EP0422382B1 - Device to oppose backward gliding for cross-country skiing - Google Patents

Device to oppose backward gliding for cross-country skiing Download PDF

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Publication number
EP0422382B1
EP0422382B1 EP90116861A EP90116861A EP0422382B1 EP 0422382 B1 EP0422382 B1 EP 0422382B1 EP 90116861 A EP90116861 A EP 90116861A EP 90116861 A EP90116861 A EP 90116861A EP 0422382 B1 EP0422382 B1 EP 0422382B1
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EP
European Patent Office
Prior art keywords
ski
housing
anchoring
bar
anchoring bar
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Expired - Lifetime
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EP90116861A
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German (de)
French (fr)
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EP0422382A1 (en
Inventor
Alain Bejean
Jacques Milloz
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Salomon SAS
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Salomon SAS
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C7/00—Devices preventing skis from slipping back; Ski-stoppers or ski-brakes
    • A63C7/06—Tooth-shaped running sole-plates

Definitions

  • the present invention relates to a cross-country ski provided with an anti-rollback device.
  • a wax can be used with which the ski sole is coated and which ensures the attachment of this sole on the snow, when a backward push is exerted on the ski, while reducing friction to a minimum. due to the ski sliding forward.
  • Wax is generally the most commonly used anti-rollback method, but it has the disadvantage that its use is delicate and inconvenient: indeed, the waxing operation, which must be carried out before each departure for skiing, takes a certain amount of time, it is difficult to achieve because the wax must be distributed judiciously and moreover the wax must be changed when the quality of the snow varies.
  • Cross-country skis of the type known as "scales” are known to date, the soles of which are shaped so as to present, at least in the area of the ski skid, that is to say where the pressure of the foot is exerted. of the skier, a succession of scales distributed, like “fish scales", over at least part of the width and length of the ski and which are slightly projecting from the plane of the sole.
  • the scales are arranged in inclined planes from top to bottom and from front to back so as to constitute, at their rear ends, these gripping faces substantially perpendicular to the sole of the ski. Scale skis thus ensure good anchoring of the ski in the snow, during the forward impulse, but they have a major drawback, namely that the protruding scales under the sole considerably increase the friction of this sole on the snow when sliding forward.
  • Document US-A-4,398,746 describes an anti-rollback device provided with several anchoring members which are deformed by the horizontal displacement of an adjustment element from a retracted position to a projecting position relative to the plane of the sole.
  • the movement of the adjustment element is manually controlled by a handle disposed on the top of the ski.
  • the document AT 388302 relates to an anti-kickback device comprising a multitude of ordered scales on a layer of elastomeric material.
  • the present invention aims to remedy these drawbacks by providing an anti-rollback device of particularly simple design and making it possible to avoid any penetration of snow into the housing containing the anchoring member.
  • this anti-rollback device for cross-country skiing of the type with movable anchor member mounted in a housing formed in the ski and opening into the lower sole thereof, this anchor member being able to occupy, when the ski is subjected to a backward push, a first anchoring position in the snow, in which its lower part projects downwards under the sole of the ski, to be immobilized in the snow or, when the ski slides forward , a second retracted position in which the lower part of the anchoring member is erased in its housing, is characterized inter alia in that the anchoring member has at least one upper face forming a ramp inclined from bottom to top and from front to back, means are provided for keeping the or each upper face forming an inclined ramp of the anchoring member in contact with at least one actuating element provided at the upper part of the housing and for vant sliding longitudinally on the or each upper face forming an inclined ramp, and a longitudinal clearance is provided between the housing and the anchoring member, to allow a slight relative longitudinal movement of the ski and its housing relative to the
  • the cross-country ski according to the invention is defined by the technical characteristics mentioned in claim 1.
  • FIGS. 1, 1A and 1B is schematically illustrated the principle implemented in the anti-rollback device for cross-country skiing according to the invention.
  • a cross-country ski 1 which slides on a layer of snow 2, by its sole 3.
  • ski 1 connected to a shoe of the skier, slides from left to right, in the direction of arrow a, as shown in Figure 1, during half of the "alternate step” then it is immobilized on the snow, as shown in Figures 1A and 1B , it serves as a fixed fulcrum, during the other half of the "alternative step", to allow the skier to launch his other ski forward.
  • a housing is formed longitudinal 4 which opens into the plane of the sole 3 and which contains the anti-rollback device proper 5.
  • This device 5 comprises an anchoring member 6 which, seen in vertical and longitudinal section, has the general shape of a rectangular trapezoid whose the small base is contained in the front end face 6a of the anchoring member 6 and the large base is contained in its rear end face 6b.
  • the front front face 6a is normally located at a distance from the front front face 4a of the housing 4 so that a slight longitudinal clearance is provided in the housing 4, in front of the anchoring member 6.
  • the rear front face 6b of the anchoring member is, it located against the rear end face 4b of the housing 4 or a short distance from the latter. Therefore the housing 4 has a length slightly greater than that of the anchor member 6. Furthermore the anchor member 6 has a horizontal lower face 6c which is shaped so as to have the best possible adhesion to the surface of the snow layer. This lower horizontal face 6c can be, for example, coated with a piece of seal skin or it can have roughness or suitable roughness.
  • the anchoring member 6 also has an upper face 6d which forms a ramp inclined from bottom to top and from front to back, that is to say from right to left in FIGS. 1,1A and 1B .
  • This inclined upper ramp 6d cooperates with an actuating element which, in the example shown, is constituted by the inclined upper face 4d delimiting the housing 4 at its upper part and had the same inclination as the ramp 6d.
  • Means are provided for keeping the anchoring member 6 applied, by its inclined upper ramp 6d, against the upper face 4d of the housing 4.
  • the skier stops his ski 1 and he begins to press on him to allow him to project his other ski in turn forward. It first exerts a vertical downward pressure on the ski 1, as it is represented by the arrow p in FIG. 1A. This has the effect of driving the ski 1 lightly into the snow so that the lower face 6c of the anchoring member 6 comes into contact, under low pressure, with the surface of the snow layer 2 to which it then adheres slightly by friction. The skier then gradually transforms his vertical pressure p into a push P downwards and backwards, as illustrated by the arrow in FIG. 1B.
  • This push P gives rise, at the point of contact of the inclined faces 6d of the anchoring member 6 and 4d of the housing 4, to the creation of a horizontal thrust component f directed towards the rear and to a force component f1 directed vertically downwards. Due to the play existing between the front front faces 4a of the housing 4 and 6a of the anchoring member 6, the ski 1 and therefore the housing 4 can move slightly rearward relative to the body anchor 6 kept fixed due to the slight friction of its lower face 6c on snow.
  • the inclined upper face 4d of the housing 4 therefore moves slightly backwards relative to the upper inclined ramp 6d of the anchoring member 6 with which it is in contact and this causes a downward movement of the member anchor 6, so that the adherent underside 6c of the anchor member 6 is pressed, under the action of the high pressure due to the vertical force component f1, against the surface of the snow layer 2 Due to its adhesion properties, this lower face 6c immobilizes firmly in the snow 2 and the anchoring member 6 then constitutes a stop engaged and immobilized in the snow.
  • the anterior front face 4a of the housing 4 comes to rest against the anterior front face 6a of the anchoring member 6, which is then immobilized firmly, and thus this anchoring member 6 is opposed to any additional movement of the ski 1 towards the rear.
  • the skier can thus rest on his ski blocked towards the rear, which allows him to restart his other ski forwards.
  • the anchoring member 6 is then released, at its upper part, as a result of the displacement of the inclined upper face 4d of the housing 4 forwards, if although the anchoring member 6 can be raised inside the housing 4, by the return means, to come to occupy its retracted position shown in FIG. 1 in which its lower face 6c is set back relative to the plane of the sole 3 of the ski 1.
  • the anti-rollback device comprises an anchoring member 7 which is constituted by a bar elongated in the longitudinal direction, of generally parallelepipedal shape and the lower horizontal face of which is in contact with a flexible and elastic membrane 8 which has , on its underside, adhesion properties vis-à-vis snow and which may be constituted, for example, by a seal skin.
  • This flexible membrane 8 extends under the entire length of the bar 7 and it is anchored, by its two end parts 8a and 8b, in the housing 4.
  • This anchoring is ensured by wedging the end parts 8a and 8b of the membrane 8 between the rear 4b and anterior 4a front faces of the housing 4, of an art, and two blocks 9 and 11 fixed respectively in the two upper corners of the housing 4, on the other hand.
  • the rear corner block 9 is placed against the rear front face 4b of the housing 4, in the upper and rear corner of this housing, and at this point it includes a lower transverse rib 9a which ends in an inclined lower face 9b from bottom to top and back and forth.
  • This inclined lower face 9b is situated a little above the plane of the sole of the ski 3 and it is opposite a hollow 12 formed in the central part of the sole 3 of the ski and the upper face of which extends between the sole 3 and the rear front face 4b of the housing, thus being inclined from bottom to top and from back to front.
  • the end part 8a of the membrane 8 which is pinched, at its upper part, between the rear front face 4b of the housing 4 and the corner block posterior 9, extends vertically downwards, for a short distance below the inclined lower face 9b, and it bends forward to form the horizontal section of the membrane applied under the anchor bar 7.
  • the rear corner block 9 also has, in its front part, a face 9c projecting downwards, which is inclined from bottom to top and from front to back and which constitutes a ramp cooperating with an upper face 7a, having the same inclination, of the longitudinal bar 7.
  • This inclined upper face 7a constitutes the lower part of a recess provided in the upper part of the longitudinal bar 7 and in which is engaged the front end part of the rear corner block 9 .
  • the longitudinal anchor bar 7 also has, in its upper face, substantially in its middle part, another hollow delimited by an inclined face 7b forming a ramp.
  • an intermediate block 13 which is fixed to the upper horizontal face 4d of the housing 4 and which ends in an inclined lower face 13a.
  • the inclined faces 7b and 13a which are in contact with each other, have the same inclination as the inclined faces 7a and 9c.
  • the front corner block 11 is produced substantially in the same way as the rear corner block 9 and it comprises a lower and front rib 11a which is applied against the front front face 4a of the housing 4, with pinching between them of the anterior extreme part 8b of the membrane 8.
  • the anterior corner block 11 also has, in its posterior part, an inclined face 11c projecting downwards which is engaged in a corresponding hollow formed in the anterior part of the upper face of the anchor bar 7, this hollow being delimited by an inclined face 7c.
  • the inclined faces 7c and 11c have the same inclination as the other inclined faces cooperating with each other, namely the faces 7a and 9c and the faces 7b and 13a.
  • the anti-rollback device also comprises members limiting the admissible vertical downward stroke of the anchor bar 7.
  • These members 14 are constituted by vertical rods passing through holes drilled in the anchor bar 7, fixed, at their upper ends, to the upper face 4d of the housing 4 and whose lower ends are integral with the heads 15 arranged in housings 16 provided in the lower horizontal face of the anchor bar 7.
  • the housings 16 have a height greater than the thickness of the heads 15 so that the anchor bar 7 can move towards the bottom until the upper bottoms of the housings 16 come into contact with the heads 15 fixed to the lower ends of the rods 14.
  • the rear corner block 9, the intermediate block 13 and the front corner block 11 can be constituted by individual blocks fixed by any suitable means to the upper horizontal face 4d of the housing 4. According to a variant, they can be connected to the to each other by constituting a common control bar fixed as a whole to the upper horizontal face 4d of the housing 4. In the latter case, the members 14 limiting the vertical stroke of the anchor bar 7 can advantageously be fixed to this bar. superior common control.
  • the anti-rollback device becomes active as shown in FIGS. 3 and 7.
  • the inclined lower faces 9c, 13a, 11c of the blocks 9,13 and 11 then slide backwards on the respective inclined ramps 7a, 7b, 7c of the anchor bar 7, which causes displacement of the assembly of this anchor bar 7, parallel to it- even, down.
  • This movement is limited by the vertical stop members 14.
  • the anchor bar 7 and the seal skin membrane 8 protrude slightly below the plane of the sole 3 of the ski 1, as it is shown in Figures 3 and 7, which ensures the attachment and immobilization of the ski on snow. It should be noted that in this position the posterior end portion 8a of the membrane 8 is stretched and is applied against the underside 9b of the posterior and bottom rib 9a of the posterior corner block 9.
  • the elastic membrane 8 acts as a return spring to bring the anchoring bar 7 retracted into the housing 4, when the backward push P is no longer exerted on the ski 1.
  • the anti-rollback device comprises a parallelepipedic housing 17 which is tightly fitted and fixed in the housing 4 and which is open at its lower part.
  • the housing 17 is fixed inside the housing 4 by any suitable means, for example by gluing or screwing.
  • the upper horizontal wall 17a housing 17 has two studs 18 and 19 distant from each other in the longitudinal direction projecting downward and which have, seen in vertical and longitudinal section, the shape of identical right triangles.
  • the inclined lower faces 18a, 19a of the studs 18,19 which constitute the hypotheses of the right triangles, are inclined at the same angle from bottom to top and from front to back and they cause the vertical movement of a bar longitudinal anchor 21 of parallelepiped shape, tightly housed in the housing 17.
  • This anchor bar 21 has a lower face adapted to obtain good grip on snow, for example by railing, fixing of a seal skin etc. It also has, in its upper surface 21a, two recesses each having, seen in vertical and longitudinal section, the shape of a right triangle and in which the two studs 18,19 are respectively engaged. These recesses are delimited by faces 21b, 21c inclined from bottom to top and from front to back and which are connected to the upper face 21a of the bar 21. The inclined faces 18a and 21b are in contact with one another. other, the inclined faces 19a and 21c are in contact with one another and they all have the same inclination.
  • guide means are provided at the two longitudinal ends of the housing 17 and of the anchor bar 21, to allow the vertical movement of the anchor bar 21 downward while guaranteeing a seal towards the interior of the housing. 17.
  • the anchor bar 21 is extended by a transverse lip 22 which is inclined from bottom to top and from front to back.
  • This lip 22 is engaged in a slot 23 which is formed in the rear transverse wall 17b of the housing 17 and which has the same inclination as the lip 22, as well as the faces 18a, 21b, 19a, 21c.
  • the anchor bar 21 In its anterior end portion, the anchor bar 21 has a front face 21d which is inclined from the bottom up and from front to back, with the same inclination angle as the rear lip 22, the slot 23 and the inclined faces. in contact 18a, 21b, 19a, 21c.
  • This inclined front end face 21d of the anchor bar 21 is in contact with a face 17c, of the same inclination, provided in the front part of the housing 17.
  • the anchor bar 21 has, in its front end part, two opposite lateral ribs 24 which project from the vertical and lateral faces of the anchor bar 21 and which are inclined at the same angle as the faces 21d and 17c. These inclined ribs 24 are engaged in inclined grooves 25 of the same slope which are provided in the anterior parts of the internal faces of the two vertical and lateral walls of the housing 17.
  • the anchor bar 21 is retained in the housing 17 and guided relative to the latter on the one hand at its rear end, as a result of the engagement of the rear lip inclined 22 in the inclined slot 23 of the housing 17, and on the other hand at its anterior end, as a result of its inclined lateral ribs 24 engaged in the inclined grooves 25 of the housing 17.
  • These guide members provide sealing at the two longitudinal ends of the anti-rollback device and this sealing is also ensured along the lateral faces of the anchor bar 21 and of the housing 17, as a result of the 'narrow fitting of the bar 21 in this housing.
  • the anchor bar 21 is freely mounted in the housing 17 and that it is applied under pressure against the snow surface only when a backward thrust is exerted on the ski 1, this thrust being transformed, as in the case of the embodiments previously described, into downward pressure, as a result of the cooperation of the inclined surfaces 18a, 21b, and 19a, 21c.
  • Figs. 11a and 11b show an advantageous solution for solving this problem: under the anchoring member 6 a removable plate 63 supporting the anti-recoil system 64 can be quickly put in place and removed.
  • the underside of the anchoring member 6 has a recess 61 which serves as a housing for a housing 62 fixed in the recess 61 by any means such as screwing, gluing, welding, etc.
  • the removable plate 63 comes to be embedded in the housing 62 and holds in place by friction or snap-fastening. On this removable plate is fixed the anti-recoil system 64 which one wishes to use under the ski.
  • skier has several removable plates 63, with on each of them one or more anti-recoil systems to be able to choose at the last moment the system best suited to the circumstances. It is also possible that a removable plate 63 does not have an anti-recoil system on all or part of its surface.
  • FIG. 12a, 12b, 12c Another embodiment of the housing 62 and the removable plate 63 is shown in FIG. 12a, 12b, 12c.
  • the housing 62 has two grooves 65, the removable plate 63 sliding in these grooves 65.
  • the groove 65 is removed in one end 66 in order to be able to deform in bending the removable plate 63 as shown in dotted lines 67 so that the removable plate 63 can pass over the rim 68 of the housing 62 both during installation and when extracting the removable plate 63.
  • a notch 69, provided in the removable plate 63 (or in the rim 68) facilitates the maneuver to extract this plate.

