EP1803362B1 - Sport shoe with lateral oscillation - Google Patents

Sport shoe with lateral oscillation Download PDF

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Publication number
EP1803362B1
EP1803362B1 EP20050425925 EP05425925A EP1803362B1 EP 1803362 B1 EP1803362 B1 EP 1803362B1 EP 20050425925 EP20050425925 EP 20050425925 EP 05425925 A EP05425925 A EP 05425925A EP 1803362 B1 EP1803362 B1 EP 1803362B1
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EP
European Patent Office
Prior art keywords
shoe
connecting element
sliding gear
sole
gear according
Prior art date
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Active
Application number
EP20050425925
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German (de)
French (fr)
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EP1803362A1 (en
Inventor
Giovanni Girolimetto
Bertrand Barre
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lange International SA
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Lange International SA
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Priority to EP20050425925 priority Critical patent/EP1803362B1/en
Priority to DE200560016132 priority patent/DE602005016132D1/en
Publication of EP1803362A1 publication Critical patent/EP1803362A1/en
Application granted granted Critical
Publication of EP1803362B1 publication Critical patent/EP1803362B1/en
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    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole-and-heel integral units
    • A43B13/14Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18Resilient soles
    • A43B13/187Resiliency achieved by the features of the material, e.g. foam, non liquid materials
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00Footwear for sporting purposes
    • A43B5/04Ski or like boots
    • A43B5/0415Accessories
    • A43B5/0417Accessories for soles or associated with soles of ski boots; for ski bindings
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00Footwear for sporting purposes
    • A43B5/04Ski or like boots
    • A43B5/0427Ski or like boots characterised by type or construction details
    • A43B5/0466Adjustment of the side inclination of the boot leg; Canting

Definitions

  • the present invention relates to a rigid-shell sports shoe for gliding apparatus, such as ski or skate, comprising a structure particularly adapted to the transmission of the user's efforts to the gliding machine for its effective guidance. It also relates to a method of manufacturing such a shoe.
  • a sports shoe for gliding gear serves as an interface between the body and the gliding device, this interface being responsible for directing the forces in favorable directions in order to pass on the tension quickly. athlete's muscle to the gliding device effectively to react to changes in situations that occur during a descent.
  • the ski boots are based on a rigid stem up to the shin, equipped with a comfort liner to thermally isolate the foot and having both the function of reducing the localized pressures that would be painful and fill the spaces formed between the foot and the hull to reach the maximum holding of the foot mentioned above.
  • a comfort liner to thermally isolate the foot and having both the function of reducing the localized pressures that would be painful and fill the spaces formed between the foot and the hull to reach the maximum holding of the foot mentioned above.
  • this solution proposes a better direct transmission efforts of the leg on the gliding board through the foot, ensuring that there will be no deformation of the sole under the forces sustained at these points of support.
  • this solution also retains the mechanics of the traditional approach in which the foot remains motionless and passively transmits the efforts of the body to the gliding board.
  • a general object of the present invention consists of a sports shoe allowing a finer transmission of the user's efforts to a gliding machine, which thus improves the guidance of a gliding machine with respect to the solutions of the prior art. .
  • a first object of the present invention is a sports shoe for gliding gear which takes into account the foot mechanics to improve the performance of the guidance of the gliding machine.
  • a second object of the present invention consists of a sports shoe whose manufacturing process is adapted to a wide range of implementation, according to the desired behavior of the shoe according to the intended use, in order to refine and customize the behavior of the shoe.
  • the invention is based on a sports shoe similar to a traditional shoe but further comprising a mechanical separation of the structure of the two-piece sports shoe by a connecting means having particular mechanical properties and arranged according to a specific geometry on the structure of the shoe so as to be able to allow slight lateral oscillations of a part of the shoe by relative to the other, around an axis of longitudinal rotation parallel to the gliding machine.
  • the result obtained by this function exerted by this connecting element is a guidance of a gliding machine whose traditional practice is enriched by the addition of a slight shift of the weight exerted by the user on the gliding board by exploiting the natural movement of the foot, which improves the passive traditional transmission of the shoe from the efforts of the user to the gliding machine.
  • a sports shoe not forming part of the invention as well as an embodiment of the invention will be described for a ski boot by way of illustration. The same concept could however be implemented on any sports shoe intended for guiding a gliding board such as a roller skate, ice skate ...
  • FIGS. 1 to 12 illustrate a ski boot comprising a rigid sole 1 comprising the front and rear sidewalks 4, 5 for a connection with the jaws of a ski binding, a rigid rod 2 intended to receive the foot of a skier, made of plastic material as a polyurethane hardness 60 shd for example, and a connecting element or intermediate element 3 elastomer between these two low and high parts 1, 2 of the shoe.
  • the sole 1 is made of rigid material so as to withstand the stresses particularly in the front and rear sidewalks 4, 5. It represents the entire floor surface of the shoe and comprises an upper face provided with a central rib 7 defining two substantially equivalent lateral surfaces extending over almost the entire length of the shoe. This upper surface is slightly inclined, sloping from the lowest central point to its higher lateral end 6 at the rear of the shoe, as illustrated in FIG. figure 3 , and is horizontal towards the front of the shoe as shown in figure 4 .
  • a thin connecting member 3 is housed on the upper surface of the sole 1. It comprises a shape that allows it to fully conform to the shape of the sole 1, with front and rear edges 8, 9 according to the inner shape sidewalks 4, 5, a central opening 10 in which the rib 7 of the sole 1 is housed, and a surface of inclined shape from the center towards the lateral end 11 in its rear part and a horizontal surface to follow the surface of the sole 1 in its front part.
  • These two elements 1, 3 are thus fixed to one another over their entire contact surface by a means of type welding, for example obtained by a double injection of compatible plastic materials, or by any other fastening means such as a bonding.
  • the intermediate element 3 is wider than the sole 1 towards the front of the boot and its end 11 projects laterally from the end 6 of the soleplate in order to receive the front part of the shell 12 of the rod 2 of the shoe.
  • the upper part 2 of the boot is the boot upper, comprising a shell 12 and a collar 13 made of rigid plastic material, fastening members 14 for closing and tightening the upper on the leg of a shoe.
  • skier an upper opening 15 in which is housed a comfort liner 16, and comprises in its lower part a horizontal lower portion 17 of small thickness in a rigid material of polyurethane type of 60 shD for example.
  • This lower part 17 has a shape corresponding to the upper surface of the connecting element 3. In its central part, it has a groove 18 on its lower face 17 towards its rear part, in order to cooperate with the rib 7 of the soleplate. 1 which slightly exceeds the upper surface of the intermediate element 3.
  • the result obtained is a ski boot whose final shape, in particular that of the sole uniting the parts 1, 3 and 17, corresponds to the standards of the ski boots. It presents itself with a continuous wall of equivalent shape to the usual shoes. She is able to receive a shell bottom sole then a classic comfort bootie.
  • the advantage of this three-part construction of the shoe is to define two independent low 1 and high 2 parts of the shoe, with relative mobility in lateral rotation relative to each other, as will be detailed thereafter. This mobility is defined by the properties of the intermediate element 3, mainly by the material used and its thickness.
  • the rest of the shoe is in a usual rigid ski boot material to transmit the efforts of the skier to the gliding board.
  • the intermediate element 3 will preferably be in a deformable material that may be for example a polyurethane foam or any plastic hardness between 25 and 60 shA and will have a small thickness, less than or equal to 4 millimeters.
  • the skilled person will choose these parameters to maintain a good compromise between the overall stiffness of the shoe for a traditional transfer of the efforts of the skier to the gliding board and the possibility of a low lateral oscillation of the shoe adding a complement in this guidance of the gliding board.
  • Such a deformable material allows a new behavior of the shoe during a particular position of the body of the skier following knee flexion and pressure in the tibia, for the purpose of initiating a turn, for example. Indeed, following this flexion of the knees, the foot has a natural tendency to rotate so as to move the weight of the skier laterally to one of the two heads of the first or fifth metatarsal foot in the direction of the turn.
  • the structure of the shoe will thus allow the realization of this natural movement of the foot since the upper 2 of the shoe can pivot laterally slightly relative to the sole 1, thanks to the deformation of the intermediate element 3, a lateral surface will be compressed while the opposite lateral surface located on the other side of the central rib 7, which serves as a pivot axis, will be biased in tension.
  • This deformation of the intermediate element 3 causes for first effect a movement of the foot, according to a natural movement explained above, and the rod 2 relative to the sole 1 and therefore to the gliding board, inducing for second effect a better location of the effort of the body precisely at a side portion corresponding to the region of one of Ste 1 or 5 th metatarsus of the foot.
  • the shoe thus allows by its structure and its new mechanics to improve the transmission of the effort to the ski, taking advantage of the natural mechanics of the foot and the lower leg.
  • the deformable material of the intermediate element 3 reduces the hard point felt on the foot and improves the comfort of the shoe. Then, this pivoting of the upper part 2 of the shoe in return promotes bending of the skier's leg.
  • the shoe is no longer a rigid and passive element but has a behavior in harmony with the body of the skier which amplifies the guiding effect of the skier on his ski. It preserves the advantage of the traditional transmission of the efforts of the skier to the ski by the overall rigidity of its structure while adding a refinement of this transmission thanks to its slight deformation allowing a movement of the type lateral oscillation.
  • the rigidities and properties of the different materials used in the different parts of the shoe can vary over a wide range.
  • the rigid material of the lower 1 and high 2 parts of the shoe may be a plastic material of hardness at least equal to 40 shD, or any other material usually used for ski boots.
  • the deformable material of the intermediate element 3 may be of different types, each of these types participating in the guidance of the ski in a particular manner.
  • a deformable energy-absorbing material such as a polyurethane foam can be used.
  • Such a choice will absorb some of the effort transmitted by the skier and will be better for beginners, for a less precise guidance of the ski, and for a use in relative straight line as the case of a descent in competition.
  • the deformable material may also be an elastic material such as a rubber, allowing a portion of the transmitted energy to be restored.
  • an elastic material such as a rubber
  • a hyper elastic material could be used, to allow a dynamic restitution of the energy for a fast and precise change of direction. Any intermediate elastic material could be used.
  • an elastic material of variable characteristics according to its conditions of use can be implemented. For example, a viscoelastic material may be absorbent in case of low speed and elastic loads for high speed stresses. Its use will therefore allow the shoe to behave differently depending on the behavior of the skier.
  • deformable previously used therefore has a very broad meaning in this invention, integrating in particular all the variants mentioned above. It also includes plastic materials of lower hardness than the stiffer hard material composing the rest of the shoe, less than 60 shD, which will have a deformable character compared to the rest of the shoe. The common point of all these materials is their possibility of deformation relative to the usual conventional shoes, inducing a technical effect of mobility by lateral rotation between the two shoe parts that it separates. These materials will thus be chosen in a manner adapted to the desired use of the shoe, according to the wide choice mentioned above.
  • this same ski boot structure can be exploited with a very rigid non-deformable intermediate element, such as a carbon fiber material or a metal for example, for competitive uses in which the skier no longer seeks a comfortable harmony with his shoe but a very high rigidity for a passive transmission and integral efforts it exercises.
  • a very rigid non-deformable intermediate element such as a carbon fiber material or a metal for example
  • the figure 5 illustrates an option that is also compatible with embodiments of the invention, which allows for a given shoe to adjust the mobility of the upper part 2 at a given point.
  • This solution rests for example on an adjusting screw 19 whose head is accessible under the lower face of the lower part 1 of the boot and whose end is positioned in the thickness between the two lower parts 1 and 2 high of the shoe, in an opening within the intermediate element 3.
  • This end of the screw 19 therefore represents a stop for the upper part 2 which limits its possibility of descent in the event of compression of the intermediate element 3.
  • Such a solution can be implemented anywhere in the shoe, but will be especially advantageous at the areas of pivoting of greater amplitude.
  • the solution allows a lateral pivoting of the upper part 2 of the boot under the effort of the skier, this pivoting having the greatest amplitude in the areas of the shoe receiving the heads of the 1st and 5th. th metatarsal of the foot on which distributes most of the weight of the skier.
  • This weight of the skier oscillates between these two lateral points of support at the front of the foot and the shoe has a structure allowing it to react by following more or less this oscillation movement.
  • the presence of the deformable material of the intermediate element 3 at the heel in the first embodiment therefore has for main function the comfort of the foot on this point of support at the heel.
  • Figures 6 to 12 illustrate variants in which the lower part 1 'of the shoe consists of a sole part comprising a front sidewalk 4' and not extending to the rear sidewalk of the shoe which belongs to the upper part 2 'of the shoe .
  • a rigid rod 20 is used to strengthen the attachment of the sole 1 '.
  • the rod 20 is inserted longitudinally through an opening in the rear sidewalk of the shoe and extends to the front of the shoe, positioning itself in an opening provided in the rib 7 'of the lower sole 1' .
  • a binding between the lower 1 'and high 2' parts of the shoe is directly made, which reinforces the fixing by the gluing between the sole 1 'and the interface piece 3' and between the intermediate piece 3 ' and the lower zone 17 'of the upper part 2'.
  • a first sub-variant in relation to Figures 1 to 12 may consist of the removal of the ribs 7, 7 ', the intermediate element then extending over the entire surface of the sole of the shoe to fully separate the lower 1 and high 2 of the shoe.
  • this intermediate element will be provided with an additional function of damping vertical shocks exerted on the shoe, while retaining the possibility of lateral rotation, one side being compressible and the other stretched in tension in the case of a transmission of a force laterally offset by the weight of the skier.
  • a second opposite sub-variant may consist of a wider central rib, however not extending to the two front support points on the skier's foot to allow the implementation of the lateral pivot around this rib.
  • the rib can be made differently, by means of substantially aligned pins, or even two points of support front and rear. Alternatively, the rib can be obtained by a number of substantially aligned screws.
  • the rib may be asymmetrical, offset from the longitudinal axis of symmetry of the shoe, or inclined.
  • the shoe can be obtained by the superposition of physically distinct elements.
  • the shoe can be obtained by methods combining several injections of plastic materials.
  • the rod 2 and the sole 1 could be formed during the same injection step, the two shoe parts 1, 2 thus forming a single continuous physical body and being connected at the rib 7 , 7 ', the intermediate element 3, 3' being added thereafter.
  • the different superposed elements are not fixed to each other over their entire contact surface.
  • they will be fixed on at least a portion of the peripheral zone of the shoe, to prevent their spacing and the entry of dust between the layers of the shoe.
  • Their fixing is done by different means, firstly a first means for fixing the lower part 1 to the connecting element 3 and secondly a second means for fixing the connecting element 3 to the upper part of 2.
  • the connecting element will work in traction on one side and in compression on the other side during lateral rotations of the upper part. 2 relative to the lower part 1.
  • These fixing means can be mechanical means, collages, welds ...
  • the concept can be simply implemented on existing shoes with removable front and rear heelettes.
  • an intermediate element of small thickness can be positioned between the removable heel and the shoe, the assembly being held in position by screws connecting the heel and the rest of the shoe, these screws being positioned at the central portion. of the heel piece to define a connection equivalent to the preceding rib 7, 7 'and to allow the lateral oscillation function of the boot relative to the removable heel pieces.
  • the concept of the invention consists of the separation of the shoe into two parts, a so-called “low” part linked to the gliding board and a so-called “high” part linked to the skier's leg and having a lateral mobility with respect to this lower part considered as fixed, through a connecting zone which consists of a part of the shoe with special mechanical properties.
  • a ski boot is illustrated in which the front portion of the boot can pivot around the support plate 21 of the sole of the boot.
  • an intermediate element 23 is made in the form of two narrow strips of deformable material forming two inverted side U, which extend on the outer surface of the sole of the shoe.
  • These two inverted U-shaped strips consist on the one hand of parallel and transverse strips 26, distributed on either side of the support plate 21 on the lower horizontal surface of the sole of the boot, and on the other hand strips 28 which then go up on the substantially vertical side wall of the sole of the shoe and which meet to form the top of the inverted U.
  • the horizontal parallel strips 26 of the two inverted U-shaped portions of the intermediate element 23 do not meet under the sole but leave a central portion 27 uncut, which plays a role substantially equivalent to that of the rib 7 described above.
  • the movement of the weight of the skier during an initiation of a curve induces an overpressure on a lateral part of the shoe.
  • the U-band undergoing this overpressure will compress at its portion 28 in the vertical plane while the horizontal portion 26 will be stressed in shear.
  • this inverted U-shaped band will allow the upper part of the boot to pivot laterally, the support plate 21 of the sole of the shoe remaining stationary bearing on the gliding board.
  • the rear part of the shoe illustrates another possible implementation of the solution in which the lower part 21 'of the boot fixed on the gliding board comprises a rear part of the sole including the rear sidewalk 25.
  • the intermediate element 23' separates this lower part 21 'of the remainder of the shoe by a band of deformable material which divides the wall in two extending along the wall of the shoe from a point 29 at the level of the sole, bypassing the sidewalk 25 in a point 30 positioned in the wall of the upper of the shoe above this sidewalk and then down symmetrically on the other side of the shoe.
  • This band is interrupted in the central part 27 ', around which the upper part 22 of the boot can pivot relative to the lower rear part 21' thanks to the deformable band 23 ', working in compression on one side and in tension the other.
  • This central part has a function similar to that of rib 7 of the first embodiment.
  • This band 23 ' also extends on the horizontal wall of the sole in a band similar to one of the strips 26 of the front part. Such a band is not shown because masked by a rear heel 31 of the shoe that covers it.
  • the intermediate band may be in a deformable material as explained above or be on the contrary in a very rigid material, depending on the desired behavior of the shoe. It is through to completely cut the wall of the shoe into two parts distinct. Its width or thickness, measured from the interface of the portion 21 towards the interface of the portion 22 in a direction perpendicular to the intermediate band 23 disposed between these interfaces, remains less than 4 millimeters.
  • the lower part of the shoe consists of the meeting of the front support plate 21 and the rear portion 21 'whereas the upper part 22 of the shoe consists of all the rest, including also for example the front sidewalk and the central portion 37 of the sole.
  • This realization illustrates that the concept of "high part” and "low part” must be understood in a very broad sense, since the upper part will tend to follow the movement of the leg of the skier and will thus be equipped with a lateral mobility with respect to the lower part, linked to the gliding board and substantially immobile on this gliding board.
  • the lower front part 21 may comprise the front sidewalk 24 for example, similarly to the solution proposed in the rear part in the embodiment described with respect to the Figures 13 to 16 .
  • the rear portion does not necessarily contain an intermediate element 23 'as has been explained before, the lateral pulses of the weight of the skier being distributed mainly in the front part of the shoe.
  • the lower rear portion 21 ' may also consist of a support plate of the sole of the shoe.
  • the embodiment can consist of an implementation very close to the shoe according to the Figures 1 to 12 as shown on the variants corresponding to the Figures 17 to 20 .
  • the first variant illustrated on the figure 17 and 18 consists of a solution in which the lower part 31 consists of the sole of the shoe and is separated from the rod 32 by a narrow connecting strip 33 which cuts the wall of the shoe over its entire periphery.
  • This solution differs mainly from that illustrated in Figures 1 and 4 in that the rod 32 does not contain a lower part 17 and in that the connecting element does not extend on a horizontal surface but is simply a through-band in the wall of the boot.
  • the second variant illustrated on the Figures 19 and 20 is the same as previously in which the connecting strip 33 'which separates the lower 31' and high 32 'parts does not extend over the entire periphery of the shoe but only in an anterior area.
  • the invention also relates to the method of manufacturing such a shoe, which may comprise, according to a variant embodiment, two plastic material injection steps, in order to form the intermediate element on the one hand and the rest of the shoe on the other hand.
  • this manufacturing process may comprise more than two injection steps.
  • the upper of the boot can be bi-injected according to a usual method whereas an additional injection step makes it possible to form the intermediate element.
  • a softer and deformable material would be used for the intermediate element, it can be advantage to use to form the flaps of the shell of the shoe in the same material during the same injection step.
  • the shoe obtained retains a shape generally identical to the shoes of the prior art, its structure being however different since incorporating an intermediate element in a material different from the majority of the shoe, which serves to separate the shoe in two parts mechanically relatively independent.
  • this separation of the shoe does not mean a real physical separation of distinct parts: indeed, in the embodiment, it is clear that the high and low parts form a continuous set because linked for example by parts 27, 27 '. This ensures a rigidity and necessary strength of the shoe, while allowing a mechanical mobility of one part of this set relative to the other.

