EP2918317A1 - Snowboard, kit for practising sports comprising such a board and method for assembling such a kit - Google Patents

Abstract

This gliding board (2) comprises a sole (26), an upper layer (22) opposite the sole and at least one hole opening on the sole and on the upper layer. This hole is a slot (28) whose length (L28) is greater than 15 mm and whose width (/ 28) is between 3 and 8 mm, preferably between 3 and 5 mm.

Description

The present invention relates to a gliding board, such as a ski touring, intended to be equipped with a seal skin, and a set of sports practice including, among others, such a gliding board. The invention also relates to a method of mounting a seal skin on the gliding board of such an assembly.

A seal skin is a web of fabric that allows for greater grip of a ski or the like, during climbs, and limits the risk of unwanted reverse gear. In the field of ski touring, it is known to set a seal skin under the sole of a ski through a layer of adhesive. In addition, the front and rear ends of the skin must be held in relation to the front and rear ends of the ski to prevent them from beating or falling off.

In this context, it is known to EP-A-1,535,651 to use a closed stirrup engaged in a passer of the seal skin and which surrounds a front or rear end of a ski. It is also known to EP-A-1,875,946 using a hook of synthetic material to wedge a traction element against a rear edge of a ski. Otherwise, EP-A-1,977,798 teaches to use a plate to pinch a seal skin against a sole of a gliding board. This plate is equipped with threaded rods passing through orifices in the gliding board and which cooperate with nuts mounted on the top of the gliding board. DE-C-616,589 discloses the fixing of a seal skin on a ski by springs engaged in orifices formed through a ski, the springs being tensioned by a mechanism located on the top of the ski. Finally, EP-A-2,537,567 teaches to mount an insert in a hole made at the end of a gliding board. This insert is provided with a deformable opening in which can be inserted an organ located at the end of a seal skin.

When it comes to removing the skins, these different fastening systems can normally be implemented only by removing the skis. This heaving operation is usually carried out at a culminating point of an uphill path, which can be small and windy. This results in a risk of ski loss because ski touring is generally not equipped with ski brakes, and a loss of time at the top, a place where the user is exposed to the wind.

In addition, the known systems fix the seal skin over substantially the entire length of the ski. However, it is only on the central part of the ski that the seal skin is necessary and has maximum efficiency. Parts of the seal skin at the front end of the ski and under the heel are not useful for climbing. In addition, the rear portion increases the risk of detachment of the skin when planted skiing in the snow. In addition, a skin of small size is easier to handle.

It is these drawbacks that the invention more particularly intends to remedy by proposing a gliding board that does not need to be loosened to remove the seal skin.

For this purpose, the subject of the invention is a gliding board comprising a soleplate, an upper layer opposite to the soleplate and at least one hole opening on the soleplate and on the upper layer, characterized in that the hole is a slot of which the length is greater than 15 mm, preferably greater than 20 mm and whose width is between 3 and 8 mm, preferably between 3 and 5.

Preferably, the length of the slot is greater than 4 times, or even 5 times, the width thereof.

Thanks to the invention, it is possible to remove the seal skin by passing the flat gripping member through a slot of the gliding board, without having to remove. Furthermore, the invention makes it possible to use seal skin that is shorter than traditional seal skins, which limits the overweight due to seal skin, improves the quality of the gliding and reduces the cost of buying the seal. skin by the user.

• La fente est disposée selon l'axe longitudinal de la planche.
• La fente est disposée dans la zone de relevé spatule.
• La longueur de la fente est inférieure à 50 mm, de préférence comprise entre 20 et 45 mm.
• Une première fente se situe, le long d'un axe longitudinal de la planche, entre une zone de montage d'une fixation et une extrémité avant de la planche et au moins une deuxième fente se situe, le long de l'axe longitudinal, entre la zone de montage et une extrémité arrière de la planche.
• La planche de glisse comprend au moins deux fentes décalées selon un axe longitudinal de la planche et situées entre la zone de montage et une extrémité avant de la planche et/ou entre la zone de montage d'une fixation et une extrémité arrière de la planche.
• La planche de glisse comprend au moins deux fentes décalées selon un axe perpendiculaire à un axe longitudinal de la planche et parallèle à la semelle.
• La fente est située à l'avant d'une zone de montage d'une fixation et une extrémité de la fente du côté de la zone de montage se trouve à une distance supérieure à 50 mm d'une extrémité avant de la planche et/ou la fente est située à l'arrière de la zone de montage et une extrémité de la fente du côté de la zone de montage se trouve à une distance supérieure à 25 mm d'une extrémité arrière de la planche.