Description

La présente invention concerne un ski de fond muni d'un dispositif antirecul.The present invention relates to a cross-country ski provided with an anti-rollback device.

Lors de la progression d'un skieur de fond en trace directe, le skieur prend appui alternativement sur chacun de ses skis et il donne une impulsion vers l'avant, en prenant appui sur l'un des skis, afin de faire glisser vers l'avant l'autre ski. Lors de cette pratique du pas alternatif, il est nécessaire que le ski sur lequel le skieur prend appui ne puisse pas reculer pour que l'impulsion vers l'avant ait son intensité maximale.During the progression of a cross-country skier in direct trace, the skier alternately leans on each of his skis and he gives a forward impulse, by leaning on one of the skis, in order to slide towards the before the other ski. During this practice of the alternative step, it is necessary that the ski on which the skier is supported cannot be moved back so that the forward impulse has its maximum intensity.

On connaît déjà divers dispositifs empêchant le recul d'un ski de fond, tout en autorisant son mouvement de glissement vers l'avant avec le minimum de frottement. On peut utiliser à cet effet un fart dont on enduit la semelle du ski et qui assure l'accrochage de cette semelle sur la neige, lorsqu'une poussée vers l'arrière s'exerce sur le ski, tout en réduisant au minimum le frottement dû au glissement du ski vers l'avant. Le fart est généralement le moyen antirecul le plus couramment utilisé mais il présente l'inconvénient que son emploi est délicat et peu commode : en effet l'opération de fartage, qui doit être effectuée avant chaque départ pour le ski, prend un certain temps, elle est délicate à réaliser car le fart doit être réparti judicieusement et par ailleurs le fart doit être changé lorsque la qualité de la neige varie. C'est pour cette raison que l'on a conçu d'autres dispositifs antirecul à organes d'ancrage mécaniques. On connaît à ce jour des skis de fond du type dit à "écailles" dont les semelles sont conformées de manière à présenter, au moins dans la zone du patin du ski c'est-à-dire où s'exerce la pression du pied du skieur, une succession d'écailles réparties, comme des "écailles de poisson", sur au moins une partie de la largeur et la longueur du ski et qui sont légèrement en saillie par rapport au plan de la semelle. Les écailles sont disposées dans des plans inclinés de haut en bas et d'avant en arrière de manière à constituer, à leurs extrémités postérieures, ces faces d'accrochage sensiblement perpendiculaires à la semelle du ski. Les skis à écailles assurent ainsi un bon ancrage du ski dans la neige, lors de l'impulsion vers l'avant, mais ils présentent un inconvénient majeur à savoir que les écailles en saillie sous la semelle augmentent considérablement le frottement de cette semelle sur la neige lors du glissement vers l'avant.Various devices are already known to prevent the backward movement of a cross-country ski, while allowing its forward sliding movement with the minimum of friction. For this purpose, a wax can be used with which the ski sole is coated and which ensures the attachment of this sole on the snow, when a backward push is exerted on the ski, while reducing friction to a minimum. due to the ski sliding forward. Wax is generally the most commonly used anti-rollback method, but it has the disadvantage that its use is delicate and inconvenient: indeed, the waxing operation, which must be carried out before each departure for skiing, takes a certain amount of time, it is difficult to achieve because the wax must be distributed judiciously and moreover the wax must be changed when the quality of the snow varies. It is for this reason that other anti-reverse devices have been designed with mechanical anchoring members. Cross-country skis of the type known as "scales" are known to date, the soles of which are shaped so as to present, at least in the area of the ski skid, that is to say where the pressure of the foot is exerted. of the skier, a succession of scales distributed, like "fish scales", over at least part of the width and length of the ski and which are slightly projecting from the plane of the sole. The scales are arranged in inclined planes from top to bottom and from front to back so as to constitute, at their rear ends, these gripping faces substantially perpendicular to the sole of the ski. Scale skis thus ensure good anchoring of the ski in the snow, during the forward impulse, but they have a major drawback, namely that the protruding scales under the sole considerably increase the friction of this sole on the snow when sliding forward.