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  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Description

La présente invention concerne une chaussure de sport à coque rigide pour engin de glisse, comme le ski ou le patin, comprenant une structure particulièrement adaptée à la transmission des efforts de l'utilisateur à l'engin de glisse pour son guidage efficace. Elle porte aussi sur un procédé de fabrication d'une telle chaussure.The present invention relates to a rigid-shell sports shoe for gliding apparatus, such as ski or skate, comprising a structure particularly adapted to the transmission of the user's efforts to the gliding machine for its effective guidance. It also relates to a method of manufacturing such a shoe.

Comme il est connu de l'art antérieur, une chaussure de sport pour engin de glisse sert d'interface entre le corps et l'engin de glisse, cette interface étant chargée de diriger les forces dans des directions favorables afin de répercuter rapidement la tension musculaire du sportif à l'engin de glisse de manière efficace pour réagir aux modifications de situations qui se présentent lors d'une descente.As is known from the prior art, a sports shoe for gliding gear serves as an interface between the body and the gliding device, this interface being responsible for directing the forces in favorable directions in order to pass on the tension quickly. athlete's muscle to the gliding device effectively to react to changes in situations that occur during a descent.

La quasi-totalité des chaussures de ski existantes ont pour principe la tenue maximale du pied et de la cheville du skieur, le guidage du ski se faisant par une flexion sur les genoux et la position de l'ensemble du torse pour modifier le centre de gravité du skieur, le pied et la cheville restant immobiles sur la planche de glisse afin d'induire une transmission passive des efforts du corps à la planche de glisse par la chaussure rigide.Almost all existing ski boots have as their principle the maximum hold of the skier's foot and ankle, the guiding of the ski being done by a flexion on the knees and the position of the whole torso to modify the center of the skier. severity of the skier, the foot and ankle remaining stationary on the gliding board to induce a passive transmission of the body's efforts to the gliding board by the rigid shoe.

Dans cette optique, les chaussures de ski sont basées sur une tige rigide remontant jusqu'au tibia, équipée d'un chausson de confort pour isoler thermiquement le pied et ayant à la fois pour fonction de réduire les pressions localisées qui seraient douloureuses et de remplir les espaces formés entre le pied et la coque pour atteindre la tenue maximale du pied mentionnée précédemment. Pour améliorer encore ces solutions, on a proposé de réaliser des chaussons in-situ par injection d'une mousse destinée à remplir le mieux possible les espaces entre le pied et la coque, de manière à se rapprocher le plus possible d'une chaussure épousant parfaitement la morphologie individuelle du pied.In this context, the ski boots are based on a rigid stem up to the shin, equipped with a comfort liner to thermally isolate the foot and having both the function of reducing the localized pressures that would be painful and fill the spaces formed between the foot and the hull to reach the maximum holding of the foot mentioned above. To further improve these solutions, it has been proposed to make slippers in-situ by injection of a foam intended to fill as best as possible the spaces between the foot and the shell, so as to get as close as possible to a shoe perfectly matching the individual morphology of the foot.

Pour augmenter toutefois le confort de ces chaussures, des solutions sont proposées dans les documents EP0432793 et US5214865 qui permettent un amortissement des chocs verticaux et horizontaux, en intégrant une partie élastique dans la structure de la semelle de la chaussure. Toutefois, ces solutions conservent la même approche concernant la fonction de guidage de la planche de glisse.However, to increase the comfort of these shoes, solutions are proposed in the documents EP0432793 and US5214865 which allow a damping of the vertical and horizontal shocks, by integrating an elastic part in the structure of the sole of the shoe. However, these solutions retain the same approach regarding the guiding function of the gliding board.

