Transpiring sole structure for footwear

Description

[0001] The present invention relates to a structure of a sole which allows transpiration of the item of footwear whereon it is mounted. From the European patent EP-A-0382904 a transpiring sole structure is known. composed of a tread with through holes via its thickness, which holes are closed above by a microporous membrane which is selectively permeable to air but not to water.

[0002] This type of perforated sole allows the expulsion of stagnant air inside the footwear, but in actual fact its efficiency could be affected by the fact that the micro holes of the tread are subject to rapid blockage, therefore limiting or even preventing the passage of airthrough them.

[0003] From the European patent EP-A-479183 another type of transpiring sole structure is known where transpiration takes place through a band extending peripherically upwards from the outer edge of the tread.

[0004] In this solution provision is made for a second perforated band inside the first band, to be superimposed and attached to the latter by placing in between a microporous membrane which is selectively permeable to air but not to water

[0005] This structure also has a grid of diaphragms separated by cracks, which grid, attached to the upper base of the tread, extends perimetrically with the above mentioned internal band.

[0006] The grid is necessary so that the internal band communicating with the interior of the footwear also in the area of the sole of the foot ensures the passage of air coming also from the sole of the foot.

[0007] The upper mounted on this sole structure must necessarily be made in a transpiring material in such a way as not to jeopardise transpiration through the portion of internal band attached thereto.

[0008] In this structure moreover, although the passage of air between the interior of the footwear and the outside environment is ensured, the microporous membrane, during use, is exposed to the risk of damage when one of its parts is uncovered due to wear or breakage of the external perforated band, which represents for it the only barrier for protection against the outside.

[0009] The process of manufacturing of a known this type of sole is often significantly more complex and expensive compared to normal practice.

[0010] In many case furthermore perspiration is only possible by using a sole which appreciably modifies the original design of the footwear, making it of little use in areas wherein great importance is placed on the shape and outline of the footwear.
FR-A-2 410 448 refers to a hollow plug-in device to be positioned on the inferior portion of the upper and closed by a net: said hollow plug-in device is neither positioned in the sole nor closed by a transpiring membrane.
US-A-5 233 767 refers to a midsole including at least a plurality of plugs suitable for being deformed and a flexible, air-permeable top sole; no hole realised along sole external vertical edge, opening in at least one cavity realised inside the sole and closed by a transpiring membrane is provided.
GB-A-472955 refers to an outsole whose outer band, belonging to the external vertical edge of the shoe, provides for plurality of perforations: non transpiring membrane closing said perforations is provided and almost all perforations are closed by the shoe's upper. The object of the present invention is that of remedying the problems suffered in traditional embodiments and in particular that of providing a structure of a sole which ensures efficient exchange of air between the interior of the footwear and the external environment, in any context.
A further object of the present invention is that of providing a transpiring sole structure which allows protection of the delicate microporous membrane which is selectively permeable to air but not to water.
Another object of the present invention is that of producing a transpiring sole structure which can be used universally far any type of upper, transpiring or non-transpiring, and far any type of sole, solid or "cellular".
Yet another object of the present invention is that of providing a structure of a sole whose device far transpiration does not substantially modify either the shape or the area of intended use of the shoe itself.
A further object of the present invention is that of providing a simplified transpiring sole structure, which for this reason has a low cost of manufacture.

[0011] All the foregoing objects are achieved by providing the transpiring sole structure as claimed in claims 1-9.

[0012] Advantageously the present invention enables a transpiring sole structure to be produced without heavily modifying the original design of the sole, instead leaving it virtually unaltered when it is a cellular sole, the cells of the cellular structure being exploited directly for insertion of the means which are selectively permeable to air but not to water, and therefore only perforation of the external edge of the sole is necessary.

[0013] Perforation of the external edge of the sole allows excellent functioning of the mechanism of ventilation of the same, given that the holes cannot be clogged by dust or particles found on the ground.

[0014] The possibility of attaching the membrane for closure of the holes in a vertical position inside the holes of the sole, in the case wherein the holes open into cavities of the sole, enables the thick perforated layer of the sole itself to be exploited to protect the membrane from external agents.