Pour remédier à cet inconvénient on a également envisagé d'équiper un ski de fond avec des organes d'ancrage ou "écailles" montés mobiles dans un logement formé dans le ski et débouchant dans la semelle de celui-ci. Toutes ces "écailles" sont articulées autour d'axes transversaux individuels et elles sont accouplées les unes aux autres, en étant réparties à distance les unes des autres dans le sens longitudinal. Ces écailles mobiles peuvent occuper une première position d'ancrage dans la neige dans laquelle toutes les écailles font saillie vers le bas sous la semelle du ski, et une seconde position escamotée dans laquelle toutes les écailles sont effacées dans leur logement. Dans ce dispositif, du fait que les écailles sont situées à distance les unes des autres, il existe entre elles des interstices entre lesquels la neige peut s'engager. Cette neige peut alors empêcher le fonctionnement du dispositif antirecul en empêchant les écailles de pivoter librement. Par ailleurs un tel dispositif a une structure relativement complexe et onéreuse, du fait que chaque écaille est montée à pivotement autour d'un axe transversal individuel.To remedy this drawback, it has also been envisaged to equip a cross-country ski with anchoring members or "scales" mounted mobile in a housing formed in the ski and opening into the sole thereof. All these "scales" are articulated around individual transverse axes and they are coupled to each other, being distributed at a distance from each other in the longitudinal direction. These mobile scales can occupy a first anchoring position in the snow in which all the scales protrude downward under the sole of the ski, and a second retracted position in which all the scales are erased in their housing. In this device, because the scales are located at a distance from each other, there are gaps between them between which the snow can engage. This snow can then prevent the anti-kickback device from working by preventing the scales from pivoting freely. Furthermore a such a device has a relatively complex and expensive structure, because each scale is pivotally mounted around an individual transverse axis.

Le document US-A-4,398,746 décrit un dispositif antirecul doté de plusieurs organes d'ancrage qui sont déformés par le déplacement horizontal d'un élément d'ajustement d'une position rétractée vers une position en saillie par rapport au plan de la semelle. Le déplacement de l'élément d'ajustement est commandé manuellement par une poignée disposée sur le dessus du ski.Document US-A-4,398,746 describes an anti-rollback device provided with several anchoring members which are deformed by the horizontal displacement of an adjustment element from a retracted position to a projecting position relative to the plane of the sole. The movement of the adjustment element is manually controlled by a handle disposed on the top of the ski.

Le document AT 388302 concerne un dispositif antirecul comprenant une multitude d'écailles ordonnées sur une couche en matériau élastomère.The document AT 388302 relates to an anti-kickback device comprising a multitude of ordered scales on a layer of elastomeric material.

La présente invention vise à remédier à ces inconvénients en procurant un dispositif antirecul de conception particulièrement simple et permettant d'éviter toute pénétration de la neige dans le logement contenant l'organe d'ancrage.The present invention aims to remedy these drawbacks by providing an anti-rollback device of particularly simple design and making it possible to avoid any penetration of snow into the housing containing the anchoring member.

A cet effet ce dispositif antirecul pour ski de fond du type à organe d'ancrage mobile monté dans un logement formé dans le ski et débouchant dans la semelle inférieure de celui-ci, cet organe d'ancrage pouvant occuper, lorsque le ski est soumis à une poussée vers l'arrière, une première position d'ancrage dans la neige, dans laquelle sa partie inférieure fait saillie vers le bas sous la semelle du ski, pour être immobilisée dans la neige ou, lorsque le ski glisse vers l'avant, une seconde position escamotée dans laquelle la partie inférieure de l'organe d'ancrage est effacée dans son logement, est caractérise entre autre en ce que l'organe d'ancrage présente au moins une face supérieure formant une rampe inclinée de bas en haut et d'avant en arrière, des moyens sont prévus pour maintenir la ou chaque face supérieure formant rampe inclinée de l'organe d'ancrage en contact avec au moins un élément d'actionnement prévu à la partie supérieure du logement et pouvant glisser longitudinalement sur la ou chaque face supérieure formant rampe inclinée, et un jeu longitudinal est ménagé entre le logement et l'organe d'ancrage, pour permettre un léger déplacement longitudinal relatif du ski et de son logement par rapport à l'organe d'ancrage.To this end, this anti-rollback device for cross-country skiing of the type with movable anchor member mounted in a housing formed in the ski and opening into the lower sole thereof, this anchor member being able to occupy, when the ski is subjected to a backward push, a first anchoring position in the snow, in which its lower part projects downwards under the sole of the ski, to be immobilized in the snow or, when the ski slides forward , a second retracted position in which the lower part of the anchoring member is erased in its housing, is characterized inter alia in that the anchoring member has at least one upper face forming a ramp inclined from bottom to top and from front to back, means are provided for keeping the or each upper face forming an inclined ramp of the anchoring member in contact with at least one actuating element provided at the upper part of the housing and for vant sliding longitudinally on the or each upper face forming an inclined ramp, and a longitudinal clearance is provided between the housing and the anchoring member, to allow a slight relative longitudinal movement of the ski and its housing relative to the body d anchor.

Le ski de fond selon l'invention est défini par les caractéristiques techniques mentionnées dans la revendication 1.The cross-country ski according to the invention is defined by the technical characteristics mentioned in claim 1.

On décrira ci-après, à titre d'exemples non limitatifs, diverses formes d'exécution de la présente invention,en référence au dessin annexé sur lequel :

  • Les figures 1,1A et 1B sont des vues en coude verticale et longitudinale partielles schématiques d'un ski de fond équipé d'un dispositif antirecul suivant l'invention, l'organe d'ancrage de ce dispositif étant représenté respectivement en position escamotée dans le logement pendant le glissement du ski vers l'avant, en position de contact à frottement sur la neige lorsqu'une pression verticale est exercée sur le ski, et en position d'ancrage dans la neige, lorsqu'une poussée est exercée vers l'arrière sur le ski.
  • La figure 2 est une vue en coupe verticale et longitudinale d'un ski de fond équipé d'une première forme d'exécution d'un dispositif antirecul suivant l'invention, l'organe d'ancrage étant représenté en position escamotée pendant le glissement du ski vers l'avant.
  • La figure 3 est une vue en coupe verticale et longitudinale semblable à celle de la figure 2, le dispositif antirecul étant représenté avec son organe d'ancrage en position d'ancrage dans la neige, lorsqu'une poussée est exercée vers l'arrière sur le ski.
  • La figure 4 est une vue en coupe verticale et longitudinale partielle, à plus grande échelle, de la zone du ski de fond où est monté le dispositif antirecul représente sur la figure 2, l'organe d'ancrage étant escamoté à l'intérieur de son logement.
  • La figure 5 est une vue de dessous, avec arrachement partiel du dispositif antirecul représenté sur la figure 4.
  • La figure 6 est une vue en plan de l'organe d'ancrage mobile du dispositif de recul représenté sur la figure 4.
  • La figure 7 est une vue en coupe verticale et longitudinale partielle, à plus grande échelle, du dispositif antirecul représenté dans sa position de la figure 4, c'est-à-dire l'organe d'ancrage étant repoussé vers le bas en position d'ancrage dans la neige.
  • La figure 8 est une vue en coupe verticale et longitudinale partielle, à plus grande échelle, de la zone du ski de fond où est montée une variante d'exécution du dispositif antirecul, l'organe d'ancrage étant escamoté à l'intérieur de son logement.
  • La figure 9 est une vue de dessous du boîtier du dispositif antirecul représenté sur la figure 8.
  • La figure 10 est une vue en plan de l'organe d'ancrage du dispositif antirecul représenté sur la figure 8.
  • Les figures 11a et 11b sont des vues en coupe longitudinale et de dessous montrant un mode de réalisation de l'élément antirecul amovible.
  • Les figures 12a, 12b, 12c sont des vues en coupe longitudinale et transversale ainsi qu'une vue de dessous montrant un deuxième mode de réalisation de l'élément anti-recul amovible.
Various embodiments of the present invention will be described below, by way of nonlimiting examples, with reference to the appended drawing in which:
  • Figures 1.1A and 1B are schematic partial vertical and longitudinal elbow views of a cross-country ski equipped with an anti-rollback device according to the invention, the anchoring member of this device being shown respectively in the retracted position in the housing during the sliding of the ski forwards, in position of frictional contact on the snow when a vertical pressure is exerted on the ski, and in position of anchoring in the snow, when a push is exerted towards the back on the ski.
  • Figure 2 is a vertical and longitudinal sectional view of a cross-country ski equipped with a first embodiment of an anti-rollback device according to the invention, the anchoring member being shown in the retracted position during sliding skiing forward.
  • FIG. 3 is a view in vertical and longitudinal section similar to that of FIG. 2, the anti-rollback device being shown with its anchoring member in the anchoring position in the snow, when a thrust is exerted rearward on ski.
  • FIG. 4 is a view in partial vertical and longitudinal section, on a larger scale, of the cross-country ski area where the anti-rollback device is shown in FIG. 2, the anchoring member being retracted inside his accommodation.
  • FIG. 5 is a bottom view, partially broken away of the anti-rollback device shown in FIG. 4.
  • Figure 6 is a plan view of the anchor member mobile of the reversing device shown in FIG. 4.
  • Figure 7 is a partial vertical and longitudinal sectional view, on a larger scale, of the anti-rollback device shown in its position of Figure 4, that is to say the anchoring member being pushed down into position anchor in the snow.
  • FIG. 8 is a view in partial vertical and longitudinal section, on a larger scale, of the cross-country ski area where an alternative embodiment of the anti-rollback device is mounted, the anchoring member being retracted inside his accommodation.
  • FIG. 9 is a bottom view of the casing of the anti-kickback device shown in FIG. 8.
  • FIG. 10 is a plan view of the anchoring member of the anti-rollback device shown in FIG. 8.
  • Figures 11a and 11b are views in longitudinal section and from below showing an embodiment of the removable anti-kickback element.
  • Figures 12a, 12b, 12c are longitudinal and transverse sectional views and a bottom view showing a second embodiment of the removable anti-kickback element.