La solution proposée dans le document CH688636 privilégie contrairement aux deux précédentes la transmission maximale des efforts du skieur en supprimant tout amortissement. Pour cela, elle tient compte de la structure du pied et propose l'ajout d'éléments rigides précisément disposés au niveau des trois points d'appui du pied, c'est à dire le talon, plus précisément la tubérosité postérieure du calcanéum, la tête du premier métatarse et la tête du cinquième métatarse. Comme il est connu qu'en position normale de repos le poids du corps se répartit à raison d'environ 50% sur le talon, 30% sur le premier métatarse et 20% sur le cinquième métatarse, cette solution propose ainsi une meilleure transmission directe des efforts de la jambe sur la planche de glisse à travers le pied, garantissant qu'il n'y aura pas de déformation de la semelle sous les forces subies en ces points d'appui. Toutefois, cette solution conserve aussi la mécanique de l'approche traditionnelle dans laquelle le pied reste immobile et transmet passivement les efforts du corps à la planche de glisse.The solution proposed in the document CH688636 unlike the previous two, it favors the maximum transmission of the skier's efforts by eliminating any damping. For this, it takes into account the structure of the foot and proposes the addition of rigid elements precisely arranged at the three points of support of the foot, ie the heel, more precisely the posterior tuberosity of the calcaneus, the head of the first metatarsal and the head of the fifth metatarsal. As it is known that in the normal position of rest the weight of the body is distributed about 50% on the heel, 30% on the first metatarsal and 20% on the fifth metatarsal, this solution proposes a better direct transmission efforts of the leg on the gliding board through the foot, ensuring that there will be no deformation of the sole under the forces sustained at these points of support. However, this solution also retains the mechanics of the traditional approach in which the foot remains motionless and passively transmits the efforts of the body to the gliding board.

Finalement, les inconvénients de cette approche traditionnelle de guidage d'un engin de glisse par les chaussures traditionnelles sont les suivants:

  • la mécanique naturelle du pied n'est pas exploitée puisque l'objectif est son maintien immobile sur l'engin de glisse et le pied n'a donc aucune fonction directe de guidage de l'engin de glisse, la chaussure se contentant de transmettre les efforts musculaires principalement réalisés au niveau de la jambe de l'utilisateur. Par conséquent, l'efficacité de la chaussure n'est finalement pas optimale pour le guidage d'un engin de glisse ;
  • ces solutions sont souvent douloureuses pour le pied et donc non confortables puisque les efforts du corps s'appliquent intégralement sur les trois points d'appui de la voûte plantaire.
Finally, the drawbacks of this traditional approach of guiding a gliding apparatus by traditional shoes are the following:
  • the natural mechanics of the foot is not exploited since the objective is its immobile support on the gliding machine and the foot therefore has no direct function of guiding the gliding machine, the shoe merely transmitting the muscular efforts mainly performed at the level of the user's leg. Therefore, the effectiveness of the shoe is ultimately not optimal for guiding a gliding machine;
  • these solutions are often painful for the foot and therefore not comfortable since the efforts of the body apply integrally on the three points of support of the arch.

En marge de l'approche traditionnelle décrite précédemment, il convient de noter une première solution décrite dans le document FR2415977 , qui repose sur un pivotement possible du pied au sein de la chaussure autour d'un axe longitudinal partant du talon et partageant le pied sensiblement en deux moitiés. Cette fonction de pivotement est mise en oeuvre par une pièce rapportée dans la chaussure comprenant deux points d'appui au niveau du talon et de l'avant du pied, définissant un axe de pivotement autour duquel elle peut pivoter par rapport au reste de la chaussure et par rapport à l'engin de glisse. L'optique de cette solution originale est de permettre un guidage d'un engin de glisse par le seul mouvement du pied, qui suffit pour entraîner un déplacement du poids exercé sur l'engin de glisse. Les inconvénients de cette solution sont toutefois les suivants :

  • la partie pivotante ajoutée ne correspond pas spécifiquement à la structure du pied explicitée plus haut concernant les trois points d'appui du pied et n'exploite donc pas la mécanique naturelle du pied. Ainsi, cette solution n'est pas satisfaisante au niveau du confort du pied et entraîne une performance non optimisée ;
  • la partie pivotante se déplace de manière très libre par rapport à la chaussure et le ski et a globalement peu de contact avec ces derniers.
In addition to the traditional approach described above, it is worth noting a first solution described in the document FR2415977 , which is based on a possible pivoting of the foot within the shoe about a longitudinal axis from the heel and dividing the foot substantially into two halves. This pivoting function is implemented by an insert in the shoe comprising two support points at the heel and forefoot, defining a pivot axis around which it can pivot relative to the rest of the shoe and compared to the gliding machine. The optics of this original solution is to allow guidance of a gliding device by the sole movement of the foot, which is sufficient to cause a shift in weight exerted on the gliding machine. The disadvantages of this solution, however, are as follows:
  • the added pivoting part does not correspond specifically to the structure of the foot explained above concerning the three points of support of the foot and therefore does not exploit the natural mechanics of the foot. Thus, this solution is not satisfactory in terms of foot comfort and results in a non-optimized performance;
  • the pivoting part moves very freely with respect to the shoe and the ski and overall has little contact with them.

Cela entraîne une grande liberté du pied relativement à la chaussure, qui apporte un gain au niveau du guidage du ski par le pied mais qui se fait au détriment ou en remplacement du guidage par le mouvement habituel du reste du corps dont le nouvel équilibre sur le ski devient très instable. Par exemple, une flexion habituelle des genoux entraînant un effort de la jambe sur le collier de la chaussure n'a plus d'effet direct sur le guidage de l'engin de glisse car cet effort n'est plus transmis par la chaussure à l'engin de glisse, la partie pivotante indépendante au niveau du pied représentant une coupure dans la chaîne de transmission de cet effort de la jambe vers l'engin de glisse. La performance globale d'une telle chaussure est finalement très insatisfaisante.This results in great freedom of the foot relative to the shoe, which brings a gain in the guiding of the ski by the foot but is done to the detriment or replacement of the guide by the usual movement of the rest of the body whose new balance on the skiing becomes very unstable. For example, a customary bending of the knees causing a force of the leg on the collar of the shoe no longer has a direct effect on the guidance of the gliding device because this effort is no longer transmitted by the shoe to the shoe. gliding apparatus, the independent pivoting portion at the level of the foot representing a cut in the chain of transmission of this force from the leg to the gliding apparatus. The overall performance of such a shoe is ultimately very unsatisfactory.

Une autre solution originale est décrite dans le document W08102508 qui propose une chaussure composée de deux parties distinctes, une semelle liée au ski d'une part et une tige de chaussure comprenant sa propre semelle d'autre part, ces deux éléments étant reliés par un élément de connexion sur une petite surface longitudinale qui permet le pivotement de la partie supérieure de la chaussure par rapport à la semelle liée au ski. Cette solution a le même objectif que la solution précédente. Elle présente toutefois les inconvénients suivants :

  • la chaussure finale est complexe, ce qui la rend fragile et coûteuse;
  • elle est inadaptée à la marche ;
  • la neige ou tout autre élément peut se loger entre les deux parties de chaussure qui sont détachées l'une de l'autre sur une grande surface, notamment quand leurs surfaces s'écartent dans les courbes ;
  • elle induit des mouvements de pivotement trop importants et le gain au niveau du guidage du ski par le pied se fait au détriment ou en remplacement du guidage par le mouvement habituel du reste du corps dont le nouvel équilibre sur le ski devient très instable
Another original solution is described in the document W08102508 which proposes a shoe composed of two distinct parts, a sole linked to the ski on the one hand and a shoe upper with its own sole on the other hand, these two elements being connected by a connecting element on a small longitudinal surface which allows the pivoting of the upper part of the boot relative to the sole linked to the ski. This solution has the same objective as the previous solution. However, it has the following drawbacks:
  • the final shoe is complex, which makes it fragile and expensive;
  • she is unsuitable for walking;
  • the snow or other element can be housed between the two shoe parts which are detached from one another over a large area, especially when their surfaces deviate in the curves;
  • it induces excessive pivoting movements and the gain in the guiding of the ski by the foot is at the expense or replacement of the guide by the usual movement of the rest of the body whose new balance on the ski becomes very unstable

Enfin, le document US2005/172518 décrit une approche semblable aux deux précédentes et comprend le même type d'inconvénients. Ces dernières approches originales proposent toutes des solutions basées sur des chaussures qui s'éloignent des formes habituelles des chaussures de ski et qui impliquent un guidage du ski qui n'est plus possible par le mouvement habituel du corps du skieur.Finally, the document US2005 / 172518 describes an approach similar to the two previous ones and includes the same type of disadvantages. These last original approaches all propose solutions based on shoes that move away from the usual forms of ski boots and which imply a guidance of the ski which is no longer possible by the usual movement of the body of the skier.

Le document US 2002/0089150 décrit une chaussure de sport fragmentée par une bande élastique.The document US 2002/0089150 describes a sports shoe fragmented by an elastic band.

Un objet général de la présente invention consiste en une chaussure de sport permettant une transmission plus fine des efforts de l'utilisateur à un engin de glisse, qui améliore ainsi le guidage d'un engin de glisse par rapport aux solutions de l'art antérieur.A general object of the present invention consists of a sports shoe allowing a finer transmission of the user's efforts to a gliding machine, which thus improves the guidance of a gliding machine with respect to the solutions of the prior art. .

Plus précisément, un premier objet de la présente invention consiste en une chaussure de sport pour engin de glisse qui prend en compte la mécanique du pied pour améliorer la performance du guidage de l'engin de glisse.More specifically, a first object of the present invention is a sports shoe for gliding gear which takes into account the foot mechanics to improve the performance of the guidance of the gliding machine.

Un second objet de la présente invention consiste en une chaussure de sport dont le procédé de fabrication est adapté à une large plage de mise en oeuvre, selon le comportement souhaité de la chaussure en fonction de l'utilisation prévue, afin d'affiner et personnaliser le comportement de la chaussure.A second object of the present invention consists of a sports shoe whose manufacturing process is adapted to a wide range of implementation, according to the desired behavior of the shoe according to the intended use, in order to refine and customize the behavior of the shoe.

L'invention repose sur une chaussure de sport proche d'une chaussure traditionnelle mais comprenant de plus une séparation mécanique de la structure de la chaussure de sport en deux parties par un moyen de liaison doté de propriétés mécaniques particulières et disposé selon une géométrie spécifique sur la structure de la chaussure afin d'être apte à autoriser des faibles oscillations latérales d'une partie de la chaussure par rapport à l'autre, autour d'un axe de rotation longitudinal parallèle à l'engin de glisse. Le résultat obtenu par cette fonction exercée par cet élément de liaison est un guidage d'un engin de glisse dont la pratique traditionnelle est enrichie par l'addition d'un léger décalage du poids exercé par l'utilisateur sur la planche de glisse en exploitant le mouvement naturel du pied, qui améliore la transmission traditionnelle passive de la chaussure des efforts de l'utilisateur vers l'engin de glisse.The invention is based on a sports shoe similar to a traditional shoe but further comprising a mechanical separation of the structure of the two-piece sports shoe by a connecting means having particular mechanical properties and arranged according to a specific geometry on the structure of the shoe so as to be able to allow slight lateral oscillations of a part of the shoe by relative to the other, around an axis of longitudinal rotation parallel to the gliding machine. The result obtained by this function exerted by this connecting element is a guidance of a gliding machine whose traditional practice is enriched by the addition of a slight shift of the weight exerted by the user on the gliding board by exploiting the natural movement of the foot, which improves the passive traditional transmission of the shoe from the efforts of the user to the gliding machine.

