FR2660567A1 - ALPINE SKIING WITH A DETERMINED RATIO BETWEEN WIDTH AND LENGTH. - Google Patents

Abstract

Alpine ski comprising an upper face coating and a sliding face coating (3, 15) and additional reinforcing layers (27) arranged between these coatings. This ski has a binding zone for a coupling device (4), in particular a front jaw and a heel piece (6, 7) intended to hold a ski boot (5) on the alpine ski. The ski (1, 2) has a width (12) which is greater than 10 cm and between 5% and 20% of the length (13).

Description

The present invention relates to an alpine ski with a face coating

  upper and a sliding face covering and additional reinforcing layers arranged between these covering, and with a fixing zone for a coupling device, in particular a front jaw and a heel piece intended to maintain a shoe.

sure on the ski.

  Alpine skis are already known in various embodiments.

  tion Thus, alpine skis used for downhill skiing can be made with lengths adapted to the size and weight as well as to the level of the user, between 160 cm and 230 cm for adults. on the other hand, we use skis which, if they essentially correspond in their structure to

  skis used on piste, however have a shorter length.

  In the extreme, we still know alpine skis for snowfields, also

  used in pairs, which have a very short length, less

  more than 1 m In addition, we also know that we can use, instead of a pair of skis, one-piece means of movement, such as, for example, monoskis, snowboards. and the like On such a board, which usually has a width much greater than that of a ski of a pair of skis, the user is placed substantially transversely in the direction of

  market; on a monoski, it is placed with both feet on the monoski

  ski, using special load-bearing parts fitted with cantilever brackets.

  Skis are also known for ski jumping, which present

  try a length and a width clearly superior to that of an alpine ski The reason is that the surface of attack must be the most

  large possible, in order to obtain a large amplitude of jump in pro-

  providing maximum vertical thrust.

  All the aforementioned skis have more or less proven themselves for the intended uses; in the design of the size and the bulge, mainly of alpine skis intended for average users, we have constantly sought to find a medium solution, which

  allows both sufficient support on hard and frozen tracks

  cées, and sufficient flexibility on soft snow or deep snow.

  The object of the present invention is to provide an alpine ski for

  read in pairs which allows even average skiers to ski

  in soft snow and especially in deep snow.

  According to the invention, this object is achieved by the fact that the ski has a width which is greater than 10 cm and between 5%

  and 20% of the length The surprising advantage is that, by

  wearing determined between the length of the ski and its width, together with a maximum surface of the sliding face coating, an alpine ski can be provided which allows the user to use this ski in the usual direction of travel, either by looking parallel to the longitudinal median axis of the skis, but which simultaneously produces a vertical thrust such in soft snow or in deep snow that, even during sudden control movements, it cannot sink momentarily and therefore brake too strongly, or even block It thus becomes much easier to learn to act gently to prepare for a turn as well as at the end

  cornering, so learning can be surprisingly simpli-

  trusted, also for skiers who later wish to ski in deep snow with normal alpine skis To this is added the unforeseen advantage that, although using a pair of skis, one can obtain considerably less stress and degradation

  of the environment, mainly when traveling in deep snow

  because the user with the alpine skis configured in accordance with the invention no longer sinks as deeply under the surface of

  snow, so that seedlings of trees, shrubs or so-

  are protected from damage, due in particular to the edges

  Another advantage over normal alpine skiing

  side in that, due to the large vertical thrust surface and the large gliding surface, the ski can be maneuvered even without steel edges in the region of the lateral edges, which allows

  remove another significant risk factor for degradation

  dating of young cultures when traveling in deep snow.

  According to an advantageous additional characteristic, the long

  ski width is less than 200 cm, which also facilitates short turns, especially when passing very narrow and steep furrows. According to another characteristic, the surface of the sliding face coating can be between 1500 cm 2 and 5000 cm 2, and preferably equal to 2200 cm 2, which allows, surprisingly

  that even when using pairs of skis, the surface pressure

  it is reduced almost by half. This causes less compaction of the snow cover, and less stress on the soil or plants below it.

  surprisingly that a significant number of people can now

  nant to descend slopes of deep snow which will preserve more or less their characteristics, since the snow which is below the layer of powder is no longer too strongly packed, so that one can keep for a fairly long time a state of

approximately identical sliding.