[0015] The transpiring sole structure of the present invention can finally be applied universally to any type of sole, both a solid sole and a cellular type, and to any type of upper, in a transpiring or non-transpiring material, in that the air passes through the arch-support and the sole and does not involve the upper itself. This transpiring sole structure therefore can be used for any footwear model, from the classic type to a more sporty one.

[0016] The present invention may be understood better with the aid of the description of some preferred embodiments of the invention indicated hereinbelow, which must be read with reference to the accompanying drawings, wherein:

Figs. 1a and 1b show an enlarged perspective view, blown up. of the parts forming the element of the device for transpiration on insertion in the respective hole, and a schematic plan view of the sole according to a preferred embodiment.

Fig. 2a shows a plan view of a transpiring sole structure according to another embodiment of the present invention;

Fig. 2b shows the means which are selectively permeable to air but not to water, provided for the embodiment of Fig. 2a;

Fig. 3a shows a plan view of a transpiring sole structure according to another embodiment of the present invention;

Fig. 3b shows a perspective view and a sectioned plan view of the means which are selectively permeable to air but not to water, provided forthe embodiment of Fig 3a;

Fig. 4a shows another transpiring sole structure in accordance with the present invention, seen in a plan view;

Fig. 4b shows a sectioned view along line 4b-4b of the transpiring sole structure of Fig. 4a.

Fig. 4c shows an enlarged perspective view of the means which are selectively permeable to air but not to water, provided for the embodiment of Figs. 4a and 4b;

[0017] According to a first embodiment of the present invention, as illustrated in Figs. 1a and 1b, it is possible to obtain a transpiring sole structure by forming, starting from the external edge 100 of the cellular sole 103, a succession of holes 102 with a circular section which open on the external lateral wall 104 of the perimetrical cells 105 of the cellular structure so that the elements 107 with a cylindrical shape are hermetically inserted in the respective holes 102. Each element 107 comprises a hollow plug 106 having an external base 108 provided with micro holes 110 and an open internal base 112. An annular counter-plug 118 also forms part of the element 107, which is attached for water proofed closure of the internal end base 112 of each plug 106, interposing, between each plug 106 and the respective counter-plug 118, a layer 120 of material which is permeable to air but not to water, in the present case in Goretex™. Whereas the peripheral portions of the membrane are attached between the plug 106 and the corresponding counter-tap 118, the central portion of the membrane 120 itself, free from any impediment, can guarantee transpiration in optimum conditions.

[0018] This solution advantageously offers the possibility of removing individually each plug from the respective housing to perform cleaning, maintenance or exchange of the assembly of the plug-layer of material which is selectively permeable to air but not to water-counter-tap, without having to intervene directly on the overall structure of the sole, and therefore eliminates the disadvantage of having to replace the entire sole in the case of blockage or malfunctioning of one of its small parts.

[0019] Naturally the same principle applies to a solid sole, in which case the holes 102 open on the external lateral wall of the slot which extends parallel to the external edge of the solid sole itself.

[0020] According to another possible variant, if a solid sole is used, the holes 102 can be tilted upwards and open directly on the upper surface of the sole itself.

[0021] The transpiring sole structures illustrated in Figs. 2a-4c concern preferred embodiments of the invention wherein means are provided which are selectively permeable to air but not to water in the form of plugs covered in a microporous material which is permeable to air but not to water, to be inserted in a corresponding cavity provided in the internal area of the sole in such a way as to allow a water proofed closure of the internal end of the holes opening into the cavities themselves

[0022] In Figs. 2a and 2b the structure of the sole 200 comprises a front cavity 201 wherein the holes 202 provided on the edge of the front part of the sole 200 open, and a rear cavity 203 wherein the holes 202 provided on the edge of the rear part of the sole 200 open.

[0023] The front plug 204 and rear plug 205 have an identical outline and thickness to those of the corresponding cavities 201 and 203 and are made in a transpiring material.

[0024] The external lateral walls of the front plug 204 and the rear plug 205 respectively are covered by membranes 206 and 207 respectively, selectively permeable to air but not to water, and the edges of the membranes 206 and 207 respectively realise a water proof attachment onto the external lateral walls of the cavities 201 and 203 respectively, in such a way as to close the end of the holes 202 which opens into the cavities 204 and 205 respectively.