L'invention est plus précisément définie par les revendications.The invention is more precisely defined by the claims.

Ces objets, caractéristiques et avantages de la présente invention seront exposés en détail dans la description suivante de modes d'exécution particuliers faits à titre non-limitatif en relation avec les figures jointes parmi lesquelles :

  • La figure 1 représente une vue en perspective éclatée d'une chaussure de sport ne faisant pas partie de l'invention ;
  • la figure 2 est une vue de côté d'une chaussure;
  • la figure 3 est une vue en coupe III-III de cette chaussure;
  • la figure 4 est une vue est une vue en coupe IV-IV de cette chaussure;
  • la figure 5 représente un détail d'une optionde cette chaussure;
  • la figure 6 représente une vue en perspective éclatée d'une chaussure de sport selon une première variante de cette chaussure;
  • la figure 7 est une vue en perspective arrière de la chaussure selon la première variante;
  • la figure 8 est une vue en coupe transversale de l'avant de la chaussure selon la première variante;
  • la figure 9 représente une vue en perspective éclatée d'une chaussure de sport selon une seconde variante;
  • la figure 10 est une vue de côté de la chaussure selon la seconde variante;
  • la figure 11 est une vue en coupe XI-XI de cette chaussure;
  • la figure 12 est une vue est une vue en coupe XII-XII de cette chaussure;
  • les figures 13 et 14 sont des vues des deux côtés d'une chaussure de sport selon un mode d'exécution de l'invention ;
  • la figure 15 est une vue en perspective de dessous de la chaussure de sport selon le mode d'exécution de l'invention ;
  • la figure 16 est une vue arrière de la chaussure de sport selon le mode d'exécution de l'invention.
  • la figure 17 est une vue de côté de la chaussure selon une variante du mode d'exécution de l'invention ;
  • la figure 18 est une vue est une vue en coupe XVIII-XVIII de la chaussure selon la variante précédente ;
  • la figure 19 est une vue de côté de la chaussure selon une seconde variante du mode d'exécution de l'invention ;
  • la figure 20 est une vue est une vue en coupe XX-XX de la chaussure selon la variante précédente.
These objects, features and advantages of the present invention will be set forth in detail in the following description of particular embodiments given in a non-limiting manner in relation to the appended figures among which:
  • The figure 1 represents an exploded perspective view of a sports shoe not forming part of the invention;
  • the figure 2 is a side view of a shoe;
  • the figure 3 is a sectional view III-III of this shoe;
  • the figure 4 is a view is an IV-IV sectional view of this shoe;
  • the figure 5 represents a detail of an option of this shoe;
  • the figure 6 represents an exploded perspective view of a sports shoe according to a first variant of this shoe;
  • the figure 7 is a rear perspective view of the shoe according to the first variant;
  • the figure 8 is a cross-sectional view of the front of the shoe according to the first variant;
  • the figure 9 represents an exploded perspective view of a sports shoe according to a second variant;
  • the figure 10 is a side view of the shoe according to the second variant;
  • the figure 11 is a XI-XI sectional view of this shoe;
  • the figure 12 is a view is a XII-XII sectional view of this shoe;
  • the Figures 13 and 14 are views on both sides of a sports shoe according to an embodiment of the invention;
  • the figure 15 is a perspective view from below of the sports shoe according to the embodiment of the invention;
  • the figure 16 is a rear view of the sports shoe according to the embodiment of the invention.
  • the figure 17 is a side view of the shoe according to a variant of the embodiment of the invention;
  • the figure 18 is a view is a sectional view XVIII-XVIII of the shoe according to the previous variant;
  • the figure 19 is a side view of the shoe according to a second variant of the embodiment of the invention;
  • the figure 20 is a view is a XX-XX sectional view of the shoe according to the previous variant.

Une chaussure de sport ne faisant pas partie de l'invention ainsi qu'un mode d'exécution de l'invention vont être décrits pour une chaussure de ski à titre d'illustration. Le même concept pourrait toutefois être implémenté sur toute chaussure de sport destinée au guidage d'une planche de glisse comme un patin à roulettes, à glace...A sports shoe not forming part of the invention as well as an embodiment of the invention will be described for a ski boot by way of illustration. The same concept could however be implemented on any sports shoe intended for guiding a gliding board such as a roller skate, ice skate ...

Les figures 1 à 12, illustrent une chaussure de ski comprenant une semelle 1 rigide comprenant les trottoirs avant et arrière 4, 5 pour une liaison avec les mâchoires d'une fixation de ski, une tige 2 rigide destinée à recevoir le pied d'un skieur, en matériau plastique comme un polyuréthane de dureté 60 shd par exemple, et un élément de liaison ou élément intermédiaire 3 en élastomère entre ces deux parties basses et hautes 1, 2 de la chaussure.The Figures 1 to 12 , illustrate a ski boot comprising a rigid sole 1 comprising the front and rear sidewalks 4, 5 for a connection with the jaws of a ski binding, a rigid rod 2 intended to receive the foot of a skier, made of plastic material as a polyurethane hardness 60 shd for example, and a connecting element or intermediate element 3 elastomer between these two low and high parts 1, 2 of the shoe.

La semelle 1 est en matériau rigide de manière à résister aux efforts subis notamment au niveau des trottoirs avant et arrière 4, 5. Elle représente toute la surface au sol de la chaussure et comprend une face supérieure munie d'une nervure centrale 7 délimitant deux surfaces latérales sensiblement équivalentes s'étendant sur quasiment toute la longueur de la chaussure. Cette surface supérieure est légèrement inclinée, en pente du point central le plus bas vers son extrémité latérale 6 plus haute au niveau de l'arrière de la chaussure, comme cela est illustré sur la figure 3, et est horizontale vers la partie antérieure de la chaussure comme cela est représenté à la figure 4.The sole 1 is made of rigid material so as to withstand the stresses particularly in the front and rear sidewalks 4, 5. It represents the entire floor surface of the shoe and comprises an upper face provided with a central rib 7 defining two substantially equivalent lateral surfaces extending over almost the entire length of the shoe. This upper surface is slightly inclined, sloping from the lowest central point to its higher lateral end 6 at the rear of the shoe, as illustrated in FIG. figure 3 , and is horizontal towards the front of the shoe as shown in figure 4 .

Un élément de liaison 3 de faible épaisseur vient se loger sur la surface supérieure de la semelle 1. Il comprend une forme lui permettant d'épouser totalement la forme de la semelle 1, avec des rebords avant et arrière 8, 9 suivant la forme intérieure des trottoirs 4, 5, une ouverture centrale 10 dans laquelle se loge la nervure 7 de la semelle 1, et une surface de forme inclinée du centre vers l'extrémité latérale 11 dans sa partie arrière et une surface horizontale pour suivre la surface de la semelle 1 dans sa partie antérieure. Ces deux éléments 1, 3 sont ainsi fixés l'un à l'autre sur toute leur surface de contact par un moyen de type soudure, par exemple obtenue par une double injection de matériaux plastiques compatibles, ou par tout autre moyen de fixation comme un collage. Comme cela est représenté sur la figure 4, l'élément intermédiaire 3 est plus large que la semelle 1 vers l'avant de la chaussure et son extrémité 11 déborde latéralement de l'extrémité 6 de la semelle afin de recevoir la partie antérieure de la coque 12 de la tige 2 de la chaussure.A thin connecting member 3 is housed on the upper surface of the sole 1. It comprises a shape that allows it to fully conform to the shape of the sole 1, with front and rear edges 8, 9 according to the inner shape sidewalks 4, 5, a central opening 10 in which the rib 7 of the sole 1 is housed, and a surface of inclined shape from the center towards the lateral end 11 in its rear part and a horizontal surface to follow the surface of the sole 1 in its front part. These two elements 1, 3 are thus fixed to one another over their entire contact surface by a means of type welding, for example obtained by a double injection of compatible plastic materials, or by any other fastening means such as a bonding. As shown on the figure 4 , the intermediate element 3 is wider than the sole 1 towards the front of the boot and its end 11 projects laterally from the end 6 of the soleplate in order to receive the front part of the shell 12 of the rod 2 of the shoe.

Enfin, la partie haute 2 de la chaussure est la tige de chaussure, comprenant une coque 12 et un collier 13 en matériau plastique rigide, des organes d'accrochage 14 pour assurer la fermeture et le serrage de la tige sur la jambe d'un skieur, une ouverture supérieure 15 dans laquelle se loge un chausson de confort 16, et comprend dans sa partie inférieure une partie inférieure horizontale 17 de faible épaisseur dans un matériau rigide de type polyuréthane de 60 shD par exemple. Cette partie inférieure 17 a une forme correspondant à la surface supérieure de l'élément de liaison 3. Dans sa partie centrale, elle possède une rainure 18 sur sa face inférieure 17 vers sa partie arrière, afin de coopérer avec la nervure 7 de la semelle 1 qui dépasse légèrement de la surface supérieure de l'élément intermédiaire 3. Cela permet de faciliter le positionnement de la tige 2 et d'améliorer la fixation des trois éléments 1, 2, 3 entre eux pour obtenir la chaussure finale. Toute la surface de la partie inférieure 17 de la tige 2 est fixée sur l'élément intermédiaire 3 et sur la nervure centrale 7 de la semelle 1. Tout moyen de fixation pourra être utilisé, comme un collage, une surinjection de la tige sur la semelle provisoire composée des deux éléments inférieurs 1, 3.Finally, the upper part 2 of the boot is the boot upper, comprising a shell 12 and a collar 13 made of rigid plastic material, fastening members 14 for closing and tightening the upper on the leg of a shoe. skier, an upper opening 15 in which is housed a comfort liner 16, and comprises in its lower part a horizontal lower portion 17 of small thickness in a rigid material of polyurethane type of 60 shD for example. This lower part 17 has a shape corresponding to the upper surface of the connecting element 3. In its central part, it has a groove 18 on its lower face 17 towards its rear part, in order to cooperate with the rib 7 of the soleplate. 1 which slightly exceeds the upper surface of the intermediate element 3. This facilitates the positioning of the rod 2 and improve the attachment of the three elements 1, 2, 3 between them to obtain the final shoe. The entire surface of the lower portion 17 of the rod 2 is fixed on the intermediate element 3 and on the central rib 7 of the sole 1. Any fastening means may be used, such as a bonding, an overinjection of the rod on the temporary sole consisting of the two lower elements 1, 3.

Le résultat obtenu est une chaussure de ski dont la forme finale, notamment celle de la semelle réunissant les parties 1, 3 et 17, correspond aux normes des chaussures de ski. Elle se présente avec une paroi continue de forme équivalente aux chaussures habituelles. Elle est apte à recevoir une semelle de fond de coque puis un chausson de confort classiques. L'avantage de cette construction en trois parties de la chaussure est de définir deux parties indépendantes basse 1 et haute 2 de la chaussure, dotées d'une mobilité relative en rotation latérale l'une par rapport à l'autre, comme cela sera détaillé par la suite. Cette mobilité est définie par les propriétés de l'élément intermédiaire 3, principalement par le matériau utilisé et son épaisseur. Le reste de la chaussure est dans un matériau rigide habituel de chaussure de ski pour transmettre les efforts du skieur jusqu'à la planche de glisse.The result obtained is a ski boot whose final shape, in particular that of the sole uniting the parts 1, 3 and 17, corresponds to the standards of the ski boots. It presents itself with a continuous wall of equivalent shape to the usual shoes. She is able to receive a shell bottom sole then a classic comfort bootie. The advantage of this three-part construction of the shoe is to define two independent low 1 and high 2 parts of the shoe, with relative mobility in lateral rotation relative to each other, as will be detailed thereafter. This mobility is defined by the properties of the intermediate element 3, mainly by the material used and its thickness. The rest of the shoe is in a usual rigid ski boot material to transmit the efforts of the skier to the gliding board.