Sur les figure 1, 1A et 1B est illustré schématiquement le principe mis en oeuvre dans le dispositif antirecul pour ski de fond suivant l'invention. Sur ces figures est représenté partiellement un ski de fond 1 qui glisse sur une couche de neige 2, par sa semelle 3. Pendant la pratique du "pas alternatif" en ski de fond, le ski 1, relié à une chaussure du skieur, glisse de la gauche vers la droite, dans le sens de la flèche a, comme il est représenté sur la figure 1, pendant la moitié du "pas alternatif" puis il est immobilisé sur la neige, comme il est représenté sur les figures 1A et 1B, il sert de point d'appui fixe, pendant l'autre moitié du "pas alternatif", pour permettre au skieur de lancer vers l'avant son autre ski. Dans la partie du ski 1 qui est située de préférence sous la zone d'appui de la chaussure de ski (non représentée), est formé un logement longitudinal 4 qui débouche dans le plan de la semelle 3 et qui contient le dispositif antirecul proprement dit 5. Ce dispositif 5 comprend un organe d'ancrage 6 qui, vu en coupe verticale et longitudinale, présente la forme générale d'un trapèze rectangle dont la petite base est contenue dans la face frontale antérieure 6a de l'organe d'ancrage 6 et la grande base est contenue dans sa face frontale postérieure 6b. La face frontale antérieure 6a est normalement située à distance de la face frontale antérieure 4a du logement 4 si bien qu'un faible jeu longitudinal est ménagé dans le logement 4, en avant de l'organe d'ancrage 6. La face frontale postérieure 6b de l'organe d'ancrage est, elle, située contre la face frontale postérieure 4b du logement 4 ou à faible distance de celle-ci. De ce fait le logement 4 a une longueur un peu supérieure à celle de l'organe d'ancrage 6. Par ailleurs l'organe d'ancrage 6 a une face inférieure horizontale 6c qui est conformée de manière à présenter la meilleure adhérence possible sur la surface de la couche de neige. Cette face horizontale inférieure 6c peut être, par exemple, revêtue d'un morceau de peau de phoque ou bien elle peut présenter des aspérités ou une rugosité adaptées. L'organe d'ancrage 6 a également une face supérieure 6d qui forme une rampe inclinée de bas en haut et d'avant en arrière, c'est-à-dire de la droite vers la gauche sur les figures 1,1A et 1B. Cette rampe supérieure inclinée 6d coopère avec un élément d'actionnement qui, dans l'exemple représenté, est constitué par la face supérieure inclinée 4d délimitant le logement 4 à sa partie supérieure et eu présente la même inclinaison que la rampe 6d. Des moyens sont prévus pour maintenir l'organe d'ancrage 6 appliqué, par sa rampe supérieure inclinée 6d, contre la face supérieure 4d du logement 4. Ces moyens ne sont pas représentés sur les figures schématiques 1,1A et 1B et certaines formes d'exécution non limitatives de ces moyens seront décrites plus loin en référence aux figures 2 à 10.In FIGS. 1, 1A and 1B is schematically illustrated the principle implemented in the anti-rollback device for cross-country skiing according to the invention. In these figures is partially represented a cross-country ski 1 which slides on a layer of snow 2, by its sole 3. During the practice of the "alternative step" in cross-country skiing, ski 1, connected to a shoe of the skier, slides from left to right, in the direction of arrow a, as shown in Figure 1, during half of the "alternate step" then it is immobilized on the snow, as shown in Figures 1A and 1B , it serves as a fixed fulcrum, during the other half of the "alternative step", to allow the skier to launch his other ski forward. In the part of the ski 1 which is preferably located under the support area of the ski boot (not shown), a housing is formed longitudinal 4 which opens into the plane of the sole 3 and which contains the anti-rollback device proper 5. This device 5 comprises an anchoring member 6 which, seen in vertical and longitudinal section, has the general shape of a rectangular trapezoid whose the small base is contained in the front end face 6a of the anchoring member 6 and the large base is contained in its rear end face 6b. The front front face 6a is normally located at a distance from the front front face 4a of the housing 4 so that a slight longitudinal clearance is provided in the housing 4, in front of the anchoring member 6. The rear front face 6b of the anchoring member is, it located against the rear end face 4b of the housing 4 or a short distance from the latter. Therefore the housing 4 has a length slightly greater than that of the anchor member 6. Furthermore the anchor member 6 has a horizontal lower face 6c which is shaped so as to have the best possible adhesion to the surface of the snow layer. This lower horizontal face 6c can be, for example, coated with a piece of seal skin or it can have roughness or suitable roughness. The anchoring member 6 also has an upper face 6d which forms a ramp inclined from bottom to top and from front to back, that is to say from right to left in FIGS. 1,1A and 1B . This inclined upper ramp 6d cooperates with an actuating element which, in the example shown, is constituted by the inclined upper face 4d delimiting the housing 4 at its upper part and had the same inclination as the ramp 6d. Means are provided for keeping the anchoring member 6 applied, by its inclined upper ramp 6d, against the upper face 4d of the housing 4. These means are not shown in the schematic figures 1,1A and 1B and certain non-limiting embodiments of these means will be described later with reference to Figures 2 to 10.

On décrira maintenant le fonctionnement du dispositif antirecul 5 suivant l'invention. Pendant la pratique du de fond, lorsque le skieur fait glisser son ski 1 vers l'avant sur la couche de neige 2, ce mouvement étant illustré par la flèche a sur la figure 1, l'organe d'ancrage 6 se trouve totalement escamoté à l'intérieur du logement 4, sous l'action des moyens de rappel prévus à cet effet, si bien que sa surface inférieure 6c, alors en retrait dans le logement 4, n'est pas appliquée contre la surface supérieure de la couche de neige 2. Il en résulte donc, dans la zone du dispositif antirecul 5, un coefficient de frottement réduit au minimum.The operation of the anti-rollback device 5 according to the invention will now be described. During the practice of the long distance, when the skier slides his ski 1 forwards on the layer of snow 2, this movement being illustrated by the arrow a in FIG. 1, the anchoring member 6 is completely retracted inside the housing 4, under the action of the return means provided for this purpose, so that its lower surface 6c, then recessed in the housing 4, is not applied against the upper surface of the layer of snow 2. This therefore results, in the area of the anti-kickback device 5, a coefficient of friction reduced to a minimum.