According to advantageous but non-compulsory aspects of the invention, such a gliding board may incorporate one or more of the following technical characteristics, taken in any technically permissible combination:

• The slot is arranged along the longitudinal axis of the board.
• The slot is located in the spatula survey area.
• The length of the slot is less than 50 mm, preferably between 20 and 45 mm.
• A first slot is located, along a longitudinal axis of the board, between a fixing mounting area and a front end of the board and at least a second slot is located along the longitudinal axis, between the mounting area and a rear end of the board.
• The gliding board comprises at least two slots offset along a longitudinal axis of the board and located between the mounting area and a front end of the board and / or between the mounting area of a binding and a rear end of the board. .
• The gliding board comprises at least two slots offset along an axis perpendicular to a longitudinal axis of the board and parallel to the sole.
• The slot is located at the front of a mounting area of a fixture and one end of the slot on the side of the mounting area is at a distance greater than 50 mm from a front end of the board and / or the slot is located at the rear of the mounting area and one end of the slot on the side of the mounting area is at a distance greater than 25 mm from a rear end of the board.

The invention also relates to a set of sports practice, in particular of ski touring or equivalent, this set comprising at least one gliding board as mentioned above and a seal skin comprising at least less a strip of non-slip material intended to be affixed against the sole of the gliding board, this strip comprising a first end portion and a second end portion. In this assembly, the seal skin comprises a flexible link fixed, at a first end, to at least one end portion of the band and which carries, at its second end, a flat gripping member, while the thickness of the 'gripping member is strictly less than the width of the slot, that the width of the gripping member, measured perpendicular to its thickness and perpendicular to a direction extending the flexible link, is at least 5 times greater than the width of the slit and that the width of the gripping member is strictly less than the length of the slot.

Advantageously, when the gliding board comprises two slots respectively located in front of and behind the mounting area of a binding, a flexible link is attached to each end portion of the seal skin.

Advantageously, at least one slot does not open at the front end or the rear end of the ski, so that the distance separating it from said end is non-zero. The thin character of the slot with a length at least greater than 4 times, preferably 5 times, its width, has the consequence that this slot has no effect on the sliding behavior of the ski, even in the case where the slot is not open and it is located at a certain non-zero distance from the front end, respectively of the rear end.

1. a) faire passer l'organe de préhension à travers la fente depuis un côté de la planche de glisse comprenant une semelle, vers un côté opposé de la planche de glisse, en alignant l'épaisseur de l'organe de préhension sur la largeur de la fente et
2. b) faire pivoter l'organe de préhension, avec une amplitude angulaire supérieure ou égale à 45°, de préférence égale à 90°, autour d'un axe prolongeant le lien flexible au-delà de sa deuxième extrémité, en tordant le lien flexible.

Finally, the invention relates to a method of mounting the seal skin on the gliding board of a set of sports practice as mentioned above. According to the invention, this method comprises at least steps of:

1. a) passing the gripper through the slot from one side of the gliding board comprising a sole, to an opposite side of the gliding board, aligning the thickness of the gripping member with the width of the board; the slot and
2. b) pivoting the gripping member, with an angular amplitude greater than or equal to 45 °, preferably equal to 90 °, about an axis extending the flexible link beyond its second end, by twisting the flexible link .

Advantageously, the method comprises at least one additional step c), after step b) and of folding the gripping member towards the side of the gliding board opposite the sole, by rotating it around an axis perpendicular to the width of the slot and parallel to the sole.