[0025] Attachment can be achieved for example by means of gluing, heat-sealing water proof stitching or by pushing the plugs 204 and 205 inside the respective housings 201 and 203 until a perfectly waterproof joint is achieved.

[0026] As an alternative solution the plugs 204 and 205 can have an internally hollow structure in a material which is still transpiring or perforated.

[0027] In Figs. 3a and 3b the transpiring sole structure 300 is provided with a pair of right and respectively left front cavities 301, wherein the holes 302 provided on the right and respectively left front part of the sole 300 open, and a pair of right and respectively left rear cavities 303, wherein the holes 302 provided on the right and respectively left rear part of the sole 300 open.

[0028] In this case the pairs of front plugs 304 and rear plugs 305, in perforated plastic or transpiring material, are internally hollow and also have the external lateral wall 306 and 307 and the upper wall 308 and 309 open to allow the passage of air between the perforated or transpiring arch-support (not shown) and the external environment through the membrane 310 and 311 which is selectively permeable to air but not to water and which covers the same external lateral wall 306 and 307 of the aforementioned front plugs 304 and rear plugs 305.

[0029] In Figs. 4a-4c the transpiring sole structure 400 of a further embodiment of the present invention comprises a cellular structure with communicating cells, the holes 402 opening on the external lateral walls of the perimetrical cells 401.

[0030] In the present embodiment provision is made for insertion of a plug 403 in each cell 401, each of which plugs 403 is a hollow cube with the lateral walls 404 and the upper wall 405 open.

[0031] Of all the plugs 403, only those relating to the perimetrical cells 401 of the cellular structure have the external lateral surface 406 covered with the microporous membrane 407, so as to block the entrance of external water towards the interior of the cellular structure.

[0032] Also with this sole structure 400 the exchange of air via the whole sole of the foot is permitted, the structure being completed simply by placing on the sole a transpiring or perforated arch-support.

[0033] Naturally, as a variant solution, the plugs 403 can also be solid but in a transpiring material, and it is also possible to leave the central cells of the cellular structure free, maintaining in any case the air exchange mechanism unaltered.

[0034] What is referred in the previous embodiments must not restrict the more general principle claimed, it being possible for example for the holes to involve a portion or even the whole edge of the sole, for the shape and number of the cavities in the internal part of the sole to be different from those shown and consequently for the means which are selectively permeable to air but not to water to be different from those shown and consequently the means which are selectively permeable to air but not to water to have a different shape, structure and dimensions and such as to adapt to the cavity wherein they are inserted, without prejudice to the presence of one or more microporous membranes for closure of the holes for waterproofing the interior of the sole.

Claims

1. A transpiring sole structure comprising a sole (103) provided with holes (102) and means (107) which are selectively permeable to air but not to water and are attached to said holes for waterproof closure, said holes opening along all or part of the outer edge of said sole and said sole being provided inside with at least one cavity (105), in which said holes (102) open, characterised in that said means are attached inside said holes (102).

2. The transpiring sole structure according to claim 1, characterised in that said means which are selectively permeable to air but not to water are in the form of a series of elements (107) for transpiration corresponding to said series of holes (102), each element (107) of said series of elements (107) comprising an assembly of a first, a second and a third part, said first part being in the form of a hollow plug (106) with open internal base (112) and micro-perforated external base (108), and having such a shape so as to adapt to the corresponding hole wherein it is hermetically inserted, said second part being in the form of a layer (120) of material which is selectively permeable to air but not to water, to be placed far a water proof closure of said open internal base (112), said third part being in the form of a counter-plug (118), axially open and inserted in said plug (106) to block said layer between the internal lateral wall of said plug and the external lateral wall of said counter-plug (118).