  It is also advantageous that, in accordance with a characteristic

  additional tick, a binding axis extends obliquely at a given angle relative to a longitudinal central axis of the ski and that, preferably, the distance between an inner lateral edge of the ski and the binding axis increases as it approaches of the tip of the ski It is thus possible, even with increased widths of alpine skiing, to obtain a position corresponding to the natural placement of the feet, without the

legs are too far apart.

  According to a possible variant, the fixing axis is simply

  offset by a given lateral distance in a direction perpendicular to

  area at the longitudinal median axis of the ski, being in particular arranged

  between the longitudinal median axis and the inner lateral edge of the ski.

  This also makes it possible to obtain a placement width adapted to

the respective user.

  According to an additional characteristic, the upper face coating and the sliding face coating, as well as the additional reinforcing layers of the ski, extend right through.

  to the side faces of the ski This gives a flexible flexibility

  satisfactory and therefore a good adaptation to the various irregularities of

Track.

  But it is also advantageous that the side face of the ski

  is constituted by a lateral cheek, whose resistance is inferior

  higher than that of steel and, for example, less than 300 N / mm 2, because it is thus possible to exclude a bulging of the ski perpendicular to the longitudinal direction by too great rigidity in the edge regions, and reduce the degradation of plants or trees in the snow. The sliding properties can also be improved by the fact that a size of the ski is made symmetrical with respect to the binding axis, since it is thus possible to center the bending of the ski relative to the point of mounting of the binding, and to improve thus the behavior of the ski, or advantageously lengthen the length of the edges in

view of the ski guide when cornering.

  According to an advantageous alternative embodiment, a point of intersection of the lateral faces of the ski at the tip of the boot is located in the region of the binding axis. This thus improves the maneuverability of the ski, while providing a possibility

  orientation closer to that of a normal ski.

  It is also advantageous that the lateral faces, in particular the size, are made asymmetrical with respect to the median axis

  longitudinal or to the fixing axis, as this avoids stress

  asymmetrical tion of the lateral edges.

  According to another advantageous variant, the lateral faces of the ski

  are concave in the region of the coupling device, which

  Despite the large width of the ski, sufficient self-damping is obtained. The guide length in the region of the lateral edges of the ski can be improved without considerably increasing the control expense, if the lateral faces of the ski extend in a straight line between the front and rear terminal regions, made convex, and

  the concave central region of these lateral faces.

  Ski guidance will be improved if, in accordance with a new

  characteristic, the ski presents a bulge in the region of the dispo-

mating sitive.

  According to an additional characteristic, the sliding face is bent perpendicular to the longitudinal median axis and has a V-shaped section. Advantageously, this prevents even further depression of the ski from the outside and, in addition, the

  guide forces are rather directed towards the internal lateral edges

skiers laughing.

  According to an advantageous additional configuration, part

  of the sliding face, extending in the direction of the lateral face ex-

  of the ski, -is ascending at a given angle in the direction of the upper face of the ski, preferably in the region connecting to the coupling device It is thus possible, on soils

  harder or even on tracks, obtain a corresponding behavior

  approximating to that of a normal ski.

  According to a new characteristic, the lateral edges of the lateral faces or of the lateral cheeks are provided with a rounding, which makes it possible to prevent the ski even better from sinking, or even from breaking. Finally, according to a last additional characteristic, one and preferably several guide grooves, extending parallel to the longitudinal median axis, can be arranged in the sliding face coating. This makes it possible to improve the stability of the guide on the fresh snow of shallow depth, or on normal slopes but

covered in soft snow.

  The following description describes the invention in more detail using

  exemplary embodiments which are shown in the drawings an-

  attached, in which: FIG. 1 is a top view, in simplified schematic representation, of a pair of alpine skis according to the invention, with coupling devices (bindings) fixed in different positions on these skis; Figure 2 is a side view of the alpine ski of Figure 1, in section along line II-II of Figure 1; Figure 3 is a top view, in simplified schematic representation, of another embodiment of an alpine ski according to the invention, with an asymmetrical size and a fixing axis extending obliquely to the longitudinal median axis of this ski; Figure 4 is a front view of the alpine ski, in section along the line IV-IV of Figure 3; and

  FIG. 5 is a front view, in section and in a representation

  strongly simplified schematic feeling of another variant of

alpine skiing.

  Figures 1 and 2 show a pair of skis for alpine skiing, consisting of two skis 1 and 2 A respective coupling device 4, usually called "binding" and intended to fix a ski boot 5 on ski 1 or 2 , is arranged on an upper face covering 3 of the skis 1 and 2. Each of these coupling devices 4 consists of a front jaw 6 and a heel piece 7 The coupling devices 4 can be configured, arranged and fixed in any way, in accordance with all the variants known in the state

of technique.

