EP0552994B1 - Shoe, in particular a sports-shoe, comprising a spring located in the sole, enclosure and spring for such a shoe - Google Patents
Shoe, in particular a sports-shoe, comprising a spring located in the sole, enclosure and spring for such a shoe Download PDFInfo
- Publication number
- EP0552994B1 EP0552994B1 EP93400006A EP93400006A EP0552994B1 EP 0552994 B1 EP0552994 B1 EP 0552994B1 EP 93400006 A EP93400006 A EP 93400006A EP 93400006 A EP93400006 A EP 93400006A EP 0552994 B1 EP0552994 B1 EP 0552994B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- plate
- shoe
- cassette
- sole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000002683 foot Anatomy 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 210000001872 metatarsal bone Anatomy 0.000 claims description 6
- 230000007423 decrease Effects 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000002459 sustained effect Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 description 32
- 210000003789 metatarsus Anatomy 0.000 description 14
- 230000009467 reduction Effects 0.000 description 6
- 210000002414 leg Anatomy 0.000 description 5
- 230000035939 shock Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 208000031968 Cadaver Diseases 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 210000004744 fore-foot Anatomy 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 208000004067 Flatfoot Diseases 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 210000003423 ankle Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 235000019589 hardness Nutrition 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B21/00—Heels; Top-pieces or top-lifts
- A43B21/24—Heels; Top-pieces or top-lifts characterised by the constructive form
- A43B21/30—Heels with metal springs
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
- A43B13/18—Resilient soles
- A43B13/181—Resiliency achieved by the structure of the sole
- A43B13/182—Helicoidal springs
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B21/00—Heels; Top-pieces or top-lifts
- A43B21/24—Heels; Top-pieces or top-lifts characterised by the constructive form
- A43B21/32—Resilient supports for the heel of the foot
Definitions
- the invention relates to a shoe of the kind which comprises at least one spring, arranged in the sole between an upper plate and a lower plate to absorb impacts on the ground, the spring being disposed substantially vertically above the heel of the user, between the rigid upper plate and the lower plate close to the ground, and being constituted by at least one spring of the torsion spring type which comprises at least one winding with a substantially horizontal axis provided at each of its ends with a radial extension arm, the two extreme radial arms forming an angle between them, the winding being arranged so as to bear externally against one of the plates while the ends of the arms are in abutment against the other plate, l winding can approach or move away from the plate from which it is distant in a direction substantially orthogonal to this plate, while the angular difference between l he arm increases or decreases under the effect of the load applied to the spring.
- the invention relates more particularly to such a shoe intended for sports activities but can also be applied to shoes such as city shoes.
- US-A- 4,756,095 shows a shoe of this kind.
- one of the arms of the spring is immobilized in translation, while the winding of the spring is in sliding contact against the respective plate.
- the production of such a shoe is relatively complex.
- the spring does not exert a high reaction, which gives an impression of "soft" to the heel of the user.
- the invention also aims to provide a shoe in which one can put in place a spring of a particular type capable of fulfilling its role of shock absorber over a reduced vertical elastic stroke of approximately 6 to 7 mm.
- the upper plate and the lower plate may have U-shaped cross sections turning their concavity towards each other, and the wings of which fit together to ensure relative lateral holding of the two plates.
- the upper plate is rigid and is entirely located behind a transverse line intended to be located under the metatarsus of the user's foot; the sole has a transverse articulation zone at this line so that the angle formed between the plane of the rigid upper plate and the part of the sole located in front of the articulation zone can vary; the walls of the upper of the shoe which surround the foot of the user are fixed, at their lower part, to the rigid upper plate; the spring (s) is (are) located under the single zone of the rigid plate intended to be located under the heel of the user, the assembly being such that the variations of the load applied to the spring cause an oscillating movement of the rigid upper plate around the transverse line of articulation, relative to the lower plate.
- the rigid upper plate extends to the transverse line of articulation, which constitutes its front limit.
- a layer of softer material may be provided under the lower surface of this rigid lower plate, to come into contact with the ground.
- the rigid upper plate may have a surface limited to that of the heel of the shoe, while the lower plate has similar dimensions and is mounted with at least substantially vertical freedom in translation, relative to the upper plate
- the spring is arranged to give, from the start of compression, a high load, which then only doubles, after a compression stroke of about 6 or 7 mm, so as to achieve good shock absorption.
- the cassette has a triangular prismatic shape constituted by a dihedron produced with two rigid plates articulated along the edge around a transverse axis, a spring being disposed between the faces of this dihedron; this cassette is intended to be slid between an upper sole part and a lower sole part of the shoe, the length of the cassette being such that the axis of articulation is, in normal use of the shoe, substantially under the metatarsus of the user's foot, while the spring is located substantially vertical to the user's heel.