• la figure 1 est une vue partielle en perspective et par le dessus d'un ensemble de pratique sportive comprenant un ski de randonnée et une peau de phoque, conforme à l'invention ;
• la figure 2 est une vue à plus grande échelle du détail II à la figure 1 ;
• la figure 3 est une coupe partielle selon le plan III-III à la figure 1 ;
• la figure 4 est une coupe analogue à la figure 3 lors d'une première étape de mise en place de la peau de phoque sur le ski ;
• la figure 5 est une coupe analogue à la figure 3 lors d'une deuxième étape de mise en place de la peau de phoque sur le ski ;
• la figure 6 est une vue en perspective par le dessus d'une portion du ski correspondant aux figures 3 à 5, dans la configuration de la figure 5 ;
• la figure 7 est une coupe analogue à la figure 3 lors d'une troisième étape de mise en place ;
• la figure 8 est une vue analogue à la figure 6 dans la configuration de la figure 7 ;
• la figure 9 est une coupe analogue à la figure 3 lors d'une quatrième étape de mise en place ;
• la figure 10 est une vue analogue à la figure 6 dans la configuration de la figure 9 ;
• la figure 11 est une vue en perspective par le dessous du ski et de la peau de phoque avant montage ;
• la figure 12 est une vue en perspective analogue à la figure 11, une fois la peau de phoque montée sur le ski ;
• la figure 13 est une vue en perspective analogue à la figure 1 pour un ski de randonnée et des peaux de phoque conformes à un deuxième mode de réalisation de l'invention ;
• la figure 14 est une vue en perspective analogue à la figure 13 pour un ski de randonnée et des peaux de phoque conformes à un troisième mode de réalisation de l'invention et
• la figure 15 est une vue en perspective analogue à la figure 13 pour un ski de randonnée et des peaux de phoque conformes à un quatrième mode de réalisation de l'invention.

The invention will be better understood and other advantages thereof will appear more clearly in the light of the following description of an embodiment of a snowboard and a set of sports practice consistent with its principle, given purely by way of example and with reference to the appended drawings in which:

• the figure 1 is a partial view in perspective and from above of a set of sports practice comprising a ski touring and a seal skin, according to the invention;
• the figure 2 is a larger-scale view of detail II to the figure 1 ;
• the figure 3 is a partial section along the plane III-III at the figure 1 ;
• the figure 4 is a cut similar to the figure 3 during a first step of setting up the seal skin on the ski;
• the figure 5 is a cut similar to the figure 3 during a second step of setting up the seal skin on the ski;
• the figure 6 is a perspective view from above of a portion of the ski corresponding to Figures 3 to 5 , in the configuration of the figure 5 ;
• the figure 7 is a cut similar to the figure 3 during a third stage of implementation;
• the figure 8 is a view similar to the figure 6 in the configuration of the figure 7 ;
• the figure 9 is a cut similar to the figure 3 during a fourth stage of implementation;
• the figure 10 is a view similar to the figure 6 in the configuration of the figure 9 ;
• the figure 11 is a perspective view from below of the ski and seal skin before mounting;
• the figure 12 is a perspective view similar to the figure 11 once the seal skin is on the ski;
• the figure 13 is a perspective view similar to the figure 1 for a ski touring and seal skins according to a second embodiment of the invention;
• the figure 14 is a perspective view similar to the figure 13 for ski touring and seal skins in accordance with a third embodiment of the invention and
• the figure 15 is a perspective view similar to the figure 13 for a ski touring and seal skins according to a fourth embodiment of the invention.

The figure 1 partially represents a set E of ski touring practice. This set includes two hiking skis and two seal skins, of which only one ski 2 and one seal skin 3 are visible in the figures. The seal skin 3 is intended to be affixed to a lower face of the ski 2.

In the present description the concepts of "superior", "lower", "front" or "rear" are defined with reference to a position of use of the ski touring 2 resting on a flat surface S and horizontal. For the sake of clarity, the surface S is represented only on the figure 1 . Thus, an "upper" part is located above a "lower" part of the same part. The front part designates the part of the ski 2 being in front of a skier in ski use situation and the rear part the opposite part to the front part.

The ski has a multilayer structure and comprises an upper finish layer 22, a core 24 and a sole 26 whose outer surface 262 forms the underside of the ski. In practice, the ski 2 may comprise other layers, not shown, such as reinforcements.

The seal skin 3 comprises a band 4 of elongate shape, with a longitudinal axis X4 and a transverse axis Y4 perpendicular to the axis X4 and parallel to the strip 4. Z4 is denoted by a perpendicular axis and sequent with the axes X4 and Y4. Furthermore, X2 is the longitudinal axis of the ski and Y2 its transverse axis perpendicular to the axis X2. We denote by Z2 a perpendicular axis and sequent with the axes X2 and Y2. The axis Y2 is parallel to the sole 26, while the axis Z2 is perpendicular thereto.