Après la phase de glisse vers l'avant le skieur arrête son ski 1 et il commence à prendre appui sur lui pour lui permettre de projeter son autre ski à son tour vers l'avant. Il exerce d'abord une pression verticale vers le bas, sur le ski 1, comme il est représenté par la flèche p sur la figure 1A. Ceci a pour effet d'enfoncer légèrement le ski 1 dans la neige si bien que la face inférieure 6c de l'organe d'ancrage 6 vient en contact, sous une faible pression, avec la surface de la couche de neige 2 à laquelle elle adhère alors légèrement par frottement. Le skieur transforme ensuite progressivement sa pression verticale p en une poussée P vers le bas et vers l'arrière, comme il est illustré par la flèche sur la figure 1B. Cette poussée P donne lieu, à l'endroit du contact des faces inclinées 6d de l'organe d'ancrage 6 et 4d du logement 4, à la création d'une composante de poussée horizontale f dirigée vers l'arrière et à une composante de force f1 dirigée verticalement vers le bas. Du fait du jeu existant entre les faces frontales antérieures 4a du logement 4 et 6a de l'organe d'ancrage 6, le ski 1 et par conséquent le logement 4 peuvent se déplacer légèrement vers l'arrière par rapport à l'organe d'ancrage 6 maintenu fixe par suite du léger frottement de sa face inférieure 6c sur la neige. La face supérieure inclinée 4d du logement 4 se déplace donc légèrement vers l'arrière par rapport à la rampe inclinée supérieure 6d de l'organe d'ancrage 6 avec laquelle elle est en contact et ceci provoque un mouvement vers le bas de l'organe d'ancrage 6, si bien que la face inférieure adhérente 6c de l'organe d'ancrage 6 est pressée, sous l'action de la pression élevée due à la composante de force verticale f1, contre la surface de la couche de neige 2. Du fait de ses propriétés d'adhérence, cette face inférieure 6c s'immobilise fermement dans la neige 2 et l'organe d'ancrage 6 constitue alors une butée engagée et immobilisée dans la neige. A la fin du léger mouvement de glissement vers l'arrière du ski 1 par rapport à l'organe d'ancrage 6 la face frontale antérieure 4a du logement 4 vient s'appliquer contre la face frontale antérieure 6a de l'organe d'ancrage 6, qui est alors immobilisé fermement, et ainsi cet organe d'ancrage 6 s'oppose à tout mouvement additionnel du ski 1 vers l'arrière. Le skieur peut ainsi prendre appui sur son ski bloqué vers l'arrière, ce qui lui permet de relancer vers l'avant son autre ski.After the forward sliding phase, the skier stops his ski 1 and he begins to press on him to allow him to project his other ski in turn forward. It first exerts a vertical downward pressure on the ski 1, as it is represented by the arrow p in FIG. 1A. This has the effect of driving the ski 1 lightly into the snow so that the lower face 6c of the anchoring member 6 comes into contact, under low pressure, with the surface of the snow layer 2 to which it then adheres slightly by friction. The skier then gradually transforms his vertical pressure p into a push P downwards and backwards, as illustrated by the arrow in FIG. 1B. This push P gives rise, at the point of contact of the inclined faces 6d of the anchoring member 6 and 4d of the housing 4, to the creation of a horizontal thrust component f directed towards the rear and to a force component f1 directed vertically downwards. Due to the play existing between the front front faces 4a of the housing 4 and 6a of the anchoring member 6, the ski 1 and therefore the housing 4 can move slightly rearward relative to the body anchor 6 kept fixed due to the slight friction of its lower face 6c on snow. The inclined upper face 4d of the housing 4 therefore moves slightly backwards relative to the upper inclined ramp 6d of the anchoring member 6 with which it is in contact and this causes a downward movement of the member anchor 6, so that the adherent underside 6c of the anchor member 6 is pressed, under the action of the high pressure due to the vertical force component f1, against the surface of the snow layer 2 Due to its adhesion properties, this lower face 6c immobilizes firmly in the snow 2 and the anchoring member 6 then constitutes a stop engaged and immobilized in the snow. At the end of the slight sliding movement towards the rear of the ski 1 relative to the anchoring member 6, the anterior front face 4a of the housing 4 comes to rest against the anterior front face 6a of the anchoring member 6, which is then immobilized firmly, and thus this anchoring member 6 is opposed to any additional movement of the ski 1 towards the rear. The skier can thus rest on his ski blocked towards the rear, which allows him to restart his other ski forwards.

Lorsqu'après avoir fait glisser son autre ski vers l'avant, le skieur prend appui sur ce ski avec son autre pied et commence à exercer une poussée vers l'arrière, il cesse d'exercer la poussée P sur le ski précédemment immobilisé. De ce fait l'organe d'ancrage 6 n'est plus soumis à la forte pression résultant de la composante de force verticale f1. Lorsque le skieur relance alors son premier ski vers l'avant, celui-ci se déplace longitudinalement vers l'avant par rapport à l'organe d'ancrage 6, ce mouvement étant rendu possible par le jeu existant alors entre les faces frontales postérieures 4b du logement 4 et 6b de l'organe d'ancrage 6. L'organe d'ancrage 6 se trouve alors libéré, à sa partie supérieure, par suite du déplacement de la face supérieure inclinée 4d du logement 4 vers l'avant, si bien que l'organe d'ancrage 6 peut être soulevé à l'intérieur du logement 4, par les moyens de rappel, pour venir occuper sa position escamotée représentée sur la figure 1 dans laquelle sa face inférieure 6c est en retrait par rapport au plan de la semelle 3 du ski 1.When after having slid his other ski forward, the skier rests on this ski with his other foot and begins to exert a backward push, he ceases to exert the push P on the previously immobilized ski. As a result, the anchoring member 6 is no longer subjected to the high pressure resulting from the vertical force component f1. When the skier then relaunches his first ski forward, it moves longitudinally forward with respect to the anchoring member 6, this movement being made possible by the play then existing between the rear front faces 4b of the housing 4 and 6b of the anchoring member 6. The anchoring member 6 is then released, at its upper part, as a result of the displacement of the inclined upper face 4d of the housing 4 forwards, if although the anchoring member 6 can be raised inside the housing 4, by the return means, to come to occupy its retracted position shown in FIG. 1 in which its lower face 6c is set back relative to the plane of the sole 3 of the ski 1.

On décrira maintenant, en se référant plus particulièrement aux figures 2 à 7, une forme d'exécution particulière du dispositif antirecul suivant l'invention. Dans cette forme d'exécution le dispositif antirecul comprend un organe d'ancrage 7 qui est constitué par une barre allongée dans le sens longitudinal, de forme générale parallèlépipèdique et dont la face horizontale inférieure est en contact avec une membrane flexible et élastique 8 qui présente, sur sa face inférieure, des propriétés d'adhérence vis-à-vis de la neige et qui peut être constituée, par exemple, par une peau de phoque. Cette membrane flexible 8 s'étend sous la totalité de la longueur de la barre 7 et elle est ancrée, par ses deux parties extrêmes 8a et 8b, dans le logement 4. Cet ancrage est assuré par coincement des parties extrêmes 8a et 8b de la membrane 8 entre les faces frontales postérieure 4b et antérieure 4a du logement 4, d'une art, et deux blocs 9 et 11 fixés respectivement dans les deux angles supérieurs du logement 4, d'autre part. Le bloc d'angle postérieur 9 est accolé contre la face frontale postérieure 4b du logement 4, dans l'angle supérieur et postérieur ce ce logement, et il comprend à cet endroit une nervure transversale inférieure 9a qui se termine par une face inférieure 9b inclinée de bas en haut et d'avant en arrière. Cette face inférieure inclinée 9b est située un peu au-dessus du plan de la semelle 3 du ski et elle est en regard d'un creux 12 formé dans la partie centrale de la semelle 3 du ski et dont la face supérieure s'étend entre la semelle 3 et la face frontale postérieure 4b du logement, en étant ainsi inclinée de bas en haut et d'arrière en avant. En position escamotée de la barre d'ancrage 7 à l'intérieur du logement 4, la partie extrême 8a de la membrane 8 qui est pincée, à sa partie supérieure, entre la face frontale postérieure 4b du logement 4 et le bloc d'angle postérieur 9, s'étend à la verticale vers le bas, sur une faible distance en dessous de la face inférieure inclinée 9b, et elle s'incurve vers l'avant pour former le tronçon horizontal de la membrane appliquée sous la barre d'ancrage 7.We will now describe, with particular reference to Figures 2 to 7, a particular embodiment of the anti-rollback device according to the invention. In this embodiment, the anti-rollback device comprises an anchoring member 7 which is constituted by a bar elongated in the longitudinal direction, of generally parallelepipedal shape and the lower horizontal face of which is in contact with a flexible and elastic membrane 8 which has , on its underside, adhesion properties vis-à-vis snow and which may be constituted, for example, by a seal skin. This flexible membrane 8 extends under the entire length of the bar 7 and it is anchored, by its two end parts 8a and 8b, in the housing 4. This anchoring is ensured by wedging the end parts 8a and 8b of the membrane 8 between the rear 4b and anterior 4a front faces of the housing 4, of an art, and two blocks 9 and 11 fixed respectively in the two upper corners of the housing 4, on the other hand. The rear corner block 9 is placed against the rear front face 4b of the housing 4, in the upper and rear corner of this housing, and at this point it includes a lower transverse rib 9a which ends in an inclined lower face 9b from bottom to top and back and forth. This inclined lower face 9b is situated a little above the plane of the sole of the ski 3 and it is opposite a hollow 12 formed in the central part of the sole 3 of the ski and the upper face of which extends between the sole 3 and the rear front face 4b of the housing, thus being inclined from bottom to top and from back to front. In the retracted position of the anchor bar 7 inside the housing 4, the end part 8a of the membrane 8 which is pinched, at its upper part, between the rear front face 4b of the housing 4 and the corner block posterior 9, extends vertically downwards, for a short distance below the inclined lower face 9b, and it bends forward to form the horizontal section of the membrane applied under the anchor bar 7.

Le bloc d'angle postérieur 9 présente également, dans sa partie antérieure, une face 9c en saillie vers le bas, qui est inclinée de bas en haut et d'avant en arrière et qui constitue une rampe coopérant avec une face supérieure 7a, ayant la même inclinaison, de la barre longitudinale 7. Cette face supérieure inclinée 7a constitue la partie inférieure d'un creux prévu dans la partie supérieure de la barre longitudinale 7 et dans lequel est engagée la partie extrée antérieure du bloc d'angle postérieur 9.The rear corner block 9 also has, in its front part, a face 9c projecting downwards, which is inclined from bottom to top and from front to back and which constitutes a ramp cooperating with an upper face 7a, having the same inclination, of the longitudinal bar 7. This inclined upper face 7a constitutes the lower part of a recess provided in the upper part of the longitudinal bar 7 and in which is engaged the front end part of the rear corner block 9 .

La barre d'ancrage longitudinale 7 présente également, dans sa face supérieure, sensiblement dan sa partie médiane, un autre creux délimité par une face inclinée 7b formant rampe. Dans ce creux est engagé un bloc intermédiaire 13 qui est fixé à la face horizontale supérieure 4d du logement 4 et qui se termine par une face inférieure inclinée 13a. Les faces inclinées 7b et 13a qui sont en contact l'une avec l'autre, ont la même inclinaison que les faces inclinées 7a et 9c.The longitudinal anchor bar 7 also has, in its upper face, substantially in its middle part, another hollow delimited by an inclined face 7b forming a ramp. In this hollow is engaged an intermediate block 13 which is fixed to the upper horizontal face 4d of the housing 4 and which ends in an inclined lower face 13a. The inclined faces 7b and 13a which are in contact with each other, have the same inclination as the inclined faces 7a and 9c.

