is curved according to the diameter of the front tube or center strut, so that the support plate is supported flatly on the outer skin of these elements. The adapter console can be designed as a flexible patch.

According to the invention, the adapter is designed so that it can be clamped to an end section of the handle. Such a variant makes it possible to first insert the handle into the adapter without pretensioning and then to tension it using suitable measures.

This tensioning is done by inflating the front tube and/or the center strut, whereby the handle is first placed on the adapter when the foil wing is not inflated and then a positive/positive connection and thus tension is created by pumping it up. Such an exemplary embodiment is characterized by a minimal outlay in terms of device technology, since, for example, the adapter can only be designed as a loop (more details will be explained below) into which the end section of the handle is inserted.

Advantageously, the adapter can extend over a section of the front tube and/or the center strut (depending on which of these components the handle is attached to), so that the respective end section of the handle is in the area of the adapter on the one hand and of the outer skin of the front tube or the centerstrut, on the other hand, can be used in a limited area, with the end section being tensioned against the adapter after the front tube or the centerstrut has been inflated, so that the end section of the handle is held in a non-positive and positive manner.

As indicated above, in a very simple exemplary embodiment, the adapter can be designed in a loop shape from a band or belt-like material that is connected to the center strut or the front tube. Instead of a band-like material, a molded part or the like can of course also be used.

The design of the handles is particularly flexible if they are designed in several parts with a web and at least one support arm. It is possible, for example, to use different handle concepts by replacing the web and/or the support arm.

It is preferred if the aforementioned support plate is arranged at an end section of the respective support arm.

In one embodiment of the invention, it is provided that the support plate or a web of the handle inserted or attached to the adapter is designed with an end section that protrudes beyond the adapter, so that the user can easily check that the handle is in place in a predetermined manner positioned on the adapter.

The support of the handle is optimal if the support plate is curved according to the diameter of the front tube or center strut, so that the support plate is supported flatly on the outer skin of these elements.

In one embodiment of the invention, the handle can be clamped to the respective adapter on the one hand via a support arm and on the other hand via the web. In an alternative solution, the handle has two support arms, each of which is braced with an adapter.

The weight of the handle is particularly low if the web is tubular, with each support arm being designed with a connecting piece that is immersed in the tube or surrounds it in sections, so that reliable positioning is guaranteed. The support arms and the web can be connected in a force-fitting and/or form-fitting manner. The bridge can be straight or curved.

In one embodiment of the invention, two handles are arranged converging in an approximately V-shape, with the converging area being attached to the center strut and the respective end sections of the handles being attached to the front tube are. These two V-shaped handles make it easier to carry out the maneuvers described above or to hold the foil wing while foiling.

For clarification, it should be noted that the term “adapter” can be understood to mean any device/device that is suitable for setting a handle on the foil wing.

• Figur 1 eine Prinzipdarstellung eines Foilwings, das zum Antreiben eines Foilboards verwendet wird;
• Figur 2 eine dreidimensionale Darstellung eines Foilwings, in der beispielhaft die Positionen von auswechselbaren Handles mit U-Profil dargestellt sind;
• Figur 3 eine Teildarstellung eines Ausführungsbeispiels eines erfindungsgemäßen Foilwings mit einer Griffmulde;
• Figur 4 eine Detaildarstellung des Foilwings gemäß Figur 3;
• Figur 5 eine weitere Detaildarstellung eines Handles gemäß Figur 4, der einerseits an einer Centerstrut und andererseits an der Fronttube befestigt ist;
• Figuren 6, 7 Ansichten eines Stützarms des Handles gemäß den Figuren 3 bis 5;
• Figur 8 eine Variante des Ausführungsbeispiels gemäß Figur 3, wobei die Handles jeweils nur an der Centerstrut bzw. der Fronttube befestigt sind und
• Figuren 9, 10 eine Detaildarstellung eines Handles des Ausführungsbeispiels gemäß Figur 8.