  As shown in FIGS. 1 and 2, the coupling device 4 of the ski 1 can be arranged centrally with respect to

  a longitudinal median axis 8 In order to avoid additional figures

  another alternative arrangement of the coupling device

  4 is shown for ski 2 in FIG. 1 On this ski, the provision

  coupling coupling 4 is arranged along a fixing axis 9 which is disposed closer to an internal lateral edge 11 than the longitudinal central axis 8, at a lateral distance 10 from the axis 8 but in

  extending however parallel to the latter.

  This arrangement of the coupling device 4 is particularly suitable

  especially for the case where skis 1 and 2 are made with a wide

  geur close to the upper limit of possible width for these skis, because otherwise the user of such a pair of skis 1 and 2 should already take a position apart from his legs in normal movement in

straight line.

  Skis 1 and 2 according to the invention differ from skis known hitherto by the fact that their width 12 is between% and 20% of their length 13 Simultaneously, the width 12 is greater than 10 cm, and the sliding surface 14 of a sliding face coating 15 is between 1500 cm 2 and 5000 cm 2, and preferably

equal to 2200 cm 2.

  This configuration of skis 1 and 2 provides a large vertical thrust surface, which provides sufficient vertical thrust even on very soft, powdery and above all very dry snow, as it is predominant for example in America, Canada and USSR, so that a strong vertical thrust is obtained even during rapid movements, which prevents too deep sinking in the snow and thus facilitates the control of skis To this is added,

  surprisingly and could not have been foreseen, that this

  increased surface area of the sliding face also absorbs sudden alternations of stress and that there is no momentary increased depression of the ski requested in the snow, which prevents blocking or uncontrolled immobilization of this ski. This allows such skis to be used both for skiers with extensive experience in deep snow, to allow them

  to descend such slopes at increased speeds, and for descents

  runners, in order to teach them the control phases in deep snow

  melts without the frequent turns that are otherwise inevitable.

  For the use of such skis, it may also prove to be advantageous

  tageux they are endowed with a size 16, the side faces 23.24

  1,2 skis which can extend in a straight line over a long distance

  tudinal 22, between convex end portions 17,18 in the re-

  tip 19 and end 20 of the ski, and a medial part

  concave diane 21 This longitudinal distance 22 can be identical

  or different at the front and rear.

  The contour given to the size provides an additional possibility.

  silent adaptation of the behavior of skis 1 and 2 to the different cases

  It is thus possible to shorten the distances along

  22, or even predict smaller radii in the

concave middle part 21.

  Size 16 can in particular be centered on a mounting point, which is preferably located in the longitudinal middle of the ski 1

  or 2 This mounting point 25 also predominantly defines

  rante the attachment region 26 for the coupling devices 4.

  The coupling device 4 is usually mounted centrally

  in the direction of the longitudinal median axis 8, that is to say that the dis-

  Resistances between mounting point 25 and the front jaw 6

  on the one hand, and the heel piece 7 on the other hand, are identical.

  But it is also possible, by modifying these distances, to adapt to the personal aptitudes of the users, so as to

  example of increasing the vertical thrust effect by mounting the available

  coupling coupling closer to the back of the ski.

  Ski 1 or 2 can be designed in accordance with any construction principle known in the prior art for alpine skiing or ski jumping or the like. This ski can be made up of several reinforcing layers 27, for example in aluminum, plastic filled with glass fibers, metal, rubber or other similar materials, which are disposed between the sliding face coating 15 and the upper surface coating 3 Primed plastics are used for these layers 27 glass fibers, metallic fibers, graphitic fibers, ceramic fibers or the like It is of course also possible, on the model of the design of alpine skis used mainly on tracks, to have the corresponding central elements inside the skis 1 and 2 It is also possible, by disposing of the inserted parts, to take corresponding precautions to allow a fixatio n sufficiently stable of the coupling device 4 or else

  the front jaw 6 and the heel piece 7.

  By the configuration of these reinforcing layers and by a corresponding shape given during the compaction of the different

  layers, or by the choice of the thicknesses of these layers or

  reinforcements, it is also possible to produce a bulge 28 between the tip 19 and the end 20 of the ski, which produces a

  prestressing of the ski against the main direction of ground-

  You can thus obtain advantages similar to those already

obtained for known skis.