The band 4 is made of non-slip synthetic material and 41 and 43 are respectively noted its front and rear end portions. The front end portion 41 extends 5 cm from the front end of the band and towards the rear end. Similarly, the rear end portion 43 extends 5 cm from the rear end of the strip and towards the front end.

L4 is the length of the strip 4 measured parallel to the axis X4.

The upper surface 46 of the strip 4 is adhesive, while its lower surface 48 has a texture intended to increase the friction on the snow.

Two cords 6 and 6 'respectively extend from the front end portions 41 and rear 43 and each carry a ring 8 or 8'. The cords 6 and 6 'are identical as well as the rings 8 and 8'. The following explanations on the cord 6 and the ring 8 are transposable to the cord 6 'and to the ring 8.

The cord 6 is made of synthetic material, metallic or natural and has a length L6 between 5 and 50 mm. It can be slightly elastic, which facilitates the establishment of the seal skin 3 on the ski. This is not required, however. The cord is able to twist along an axis which is longitudinal. This has the effect of significantly reducing the length and also allow the rotation of the ring according to the arrow F3.

The cord has a substantially circular cross section and negligible with respect to its length. This is why it is considered a one-dimensional link. In alternative embodiments, not shown, the cord does not have a circular section, but slightly flattened. In alternative versions, the cord is replaced by a strap of small width, so that it is possible to make him undergo a twist without difficulty. Whatever the configuration of the flexible link, it is preferable that its section is such that width and thickness remain in a ratio of 5 to 1, preferably 3 to 1.

The length L6 of the cord is relatively small because the slot is formed in the ski at a significant distance D2 from the front end and it is not necessary for the cord to bypass the front end.

The ring 8 is circular and centered on an axis A8. It is made of metal or synthetic material and has an outside diameter D8 of between 20 and 40 mm, preferably of about 25 mm and an inside diameter d8 slightly smaller than the outside diameter. The diameter D8 defines the width of the ring 8. It defines an orifice 82 whose diameter allows it to receive the end of a finger of a user, even gloved. Note e8 the thickness of the ring 8, measured parallel to the axis A8. This thickness is between 1 and 4 mm, preferably of the order of 3 mm. The ring 8 is plane, in that the thickness e8 is less than 20% of its width D8.

As is particularly apparent from the figure 7 , the ring 8 is formed by a rod with a rectangular section. Alternatively, this section may be polygonal, with a shape other than rectangular, or circular.

An orifice 42 is pierced, through the end portion 41, at a distance of about 5 mm from the front end of the strip 4. The first end of the cord 6 is noted, by which it is attached to the strip 4 , passing through the orifice 42. The second end of the cord 6 is noted 66 by which it is attached to the ring 8, passing through the orifice 82. In practice, the cord 6 is shaped in a loop before being successively engaged in the orifices 42 and 82 to form the ends 64 and 66. A6 is noted an axis extending the cord 6 beyond its end 66. The axes A6 and A8 are perpendicular.

In a variant not shown, the ring 8 is not circular and its width is defined as its maximum dimension perpendicular to its thickness e8 and the axis A6.

The cord 6 'is fixed to the band 4 and the ring 8' in the same way and A6 'is noted an axis which extends the side of the ring 8'.

In order to fix the seal skin 3 on the ski 2, slots 28 and 28 'are formed, parallel to the axis X2, through the ski. A first slot 28 is located at the front of the ski, between the front end 21 of the ski and a mounting zone 27 of a binding. A second slot 28 'is located at the rear of the ski between its rear end 21' and the mounting area 27. The slots 28 and 28 'have the same geometry and the following explanations on the slot 28 are transposable to the slot 28.

In the embodiment described, the slots are not open on the front end, respectively rear, of the ski. That is, they are not open forward or backward and are placed at a distance from the ends.

It is noted L28 the length of the slot 28 measured parallel to the axis X2 28 and its width measured parallel to the axis Y2.

The length L28 has a value of between 15 and 50 mm, preferably between 20 and 45 mm. The width l 28 has a value of between 2 and 7 mm, preferably between 3 and 5 mm. In practice, the length of the slot is greater than at least 4 times its width, preferably 5 times.