3. A transpiring sole structure comprising a sole (200, 300, 400) provided with holes (202, 302,402) and means (204 and 206, 205 and 207, 304 and 306, 305 and 307, 403) which are selectively permeable to air but not to water, said holes opening along all or part of the outer edge of said sole and said sole being provided with at least one cavity, in which said holes open, said means selectively permeable to air but not to water being attached on the outlet of said holes for waterproof closure of said holes, and said at least one cavity being in one of the following alternative forms:

i) of a front cavity (201 ) wherein the holes (202) provided on the front part of the sole (200) open, and a rear cavity (203) wherein the holes (202) provided on the heel of the sole (200) open,

ii) of a pair of right and respectively left front cavities (301), wherein the holes (302) provided on the right and respectively left front part of the sole (300) open, and a pair of right and respectively left rear cavities (303), wherein the holes (302) provided on the right and respectively left rear part of the sole (300) open,

characterised in that :said means which are selectively permeable to air but not to water are in the form of at least one plug (204 and 205, 304 and 305, 403) provided at said one cavity (201 and 203, 301 and 303, 401) at least, said one plug (204 and 205, 304 and 305, 403) at least having an external shape identical to said one corresponding cavity (201 and 203,301 and 303, 401) at least so as to be inserted perfectly therein, and in that the external lateral wall of said one plug (204 and 205,304 and 305, 403) at least in contact with the external lateral wall of said one corresponding cavity (201,203,301 and 303, 401) at least is covered with a microporous membrane (206 and 207, 310 and 311, 407) which is selectively permeable to air but not to water.

4. The transpiring sole structure according to claim 3, characterised in that the at least one cavity is in the form of perimetrical cells (401) of said cellular sole (400), said series of holes (402) opening on the external lateral walls of said cells (401).

5. The transpiring sole according to claims 3 and 4, characterised in that passages are provided through the internal lateral walls of the internal cells of the cellular structure, said passages placing said cells in direct communication one with the other.

6. The transpiring sole according to claim 3, characterised in that said one plug (204 and 205) at least is made in a material which is permeable to air but not to water so as to allow a passage of air from and to the external environment.

7. The transpiring sole structure according to claim 3, characterised in that said one plug (304 and 305, 403) at least is hollow internally and has at least the external lateral wall and the upper wall perforated to allow a passage of air from and to the external environment.

8. The transpiring sole structure according to claim 3 characterised in that said membrane (206 and 207, 310 and 311, 407) which is selectively permeable to air but not to water and which covers the external lateral wall of said one plug (204 and 205, 304 and 305, 403) at least is attached to said lateral wall of said one corresponding cavity (201 and 203, 301 and 303, 401) at least by any technique, chosen from among gluing, heat sealing, water proofed stitching or waterproof thrust joint.

9. The transpiring sole according to anyone of said claims 1-8 characterised in that an arch-support, transpiring or perforated above, is provided, attached to the sole, wherein when said arch- support is perforated, the holes must involve at least the area above said one cavity (105, 201 and 203,301 and 303,401) at least.

Ansprüche

1. Atmungsaktive Sohlenanordnung, welche eine Sohle (103) umfasst, die mit Löchern (102) versehen ist sowie mit Mitteln (107), die auf selektive Weise für Luft, aber nicht für Wasser durchlässig sind und die an den genannten Sohlen als wasserdichter Verschluss angebracht sind, wobei die genannten Löcher längs des gesamten oder eines Teils des Außenrandes der genannten Sohle öffnen und die genannte Sohle im Innern mindestens einen Hohlraum (105) aufweist, in welchen die genannten Löcher (102) öffnen, dadurch gekennzeichnet, dass die genannten Mittel im Innern der genannten Löcher (102) angebracht sind.