  FIG. 1 also shows, on ski 2, that the tip of ski 19 can be centered, either on the longitudinal median axis 8, or (as suggested in phantom) on the fixing axis 9 But it is of course also possible to give the tip 19 of the ski any other shape whatsoever, for example a semicircular rounding, an elliptical or parabolic configuration, or a shape starting in

  oblique to the longitudinal median axis 8.

  Figures 3 and 4 show another alternative embodiment.

  tion of a ski 1, in which the binding axis 9 extends obliquely to the longitudinal median axis 8 of the ski In addition, the axis of

  attachment 9 is laterally offset towards the inner side edge

  laughing 11 relative to the mounting point 25 By the value given to the offset of the fixing axis 9 relative to the mounting point 25, there is a possibility of adaptation to the step width of the respective user In order , with an oblique position of the fixing axis 9 relative to the longitudinal median axis 8, to obtain that the behavior of the ski is changed as little as possible, size 16 can be made asymmetric with respect to the axis longitudinal median 8 Preferably, the size is then related to the shape of the fixing axis 9, so that one obtains approximately identical behaviors in each direction when the ski is requested to pass curves The angle 29 between the longitudinal central axis 8 and the fixing axis 9 can be chosen beforehand by the manufacturer, or freely determined by the user Likewise for the distance 30 between the internal lateral edge 11 and the mounting point 31 on the axis of fixation 9 In this embodiment, the distance 30 therefore decreases the more the distance 32 of the tip of the ski 19 is reduced. In this case also, the front end portion 17 and the rear end portion 18 of the ski 1 are again made convex, and present size

a concave middle part 21.

  Also for this ski, the width 12 is equal to approximately 5% to% of the length 13 of the ski Likewise, the surface of the coating of

  sliding face 15 is between 1500 cm 2 and 5000 cm 2, and pre-

fence equal to 2200 cm 2.

  This corresponds for example to a ski with a length 13 of about cm and a width of about 13 cm It is of course also

  possible to make skis with a length of 180 cm and a width

  gor 20 cm But the ski can also have a length 13 of 160

  cm, and a width of up to 25 cm.

  The important thing is to provide a sufficiently large gliding surface, which allows a significant vertical thrust of the skis 1,2 in soft, powdery snow, and which also distributes sudden alternations of load over a large surface, so as to prevent rapid sinking of the ski Damping of alternations

  thus obtained load prevents uncontrolled movements.

  Figure 4 again shows that multiple layers of reinforcement

  forcing 27 can be arranged between the upper facing coating

  upper 3 and the sliding face coating 15 As suggested in point-

  one or more guide grooves 33 may be provided in

  the sliding face coating 15, or also in the reinforcement layer

  immediately consecutive.

  The upper face coating 3 or also the sliding face coating 15, as well as the reinforcing layers 27, can extend right through to the region of the side faces 23 But a possible alternative is shown in the region of the lateral face 24, namely that the lateral termination of the ski 1 can

  be effected by means of a side cheek 34, which may optionally

  also have a rounded 35 in the region of the lateral edge,

  especially in the region of the inner lateral edge 11 But the termin-

  its lateral of the ski can also be carried out by means of any combination

  its possible different variants.

  When using a side cheek 34, the latter is

  preferably made of a material which has a lower resistance

  lower than that of steel and in particular a resistance of less than 300 N / mm 2, such as for example aluminum. It is thus guaranteed that, even under very high stresses, the rounding 35 initially planned cannot be sharpened in a sharp edge, but will always remain dull. FIG. 5 represents another configuration of the ski 1, in

  which the sliding face has an inflection 36 in a di-

  rection perpendicular to the longitudinal median axis 8 A part 37 of the ski thus extends at an angle 38 relative to a part 39 of the ski 1, on which the coupling device 4 is preferably arranged. This has the advantage that , when descending on harder ground or on prepared slopes, the support face of ski 1 corresponds approximately to that of a normal ski, which therefore simplifies the control of ski 1 on hard tracks, without that the user has the impression that the bearing surface of his feet has pivoted towards the inner lateral edges 11 This would only be the case if, for example, the sliding face 14 was bent symmetrically with respect to the longitudinal median axis 8, as suggested by dotted lines in the part

39 of the sliding face 14.