Thus, the diameter D8 of the ring 8 is at least 5 times greater than the width l 28, preferably 7 times that width.

L2 is the length of the ski 2 measured parallel to the axis X2 between its ends 21 and 21 '. Note 282 the end of the slot 28 farthest from the end 21, that is to say the closest to the mounting area 27. Similarly, we note 284 the end of the slot 28 ' the farthest from the end 21 ', that is to say the closest to the mounting area 27. At the same time, 282' is noted, the end of the slot 28 closest to the front end 21 and 284 ', the end of the slot 28' closest to the rear end 21 '.

D2 and D4 respectively denote measured distances parallel to the axis X2, on the one hand, between the ends 21 and 282, on the other hand between the ends 21 'and 284. Similarly, D2' and D2 'respectively are denoted by D4 'distances measured parallel to the axis X2, on the one hand, between the ends 21 and 282', on the other hand between the ends 21 'and 284'.

The distance D2 is preferably greater than 50 mm, preferably greater than 150 mm, and the distance D4 is greater than 25 mm, preferably greater than 50 mm. In the preferred embodiments, the front slot is entirely in the spatula survey zone, that is to say in the front portion of the ski that is not in contact with the ground when the ski is laid flat. on a flat surface.

The distance D2 'is non-zero insofar as the slot does not open on the front end 21. In practice, D2' is greater than 20 mm.

The distance D4 'is non-zero and preferably greater than 10 mm.

When the band 4 is mounted on the ski 2, its adhesive surface 46 comes into contact with the outer surface 262 of the sole 26.

$$\mathrm{D}\mathrm{8}<\mathrm{L}\mathrm{28}$$

In a first step of a method of mounting the seal skin 3 on the ski 2, which is shown in FIG. figure 4 , the adhesive surface 46 is pressed against the surface 262, as represented by the arrow F1. The ring 8 is then oriented parallel to the slot 28, with its axis A8 parallel to the slot 28, with its axis A8 parallel to the width l 28 of the slot. The user then pushes the ring 8 through the slot 28 by passing it from the side of the sole 26 towards the side of the upper layer 22, as represented by the arrow F2. This is possible because the following relationships are verified: $$\mathrm{e}8<l28$$

$$\mathrm{D}\mathrm{8}<\mathrm{The}\mathrm{28}$$

$$\mathrm{D}\mathrm{8}>>l\mathrm{28}$$

We then arrive at the configuration of figures 5 and 6 wherein the ring 8 which has passed through the slot 28 is subjected to a torque which rotates about the axis A6 about 90 °, as represented by the arrows F3. This is obtained by a twisting of the cord 6, authorized by its flexibility and its small width, which make it possible to reach the configuration of the figures 7 and 8 . Ring 8 is then in the position where it can no longer pass through the slot 28. It is blocked on the side of the upper layer 22, because the following relationships are verified: $$\mathrm{D}\mathrm{8}>2*l\mathrm{28}$$

$$\mathrm{D}\mathrm{8}>>l\mathrm{28}$$

In the configuration of figures 7 and 8 , the ring 8 is subjected, by the user, to a pair which makes it tilt about an axis Y282 parallel to the axis Y2 and close to the end 282, as represented by the arrow F4. ring 8 then reaches the configuration of the figures 9 and 10 .

In this configuration, given the square section of the ring constituting the ring 8, the support of the ring 8 on the layer 22 is stable. The ring 8 is not likely to switch unexpectedly in the opposite direction of the arrow F4.

The circular nature of the section of the cord, or more generally, the small width of the flexible link makes it easy to twist in order to move from the configuration 5 to the configuration 7.

In the embodiment shown, the cord consists of twisted wire strands. It is then possible to make several turns on itself by twisting which has the effect of significantly reduce the length. Thus it is possible to extend the flexible link and this even when the seal skin is already put in place on the ski.

The succession of steps represented on the Figures 4 to 10 is reproduced for the ring 8 'at the slot 28'.

When it is necessary to remove the seal skin 3 from the ski 2, it is sufficient to raise the ring 8 in the opposite direction to the arrow F4, to rotate it in the opposite direction to the arrow F3 and the to move to through the slot 28 in the opposite direction of the arrow F2. We proceed in the same way for the ring 8 ', at the slot 28'. For these operations, we do not necessarily have to remove the ski 2.