Preferred exemplary embodiments of the foil wings according to the invention are explained in more detail below using schematic drawings. Show it:

• Figure 1 a schematic diagram of a foil wing used to propel a foil board;
• Figure 2 a three-dimensional representation of a foil wing, in which the positions of replaceable handles with a U-profile are shown as an example;
• Figure 3 a partial representation of an exemplary embodiment of a foil wing according to the invention with a recessed grip;
• Figure 4 a detailed representation of the foil wing according to Figure 3 ;
• Figure 5 a further detailed representation of a handle according to Figure 4 , which is attached to a center strut on the one hand and to the front tube on the other;
• Figures 6, 7 Views of a support arm of the handle according to the Figures 3 to 5 ;
• Figure 8 a variant of the exemplary embodiment according to Figure 3 , whereby the handles are only attached to the center strut or the front tube and
• Figures 9 , 10 a detailed representation of a handle of the exemplary embodiment Figure 8 .

In Figure 1 the use of a foil wing 1 according to the invention to drive a foil board 2 is shown. A surfer 4 simply holds the foil wing 1 with his hands and adjusts it with reference to the wind depending on the desired direction of travel (upwind, half-wind, downwind) or the buoyancy to be set, for example when jumping or adjusting the ride height.

The Foilwing 1 has an inflatable front tube 6 with an upstream leading edge 7, which in the top view (from above in the Figures 1 and 2 ) is approximately arcuate, preferably approximately delta, C or U-shaped and with its tips 8, 10 up to a Trailing Edge 12 of a Canopy 14 of the Foilwing 1. As explained below, this canopy 14 is on the one hand from the front tube 6 and on the other hand from a tree/or. a center strut (see Figure 2 ) clamped. The surfer 4 holds the foil wing 1 mainly on the tree/centerstrut, which is pointing downwards (view from Figure 1 ) cantilevers out. The front tube 6 is preferably positioned approximately V or U-shaped both in the top view and in a front view - seen in the direction of flow - with the V/U expanding upwards in the front view, ie away from the surfer. How Figure 1 removable, the trailing edge 12 and thus the entire canopy surface 14 is also V-shaped (or U-shaped) in the front view.

The reference numeral 16 denotes, for example, a handle which is arranged centrally in the area of the front tube 6. This handle 16 is gripped, for example, when the foil wing 1 is held in the wind while driving on a wave without propulsion. This handle 16 is also used when handling the foil wing 1 on land or when starting or ending a trip (water landing).

As explained below, additional handles can be positioned on the Foilwing 1. A special feature of the handle 16 is that it is interchangeably attached to the foil wing 1, for example here to the front tube 6 or the center strut 18.

According to the representation Figure 1 A safety leash 17 is also shown, which is attached, for example, to the wrist of the surfer 4 and whose other end section engages the front tube 6.

Figure 2 shows a three-dimensional view from below of a foil wing 1 according to Figure 1 . In this illustration you can see the above-mentioned tree, which in this exemplary embodiment is designed as an inflatable center strut 18. This is attached to the front tube 6. The front tube 6 is designed similar to the front tube of a kite and is connected to the inflatable center strut 18 via a one-pump system (not shown), so that both have a common valve Air can be filled. According to the representation Figure 10 the handle 16 described above is shown, which bridges a vertex 20 of the front tube 6 in the direction of flow.

In the exemplary embodiment shown, the center strut 18 is designed to be curved upwards, with an inflow-side strut section 22 connected to the front tube 6 being connected to the front tube 6 in the area of the apex 20. Following this strut section 22, which is positioned approximately at right angles to the front tube 6, the center strut 18 is curved upwards in a middle section 24, towards the canopy 14 and then merges into a tapered end section 26, which extends to the trailing edge 12. The canopy 14 is at least partially connected to the center strut 18, so that the profile described above is achieved. The middle section 24 and the downstream end section 26 are connected to the canopy 14. There is a distance 27 between the front strut section 22 and the canopy 14, which remains free or is filled with a cloth wall. The applicant reserves the right to make his own independent claim to the arched inflatable Centerstrut 28.

In the exemplary embodiment shown, two V-shaped handles 28a, 28b are arranged in the area of the strut section 22, which are attached to the strut section 22 with their converging end sections. The remote end sections of the handles 28a, 28b are each on the underside (view Figure 2 ) of the front tube 6 attached.