  With this configuration, it is of course also possible to mount the coupling device 4 centrally with respect to the longitudinal median axis 8 Besides, the ski can also have a different thickness 40.41 in the region of the two lateral faces

  23.24 But the ski can also have the same thickness in the region

  gion of the two lateral faces 23,24 The advantage that the ski 1 has different thicknesses 40,41 is to allow a configuration of the coating of upper face 3 which is parallel to the laying face

  in the region of the coupling device 4.

  To conclude, it will also be mentioned that in order to simplify the

  description of the invention, the various elements of the skis or else

  bindings have been shown only as suggestions, and in part with sizes increased or reduced in a non-proportional manner. In addition, the various exemplary embodiments can be the subject individually, or only some of their parts such as, for example, the configuration of the size, the arrangement of the coupling device, the configuration of the tip of the ski and the shape of the sliding face 14 or the arrangement of

  inflection 36, variant embodiments.

Claims (15)

  1 Alpine ski with a top coating, a   sliding face clothing (3, 15) and additional reinforcing layers   additional (27) disposed between these coverings, and a fixing zone for a coupling device (4), in particular a front jaw (6) and a heel piece (7) intended to hold a ski boot on alpine ski, characterized in that the ski (1,2) has a width (12) which is greater than 10 cm and between 5% and 20% of the length (13).   2 Alpine ski according to claim 1, characterized in that the   length (13) is less than 200 cm.   3 Alpine ski according to claim 1 or 2, characterized in that the surface of the sliding face coating (15) is included   between 1500 cm 2 and 5000 cm 2, and preferably equal to 2200 cm 2.   4 Alpine skiing according to any one of claims 1 to 3,   characterized in that a fixing axis (9) extends obliquely at an angle (29) relative to a longitudinal median axis (8) of the ski (1,2) and, preferably, a distance (30) between an inner lateral edge (11) and the fixing axis (9) increases as it approaches the point (19) skiing.   Alpine skiing according to any one of claims 1 to 4,   characterized in that the fixing axis (9) is simply offset by a lateral distance (10) in a direction perpendicular to the longitudinal median axis (8) of the ski (1,2), being in particular arranged   between the longitudinal central axis (8) and the inner lateral edge (11).   6 Alpine skiing according to any one of claims 1 to 5,   characterized in that the upper face coating and the coating   sliding face (3.15), as well as the additional reinforcing layers (27) of the ski (1.2), extend right through   to the side faces (23,24) of the ski (1).   7 Alpine skiing according to any one of claims 1 to 6,   characterized in that the lateral face (24) of the ski (1,2) is constituted   killed by a side cheek (34), the resistance of which is less than   that of steel and, for example, less than 300 N / mm 2.   8 Alpine skiing according to any one of claims 1 to 7,   characterized in that a size (16) of the ski (1,2) is made symmetrically   sheet relative to the fixing axis (9).   9 Alpine skiing according to any one of claims 1 to 8,   characterized in that a point of intersection of the lateral faces (23,24) of the ski (1,2) at the tip of the boot is located in the region of the fixing pin (9).   10 Alpine skiing according to any one of claims 1 to 9,   characterized in that the side faces (23,24), in particular the size   (16), are made asymmetric with respect to the longitu-   dinal (8) or to the fixing pin (9).   11 Alpine skiing according to any one of claims 1 to 10,   characterized in that the lateral faces (23,24) of the ski (1,2) are   concaves in the region of the coupling device (4).   12 Alpine ski according to any one of claims 1 to 11,   characterized in that the side faces (23,24) of the ski (1,2)   extend in a straight line between the front and rear terminal regions   first (17,18), made convex, and the concave central region (21) side faces (23,24).   13 Alpine skiing according to any one of claims 1 to 12,   characterized in that the ski (1,2) has a bulge (28) in the   region of the coupling device (4).   14 Alpine skiing according to any one of claims 1 to 13,   characterized in that the sliding face (14) is bent perpendicularly   the longitudinal median axis (8), and has a V-shaped section   Alpine skiing according to any one of claims 1 to 14,   characterized in that a part of the sliding face (14), extending   towards the outer lateral face - (24) of the ski (1,2), is as-   ashing at an angle (28) towards the top facing coating   ski (1,2), preferably in the region connecting to the coupling device (4).   16 Alpine skiing according to any one of claims 1 to 15,   characterized in that the lateral edges of the lateral faces (23,24)   or side cheeks (34) are provided with a rounding.   17 Alpine skiing according to any one of claims 1 to 16,   characterized in that one and preferably several guide grooves (33), extending parallel to the longitudinal central axis (8), are   arranged in the sliding face coating (15).