L'élément intermédiaire 3 sera de préférence dans un matériau déformable pouvant être par exemple une mousse de polyuréthane ou tout plastique de dureté entre 25 et 60 shA et aura une faible épaisseur, inférieure ou égale à 4 millimètres. L'homme du métier choisira ces paramètres afin de conserver un bon compromis entre la rigidité d'ensemble de la chaussure pour un transfert traditionnel des efforts du skieur vers la planche de glisse et la possibilité d'une faible oscillation latérale de la chaussure ajoutant un complément dans ce guidage de la planche de glisse.The intermediate element 3 will preferably be in a deformable material that may be for example a polyurethane foam or any plastic hardness between 25 and 60 shA and will have a small thickness, less than or equal to 4 millimeters. The skilled person will choose these parameters to maintain a good compromise between the overall stiffness of the shoe for a traditional transfer of the efforts of the skier to the gliding board and the possibility of a low lateral oscillation of the shoe adding a complement in this guidance of the gliding board.

Un tel matériau déformable permet un comportement nouveau de la chaussure lors d'une position particulière du corps du skieur suite à une flexion des genoux et une pression au niveau du tibia, dans le but d'initier un virage par exemple. En effet, suite à cette flexion des genoux, le pied a une tendance naturelle à pivoter de sorte de déplacer le poids du skieur latéralement vers une des deux têtes du premier ou cinquième métatarse du pied selon le sens du virage. La structure de la chaussure va ainsi permettre la réalisation de ce mouvement naturel du pied puisque la tige 2 de la chaussure peut pivoter latéralement légèrement par rapport à la semelle 1, grâce à la déformation de l'élément intermédiaire 3 dont une surface latérale sera comprimée alors que la surface latérale opposée située de l'autre côté de la nervure centrale 7, qui sert d'axe de pivotement, sera sollicitée en traction. Cette déformation de l'élément intermédiaire 3 entraîne pour premier effet un déplacement du pied, selon un mouvement naturel explicité précédemment, et de la tige 2 relativement à la semelle 1 et donc à la planche de glisse, induisant pour second effet une meilleure localisation de l'effort du corps précisément sur une partie latérale correspondant à la zone d'un des 1 iers ou 5ième métatarse du pied. La chaussure permet ainsi par sa structure et sa nouvelle mécanique d'améliorer la transmission de l'effort au ski, en tirant profit de la mécanique naturelle du pied et du bas de jambe. Comme effet supplémentaire avantageux, le matériau déformable de l'élément intermédiaire 3 permet d'atténuer le point dur ressenti sur le pied et améliore le confort de la chaussure. Ensuite, ce pivotement de partie haute 2 de la chaussure favorise en retour la flexion de la jambe du skieur.Such a deformable material allows a new behavior of the shoe during a particular position of the body of the skier following knee flexion and pressure in the tibia, for the purpose of initiating a turn, for example. Indeed, following this flexion of the knees, the foot has a natural tendency to rotate so as to move the weight of the skier laterally to one of the two heads of the first or fifth metatarsal foot in the direction of the turn. The structure of the shoe will thus allow the realization of this natural movement of the foot since the upper 2 of the shoe can pivot laterally slightly relative to the sole 1, thanks to the deformation of the intermediate element 3, a lateral surface will be compressed while the opposite lateral surface located on the other side of the central rib 7, which serves as a pivot axis, will be biased in tension. This deformation of the intermediate element 3 causes for first effect a movement of the foot, according to a natural movement explained above, and the rod 2 relative to the sole 1 and therefore to the gliding board, inducing for second effect a better location of the effort of the body precisely at a side portion corresponding to the region of one of Ste 1 or 5 th metatarsus of the foot. The shoe thus allows by its structure and its new mechanics to improve the transmission of the effort to the ski, taking advantage of the natural mechanics of the foot and the lower leg. As a further advantageous effect, the deformable material of the intermediate element 3 reduces the hard point felt on the foot and improves the comfort of the shoe. Then, this pivoting of the upper part 2 of the shoe in return promotes bending of the skier's leg.

En résumé, la chaussure permet ainsi la mise en oeuvre des effets techniques suivants, dans l'ordre chronologique :

  • elle réagit à un effort initial d'un utilisateur exercé sur le collier de la chaussure par la transmission jusqu'à l'engin de glisse de cet effort par les parties rigides de la chaussure, l'effort initial étant réalisé de manière traditionnelle par des flexions des genoux ;
  • cette flexion des genoux induit un mouvement naturel du pied, rendu possible par la chaussure, par la partie déformable qui induit un pivotement de la partie haute 2 de la chaussure pour accompagner ce mouvement naturel, permettant ainsi de mieux localiser le poids d'un utilisateur en un point différent de la chaussure, induisant un meilleur effet de guidage de l'engin de glisse ;
  • l'effort initial réalisé par l'utilisateur sur la chaussure est amplifié par le pivotement mentionné ci-dessus de la chaussure qui accompagne ainsi ce mouvement qui devient plus facile et plus efficace.
Ce comportement de la chaussure inclut donc principalement les deux améliorations suivantes aux chaussures traditionnelles :
  • le pied est mobile par rapport à l'engin de glisse et permet une autre localisation plus efficace du poids du skieur sur l'engin de glisse ;
  • le mouvement de flexion des genoux et de guidage traditionnel est facilité et amplifié par la chaussure.
In summary, the shoe thus allows the implementation of the following technical effects, in chronological order:
  • it responds to an initial effort of a user exerted on the collar of the shoe by the transmission to the gliding device of this effort by the rigid parts of the shoe, the initial effort being made in a traditional manner by bending of the knees;
  • this flexion of the knees induces a natural movement of the foot, made possible by the shoe, by the deformable part which induces a pivoting of the upper part 2 of the shoe to accompany this natural movement, thus making it possible to better locate the weight of a user at a different point of the shoe, inducing a better guiding effect of the gliding apparatus;
  • the initial effort made by the user on the shoe is amplified by the pivoting mentioned above of the shoe which thus accompanies this movement which becomes easier and more effective.
This behavior of the shoe therefore mainly includes the following two improvements to traditional shoes:
  • the foot is movable relative to the gliding machine and allows another more effective location of the weight of the skier on the gliding machine;
  • the knee bending and traditional guiding movement is facilitated and amplified by the shoe.

La chaussure n'est donc plus un élément rigide et passif mais a ainsi un comportement en harmonie avec le corps du skieur qui amplifie l'effet de guidage du skieur sur son ski. Elle permet de conserver l'avantage de la transmission traditionnelle des efforts du skieur vers le ski par la rigidité globale de sa structure tout en ajoutant un affinement de cette transmission grâce à sa légère déformation permettant un mouvement du type oscillation latérale.The shoe is no longer a rigid and passive element but has a behavior in harmony with the body of the skier which amplifies the guiding effect of the skier on his ski. It preserves the advantage of the traditional transmission of the efforts of the skier to the ski by the overall rigidity of its structure while adding a refinement of this transmission thanks to its slight deformation allowing a movement of the type lateral oscillation.

Les rigidités et propriétés des différents matériaux utilisés dans les différentes parties de la chaussure peuvent varier selon une large plage. Comme expliqué précédemment, le matériau rigide des parties basse 1 et haute 2 de la chaussure pourra être un matériau plastique de dureté au moins égale à 40 shD, ou tout autre matériau habituellement utilisé pour les chaussures de ski. Le matériau déformable de l'élément intermédiaire 3 peut être de différents types, chacun de ces types participant au guidage du ski d'une manière particulière. Par exemple, un matériau déformable amortisseur d'énergie comme une mousse polyuréthane peut être utilisé. Un tel choix permettra d'absorber une partie des efforts transmis par le skieur et conviendra mieux aux débutants, pour un guidage peu précis du ski, et pour une utilisation en relative ligne droite comme le cas d'une descente en compétition. Le matériau déformable peut aussi être un matériau élastique comme un caoutchouc, permettant une restitution d'une partie de l'énergie transmise. Pour une utilisation en compétition en slalom spécial, un matériau hyper élastique pourrait être utilisé, afin de permettre une restitution dynamique de l'énergie pour un changement de direction rapide et précis. Tout matériau élastique intermédiaire pourrait être utilisé. Enfin, un matériau élastique de caractéristiques variables en fonction de ses conditions d'utilisation peut être implémenté. Par exemple, un matériau viscoélastique pourra être absorbant en cas de sollicitations à faible vitesse et élastique pour les sollicitations à grande vitesse. Son utilisation permettra donc à la chaussure de se comporter différemment en fonction du comportement du skieur.The rigidities and properties of the different materials used in the different parts of the shoe can vary over a wide range. As explained above, the rigid material of the lower 1 and high 2 parts of the shoe may be a plastic material of hardness at least equal to 40 shD, or any other material usually used for ski boots. The deformable material of the intermediate element 3 may be of different types, each of these types participating in the guidance of the ski in a particular manner. For example, a deformable energy-absorbing material such as a polyurethane foam can be used. Such a choice will absorb some of the effort transmitted by the skier and will be better for beginners, for a less precise guidance of the ski, and for a use in relative straight line as the case of a descent in competition. The deformable material may also be an elastic material such as a rubber, allowing a portion of the transmitted energy to be restored. For use in competition in special slalom, a hyper elastic material could be used, to allow a dynamic restitution of the energy for a fast and precise change of direction. Any intermediate elastic material could be used. Finally, an elastic material of variable characteristics according to its conditions of use can be implemented. For example, a viscoelastic material may be absorbent in case of low speed and elastic loads for high speed stresses. Its use will therefore allow the shoe to behave differently depending on the behavior of the skier.

Le terme "déformable" utilisé précédemment a donc un sens très large dans cette invention, intégrant notamment toutes les variantes mentionnées ci-dessus. Il inclut aussi des matériaux plastiques de dureté inférieure au matériau rigide plus dur composant le reste de la chaussure, soit inférieure à 60 shD, qui auront un caractère déformable par rapport au reste de la chaussure. Le point commun de tous ces matériaux est leur possibilité de déformation relativement aux chaussures habituelles classiques, induisant un effet technique de mobilité par rotation latérale entre les deux parties de chaussure qu'il sépare. Ces matériaux seront ainsi choisis de manière adaptée à l'utilisation souhaitée de la chaussure, selon le large choix mentionné ci-dessus.The term "deformable" previously used therefore has a very broad meaning in this invention, integrating in particular all the variants mentioned above. It also includes plastic materials of lower hardness than the stiffer hard material composing the rest of the shoe, less than 60 shD, which will have a deformable character compared to the rest of the shoe. The common point of all these materials is their possibility of deformation relative to the usual conventional shoes, inducing a technical effect of mobility by lateral rotation between the two shoe parts that it separates. These materials will thus be chosen in a manner adapted to the desired use of the shoe, according to the wide choice mentioned above.

En variante, cette même structure de chaussure de ski peut être exploitée avec un élément intermédiaire très rigide non déformable, comme un matériau en fibres de carbone ou un métal par exemple, pour des utilisations de compétition dans lesquelles le skieur ne recherche plus une harmonie confortable avec sa chaussure mais une très grande rigidité pour une transmission passive et intégrale des efforts qu'il exerce. Ainsi, cette même structure de chaussure permet avantageusement de construire une large palette de comportement de chaussures de ski, basées sur le même procédé de fabrication, qui convient donc bien à la personnalisation des chaussures en fonction des besoins des utilisateurs.As a variant, this same ski boot structure can be exploited with a very rigid non-deformable intermediate element, such as a carbon fiber material or a metal for example, for competitive uses in which the skier no longer seeks a comfortable harmony with his shoe but a very high rigidity for a passive transmission and integral efforts it exercises. Thus, this same shoe structure advantageously allows to build a wide range of ski boots behavior, based on the same manufacturing process, which is therefore well suited to the personalization of shoes according to the needs of users.