Le bloc d'angle antérieur 11 est réalisé sensiblement de la même façon que le bloc d'angle postérieur 9 et il comprend une nervure inférieure et antérieure 11a qui est appliquée contre la face frontale antérieure 4a du logement 4, avec pincement entre elles de la partie extrême antérieure 8b de la membrane 8. Le bloc d'angle antérieur 11 présente également, dans sa partie postérieure, une face inclinée 11c en saillie vers le bas qui est engagée dans un creux correspondant ménagé dans la partie antérieure de la face supérieure de la barre d'ancrage 7, ce creux étant délimité par une face inclinée 7c. Les faces inclinées 7c et 11c ont la même inclinaison que les autres faces inclinées coopérant entre elles à savoir les faces 7a et 9c et les faces 7b et 13a.The front corner block 11 is produced substantially in the same way as the rear corner block 9 and it comprises a lower and front rib 11a which is applied against the front front face 4a of the housing 4, with pinching between them of the anterior extreme part 8b of the membrane 8. The anterior corner block 11 also has, in its posterior part, an inclined face 11c projecting downwards which is engaged in a corresponding hollow formed in the anterior part of the upper face of the anchor bar 7, this hollow being delimited by an inclined face 7c. The inclined faces 7c and 11c have the same inclination as the other inclined faces cooperating with each other, namely the faces 7a and 9c and the faces 7b and 13a.

Le dispositif antirecul comporte par ailleurs des organes limitant la course verticale admissible vers le bas de la barre d'ancrage 7. Ces organes 14 sont constitués par des tiges verticales traversant des trous percés dans la barre d'ancrage 7, fixées, à leurs extrémités supérieures, a la face supérieure 4d du logement 4 et dont les extrémités inférieures sont solidaires des têtes 15 disposées dans des logements 16 prévus dans la face horizontale inférieure de la barre d'ancrage 7. Les logements 16 ont une hauteur supérieure à l'épaisseur des têtes 15 si bien que la barre d'ancrage 7 peut se déplacer vers le bas jusqu'à ce que les fonds supérieurs des logements 16 viennent en contact avec les têtes 15 fixées aux extrémités inférieures des tiges 14.The anti-rollback device also comprises members limiting the admissible vertical downward stroke of the anchor bar 7. These members 14 are constituted by vertical rods passing through holes drilled in the anchor bar 7, fixed, at their upper ends, to the upper face 4d of the housing 4 and whose lower ends are integral with the heads 15 arranged in housings 16 provided in the lower horizontal face of the anchor bar 7. The housings 16 have a height greater than the thickness of the heads 15 so that the anchor bar 7 can move towards the bottom until the upper bottoms of the housings 16 come into contact with the heads 15 fixed to the lower ends of the rods 14.

Le bloc d'angle postérieur 9, le bloc intermédiaire 13 et le bloc d'angle antérieur 11 peuvent être constitués par des blocs individuels fixés par tous moyens appropriés à la face horizontale supérieure 4d du logement 4. Suivant une variante ils peuvent être reliés les uns aux autres en constituant une barre de commande commune fixée dans son ensemble à la face horizontale supérieure 4d du logement 4. Dans ce dernier cas les organes 14 limitant la course verticale de la barre d'ancrage 7 peuvent être avantageusement fixés à cette barre de commande commune supérieure.The rear corner block 9, the intermediate block 13 and the front corner block 11 can be constituted by individual blocks fixed by any suitable means to the upper horizontal face 4d of the housing 4. According to a variant, they can be connected to the to each other by constituting a common control bar fixed as a whole to the upper horizontal face 4d of the housing 4. In the latter case, the members 14 limiting the vertical stroke of the anchor bar 7 can advantageously be fixed to this bar. superior common control.

Le fonctionnement du dispositif antirecul qui a été décrit en référence aux figures 4 à 7 et qui est représenté monté sur le ski 1 sur les figures 2 et 3, est le même, dans son principe, que celui qui a été exposé à propos de la forme d'exécution schématique illustrée sur les figures 1,1A et 1B. Lorsque le ski 1 glisse vers l'avant, suivant la flèche a, la barre d'ancrage 7 se trouve maintenue escamotée, par la membrane élastique 8, dans le logement 4, comme il est représenté sur les figures 2 et 4. Dans ce cas la membrane horizontale inférieure 8, par exemple en peau de phoque, s'étend sensiblement dans le plan horizontal de la semelle 3 ou un peu en retrait par rapport à ce plan. Il en résulte donc un frottement minimum sur la neige. Par contre, lorsque le skieur exerce une poussée P vers le bas et vers l'arrière sur son ski 1, le dispositif antirecul devient actif comme il est représenté sur les figures 3 et 7. Les faces inférieures inclinées 9c,13a,11c des blocs 9,13 et 11 glissent alors vers l'arrière sur les rampes inclinées respectives 7a,7b,7c de la barre d'ancrage 7, ce qui provoque un déplacement de l'ensemble de cette barre d'ancrage 7, parallèlement à elle-même, vers le bas. Ce mouvement est limité par les organes d'arrêt verticaux 14. Il en résulte que la barre d'ancrage 7 et la membrane 8 en peau de phoque font légèrement saillie en-dessous du plan de la semelle 3 du ski 1, comme il est représenté sur les figures 3 et 7, ce qui assure l'accrochage et l'immobilisation du ski sur la neige. Il est à noter que dans cette position la partie extrême postérieure 8a de la membrane 8 est tendue et est appliquée contre la face inférieure 9b de la nervure postérieure et inférieure 9a du bloc d'angle postérieur 9.The operation of the anti-rollback device which has been described with reference to FIGS. 4 to 7 and which is shown mounted on the ski 1 in FIGS. 2 and 3, is the same, in principle, as that which has been explained in connection with the schematic embodiment illustrated in Figures 1,1A and 1B. When the ski 1 slides forward, along arrow a, the anchor bar 7 is kept retracted, by the elastic membrane 8, in the housing 4, as it is shown in Figures 2 and 4. In this case the lower horizontal membrane 8, for example made of seal skin, extends substantially in the horizontal plane of the sole 3 or slightly recessed with respect to this plane. This therefore results in minimum friction on the snow. By cons, when the skier exerts a push P downwards and backwards on his ski 1, the anti-rollback device becomes active as shown in FIGS. 3 and 7. The inclined lower faces 9c, 13a, 11c of the blocks 9,13 and 11 then slide backwards on the respective inclined ramps 7a, 7b, 7c of the anchor bar 7, which causes displacement of the assembly of this anchor bar 7, parallel to it- even, down. This movement is limited by the vertical stop members 14. As a result, the anchor bar 7 and the seal skin membrane 8 protrude slightly below the plane of the sole 3 of the ski 1, as it is shown in Figures 3 and 7, which ensures the attachment and immobilization of the ski on snow. It should be noted that in this position the posterior end portion 8a of the membrane 8 is stretched and is applied against the underside 9b of the posterior and bottom rib 9a of the posterior corner block 9.

Dans cette forme d'exécution la membrane élastique 8 joue le rôle de ressort de rappel pour ramener la barre d'ancrage 7 escamotée dans le logement 4, lorsque la poussée P vers l'arrière ne s'exerce plus sur le ski 1.In this embodiment, the elastic membrane 8 acts as a return spring to bring the anchoring bar 7 retracted into the housing 4, when the backward push P is no longer exerted on the ski 1.

Dans la variante d'exécution représentée sur les figures 8,9 et 10 le dispositif antirecul suivant l'invention comprend un boîtier parallélépipèdique 17 qui est emboîté étroitement et fixé dans le logement 4 et qui est ouvert à sa partie inférieure. Le boîtier 17 est fixé à l'intérieur du logement 4 par tous moyens appropriés, par exemple par collage ou vissage. La paroi horizontale supérieure 17a boîtier 17 présente deux plots 18 et 19 distants l'un de l'autre dans le sens longitudinal en saillie vers le bas et qui présentent, vu en coupe verticale et longitudinale, la forme de triangles rectangles identiques. Les faces inférieures inclinées 18a,19a des plots 18,19 qui constituent les hypothénuses des triangles rectangles, sont inclinées d'un même angle de bas en haut et d'avant en arrière et elles provoquent le mouvement vertical vers le bas d'une barre d'ancrage longitudinale 21 de forme parallélépipèdique, logée étroitement dans le boîtier 17. Cette barre d'ancrage 21 présente une face inférieure adaptée pour obtenir une bonne adhérence sur la neige, par exemple par railiurage, fixation d'une peau de phoque etc. Elle présente également, dans sa surface supérieure 21a, deux creux ayant chacun, vu en coupe verticale et longitudinale, la forme d'un triangle rectangle et dans lesquels sont respectivement engagés les deux plots 18,19. Ces creux sont délimités par des faces 21b,21c inclinées de bas en haut et d'avant en arrière et qui se raccordent à la face supérieure 21a de la barre 21. Les faces inclinées 18a et 21b sont en contact l'une avec l'autre, les faces inclinées 19a et 21c sont en contact l'une avec l'autre et elles ont toutes la même inclinaison.In the alternative embodiment shown in FIGS. 8, 9 and 10, the anti-rollback device according to the invention comprises a parallelepipedic housing 17 which is tightly fitted and fixed in the housing 4 and which is open at its lower part. The housing 17 is fixed inside the housing 4 by any suitable means, for example by gluing or screwing. The upper horizontal wall 17a housing 17 has two studs 18 and 19 distant from each other in the longitudinal direction projecting downward and which have, seen in vertical and longitudinal section, the shape of identical right triangles. The inclined lower faces 18a, 19a of the studs 18,19 which constitute the hypotheses of the right triangles, are inclined at the same angle from bottom to top and from front to back and they cause the vertical movement of a bar longitudinal anchor 21 of parallelepiped shape, tightly housed in the housing 17. This anchor bar 21 has a lower face adapted to obtain good grip on snow, for example by railing, fixing of a seal skin etc. It also has, in its upper surface 21a, two recesses each having, seen in vertical and longitudinal section, the shape of a right triangle and in which the two studs 18,19 are respectively engaged. These recesses are delimited by faces 21b, 21c inclined from bottom to top and from front to back and which are connected to the upper face 21a of the bar 21. The inclined faces 18a and 21b are in contact with one another. other, the inclined faces 19a and 21c are in contact with one another and they all have the same inclination.