Examples are then: Figure 2 three further handles 30a, 30b, 30c according to the invention are shown, which are distributed along the centerstrut 18 from the connection of the two aforementioned handles 28a, 28b towards the tapered end section 26 of the centerstrut 18. These handles are also arranged downwards, pointing towards the driver (view from Figure 2 ).

Of course, such handles can also be attached to other positions on the foil wing 1. A special feature is that these handles are easily and interchangeably held on the center strut 18 of the foil wing 1. Interchangeable means a position fixation that can be loosened or fixed with little effort and with a simple tool, for example a screwdriver or wrench. It is not necessary to unpick seams or loosen rivets or an adhesive layer or the like.

In this way, it is possible, for example, to provide different handles at different positions of the foil wing 1, whereby this positioning can be varied according to the user's preferences. It simply needs to be ensured that appropriate receptacles are provided on the foilwing side for fixing the position of the handles 30.

The handles 30 can be rigid or flexible. In the illustrated embodiment, the handles 30 are rounded, approximately U-shaped or V-shaped.

In principle, the handles 16, 28, 30 can be designed in one piece or with a different geometry.

Instead of the rigid handles 16, 28, 30, flexible handles or mixed handle types can also be positioned.

In one embodiment of the invention, it is intended to provide a plurality of adapter consoles along the front tube 6 and/or the center strut 18 so that the handles can be positioned individually.

Figure 3 shows an exemplary embodiment of a foil wing 1 according to the invention, in which the center strut 18 in the area adjacent to the front tube 6 is reduced in diameter d compared to a section with diameter D adjacent to the trailing edge 12, so that a recessed grip 70 is formed by this downgrading, in the area of which two handles 30a, 30b according to the invention and a conventional holding loop 72 arranged between them are arranged. The handles 30a, 30b accordingly extend approximately as an extension of the

Area of the center strut 18, which is designed with a diameter D. A special feature of the handles 30a, 30b is that they are clamped to the center strut 18 or the front tube 6, this tension being brought about by inflating the foil wing 1. When the air has been released, the handles can be attached to the front tube 6 or the center strut 18 without any tools and without significant effort, so that the handles 30a, 30b can be mounted and released in an extremely simple manner.

The handle 30a is with the in Figure 3 Left end section is attached to the area 74 with a larger diameter D on the one hand and on the other hand approximately in the middle within the grip recess 70. For attachment, adapters 76, 78 are formed on the center strut 18, via which the handle 30a is fixed in position. Specifically, in the exemplary embodiment shown, the two adapters 76, 78 are each formed by webbing loops 80, 82, which are sewn with their respective end sections to the outer skin of the center strut 18 and which bulge like a bridge, so that a pass-through area for a handle section is formed. At the in Figure 3 In the exemplary embodiment shown, the handle 30a has a support arm 34 on the right end section, which is based on the Figures 6 and 7 is explained in more detail below.

As in the exemplary embodiments described above, the support arm 34 is connected to a tubular web 32 which extends to the area 74 with the adapter 76. The tubular end section 84 of the web 32 dips into the loop 80 and passes through it, the end section 84 protruding from the loop 80 being fixed in position via a cap 85 into which the end section 84 is immersed, so that its movement is as shown Figure 3 limited to the left. As will be explained in more detail below, the support arm 34 appears as shown Figure 3 from the right into the loop 82, so that the handle 30a can be mounted simply by pushing it from the right into the loop 80 or the loop 82.

The further handle 30b is in a corresponding manner via a support arm 36 and via a webbing loop 86 on the center strut 18 and with the in Figure 3 right end section of the web 32 and another webbing loop 88 on the front tube 6 set. An axial displacement beyond the front tube 6 is prevented, as with the handle 30a, by a cap 90 which is attached to the loop 88. The difference in diameter between the front tube 6 and the center strut 18 in the connection area of the handle 30b is so large that there is enough clear width to grip the web 32. The handle 30b is attached by pushing it into the adapters 76, 78 in the direction of the front tube 6.