2. Atmungsaktive Sohlenanordnung gemäß Anspruch 1, dadurch gekennzeichnet, dass die genannten Mittel, welche auf selektive Weise für Luft, aber nicht für Wasser durchlässig sind, in Form einer Reihe von der Atmung dienenden Elementen (107) entsprechend der genannten Reihe von Löchern (102) vorliegen, wobei jedes Element (107) der genannten Reihe von Elementen (107) einen Aufbau aus einem ersten, einem zweiten und einem dritten Teil umfasst, wobei der genannte erste Teil in Form eines Hohlstöpsels (106) mit einer offenen inneren Grundfläche (112) und einer mit Mikrolöchern versehenen äußeren Grundfläche (108) vorliegt und eine solche Gestalt hat, dass er an das entsprechende Loch passt, in welches er hermetisch eingefügt ist; der genannte zweite Teil in Form einer Schicht (120) aus einem Material vorliegt, welches auf selektive Weise für Luft, aber nicht für Wasser durchlässig ist und welches für einen wasserdichten Verschluss der genannten offenen inneren Grundfläche (112) eingefügt ist; und der genannte dritte Teil in Form eines Gegenstöpsels (118) vorliegt, der in Axialrichtung offen ist und in den genannten Stöpsel (106) gesteckt wird, um die genannte Schicht zwischen der inneren Seitenwand des genannten Stöpsels und der äußeren Seitenwand des genannten Gegenstöpsels (118) abzublocken.

3. Atmungsaktive Sohlenanordnung, welche eine Sohle (200, 300 400) umfasst, die mit Löchern (202, 302, 402) versehen ist sowie mit Mitteln (204 und 206, 205 und 207, 304 und 306, 305 und 307, 402), die auf selektive Weise für Luft, aber nicht für Wasser durchlässig sind, wobei die genannten Löcher längs des gesamten oder eines Teils des Außenrandes der genannten Sohle öffnen und die genannte Sohle mindestens einen Hohlraum aufweist, in welchen die genannten Löcher öffnen, wobei die genannten Mittel auf selektive Weise für Luft, aber nicht für Wasser durchlässig sind und an der Austrittsöffnung der genannten Löcher zum Zweck eines wasserdichten Verschlusses der genannten Löcher angebracht sind, und der genannte wenigstens eine Hohlraum in einer der folgenden alternativen Formen vorliegt:

i) in Form eines vorderen Hohlraumes (201), in welchen die auf dem Vorderteil der Sohle (200) befindlichen Löcher (202) öffnen, und eines hinteren Hohlraumes (203), in welchen die auf dem Absatz der Sohle (200) vorhandenen Löcher (202) öffnen;

ii) in Form eines Paares rechter bzw. linker vorderer Hohlräume (301), in welchen die auf dem rechten bzw. linken Vorderteil der Sohle (300) befindlichen Löcher (302) öffnen, und eines Paares von rechten bzw. linken hinteren Hohlräumen (303), in welchen die auf dem rechten bzw. linken hinteren Teil der Sohle (300) befindlichen Löcher (302) öffnen,

dadurch gekennzeichnet, dass die genannten Mittel, welche auf selektive Weise für Luft, aber nicht für Wasser durchlässig sind, in Form von mindestens einem Stöpsel (204 und 205, 304 und 305, 403) vorliegen, welcher an dem genannten mindestens einen Hohlraum (201 und 203, 301 und 303, 401) vorhanden ist, wobei der genannte mindestens eine Stöpsel (204 und 205, 304 und 305, 403) eine äußere Gestalt aufweist, die mit derjenigen des genannten mindestens einen entsprechenden Hohlraumes (201 und 203, 301 und 303, 401) identisch ist, so dass er vollständig hineingesteckt werden kann, und dadurch, dass die äußere Seitenwand des genannten mindestens einen Stöpsels (204 und 205, 304 und 305, 403), die sich in Kontakt mit der äußeren Seitenwand des genannten mindestens einen entsprechenden Hohlraums (201 und 203, 301 und 303, 401) befindet, mit einer Mikroporenmembrane (206 und 207, 310 und 311, 407) bedeckt ist, die auf selektive Weise für Luft, aber nicht für Wasser durchlässig ist.

4. Atmungsaktive Sohlenanordnung gemäß Anspruch 3, dadurch gekennzeichnet, dass der mindestens eine Hohlraum in Form von umfänglichen Zellen (401) der genannten Zellsohle (400) vorliegt, wobei die genannte Serie von Löchern (402) auf die äußeren Seitenwände der genannten Zellen (401) öffnet.