Given the value of the distances D2 and D4, the length L4 is strictly less than the length L2. In practice, the following relationship is verified: $$\mathrm{D}\mathrm{2}+\mathrm{D}\mathrm{4}+\mathrm{The}\mathrm{4}<\mathrm{The}\mathrm{2}$$

Thus, the seal skin 3 is substantially shorter than the ski 2, so that it is light and easy to handle, in comparison with a seal skin that extends over the entire length of the ski. This seal skin remains effective on the climb because it is located along the entire length of the mounting area 27.

The removal of the seal skin requires to reverse the steps described for its implementation. This phase is made particularly easy by the various features of the invention.

Firstly, the fact that the skin and the fastening device thereof at the rear do not extend to the heel of the ski authorizes to plant the ski in the snow before removing the skin.

On the other hand, no effort is required to tilt the ring in the raised position and then untwist the cord. These two operations are from the top of the ski. They can therefore be made, while the ski is still placed gliding surface against the snow. Just take off the ski slightly ground to be able to pass the ring by the slot and catch up under the ski and then take off the seal skin by exerting a strong traction on the ring. In practice, all these maneuvers can be done by keeping the skis on.

In the embodiments shown in Figures 12 to 15 elements similar to those of the first embodiment bear the same references. In what follows, only what distinguishes these embodiments from the first is described.

In the embodiment of the figure 13 , the ski is perforated with three slots 28a, 28b and 28c on its front part and three slots 28a ', 28b' and 28c 'on its rear part.

The slots 28a, 28b and 28c are distributed along the axis X2, going from the mounting area 27 to the end 21. Similarly, the slots 28a ', 28b' and 28c 'are distributed along the length X2 axis, going from the mounting area 27 to the end 21 '. Depending on the type of gliding sought, the weight of the user and / or its technical level, it is possible to use with the ski 2 one of the three skins 3a, 3b and 3c visible at the figure 13 and whose strips 4a, 4b and 4c respectively have lengths adapted to the axial spacing between the slots 28a and 28a ', 28b and 28b', 28c and 28c '. Depending on the pitch between the different slots, the seal skin 3b may be mounted between the slots 28c and 28a ', 28b and 28b', 28a and 28c ', at the discretion of the user.

The number of slots in the front and back of the ski can be different from three.

In the embodiment of the figure 14 two slots 28 are provided at the front of the ski, at the same level along the axis X2 and offset along the axis Y2. Two seal skins 3, whose bands 4 are narrower than half the width of the sole, can be mounted simultaneously on the ski 2.

In the embodiment of the figure 15 , the seal skin 3 comprises two strips 4 of small width and the cord 6 comprises three strands 61, 62 and 63 configured in Y to connect the two strips 4 to a single front ring 8 at their respective ends 64, 65 and 66. The cord 6 'is identical to the cord 6 and connects the two strips 4 to a single rear ring 8'. The two strips 4 can be fixed in parallel under the ski 2 by inserting the rings 8 and 8 'in a single front slot 28 and a single rear slot 28'.

In practice, whatever the embodiment, the orifices 42 and 44 of each band 4, 4a, 4b or 4c can be drilled by the user who makes his own seal skins from strip 4 roll.

The user can even repair a seal skin 3 while hiking by piercing a band 4 with the end of his stick.

Alternatively, the seal skin is fixed only on the front of the ski 2, in which case it comprises a single cord 6 and a single ring 8, while the ski comprises one or more slots 28 only at the front of the ski. mounting area 27.

Alternatively, only the front slot 28, respectively only the rear slot 28 ', is non-emergent. In such a case, the distance D4 ', respectively the distance D2', is zero.

The cord 6 or 6 'can be replaced by a cable, a strap or other flexible link.

The invention has been described above when it is implemented with a ski touring. It is also applicable with other boards of glide, in particular another type of ski, a surf.

The technical features of the embodiment and variants mentioned above can be combined with each other.