The conventional holding loop 72 is not detachably mounted between the two support arms 34, 36 and enables the foil wings 1 to be handled even when the handles 30a, 30b are removed. This area is enlarged in the Figure 4 shown. In this illustration you can clearly see the two webbing loops 82, 86, each of which is sewn with its end sections to the outer skin of the center strut 18 and which bulges in an arc to form a receiving space 92 and 94 for a part of the respective support arm 34, 36 to build.

The structure of the support arms 34, 36 is exemplified using Figures 6 and 7 explained, which show an individual representation of the support arm 34. Accordingly, they each have a support plate 48, which is curved according to the diameter D of the center strut 18 or the diameter of the front tube 6, so that a flat contact with these components is guaranteed. According to the representation Figure 6 The diameter D of the area 74 of the center strut 18 is shown as an example. A support arm 36 is attached to the side of the support plate 48, which in the exemplary embodiment shown is approximately U-shaped with an oblique base, so that the connecting piece 58 formed on the end section of the support arm 36 runs approximately at a parallel distance to the apex of the support plate 48. As in the exemplary embodiments described at the beginning, the connecting piece 58 is stepped back, so that a radial contact shoulder 68 is formed in the transition area to the section with a smaller cross section. The diameter e of the stepped-back area then corresponds to the inner diameter of the attached web 32, which rests with its end face on the contact shoulder 68 of the connecting piece 58 in the assembled state. In the illustrated embodiment, the support arm 36 is made of fiber-reinforced plastic. In principle, the support arm 36 can also be made from made from a different material or using a generative process (3D printing).

How particularly good in Figure 5 visible, the width b of the webbing loop 86 is slightly smaller than the width B (see Figure 7 ) of the support plate 48 is formed, so that in the assembled state the support plate 48 (and of course the other support plates) protrudes from the webbing loop 86 with a projection 96. To fix the position, this projection 96 can be provided with a step which lies against the associated webbing loop 86 in the pull-out direction and thus makes it even more difficult for the support plate 48 to be accidentally pulled out of the webbing loop 86.

As with the handle 30a, the end portion of the web 32 remote from the webbing loop 86 (see in particular Figure 5 ) inserted into the webbing loop 88 and secured in the axial direction via the cap 90.

Figure 8 shows an exemplary embodiment in which the two handles 30a, 30b are only attached to the center strut 18. In this exemplary embodiment, this is not designed with a recessed grip 70 but in a conventional manner, so that there is no step in the transition area to the front tube 6 that can be stretched over by a handle.

In this embodiment, each of the handles 30a, 30b is provided with two support arms 34, 36 (in Figure 8 only the support arms of the handle 30a are provided with reference numbers), between which the web 32 extends. Accordingly, the two identical support arms 34, 36 are oriented so that their connecting pieces 56, 58 (see Figures 6 and 7 ) assign to each other. The support plates 46, 48 then engage again in a force-fitting and form-fitting manner in the respective webbing loops 80, 82 and 86, 88, respectively. Ie the webs of the handles 30a, 30b extend over the respective webbing loops 80, 82 and 86, 88, respectively, so that assembly is only possible when the air has been drained, with the handles 30a, 30b being practical in the inflatable state due to the force/positive connection cannot be solved.

The conventional holding loop 72 is in turn mounted between the handles 30a, 30b. In the exemplary embodiment according to Figure 8 (and also in the other exemplary embodiments) a handle 16 is detachably attached to the leading edge 7 of the front tube 6 in an extension of the center strut 18, the structure of which is based on the Figures 9 and 10 is explained.

Accordingly, this handle 16 in turn has two support arms 34, 36, which are essentially constructed in accordance with Figures 6 and 7 are trained. The support plates 46, 48 in turn dip into webbing loops 98, 100 of the adapters 76, 78, which are attached to the leading edge 7 of the front tube 6. As in the previously described exemplary embodiment, the two webbing loops 98, 100 lie between the support arms 34, 36, so that the handle 16 is reliably fixed in position.

In this exemplary embodiment, a web 32 made of an elastic material, for example a flexible hose, is placed on the two connecting pieces 56, 58, which is curved according to the curvature of the leading edge 7 (see Figure 10 ). In the illustrated embodiment, the hose is press-fitted onto the stepped end portion of the connectors 56, 58. Of course, the web 32 can also be additionally fixed in position via fixing elements, for example latches, screws, jamming or the like. This of course also applies to the other described handles 28, 30.