5. Atmungsaktive Sohlenanordnung gemäß Anspruch 3 und 4, dadurch gekennzeichnet, dass Durchlassöffnungen durch die inneren Seitenwände der inneren Zellen der Zellstruktur vorhanden sind, wobei die genannten Durchlassöffnungen die direkte Verbindung zwischen den genannten Zellen untereinander herstellen.

6. Atmungsaktive Sohlenanordnung gemäß Anspruch 3, dadurch gekennzeichnet, dass der genannte mindestens eine Stöpsel (204 und 205) aus einem Material gefertigt ist, welcher für Luft, aber nicht für Wasser durchlässig ist, so dass er den Durchtritt von Luft aus der äußeren Umgebung und in die äußere Umgebung ermöglicht.

7. Atmungsaktive Sohlenanordnung gemäß Anspruch 3, dadurch gekennzeichnet, dass der genannte mindestens eine Stöpsel (304 und 305, 403) innen hohl ist und wenigstens die äußere Seitenwand und die obere Wand durchlöchert sind, um den Durchtritt von Lauft aus der äußeren Umgebung und in die äußere Umgebung zu ermöglichen.

8. Atmungsaktive Sohlenanordnung gemäß Anspruch 3, dadurch gekennzeichnet, dass die genannte Membrane (206 und 207, 310 und 311, 407), welche auf selektive Weise für Luft, aber nicht für Wasser durchlässig ist und welche die äußere Seitenwand des genannten mindestens einen Stöpsels (204 und 205, 304 und 305, 403) bedeckt, an der genannten Seitenwand des genannten mindestens einen entsprechenden Hohlraumes (201 und 203, 301 und 303, 401) mit beliebiger Technik, wobei unter Kleben, Heißkleben, wasserdichtem Nähen oder wasserdichter Druckpressung ausgewählt werden kann, angebracht ist.

9. Atmungsaktive Sohlenanordnung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass eine Stütze des Fußgewölbes, die oben atmungsaktiv oder durchlöchert ist, vorhanden und an der Sohle angebracht ist, wobei, wenn die Stütze des Fußgewölbes durchlöchert ist, diese Löcher mindestens die Fläche oberhalb des genannten mindestens einen Hohlraumes (105, 201 und 203, 301 und 303, 401) einbeziehen.

Revendications

1. Structure à semelle de transpiration comprenant une semelle (103) présentant des trous (102) et des moyens (107) qui sont sélectivement perméables à l'air mais non pas à l'eau et qui sont fixés auxdits trous en vue d'une fermeture étanche à l'eau, lesdits trous s'ouvrant le long de l'ensemble ou d'une partie du bord externe de ladite semelle, et ladite semelle présentant à l'intérieur au moins une cavité (105), dans laquelle lesdits trous (102) s'ouvrent, caractérisée en ce que lesdits moyens sont fixés à l'intérieur desdits trous (102).

2. Structure à semelle de transpiration selon la revendication 1, caractérisée en ce que lesdits moyens qui sont sélectivement perméables à l'air mais non pas à l'eau se présentent sous la forme d'une série d'éléments (107) pour la transpiration correspondant auxdites séries de trous (102), chaque élément (107) de ladite série d'éléments (107) comprenant un ensemble constitué d'une première, d'une deuxième et d'une troisième partie, ladite première partie se présentant sous la forme d'un bouchon creux (106) avec une base interne ouverte (112) et une base externe micro-perforée (108), et d'une telle forme pour s'adapter au trou correspondant dans lequel il est hermétiquement inséré, ladite deuxième partie se présentant sous la forme d'une couche (120) de matériau qui est sélectivement perméable à l'air mais non pas à l'eau, destinée à être placée en vue d'une fermeture étanche à l'eau de ladite base interne ouverte (112), ladite troisième partie se présentant sous la forme d'un contre-bouchon (118), axialement ouvert et inséré dans ledit bouchon (106) pour bloquer ladite couche entre la paroi latérale interne dudit bouchon et la paroi latérale externe dudit contre-bouchon (118).