Claims (12)

Gliding board (2) comprising a sole (26), an upper layer (22) opposite to the sole and at least one hole opening on the sole and the upper layer, characterized in that the hole is a slot (28, 28 ', 28a, 28b, 28c, 28a', 28b ', 28c') whose length (L28) is greater than 4 times its width ( 1 28), preferably 5 times. Gliding board (2) according to claim 1, characterized in that the length (L28) of the slot (28, 28 ', 28a, 28b, 28c, 28a', 28b ', 28c') is greater than 15 mm and in that the width ( l 28) is between 3 and 8 mm, preferably between 3 and 5 mm. Gliding board (2) according to one of the preceding claims, characterized in that said slot has a length (L28) less than 50 mm, preferably between 20 and 45 mm. Gliding board (2) according to one of the preceding claims, characterized in that said slot is separated from the front end 21 and the rear end 21 of the ski by a non-zero distance. Gliding board (2) according to one of the preceding claims, characterized in that it comprises at least a first slot (28; 28a, 28b, 28c) located along a longitudinal axis (X2) of the board between an attachment mounting area (27) and a front end (21) of the board and at least one second slot (28 ', 28a', 28b ', 28c') located along the axis longitudinal, between the mounting area and a rear end (21 ') of the board. Gliding board (2) according to one of the preceding claims, characterized in that it comprises at least two slots (28a, 28b, 28c, 28a ', 28b', 28c ') offset along a longitudinal axis (X2) of the board and located between a zone (27) mounting a fastener and a front end (21) of the board and / or between the mounting area and a rear end (21 ') of the board. Gliding board (2) according to one of the preceding claims, characterized in that it comprises at least two slots (28, 28 ') offset along an axis (Y2) perpendicular to a longitudinal axis (X2) of the board and parallel to the sole (26). Gliding board (2) according to claim 5, characterized in that : the slot (28) is located at the front of an attachment mounting area (27) and that an end of the slot (282) at the mounting area side is at a distance (D2) greater than 50 mm from a front end (21) of the board and / or - the slot (28 ') is located at the rear of the mounting area and that one end (284) of the slot on the side of the mounting area is at a distance greater than 25mm from one end rear (21 ') of the board. Set (E) for sporting practice, of the touring ski type or the like, comprising at least one gliding board (2) and at least one seal skin (3, 3a, 3b, 3c) comprising at least one band (4) anti-slip material intended to be affixed against the sole (26) of the gliding board, this band comprising a first end portion (41) and a second end portion (43), characterized in that : the gliding board (2) is according to one of the preceding claims, - the seal skin comprises a flexible link (6, 6 ') fixed, by a first end (64), to at least one end portion (41, 43) of the band (4) and which carries, at its second end (66), a planar gripping member (8, 8 '), the thickness (e8) of the gripping member is strictly less than the width ( l 28) of the slot (28, 28 ', 28a, 28b, 28c, 28a', 28b ', 28c'), - the width (D8) of the gripping member (8, 8 '), measured perpendicular to its thickness and perpendicular to a direction (A6) extending the flexible link, is at least 5 times greater than the width ( l 28) of the slot, and - The width of the gripping member is strictly less than the length (L28) of the slot. Assembly according to Claim 9, characterized in that : the gliding board (2) is according to claim 3, and a flexible link (6, 6 ') is attached to each end portion of the seal skin (3, 3a, 3b, 3c). Method for mounting the seal skin (3, 3a, 3b, 3c) on the gliding board (2) of a sports training set (E) according to one of claims 9 and 10, characterized in that it comprises at least steps of: a) passing (F2) the gripping member (8, 8 ') through the slot (28, 28'; 28a, 28b, 28c, 28a ', 28b', 28c ') from one side of the board; slide (2) comprising a sole (26) towards an opposite side of the gliding board, aligning the thickness (e8) of the gripping member with the width ( l 28) of the slot and b) pivoting (F3) the gripping member, with an angular amplitude greater than or equal to 45 °, preferably equal to 90 °, about an axis (A6) extending the flexible link (6) beyond its second end (66), twisting the flexible link. Method according to claim 11, characterized in that it comprises at least one additional step, subsequent to step b) and consisting of: c) folding (F4) the gripping member (8, 8 ') towards the side of the gliding board (2) opposite the sole (26), by pivoting about a perpendicular axis (Y282) to the width ( l 28) of the slot (28, 28 ', 28a, 28b, 28c, 28a', 28b ', 28c') and parallel to the sole.

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