- the spring comprises at least one winding provided at each of its ends with a radial extension arm, the two extreme radial arms having substantially the same radial dimension and forming between them an angle of approximately 60 °, and it comprises two windings in opposite direction coaxial, separated from each other by a free space, the end arms located axially towards the outside of these windings being connected by a branch parallel to the axis of the springs, the winding being intended to be disposed in external support against a plate, while the ends of the arms are intended to come into sliding contact against another plate, the winding being able to approach or move away from the plate from which it is distant in a direction substantially orthogonal to this plate, while the angular difference between the arms increases or decreases, under the effect of the load.
- Figure 3 is an elevational view, on a larger scale, of the spring according to the invention.
- Figure 5 is a schematic perspective view of a cassette intended to be introduced into the sole of a shoe.
- Figure 6 is a cross section of the sole at the heel of a shoe according to the invention.
- Figure 7 is a side view with parts in section of a shoe type city shoe according to the invention.
- Figure 8 is a schematic perspective view of a detail of the shoe of Figure 6, on a larger scale.
- Figure 9 shows, similarly to Figure 7, an alternative embodiment of a city shoe.
- Figure 10 shows, similarly to Figure 9, another variant of a city shoe.
- Figure 13 is a schematic side view of another alternative embodiment of the shoe.
- the upper plate 2 is rigid, for example made of rigid plastic, having a low coefficient of friction.
- This plate 2 is located behind a transverse front limit L, constituted by a line perpendicular to the plane of Figure 1, located in the area intended to be located under the metatarsus 4 of the user's foot.
- the rigid upper plate 2 extends to the limit L which constitutes its transverse front edge.
- the upper 9 of the shoe which envelops the foot F of the user, has its lower edges fixed on the periphery of the plate 2 and, towards the front, on the upper edge of the part 6.
- the spring R is of the torsion spring 11 type; it is arranged, substantially vertical to the heel of the user, between the rigid upper plate 2 and the lower plate 3 close to the ground.
- the spring 11 comprises two coaxial windings 12, 13, in opposite directions, separated from each other by a free space 14.
- Each winding 12, 13 comprises radial end arms 12 a , 12 b , 13 a , 13 b forming between them an angle A, and substantially of the same length.
- the arms 12b, 13b are located at the outer ends of the springs 12, 13 and are mutually parallel while the arms 12a, 13a are located at the inner ends of the windings 12, 13, these two arms being parallel also.
- the outer arms 12b , 13b are connected, at their outer radial ends, by a branch 15 parallel to the axis of the windings.
- the arms 12 a , 13 a located inwards are curved outwards, at their radial ends, along lugs 16 a , 16 b .
- the spring 11 is arranged so that the windings 12, 13 bear externally against one of the plates, substantially along a generatrix.
- the windings 12, 13 are in abutment against the upper plate 2, while the branch 15 and the legs 16 a , 16 b are in abutment against the lower plate 3.
- the branch 15 and the legs 16 a , 16 b are in sliding contact against this plate 3, which is made of a material with low friction.
- Means are provided for holding the spring 11 relative to the plate 2 in the longitudinal direction and in the position where the axis of the windings is transverse. These means can be constituted by a transverse groove 17 with a concave circular profile which comes to marry part of the cylindrical surface of the windings 12 and 13. The spring 11 is kept slightly compressed between the plates 2 and 3.
- the space 18 located between the plates 2 and 3 and included between the articulation zone 5 and the spring 11 is free of any material so that the plate 2 can be angularly debated, relative to the plate 3, by oscillation around the articulation zone 5 during variations of the useful height H of the spring.
- This useful height H is equal to the distance between the leg support plane 15 and the legs 16 a, 16 b and the plane parallel to this plane support externally tangent to the windings 12 , 13.
- the space 18 a located behind the spring 11 is also free of any material.
- the height H is approximately 18 mm when the spring 11 is not subjected to any load and the spring 11 is arranged so that, from the first millimeter of reduction in the height H, the load undergone, and therefore the reaction exerted by this spring, is around 35 daN.
- the spring 11 is also arranged so that the vertical elastic stroke, that is to say the reduction in height H is approximately 6 or 7 mm for doubling the vertical load which caused the first millimeter of reduction height.
- the angle A is advantageously chosen to be close to 60 ° at rest so that the angle between an extreme radial arm 12 a , 13 a or 12 b , 13 b and the vertical is approximately 30 ° ( AT 2 ).
- the length of the lever arm d is substantially proportional to sin AT 2 .
- the lever arm d increases when the compression of the spring occurs, at the same time as the action of the windings 12, 13 increases due to the increase in torsion. This increase in the length of the lever arm d mitigates the increase in the action of the windings.