In the exemplary embodiments described above, the center strut 18 is designed to be inflatable. As explained at the beginning, instead of this inflatable center strut 18, a center strut designed as a tree or additionally designed with a tree can also be used. In this case there is no need to attach handles to the center strut. However, it is certainly advantageous to provide the above-described handles 16 and 28a, 28b in addition to the tree to simplify handling.

What is revealed is a foil wing in which removable handles are attached to a front tube or a center strut.

List of reference symbols:

1

Foil wing

2

Foil board

4

Sufer

6

Front tube

7

Leading Edge

8th

Tip

10

Tip

12

Trailing Edge

14

Canvas (Canopy)

16

handle

18

Centerstrut / tree

19

Safety leash

20

Vertex of the front tube/leading edge

22

Strut section

24

Middle section

26

End section

27

Distance

28

handle

30

handle

32

web

34

Support arm

36

Support arm

46

Support plate

48

Support plate

56

connector

58

connector

68

investment shoulder

70

recessed grip

72

holding loop

74

Center strut area

76

adapter

78

adapter

80

Webbing loop

82

Webbing loop

84

End section

85

cap

86

Webbing loop

88

Webbing loop

90

cap

92

Recording room

94

Recording room

96

Got over

98

Webbing loop

100

Webbing loop

Claims (12)

1. A foilwing for wind-powered sports, comprising an inflatable front tube (6) from which extends an inflatable center strut (18) adapted to be held by the user for guiding the foil wing (1), wherein the front tube (6) and the center strut (18) span a canopy (14), and at least one handle (16, 28, 30) attached to the center strut (18) for holding the foil wing (1),
   characterized in that
   the handle (16, 28, 30) is designed to be detachable and overstretches a portion of the front tube (6) or of the center strut (18), and end portions of the handle can be inserted into bracing adapters (76, 78) attached to the front tube (6) or to the center strut (18), wherein one end portion can be inserted into a receiving space (92, 94), which is limited by one of the bracing adapters on the one hand and by the front tube (6) or by the center strut (18) on the other hand, and can be braced with the adapter (76, 78) by inflating the front tube (6) and/or the center strut (18), such that the end portion is held in a force-fitting and/or form-fitting manner.
2. Foilwing according to claim 1, wherein the handle (16, 28, 30) is rigid or flexible.
3. Foilwing according to one of the claims 1 or 2, wherein the adapter (76, 78) is formed in a loop shape from a ribbon- or belt-like material which is connected to the center strut (18) or to the front tube (6).
4. Foilwing according to one of the preceding claims, wherein the handle (16, 28, 30) is made in one piece or in several pieces with a web (32), with which at least one support arm (34, 36) is associated.
5. Foilwing according to claim 4, wherein the support arm (34, 36) is designed with a support plate (46, 48) at an end portion away from the web (32).
6. Foilwing according to claim 5, wherein the support plate (46, 48) or the web (32) protrudes beyond the adapter (76, 78) with a protrusion (96).
7. Foilwing according to claim 5 or 6, wherein the support plate (46, 48) is curved according to the diameter (d, D) of the center strut (18) or of the front tube (6).
8. Foilwing according to one of the claims 4 to 7, wherein the handle (16, 28, 30) is braced on the one hand via a support arm (34, 36) and on the other hand via the web (32) with the respective adapter (76, 78).
9. Foilwing according to one of the preceding claims, wherein the web (32) is tubular or hose-shaped and the support arm (34, 36) with a connecting piece (56, 58) dips into the tubular profile of the web (32) or section-wisely engages around it .
10. Foilwing according to claim 9, wherein the web (32) is straight or curved.
11. Foilwing according to one of the preceding patent claims, wherein two handles (28a, 28b) are attached in an approximately V-shaped manner on the one hand to the center strut (18) and on the other hand to the front tube (6).
12. Foilwing according to one of the preceding claims, wherein at least one, preferably flexible, handle (16) is non-detachably attached to the front tube (6) and/or to the center strut (18).

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