Nous allons voir par la suite des variantes. reprenant le même concept pour obtenir sensiblement le même résultat. Pour une raison d'homogénéité et de simplicité, nous continuerons d'utiliser les terminologies "partie basse" pour une partie de la chaussure comprenant une liaison avec le ski de sorte d'être sensiblement immobile vis-à-vis du ski et "partie haute" pour une partie de la chaussure comprenant la liaison avec le tibia et le bas de jambe du skieur de sorte d'être sensiblement immobile par rapport à la jambe du skieur et d'accompagner son mouvement, même si les différents modes d'exécution qui vont être décrits ci-après vont montrer que ces parties ne sont pas obligatoirement intégralement hautes et basses, et peuvent ne pas coïncider en une séparation du type semelle/tige. Dans tous les cas, la partie haute aura une liberté de rotation latérale vis-à-vis de la partie basse de la chaussure.We will see later variations. using the same concept to achieve substantially the same result. For a reason of homogeneity and simplicity, we will continue to use the terminologies "lower part" for a part of the shoe including a connection with the ski so as to be substantially immobile vis-à-vis the ski and "part high "for a part of the shoe including the binding with the shin and the lower leg of the skier so as to be substantially immobile with respect to the leg of the skier and accompany his movement, even if the different modes of execution which will be described below will show that these parts are not necessarily completely high and low, and may not coincide in a separation of the sole / stem type. In all cases, the upper part will have a lateral freedom of rotation vis-à-vis the lower part of the shoe.

La figure 5 illustre une option qui est d'ailleurs compatible avec des modes de réalisation de l'invention, qui permet pour une chaussure donnée d'effectuer un réglage de la mobilité de la partie haute 2 en un point donné. Cette solution repose par exemple sur une vis de réglage 19 dont la tête est accessible sous la face inférieure de la partie inférieure 1 de la chaussure et dont l'extrémité se positionne dans l'épaisseur entre les deux parties basse 1 et haute 2 de la chaussure, dans une ouverture au sein de l'élément intermédiaire 3. Cette extrémité de la vis 19 représente donc une butée pour la partie haute 2 qui limite sa possibilité de descente en cas de compression de l'élément intermédiaire 3. Une telle solution peut être implémentée en tout endroit de la chaussure, mais sera surtout avantageuse au niveau des zones de pivotement de plus forte amplitude.The figure 5 illustrates an option that is also compatible with embodiments of the invention, which allows for a given shoe to adjust the mobility of the upper part 2 at a given point. This solution rests for example on an adjusting screw 19 whose head is accessible under the lower face of the lower part 1 of the boot and whose end is positioned in the thickness between the two lower parts 1 and 2 high of the shoe, in an opening within the intermediate element 3. This end of the screw 19 therefore represents a stop for the upper part 2 which limits its possibility of descent in the event of compression of the intermediate element 3. Such a solution can be implemented anywhere in the shoe, but will be especially advantageous at the areas of pivoting of greater amplitude.

Comme cela a été vu plus haut, la solution permet un pivotement latéral de la partie haute 2 de la chaussure sous l'effort du skieur, ce pivotement ayant la plus grande amplitude dans les zones de la chaussure recevant les têtes des 1ier et 5ième métatarse du pied sur lesquelles se répartit l'essentiel du poids du skieur. Ce poids du skieur oscille entre ces deux points d'appui latéraux à l'avant du pied et la chaussure a une structure lui permettant de réagir en suivant plus ou moins ce mouvement d'oscillation. La présence du matériau déformable de l'élément intermédiaire 3 au niveau du talon dans le premier mode de réalisation a donc pour principale fonction le confort du pied sur ce point d'appui au niveau du talon.As has been seen above, the solution allows a lateral pivoting of the upper part 2 of the boot under the effort of the skier, this pivoting having the greatest amplitude in the areas of the shoe receiving the heads of the 1st and 5th. th metatarsal of the foot on which distributes most of the weight of the skier. This weight of the skier oscillates between these two lateral points of support at the front of the foot and the shoe has a structure allowing it to react by following more or less this oscillation movement. The presence of the deformable material of the intermediate element 3 at the heel in the first embodiment therefore has for main function the comfort of the foot on this point of support at the heel.

Suite aux conclusions précédentes, il apparaît donc qu'il n'est pas indispensable que l'élément intermédiaire s'étende sur la partie arrière de la chaussure. Ainsi, les figures 6 à 12 illustrent des variantes dans lesquelles la partie basse 1' de la chaussure consiste en une partie de semelle comprenant un trottoir avant 4' et ne s'étendant pas jusqu'au trottoir arrière de la chaussure qui appartient à la partie haute 2' de la chaussure. Cette partie basse 1' s'étend environ sur les deux tiers de la longueur de la chaussure.Following the previous conclusions, it therefore appears that it is not essential for the intermediate element to extend on the rear part of the boot. Thus, Figures 6 to 12 illustrate variants in which the lower part 1 'of the shoe consists of a sole part comprising a front sidewalk 4' and not extending to the rear sidewalk of the shoe which belongs to the upper part 2 'of the shoe . This lower part 1 'extends about two thirds of the length of the shoe.

La géométrie des différents éléments 1', 2', 3' reste très proche du mode de réalisation précédent, outre la troncature des deux parties inférieures de semelle 1', 3'. Le principe repose toujours sur une semelle classique et normalisée de chaussure de ski globalement fragmentée en trois semelles horizontales superposées et fixées entre elles sur toute leur surface de contact, la pièce interface intermédiaire 3' prise en "sandwich" ayant la possibilité, en fonction de ses caractéristiques, d'offrir une mobilité latérale entre la tige 2' et la semelle 1' fixée sur la planche de glisse.The geometry of the various elements 1 ', 2', 3 'remains very close to the previous embodiment, in addition to the truncation of the two lower sole portions 1', 3 '. The principle is always based on a classic sole and standardized ski boot generally fragmented into three horizontal superimposed soles and fixed together over their entire contact surface, the intermediate interfacing piece 3 'sandwiched having the possibility, according to its characteristics, to offer lateral mobility between the rod 2 'and the sole 1' fixed on the gliding board.

Dans la première variante illustrée sur les figures 6 à 8, une tige rigide 20 est utilisée pour renforcer la fixation de la semelle 1'. Pour cela, la tige 20 est insérée longitudinalement par une ouverture dans le trottoir arrière de la chaussure et s'étend jusque vers l'avant de la chaussure, en se positionnant dans une ouverture prévue dans la nervure 7' de la semelle basse 1'. Par ce biais, une fixation entre les parties basse 1' et haute 2' de la chaussure est directement réalisée, ce qui renforce bien la fixation par les collages entre la semelle 1' et la pièce interface 3' puis entre la pièce intermédiaire 3' et la zone inférieure 17' de la partie haute 2'.In the first variant illustrated on the Figures 6 to 8 , a rigid rod 20 is used to strengthen the attachment of the sole 1 '. For this, the rod 20 is inserted longitudinally through an opening in the rear sidewalk of the shoe and extends to the front of the shoe, positioning itself in an opening provided in the rib 7 'of the lower sole 1' . By this means, a binding between the lower 1 'and high 2' parts of the shoe is directly made, which reinforces the fixing by the gluing between the sole 1 'and the interface piece 3' and between the intermediate piece 3 ' and the lower zone 17 'of the upper part 2'.

La seconde variante illustrée sur les figures 9 à 12 est la même que la précédente sans la tige 20.The second variant illustrated on the Figures 9 to 12 is the same as the previous without the stem 20.

Une première sous-variante en relation avec les figures 1 à 12 peut consister en la suppression des nervures 7, 7', l'élément intermédiaire s'étendant alors sur toute la surface de la semelle de la chaussure pour séparer totalement les parties basses 1 et hautes 2 de la chaussure. Dans une telle variante, cet élément intermédiaire sera doté d'une fonction supplémentaire d'amortissement des chocs verticaux exercés sur la chaussure, tout en conservant la possibilité de la rotation latérale, un côté pouvant être comprimé et l'autre étiré en traction dans le cas d'une transmission d'un effort décentré latéralement par le poids du skieur.A first sub-variant in relation to Figures 1 to 12 may consist of the removal of the ribs 7, 7 ', the intermediate element then extending over the entire surface of the sole of the shoe to fully separate the lower 1 and high 2 of the shoe. In such an embodiment, this intermediate element will be provided with an additional function of damping vertical shocks exerted on the shoe, while retaining the possibility of lateral rotation, one side being compressible and the other stretched in tension in the case of a transmission of a force laterally offset by the weight of the skier.

Une seconde sous-variante opposée peut consister en une nervure centrale plus large, ne s'étendant toutefois pas jusqu'aux deux points d'appui avant sur le pied du skieur pour permettre la mise en oeuvre du pivot latéral autour de cette nervure. La nervure peut être réalisée de manière différente, par l'intermédiaire de picots sensiblement alignés, voire de deux points d'appui avant et arrière. En variante, la nervure peut être obtenue par un certain nombre de vis sensiblement alignées. La nervure peut être dissymétrique, décalée par rapport à l'axe de symétrie longitudinal de la chaussure, voire inclinée.A second opposite sub-variant may consist of a wider central rib, however not extending to the two front support points on the skier's foot to allow the implementation of the lateral pivot around this rib. The rib can be made differently, by means of substantially aligned pins, or even two points of support front and rear. Alternatively, the rib can be obtained by a number of substantially aligned screws. The rib may be asymmetrical, offset from the longitudinal axis of symmetry of the shoe, or inclined.

Selon la description précédente, il apparaît que la chaussure peut être obtenue par la superposition d'éléments physiquement distincts. Toutefois, selon une troisième sous-variante, la chaussure peut être obtenue par des procédés réunissant plusieurs injections de matériaux plastiques. Par exemple, la tige 2 et la semelle 1 pourraient être formés lors d'une même étape d'injection, les deux parties de chaussure 1, 2 ne formant ainsi qu'un seul corps physique continu et étant liées au niveau de la nervure 7, 7', l'élément intermédiaire 3, 3' étant ajouté par la suite.According to the foregoing description, it appears that the shoe can be obtained by the superposition of physically distinct elements. However, according to a third sub-variant, the shoe can be obtained by methods combining several injections of plastic materials. For example, the rod 2 and the sole 1 could be formed during the same injection step, the two shoe parts 1, 2 thus forming a single continuous physical body and being connected at the rib 7 , 7 ', the intermediate element 3, 3' being added thereafter.

Selon une quatrième sous-variante les différents éléments superposés ne sont pas fixés entre eux sur toute leur surface de contact. Avantageusement, ils seront fixés sur au moins une partie de la zone périphérique de la chaussure, pour éviter leur écartement et l'entrée de poussières entre les couches de la chaussure. Leur fixation se fait par des moyens distincts, d'une part un premier moyen pour fixer la partie basse 1 à l'élément de liaison 3 et d'autre part un second moyen pour fixer l'élément de liaison 3 à la partie haute de la chaussure 2. Dans ces zones de fixation, l'élément de liaison travaillera en traction sur un côté et en compression sur l'autre côté lors des rotations latérales de la partie haute 2 par rapport à la partie basse 1. Ces moyens de fixation peuvent être des moyens mécaniques, des collages, soudures...According to a fourth sub-variant, the different superposed elements are not fixed to each other over their entire contact surface. Advantageously, they will be fixed on at least a portion of the peripheral zone of the shoe, to prevent their spacing and the entry of dust between the layers of the shoe. Their fixing is done by different means, firstly a first means for fixing the lower part 1 to the connecting element 3 and secondly a second means for fixing the connecting element 3 to the upper part of 2. In these areas of attachment, the connecting element will work in traction on one side and in compression on the other side during lateral rotations of the upper part. 2 relative to the lower part 1. These fixing means can be mechanical means, collages, welds ...