3. Structure à semelle de transpiration comprenant une semelle (200, 300, 400) présentant des trous (202, 302, 402) et des moyens (204 et 206, 205 et 207, 304 et 306, 305 et 307, 403) qui sont sélectivement perméables à l'air mais non pas à l'eau, lesdits trous s'ouvrant sur l'ensemble ou une partie du bord externe de ladite semelle, et ladite semelle présentant au moins une cavité vers laquelle lesdits trous s'ouvrent, lesdits moyens sélectivement perméables à l'air mais non pas à l'eau étant fixés sur la sortie desdits trous en vue d'une fermeture étanche à l'eau desdits trous, et au moins une cavité précitée se présentant sous l'une des formes alternatives suivantes :

i) d'une cavité frontale (201) dans laquelle les trous (202) réalisés sur la partie avant de la semelle (200) s'ouvrent, et une cavité arrière (203) dans laquelle les trous (202) prévus au talon de la semelle (200) s'ouvrent,

ii) d'une paire de cavités frontales respectivement droite et gauche (301), dans lesquelles les trous (302) réalisés sur la partie frontale respectivement droite et gauche de la semelle (300) s'ouvrent, et une paire de cavités arrière respectivement droite et gauche (303) dans lesquelles les trous (302) réalisés sur les parties arrière respectivement droite et gauche de la semelle s'ouvrent,

caractérisé en ce que : lesdits moyens qui sont sélectivement perméables à l'air mais non pas à l'eau se présentent sous la forme d'au moins un bouchon (204 et 205, 304 et 305, 403) réalisé à ladite cavité précitée (201 et 203, 301 et 303, 401) au moins, ledit bouchon précité (204 et 205, 304 et 305, 403) ayant au moins une forme externe identique à ladite cavité correspondante précitée (201 et 203, 301 et 303, 401) au moins de manière à être inséré parfaitement dans celle-ci, et en ce que la paroi latérale externe dudit bouchon précité (204 et 205, 304 et 305, 403) au moins en contact avec la paroi latérale externe de ladite cavité correspondante précitée (201, 203, 301 et 303, 401) au moins est couverte par une membrane microporeuse (206 et 207, 310 et 311, 407) qui est sélectivement perméable à l'air mais non pas à l'eau.

4. Structure à semelle de transpiration selon la revendication 3, caractérisée en ce qu'au moins une cavité précitée se présente sous la forme d'alvéoles périmétriques (401) de ladite semelle cellulaire (400), ladite série de trous (402) s'ouvrant sur les parois latérales externes desdites alvéoles (401).

5. Semelle de transpiration selon les revendications 3 et 4, caractérisée en ce que des passages sont réalisés à travers les parois latérales internes des alvéoles internes de la structures cellulaire, lesdits passages mettant lesdites alvéoles en communication directe les unes avec les autres.

6. Semelle de transpiration selon la revendication 3, caractérisée en ce qu'un bouchon précité (204 et 205) au moins est réalisé en un matériau qui est perméable à l'air mais non pas à l'eau de manière à permettre un passage d'air de et vers l'environnement externe.

7. Structure à semelle de transpiration selon la revendication 3, caractérisée en ce que ledit bouchon précité (304 et 305, 403) au moins est creux à l'intérieur et présente au moins une paroi latérale externe et la paroi supérieure perforée pour permettre un passage de l'air de et vers l'environnement externe.

8. Structure à semelle de transpiration selon la revendication 3, caractérisée en ce que ladite membrane (206 et 207, 310 et 311, 407) qui est sélectivement perméable à l'air mais non pas à l'eau et qui couvre la paroi latérale externe dudit bouchon précité (204 et 205, 304 et 305, 403) au moins est fixée à ladite paroi latérale d'une cavité correspondante précitée (201 et 203, 301 et 303, 401) au moins par n'importe quelle technique, sélectionnée parmi le collage, le thermo-soudage, la couture. étanche à l'eau ou un joint de poussée étanche à l'eau.

9. Semelle de transpiration selon l'une desdites revendications 1 à 8, caractérisée en ce qu'un support d'arc, transpirant ou perforé au-dessus, est réalisé, fixé à la semelle, où lorsque ledit support d'arc est perforé les trous doivent impliquer au moins la zone au-dessus de ladite cavité précitée (105, 201 et 203, 301 et 303, 401) au moins.

Drawing