Par ailleurs des moyens de guidage sont prévus aux deux extrémités longitudinales du boîtier 17 et de la barre d'ancrage 21, pour permettre le mouvement vertical de la barre d'ancrage 21 vers le bas tout en garantissant une étanchéité vers l'intérieur du boîtier 17.Furthermore, guide means are provided at the two longitudinal ends of the housing 17 and of the anchor bar 21, to allow the vertical movement of the anchor bar 21 downward while guaranteeing a seal towards the interior of the housing. 17.

A son extrémité postérieure la barre d'ancrage 21 est prolongée par une lèvre transversale 22 qui est inclinée de bas en haut et d'avant en arrière. Cette lèvre 22 est engagée dans une fente 23 qui est formée dans la paroi transversale postérieure 17b du boîtier 17 et qui présente la même inclinaison que la lèvre 22, ainsi que les faces 18a,21b,19a,21c.At its rear end the anchor bar 21 is extended by a transverse lip 22 which is inclined from bottom to top and from front to back. This lip 22 is engaged in a slot 23 which is formed in the rear transverse wall 17b of the housing 17 and which has the same inclination as the lip 22, as well as the faces 18a, 21b, 19a, 21c.

Dans sa partie extrême antérieure la barre d'ancrage 21 présente une face frontale 21d qui est inclinée de bas en haut et d'avant en arrière, avec le même angle d'inclinaison que la lèvre postérieure 22, la fente 23 et les faces inclinées en contact 18a,21b,19a,21c. Cette face frontale antérieure inclinée 21d de la barre d'ancrage 21 est en contact avec une face 17c, de même inclinaison, prévue dans la partie antérieure du boîtier 17. En outre la barre d'ancrage 21 présente, dans sa partie extrême antérieure, deux nervures latérales opposées 24 qui sont en saillie par rapport aux faces verticales et latérales de la barre d'ancrage 21 et qui sont inclinées du même angle que les faces 21d et 17c. Ces nervures inclinées 24 sont engagées dans des rainures inclinées 25 de même pente qui sont prévues dans les parties antérieures des faces internes des deux parois verticales et latérales du boîtier 17.In its anterior end portion, the anchor bar 21 has a front face 21d which is inclined from the bottom up and from front to back, with the same inclination angle as the rear lip 22, the slot 23 and the inclined faces. in contact 18a, 21b, 19a, 21c. This inclined front end face 21d of the anchor bar 21 is in contact with a face 17c, of the same inclination, provided in the front part of the housing 17. In addition, the anchor bar 21 has, in its front end part, two opposite lateral ribs 24 which project from the vertical and lateral faces of the anchor bar 21 and which are inclined at the same angle as the faces 21d and 17c. These inclined ribs 24 are engaged in inclined grooves 25 of the same slope which are provided in the anterior parts of the internal faces of the two vertical and lateral walls of the housing 17.

D'après la description qui précède, on voit que la barre d'ancrage 21 est retenue dans le boîtier 17 et guidée par rapport à celui-ci d'une part à son extrémité postérieure, par suite de l'engagement de la lèvre postérieure inclinée 22 dans la fente inclinée 23 du boîtier 17, et d'autre part à son extrémité antérieure, par suite de ses nervures latérales inclinées 24 engagées dans les rainures inclinées 25 du boîtier 17. Ces organes de guidage assurent l'étanchéité aux deux extrémités longitudinales du dispositif antirecul et cette étanchéité est également assurée, le long des faces latérales de la barre d'ancrage 21 et du boîtier 17, par suite de l'emboîtement étroit de la barre 21 dans ce boîtier.From the above description, we see that the anchor bar 21 is retained in the housing 17 and guided relative to the latter on the one hand at its rear end, as a result of the engagement of the rear lip inclined 22 in the inclined slot 23 of the housing 17, and on the other hand at its anterior end, as a result of its inclined lateral ribs 24 engaged in the inclined grooves 25 of the housing 17. These guide members provide sealing at the two longitudinal ends of the anti-rollback device and this sealing is also ensured along the lateral faces of the anchor bar 21 and of the housing 17, as a result of the 'narrow fitting of the bar 21 in this housing.

Il est à noter que dans la forme d'éxécution représentée sur les figures 8 à 10 la barre d'ancrage 21 est montée librement dans le boîtier 17 et qu'elle n'est appliquée sous pression contre la surface de la neige que losqu'une poussée vers l'arrière s'exerce sur le ski 1, cette poussée étant transformée, comme dans le cas des formes d'éxécution précédemment décrites, en pression vers le bas, par suite de la coopération des surfaces inclinées 18a, 21b,et 19a, 21c.It should be noted that in the embodiment shown in Figures 8 to 10 the anchor bar 21 is freely mounted in the housing 17 and that it is applied under pressure against the snow surface only when a backward thrust is exerted on the ski 1, this thrust being transformed, as in the case of the embodiments previously described, into downward pressure, as a result of the cooperation of the inclined surfaces 18a, 21b, and 19a, 21c.

Comme il a été précisé ci-dessus, il existe différents moyens s'opposant au recul du ski (écailles, fart, peau de phoque, ...) correspondant à différents types de neige et qui sont plus ou moins longs et complexes à mettre en place sous le ski.As it was specified above, there are various means opposing the retreat of the ski (scales, wax, seal skin, ...) corresponding to different types of snow and which are more or less long and complex to put in place under the ski.

Les fig. 11a et 11b montrent une solution avantageuse pour résoudre ce problème : sous l'organe d'ancrage 6 une plaque amovible 63 supportant le système anti-recul 64 peut être mise en place et enlevée rapidement. Pour cela, la face inférieure de l'organe d'ancrage 6 comporte un évidement 61 qui sert de logement à un boîtier 62 fixé dans l'évidement 61 par tout moyen tel que vissage, collage, soudage, ...La plaque amovible 63 vient s'encastrer dans le boîtier 62 et tient en place par frottement ou encliquetage. Sur cette plaque amovible est fixé le système anti-recul 64 que l'on désire utiliser sous le ski. Il suffit que le skieur possède plusieurs plaques amovibles 63, avec sur chacune d'entre elle un ou plusieurs systèmes anti-recul pour pouvoir choisir au dernier moment le système le mieux adapté aux circonstances. Il est également possible qu'une plaque amovible 63 ne possède pas de système anti-recul sur tout ou partie de sa surface.Figs. 11a and 11b show an advantageous solution for solving this problem: under the anchoring member 6 a removable plate 63 supporting the anti-recoil system 64 can be quickly put in place and removed. For this, the underside of the anchoring member 6 has a recess 61 which serves as a housing for a housing 62 fixed in the recess 61 by any means such as screwing, gluing, welding, etc. The removable plate 63 comes to be embedded in the housing 62 and holds in place by friction or snap-fastening. On this removable plate is fixed the anti-recoil system 64 which one wishes to use under the ski. It suffices that the skier has several removable plates 63, with on each of them one or more anti-recoil systems to be able to choose at the last moment the system best suited to the circumstances. It is also possible that a removable plate 63 does not have an anti-recoil system on all or part of its surface.

Un autre mode de réalisation du boîtier 62 et de la plaque amovible 63 est représenté fig. 12a, 12b, 12c. Le boîtier 62 comporte deux rainures 65, la plaque amovible 63 coulissant dans ces rainures 65. Afin de permettre la mise en place de la plaque amovible 63 par coulissement dans le boîtier 62, la rainure 65 est supprimée dans une extrémité 66 pour pouvoir déformer en flexion la plaque amovible 63 comme cela est représenté en trait pointillé 67 pour que la plaque amovible 63 puisse passer au dessus du rebord 68 du boîtier 62 aussi bien lors de la mise en place que lors de l'extraction de la plaque amovible 63. Une encoche 69, prévue dans la plaque amovible 63 (ou dans le rebord 68) facilite la manoeuvre pour extraire cette plaque.Another embodiment of the housing 62 and the removable plate 63 is shown in FIG. 12a, 12b, 12c. The housing 62 has two grooves 65, the removable plate 63 sliding in these grooves 65. In order to allow the removable plate 63 to be put in place by sliding in the housing 62, the groove 65 is removed in one end 66 in order to be able to deform in bending the removable plate 63 as shown in dotted lines 67 so that the removable plate 63 can pass over the rim 68 of the housing 62 both during installation and when extracting the removable plate 63. A notch 69, provided in the removable plate 63 (or in the rim 68) facilitates the maneuver to extract this plate.