Selon une cinquième sous-variante, le concept peut être simplement mis en oeuvre sur les chaussures existantes munies de talonnettes avant et arrière amovibles. Pour cela, un élément intermédiaire de faible épaisseur peut être positionné entre la talonnette amovible et la chaussure, l'ensemble étant maintenu en position par des vis reliant la talonnette et le reste de la chaussure, ces vis étant positionnées au niveau de la partie centrale de la talonnette pour définir une liaison équivalente à la nervure 7, 7' précédente et permettre la fonction d'oscillation latérale de la chaussure relativement aux talonnettes amovibles.According to a fifth sub-variant, the concept can be simply implemented on existing shoes with removable front and rear heelettes. For this, an intermediate element of small thickness can be positioned between the removable heel and the shoe, the assembly being held in position by screws connecting the heel and the rest of the shoe, these screws being positioned at the central portion. of the heel piece to define a connection equivalent to the preceding rib 7, 7 'and to allow the lateral oscillation function of the boot relative to the removable heel pieces.

Les nombreuses variantes décrites précédemment ont toutes en commun une fragmentation d'une partie de la semelle de la chaussure en couches horizontales. Toutefois, il est possible d'obtenir une solution équivalente avec une fragmentation différente de la structure de la chaussure, basée sur la répartition sur la surface extérieure de la chaussure de bandes étroites traversantes, c'est à dire occupant toute l'épaisseur de la paroi de la tige de sa surface extérieure jusqu'à sa surface intérieure, dans un matériau particulier formant une géométrie particulière, pouvant non seulement être positionnées au niveau de la semelle de la chaussure mais aussi au sein de la paroi de la tige de la chaussure, cette géométrie particulière ayant pour fonction de permettre la séparation mécanique entre deux parties dites haute et basse de la chaussure, dotées d'une mobilité relative de type oscillations latérales comme explicité ci-dessus. Le mode de réalisation en référence aux figures 13 à 16 illustre une telle approche.The many variants described above all have in common a fragmentation of a portion of the sole of the shoe in horizontal layers. However, it is possible to obtain an equivalent solution with a fragmentation different from the structure of the shoe, based on the distribution on the outer surface of the shoe narrow strips through, ie occupying the entire thickness of the wall of the stem from its outer surface to its inner surface, in a particular material forming a particular geometry, which can not only be positioned at the sole of the shoe but also within the wall of the upper of the shoe , this particular geometry having the function of allowing the mechanical separation between two so-called high and low parts of the boot, provided with a relative mobility of the lateral oscillation type as explained above. The embodiment with reference to Figures 13 to 16 illustrates such an approach.

Le concept de l'invention consiste en la séparation de la chaussure en deux parties, une partie dite "basse" liée à la planche de glisse et une partie dite "haute" liée à la jambe du skieur et possédant une mobilité latérale par rapport à cette partie basse considérée comme fixe, par l'intermédiaire d'une zone de liaison qui consiste en une partie de la chaussure dotée de propriétés mécaniques particulières.The concept of the invention consists of the separation of the shoe into two parts, a so-called "low" part linked to the gliding board and a so-called "high" part linked to the skier's leg and having a lateral mobility with respect to this lower part considered as fixed, through a connecting zone which consists of a part of the shoe with special mechanical properties.

Sur le mode d'exécution de l'invention, une chaussure de ski est illustrée dont la partie avant de la chaussure peut pivoter autour de la plaque d'appui 21 de la semelle de la chaussure. Pour cela, un élément intermédiaire 23 est réalisé sous la forme de deux bandes étroites en matériau déformable formant deux U latéraux inversés, qui s'étendent sur la surface extérieure de la semelle de la chaussure. Ces deux bandes en U inversé se composent d'une part de bandes 26 parallèles et transversales, réparties de part et d'autre de la plaque d'appui 21 sur la surface horizontale inférieure de la semelle de la chaussure, et d'autre part de bandes 28 qui remontent ensuite sur la paroi latérale sensiblement verticale de la semelle de la chaussure et qui se rejoignent pour former le sommet du U inversé. Les bandes parallèles horizontales 26 des deux parties en forme de U inversé de l'élément intermédiaire 23 ne se rejoignent pas sous la semelle mais laissent une partie centrale 27 non découpées, qui joue un rôle sensiblement équivalent à celui de la nervure 7 décrite précédemment. Le déplacement du poids du skieur lors d'une initiation d'une courbe induit une surpression sur une partie latérale de la chaussure. La bande en U subissant cette surpression va se comprimer au niveau de sa partie 28 dans le plan vertical alors que la partie horizontale 26 va être sollicitée en cisaillement. Par ces propriétés mécaniques, cette bande en U inversé va permettre à la partie haute de la chaussure de pivoter latéralement, la plaque d'appui 21 de la semelle de la chaussure restant immobile en appui sur la planche de glisse.In the embodiment of the invention, a ski boot is illustrated in which the front portion of the boot can pivot around the support plate 21 of the sole of the boot. For this, an intermediate element 23 is made in the form of two narrow strips of deformable material forming two inverted side U, which extend on the outer surface of the sole of the shoe. These two inverted U-shaped strips consist on the one hand of parallel and transverse strips 26, distributed on either side of the support plate 21 on the lower horizontal surface of the sole of the boot, and on the other hand strips 28 which then go up on the substantially vertical side wall of the sole of the shoe and which meet to form the top of the inverted U. The horizontal parallel strips 26 of the two inverted U-shaped portions of the intermediate element 23 do not meet under the sole but leave a central portion 27 uncut, which plays a role substantially equivalent to that of the rib 7 described above. The movement of the weight of the skier during an initiation of a curve induces an overpressure on a lateral part of the shoe. The U-band undergoing this overpressure will compress at its portion 28 in the vertical plane while the horizontal portion 26 will be stressed in shear. By these mechanical properties, this inverted U-shaped band will allow the upper part of the boot to pivot laterally, the support plate 21 of the sole of the shoe remaining stationary bearing on the gliding board.

La partie arrière de la chaussure illustre une autre implémentation possible de la solution dans laquelle la partie basse 21' de la chaussure fixée sur la planche de glisse comprend une partie arrière de la semelle incluant le trottoir arrière 25. L'élément intermédiaire 23' sépare cette partie basse 21' du reste de la chaussure par une bande en matériau déformable qui partage la paroi en deux en s'étendant le long de la paroi de la chaussure depuis un point 29 au niveau de la semelle, en contournant le trottoir 25 en un point 30 positionné dans la paroi de la tige de la chaussure au-dessus de ce trottoir puis en redescendant de manière symétrique sur l'autre côté de la chaussure. Cette bande est interrompue dans la partie centrale 27', autour de laquelle la partie haute 22 de la chaussure peut pivoter par rapport à la partie basse arrière 21' grâce à la bande déformable 23', travaillant en compression d'un côté et en traction de l'autre. Cette partie centrale a une fonction semblable à celle de la nervure 7 du premier mode d'exécution. Cette bande 23' s'étend aussi sur la paroi horizontale de la semelle en une bande semblable à une des bandes 26 de la partie avant. Une telle bande n'est pas représentée car masquée par une talonnette arrière 31 de la chaussure qui la recouvre.The rear part of the shoe illustrates another possible implementation of the solution in which the lower part 21 'of the boot fixed on the gliding board comprises a rear part of the sole including the rear sidewalk 25. The intermediate element 23' separates this lower part 21 'of the remainder of the shoe by a band of deformable material which divides the wall in two extending along the wall of the shoe from a point 29 at the level of the sole, bypassing the sidewalk 25 in a point 30 positioned in the wall of the upper of the shoe above this sidewalk and then down symmetrically on the other side of the shoe. This band is interrupted in the central part 27 ', around which the upper part 22 of the boot can pivot relative to the lower rear part 21' thanks to the deformable band 23 ', working in compression on one side and in tension the other. This central part has a function similar to that of rib 7 of the first embodiment. This band 23 'also extends on the horizontal wall of the sole in a band similar to one of the strips 26 of the front part. Such a band is not shown because masked by a rear heel 31 of the shoe that covers it.

Le même résultat peut être obtenu par toute autre séparation de la chaussure en deux parties, avec une bande intermédiaire de forme permettant d'isoler suffisamment les deux parties de sorte d'autoriser l'oscillation de la partie haute par rapport à la partie basse dont une partie est maintenue fixe sur la planche de glisse.The same result can be obtained by any other separation of the shoe into two parts, with an intermediate band of shape to isolate sufficiently the two parts so as to allow the oscillation of the upper part relative to the lower part of which a part is held fixed on the gliding board.

La bande intermédiaire peut être dans un matériau déformable comme explicité précédemment ou être au contraire dans un matériau très rigide, selon le comportement recherché de la chaussure. Elle est traversante pour découper intégralement la paroi de la chaussure en deux parties distinctes. Sa largeur ou épaisseur, mesurée de l'interface de la partie 21 vers l'interface de la partie 22 dans une direction perpendiculaire à la bande intermédiaire 23 disposée entre ces interfaces, reste inférieure à 4 millimètres.The intermediate band may be in a deformable material as explained above or be on the contrary in a very rigid material, depending on the desired behavior of the shoe. It is through to completely cut the wall of the shoe into two parts distinct. Its width or thickness, measured from the interface of the portion 21 towards the interface of the portion 22 in a direction perpendicular to the intermediate band 23 disposed between these interfaces, remains less than 4 millimeters.

Dans le mode d'exécution décrit, la partie basse de la chaussure consiste en la réunion de la plaque d'appui avant 21 et de la partie arrière 21' alors que la partie haute 22 de la chaussure consiste en tout le reste, incluant donc aussi par exemple le trottoir avant et la partie centrale 37 de la semelle. Cette réalisation illustre donc bien que la notion de "partie haute" et "partie basse" doit s'entendre dans un sens très large, dès lors que la partie haute aura tendance à suivre le mouvement de la jambe du skieur et sera ainsi dotée d'une mobilité latérale vis à vis de la partie basse, liée à la planche de glisse et sensiblement immobile sur cette planche de glisse.In the embodiment described, the lower part of the shoe consists of the meeting of the front support plate 21 and the rear portion 21 'whereas the upper part 22 of the shoe consists of all the rest, including also for example the front sidewalk and the central portion 37 of the sole. This realization illustrates that the concept of "high part" and "low part" must be understood in a very broad sense, since the upper part will tend to follow the movement of the leg of the skier and will thus be equipped with a lateral mobility with respect to the lower part, linked to the gliding board and substantially immobile on this gliding board.

Les différentes solutions envisagées ci-dessus peuvent être combinées entre elles pour former d'autres modes de réalisation de la chaussure. Ainsi, la partie basse avant 21 peut comprendre le trottoir avant 24 par exemple, de manière similaire à la solution proposée dans la partie arrière dans le mode d'exécution décrit en rapport aux figures 13 à 16. La partie arrière ne contient pas obligatoirement un élément intermédiaire 23' comme cela a été explicité auparavant, les impulsions latérales du poids du skieur se répartissant principalement dans la partie avant de la chaussure. La partie basse arrière 21' peut aussi consister en une plaque d'appui de la semelle de la chaussure.The different solutions envisaged above can be combined with each other to form other embodiments of the shoe. Thus, the lower front part 21 may comprise the front sidewalk 24 for example, similarly to the solution proposed in the rear part in the embodiment described with respect to the Figures 13 to 16 . The rear portion does not necessarily contain an intermediate element 23 'as has been explained before, the lateral pulses of the weight of the skier being distributed mainly in the front part of the shoe. The lower rear portion 21 'may also consist of a support plate of the sole of the shoe.

Enfin, le mode de réalisation peut consister en une mise en oeuvre très proche de la chaussure selon les figures 1 à 12 comme cela est représenté sur les variantes correspondant aux figures 17 à 20.Finally, the embodiment can consist of an implementation very close to the shoe according to the Figures 1 to 12 as shown on the variants corresponding to the Figures 17 to 20 .

La première variante illustrée sur la figure 17 et 18 consiste en une solution dans laquelle la partie basse 31 consiste en la semelle de la chaussure et est séparée de la tige 32 par une bande de liaison 33 étroite qui découpe la paroi de la chaussure sur toute sa périphérie. Comme cela est visible sur la figure 18, cette solution se différencie principalement de celle illustrée aux figures 1 et 4 en ce que la tige 32 ne contient pas de partie inférieure 17 et en ce que l'élément de liaison ne s'étend pas sur une surface horizontale mais est simplement une bande traversante dans la paroi de la chaussure.The first variant illustrated on the figure 17 and 18 consists of a solution in which the lower part 31 consists of the sole of the shoe and is separated from the rod 32 by a narrow connecting strip 33 which cuts the wall of the shoe over its entire periphery. As is visible on the figure 18 This solution differs mainly from that illustrated in Figures 1 and 4 in that the rod 32 does not contain a lower part 17 and in that the connecting element does not extend on a horizontal surface but is simply a through-band in the wall of the boot.

La seconde variante illustrée sur les figures 19 et 20 est la même que précédemment dans laquelle la bande de liaison 33' qui sépare les parties basse 31' et haute 32' ne s'étend pas sur toute la périphérie de la chaussure mais seulement dans une zone antérieure.The second variant illustrated on the Figures 19 and 20 is the same as previously in which the connecting strip 33 'which separates the lower 31' and high 32 'parts does not extend over the entire periphery of the shoe but only in an anterior area.

Enfin, il est possible d'utiliser des éléments intermédiaires d'épaisseur variable, composés de plusieurs matériaux différents, répartis de manière dissymétrique sur la chaussure, sans sortir du concept de l'invention.Finally, it is possible to use intermediate elements of variable thickness, composed of several different materials, distributed asymmetrically on the shoe, without departing from the concept of the invention.

L'invention porte aussi sur le procédé de fabrication d'une telle chaussure, qui peut comprendre selon une variante de réalisation deux étapes d'injection de matériau plastique, afin de former l'élément intermédiaire d'une part et le reste de la chaussure d'autre part. En variante, ce procédé de fabrication peut comprendre plus de deux étapes d'injection. Par exemple, la tige de la chaussure peut être bi-injectée selon un procédé habituel alors qu'une étape supplémentaire d'injection permet de former l'élément intermédiaire. Dans le cas où un matériau plus souple et déformable serait utilisé pour l'élément intermédiaire, il peut être avantageux d'en profiter pour former les rabats de la coque de la chaussure dans ce même matériau lors de la même étape d'injection.The invention also relates to the method of manufacturing such a shoe, which may comprise, according to a variant embodiment, two plastic material injection steps, in order to form the intermediate element on the one hand and the rest of the shoe on the other hand. Alternatively, this manufacturing process may comprise more than two injection steps. For example, the upper of the boot can be bi-injected according to a usual method whereas an additional injection step makes it possible to form the intermediate element. In the case where a softer and deformable material would be used for the intermediate element, it can be advantage to use to form the flaps of the shell of the shoe in the same material during the same injection step.

En variante, d'autres procédés de fabrication peuvent être utilisés comme un élément intermédiaire fabriqué in situ, par coulage par exemple.Alternatively, other manufacturing methods may be used as an intermediate element manufactured in situ, for example by casting.

Ainsi, il apparaît donc bien que la chaussure obtenue conserve une forme globalement identique aux chaussures de l'art antérieur, sa structure étant toutefois différente puisqu'intégrant un élément intermédiaire dans un matériau différent de la majorité de la chaussure, qui sert à séparer la chaussure en deux parties mécaniquement relativement indépendantes. Comme cela ressort des explications précédentes, cette séparation de la chaussure ne s'entend pas par une réelle séparation physique de parties distinctes : en effet, dans le mode d'exécution, il est clair que les parties hautes et basses forment un ensemble continu car liées par exemple par les parties 27, 27'. Cela garantit une rigidité et résistance nécessaire de la chaussure, tout en autorisant une mobilité mécanique d'une partie de cet ensemble relativement à l'autre.Thus, it therefore appears that the shoe obtained retains a shape generally identical to the shoes of the prior art, its structure being however different since incorporating an intermediate element in a material different from the majority of the shoe, which serves to separate the shoe in two parts mechanically relatively independent. As is apparent from the preceding explanations, this separation of the shoe does not mean a real physical separation of distinct parts: indeed, in the embodiment, it is clear that the high and low parts form a continuous set because linked for example by parts 27, 27 '. This ensures a rigidity and necessary strength of the shoe, while allowing a mechanical mobility of one part of this set relative to the other.

Claims (17)

  1. Sports shoe for sliding gear, comprising a lower portion (21; 21'; 31; 31') intended for being fastened on a sliding gear, a upper portion (22; 32; 32') having an opening (15) for receiving a foot, and a connecting element (23; 23'; 33; 33') inserted between the lower (21; 21'; 31; 31') and upper (22; 32; 32') portions, characterised in that the two portions, namely the lower and the upper portion, are made of a plastics material having a hardness of at least equal to 40 ShD, and in that the connecting element (23; 23'; 33; 33') represents a fragmentation of the structure of the shoe and takes the shape of at least one small traversing strip (23; 23'; 33; 33'), namely filling the whole thickness of the wall of the shaft of the shoe from its outer surface until its inner surface, and having a small thickness measured from the interface of the lower portion (21; 21'; 31; 31') to the interface of the upper portion (22; 32; 32') in a direction perpendicular to the direction of the strip and cutting the wall of the shoe in two parts, the connecting element (23; 23'; 33; 33') such being capable of allowing a lateral oscillation of the upper portion (22; 32; 32') of the shoe with respect to its lower portion (21; 21'; 31; 31') .
  2. Sports shoe for sliding gear according to claim 1, characterised in that the thickness of the connecting element (23; 23'; 33; 33') is less than 4 millimetres.
  3. Sports shoe for sliding gear according to claim 1, characterised in that the connecting element (23; 23'; 33; 33') is fastened to the lower portion (21; 21'; 31; 31') and the upper portion (22; 32; 32') by separate fastening means on at least one part of the peripheral zone of the shoe, in a manner of working by compression on the one hand and by traction on the other hand when the upper portion (22; 32; 32') of the shoe makes an oscillation movement with respect to the lower portion (21; 21'; 31; 31').
  4. Sports shoe for sliding gear according to claim 1, characterised in that the connecting element (23; 23'; 33; 33') comprises small traversing strips (26, 28, 29, 30) on the wall of the shoe, on the vertical and/or the horizontal faces of the shoe.
  5. Sports shoe for sliding gear according to the preceding claim, characterised in that the lower portion (21) comprises a supporting plate of the shoe sole on the sliding gear, and in that the connecting element (23) comprises at least two lateral parts on a section having the shape of an inverted U, each inverted U presenting two parallel horizontal parts (26) extending in a transverse direction of the shoe under the shoe sole over the entire supporting plate (21), and a part (28) extending in a vertical plane and comprising the link of two U shaped parts.
  6. Sports shoe for sliding gear according to the preceding claim, characterised in that the horizontal parallel parts (26) of respectively each lateral inverted U shaped portion of the connecting element (23) are not linked together but leave a central part (27) of the supporting plate (21) not traversed.
  7. Sports shoe for sliding gear according to claim 3, characterised in that the lower portion (21') comprises a curb (25) of the shoe sole, the connecting element (23') which takes the shape of a narrow strip extending under the shoe sole in an essentially transverse direction and on the shaft of the shoe, beginning at a point (29) at the level of the sole on a first side of the shoe, going up on the first side wall of the shoe, and passing over the curb (25) before going down on the second side wall of the shaft until a point (29') at the second side of the shoe.
  8. Sports shoe for sliding gear according to the preceding claim, characterised in that the connecting element (23') arises until a point (30) above the curb (25) and exhibits an interruption (27') in the region of the central portion of the shoe.
  9. Sports shoe for sliding gear, comprising a lower portion and a connecting element according to any one of claims 3 to 7 within its front portion.
  10. Sports shoe for sliding gear according to any one of claims 3 to 8, characterised in that it comprises a lower portion and a connecting element according to any one of claims 3 to 7 within its rear portion.
  11. Sports shoe for sliding gear according to claim 2, characterised in that the lower portion (31') is a sole extending over only part of the length of the shoe, comprising a front curb (33') to coact with a fixation device mounted on the sliding gear.
  12. Sports shoe for sliding gear according to the preceding claim, characterised in that the lower portion (31) is a sole extending over the entire length of the shoe and comprises also a rear curb (33).
  13. Sports shoe for sliding gear according to any one of claims 10 to 12, characterised in that the upper portion (22, 32, 32') is a shoe shaft comprising a shell and a hinged collar as well as closing and tightening means.
  14. Sports shoe for sliding gear according to any one of the preceding claims, characterised in that the connecting element (23; 23'; 33; 33') is made from a deformable material.
  15. Ski boot according to any one of the preceding claims.
  16. Process for the manufacture of a sports shoe for sliding gear according to any one of claims 1 to 14, characterised in that it comprises a step of injection moulding of the connecting element (23; 23'; 33; 33') from a plastics material, the shoe being manufactured in several injection moulding steps with a plastics material having a hardness of at least equal to 40 ShD such that the connecting element (23; 23'; 33; 33') represents a fragmentation of the shoe structure and takes the shape of at least one narrow traversing strip (23; 23'; 33; 33'), namely occupying the whole thickness of the wall of the shoe shaft from its outer surface to its inner surface, having a small thickness measured between the interface with the lower portion (21; 21'; 31; 31') and the interface with the upper portion (22, 32, 32') in a direction perpendicular to that of the strip which cuts the wall of the shoe in two parts.
  17. Process for the manufacture of a sports shoe for sliding gear according to any one of claims 1 to 14, characterised in that it comprises a step of mould casting or soldering or cementing of the connecting element (23; 23'; 33; 33') in such a manner that the connecting element (23; 23'; 33; 33') represents a fragmentation of the shoe structure and takes the shape of at least one narrow traversing strip (23; 23'; 33; 33'), namely occupying the whole thickness of the wall of the shoe shaft from its outer surface to its inner surface, having a small thickness measured between the interface with the lower portion (21; 21'; 31; 31') and the interface with the upper portion (22; 32; 32') in a direction perpendicular to that of the strip which cuts the wall of the shoe in two parts.
EP20050425925 2005-12-28 2005-12-28 Sport shoe with lateral oscillation Active EP1803362B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20050425925 EP1803362B1 (en) 2005-12-28 2005-12-28 Sport shoe with lateral oscillation
DE200560016132 DE602005016132D1 (en) 2005-12-28 2005-12-28 Sports shoe with lateral swiveling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20050425925 EP1803362B1 (en) 2005-12-28 2005-12-28 Sport shoe with lateral oscillation

Publications (2)

Publication Number Publication Date
EP1803362A1 EP1803362A1 (en) 2007-07-04
EP1803362B1 true EP1803362B1 (en) 2009-08-19

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DE (1) DE602005016132D1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20112065A1 (en) * 2011-11-14 2013-05-15 Cabra Engineering S R L DEVICE FOR THE OPTIMIZATION OF THE CONTROL OF THE STRUCTURE OF THE SKIER AND SKI BOOTS EQUIPPED WITH THE SAFETY DEVICE
EP3195748B1 (en) * 2016-01-22 2022-07-13 Rossignol Lange S.R.L. Sole of footwear for cross-country skiing

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2946522A1 (en) * 1979-11-17 1981-05-21 Georg 7272 Altensteig Spreng Roller skate with two pairs of rollers
WO1981002508A1 (en) * 1980-03-10 1981-09-17 Questor Corp Ski boot
FR2610797B1 (en) * 1987-02-12 1989-05-12 Salomon Sa ALPINE SKI BOOT WITH SOLE PROVIDED WITH A SHOCK ABSORBER
AT398705B (en) * 1992-11-27 1995-01-25 Wassermann Johann Dipl Ing Dr SAFETY HOLDING DEVICE
US20020089150A1 (en) * 2001-01-05 2002-07-11 Musho Edward J. Snowboard boot with articulating binding interface
US7194826B2 (en) * 2004-02-06 2007-03-27 Nike, Inc. Sole structure with pivoting cleat assembly

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EP1803362A1 (en) 2007-07-04
DE602005016132D1 (en) 2009-10-01

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