Claims (20)

  1. Cross country ski provided with an anti-return device of the type having a mobile anchoring element (6, 7, 21) assembled in a housing (4) formed in the ski (1) and joining in the lower sole (3) thereof, such anchoring element (6, 7, 21) capable of occupying, when ski (1) is subject to a rearward thrust, a first anchoring position in the snow, in which its lower portion projects downwardly under sole (3) of the ski, to be immobilized in the snow or, when the ski (1) slides frontwardly, a second retracted position, in which the lower portion of the anchoring element (6, 7, 21) is hidden in its housing (4), characterized:
    - in that the anchoring element (6, 7, 21) has at least one upper surface (6d; 7a, 7b, 7c; 21b, 21c) forming a ramp inclined base-up and from the front to the rear, means being provided to maintain the or each upper surface (6d; 7a, 7b, 7c; 21b, 21c) forming the inclined ramp of anchoring element (6, 7, 21) in contact with at least one activating element (4d; 9c, 13a, 11c; 18a, 19a) provided at the upper portion of housing (4) and able to slide longitudinally on the or each upper surface (6d; 7a, 7b, 7c; 21b, 21c) forming the inclined ramp, and a longitudinal clearance is arranged between housing (4) and anchoring element (6, 7, 21), to enable a slight relative longitudinal displacement of the ski (1) and of its housing (4) with respect to anchoring element (6, 7, 21);
    - in that it comprises elastic return means (8) of the anchoring element (7) within housing (4); and
    - in that it comprises means (22, 23, 24, 25) to guide and retain the anchoring element (21) during its relative motion within housing (4).
  2. Ski as per claim 1, characterized in that the device comprises an anchoring bar (7), having a generally parallelopiped-like shape, elongate in the longitudinal direction, whose lower horizontal surface is in contact with a flexible and elastic membrane (8), which has, on its lower surface, adherence properties with respect to the snow.
  3. Ski as defined by claim 2, characterized in that the flexible membrane (8) extends beneath the entirety of the length of the anchoring bar (7) and its two end portions (8a, 8b) are anchored in housing (4).
  4. Ski as defined by claim 3, characterized in that the end portions (8a, 8b) of the membrane (8) are wedged between the rear frontal surface (4b) and front frontal surface (4a) of housing (4), on the one hand, and two blocks (9, 11) fixed respectively in the two upper angles of housing (4).
  5. Ski as defined by claim 4, characterized in that the rear angle block (9) which is applied against the rear frontal surface (4b) of housing (4), in the upper and rear angle of such housing, comprises a lower transverse rib (9a) which ends by a lower surface (9b) inclined from the base-up and from the front to the rear.
  6. Ski as defined by claim 5, characterized in that the lower inclined surface (9b) of rib (9a) of the rear angle block (9) is located a little above the plane of sole (3) of the ski and is across from a hollow (12) formed in the central portion of sole (3) of the ski and whose upper surface extends between sole (3) and the rear frontal surface (4b) of housing (4), which is thus inclined from the base up and from the rear to the front.
  7. Ski as per any of claims 4 to 6, characterized in that the rear angle block (9) has, in its front portion, a surface (9c) projecting downwardly, which is inclined from the base up and from the front to the rear and which constitutes a ramp cooperating with an upper surface (7a), having the same inclination, of anchoring bar (7), such inclined upper surface (7a) constituting the lower portion of an upper hollow of the longitudinal bar (7) in which the front end portion of the rear angle block (9) is engaged.
  8. Ski as defined by any of claims 4 to 7, characterized in that the device comprises an intermediate block (13) which is fixed at the upper horizontal surface (4d) of housing (4) and which ends by a lower inclined surface (13a) which is in contact with an inclined surface (7b) forming a ramp demarcating a hollow formed in the upper surface of anchoring bar (7), substantially in its median zone.
  9. Ski as defined by any of claims 4 to 8, characterized in that the front angle block (11) comprises a lower and front rib (11a) which is applied against the front frontal surface (4a) of housing (4), to maintain by pinching, the front end portion (8b) of membrane (8) and, in its rear portion, an inclined surface (11c) projecting downwardly which is engaged in a corresponding hollow arranged in the front portion of the upper surface of the anchoring bar (7), such hollow being demarcated by an inclined surface (7c) having the same slope.
  10. Ski as defined by any of claims 4 to 9, characterized in that the device comprises means (14, 15) limiting the possible vertical downward path of the anchoring bar (7).
  11. Ski as defined by claim 10, characterized in that the means (14, 15) limiting the vertical path of the anchoring bar (7) are constituted by vertical rods (14) crossing holes bored in the anchoring bar (7), fixed, at their upper ends, to the upper surface (4d) of housing (4) and whose lower ends are affixed to heads (15) located in housings (16) provided in the lower horizontal surface of anchoring bar (7), such housings (16) having a height which is greater than the thickness of heads (15).
  12. Ski as defined by any of claims 4 to 11, characterized in that the rear angle block (9), the intermediate block (13) and the front angle block (11) are constituted by independent blocks fixed individually to the upper surface (4d) of such housing (4).
  13. Ski as defined by any of claims 4 to 11, characterized in that the rear block (9), the intermediate block (13) and the front angle block (11) form a single element and they form an integral part of a longitudinal bar extending along the entire length of housing (4) and fixed to the upper surface (4d) of such housing (4).
  14. Ski as defined by any of claims 1 or 2 characterized in that the device comprises a parallelopiped casing (17) which is tightly nested and fixed in housing (4) and which is open at its lower portion, and a longitudinal anchoring bar (21) tightly housed in casing (17) and mobile therein.
  15. Ski as defined by claim 14, characterized in that the upper horizontal wall (17a) of casing (17) has at least two plugs (18, 19) distanced from one another in the longitudinal direction, projecting downwardly, said plugs having in a vertical and longitudinal section, the shape of identical right angled triangles, the lower inclined surfaces (18a, 19a) of plugs (18, 19) which constitute the hypotenuses of such right angled triangles, are inclined by the same angle from the base up and from the front to the rear, and the anchoring bar (21) has, in its upper surface (21a), at least two hollows in which are respectively engaged the two plugs (18, 19), such hollows being demarcated by inclined surfaces (21b, 21c) having the same slope as the lower inclined surfaces (18a, 19a) of plugs (18, 19) and in contact therewith.
  16. Ski as defined by claim 15, characterized in that the anchoring bar (21) is extended, at its rear end, by a transverse lip (22) which is inclined from the base up and from the front to the rear and which is engaged in a slot (23), having the same inclination, which is formed in the rear transverse wall (17b) of casing (17), the lip (22) and the slot (23) having the same inclination as the lower inclined surfaces (18a, 19a) of plugs (18, 19) and the upper inclined surfaces (21b, 21c) of anchoring bar (21).
  17. Ski as defined by any of claims 15 and 16 characterized in that the anchoring bar (21) has, in its front end portion, a front frontal inclined surface (21d) in contact with a surface (17c) having the same inclination, provided in the front portion of casing (17), the anchoring bar (21) also having, in its front end portion, two lateral inclined opposing ribs (24) which project with respect to the vertical and lateral surfaces of the anchoring bar (21), such inclined ribs (24) being engaged in inclined grooves provided in the front portions of the internal surfaces of the two vertical and lateral walls of casing (17), the front frontal surface (21d) of the anchoring bar (21), its opposite lateral ribs (24) and the grooves (25) of casing (17) all having the same inclination from the base up and from the front to the rear, such inclination being the same as that of the inclined surfaces (18a, 19a) of plugs (18, 19 and 21b, 21c) of the anchoring bar (21).
  18. Ski as per any of the preceding claims, characterized in that the device comprises a removable plate (63) beneath anchoring element (6) bearing an anti-return system (64).
  19. Ski as defined by claim 18, characterized in that the removable plate (63) is embedded in a casing (62).
  20. Ski as defined by claim 19, characterized in that the removable plate (63) slides in the grooves (65) of such casing (62).
EP90116861A 1989-09-28 1990-09-03 Device to oppose backward gliding for cross-country skiing Expired - Lifetime EP0422382B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8912710A FR2652271B1 (en) 1989-09-28 1989-09-28 ANTI-BACKUP DEVICE FOR CROSS-COUNTRY SKIING.
FR8912710 1989-09-28

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EP0422382A1 EP0422382A1 (en) 1991-04-17
EP0422382B1 true EP0422382B1 (en) 1994-12-07

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EP90116861A Expired - Lifetime EP0422382B1 (en) 1989-09-28 1990-09-03 Device to oppose backward gliding for cross-country skiing

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US (1) US5221104A (en)
EP (1) EP0422382B1 (en)
DE (1) DE69014813T2 (en)
FR (1) FR2652271B1 (en)

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US476572A (en) * 1892-06-07 stone
DE388302C (en) * 1922-06-28 1924-01-11 Banning & Seybold Dutch milling process
CH215418A (en) * 1938-05-19 1941-06-30 Miesen Erich Skis with anti-skid device.
CH202271A (en) * 1941-02-13 1939-01-15 Huguenin Alfred Ski with anti-slip device.
CH234813A (en) * 1943-07-30 1944-10-31 Floteron Hans Ski fitted with a seal skin fixing device.
DE870369C (en) * 1951-02-18 1953-03-12 Heinrich Dr Welker Surface for ski treads with a large number of thin plates that increase the resistance to sliding backwards
CH326988A (en) * 1955-05-09 1958-01-15 Tribelhorn Emile Climbing and braking device on skis
CH340748A (en) * 1958-04-01 1959-08-31 Ruedin Jules Ski
FR2307559A1 (en) * 1975-04-17 1976-11-12 Grosfilley Jean Pierre Running surface for long distance ski - flexible plastic teeth aid climbing without affecting downhill sliding
CH608720A5 (en) * 1976-12-21 1979-01-31 Henri Philippe Nidecker
DE2949688A1 (en) * 1979-12-11 1981-06-19 Fa. Helga Woditsch, 8229 Fridolfing Climbing aid attachment for skis - is made as plate shaped tongues in one piece with running surface layer and linked to it by hinge system
US4398746A (en) * 1981-01-12 1983-08-16 Heintz Gary R Adjustable waxless ski base
US4674764A (en) * 1984-07-30 1987-06-23 Lines West Traction device for skis

Also Published As

Publication number Publication date
FR2652271B1 (en) 1992-01-10
FR2652271A1 (en) 1991-03-29
DE69014813D1 (en) 1995-01-19
DE69014813T2 (en) 1995-05-11
EP0422382A1 (en) 1991-04-17
US5221104A (en) 1993-06-22

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