- the outer contours of the plates 2 and 3 are connected by a flexible wall 19, similar to the wall of a bellows, capable of absorbing the oscillating movements of the plate 2 relative to the plate 3.
- the lower plate 3 can be provided on its lower surface with a layer 20 of softer material, which also extends under the front part 6 of the shoe so as to constitute only a single ply.
- the plates 2 and 3 preferably have a U-shaped cross section turning their concavity towards each other.
- the concavity of the section of the upper plate 2 is turned downwards and the wings 21, 22 of this section, which are substantially vertical, are engaged between the wings 23, 24, facing upwards of the lower plate 3.
- the lower edge of the wings 21, 22 is located below the upper edge of the wings 23, 24.
- the spring 11 is calibrated so as to absorb, at the very start of its travel, for example in the first millimeter of reduction in the useful height H, a load corresponding substantially to half the weight of the user.
- the tightening of the foot in the shoe by lacing, or equivalent means remains the same during the vertical movements of the foot, while in a shoe where the vertical elasticity is produced inside the shoe, the tightening of the foot, in particular by lacing, varies constantly.
- the load reached after 6 mm of crushing would be substantially equal to six times the load obtained after 1 mm of crushing.
- the torsion spring 11 of the invention occupies almost the entire width of the heel of the shoe, which contributes to good lateral stability, the axis of the winding being placed horizontally. In the case of conventional compression springs, several springs would be necessary.
- shoes which provide, as means of cushioning in the heel, flexible materials, of the elastomer or equivalent material type, are very soft at the start of the crushing, hence a lack of lateral stability, and harden then very quickly at the end of the crushing.
- the axis 26 is intended to be located substantially under the metatarsus 4 of the foot of the user, while the spring 11 is disposed between the faces 102, 103 of the dihedral backwards where it is held by any suitable means.
- the upper plate 102 has a U-shaped cross section turning its concavity downward, as shown in FIG. 6, and comprising lateral wings 104, 105 extending downward, substantially in a vertical plane.
- the lower plate 103 also has a U-shaped cross section turning its concavity upwards and limited, on the sides, by vertical lateral wings 106, 107 situated inside the wings 104, 105, with reduced play. .
- the cooperation between the lateral wings of the plates 102 and 103 ensures transverse maintenance of one plate relative to the other.
- the lateral wings 104, 105 of the upper plate comprise, at their front end, an ear such as 27 framing a notch provided in the front edge of the upper plate 102.
- Each ear 27 has a hole serving bearing at the ends of axis 26.
- the lower plate 103 comprises a cylindrical sleeve 28 forming its front transverse edge, disposed between the ears 27.
- This sleeve 28 has a central bore traversed by the axis 26.
- a retaining lug 29 is provided at the rear of the plate 103 to cooperate with a stop provided on the rear face of the plate 102 and to keep the cassette 25 closed at rest, the spring 11 being prestressed by 1 mm.
- the assembly is such that even when the cassette is not stressed by a load, the side walls 104, 105 and 106, 107 overlap along a range.
- the plates 102 and 103 are made of a rigid plastic material, with a reduced coefficient of friction.
- the space 118 located between the axis 26 and the spring 11 of the cassette 25 is free of material like the space 18 of FIG. 1.
- This change of cassette makes it possible to best adapt the shoe to the requirements of use depending on whether the shoe will be used, for example, on a particular day for a walk or on another day for a course involving relatively frequent jumps.
- the upper sole part can comprise the plate 2 described with reference to FIGS. 1 to 3, and which is represented in FIG. 6, while the lower sole part can comprise the plate 3, also represented in FIG. 6.
- the faces external of the wings 104 and 105 of the plate 102 of the cassette are, practically, in contact with the internal faces of the wings 21, 22 of the plate 2.
- the plates 102, 103 of the cassette are rigid, it is however possible to remove the rigid plates 2 and 3 from the sole of the shoe; in such a case, the upper sole part and the lower sole part are made entirely of a flexible material.
- a shoe fitted with such a cassette works as explained above, and has the same advantages as those mentioned in connection with FIGS. 1 to 3.
- a shoe C according to the invention can be of the city shoe type with a prominent heel 30, protruding downwards while the sole 201, flexible in particular in the zone 205 located under the metatarsus away from the ground from this area to the upper level of the heel at the back. There is therefore a free space 218 between the articulation zone 205 and the heel.
- the rigid upper plate 202 has an area limited substantially to that of the heel. It extends to the rear of the shoe but, towards the front, is limited by a transverse edge 31 situated behind the articulation zone 205.
- the plate 202 has, at its periphery, a substantially vertical wall 222 extending downward.
- the lower plate 203 is also rigid and is mounted with a possibility of vertical translation relative to the plate 202. Lateral support and vertical guidance is ensured between the plates 202 and 203 by virtue of vertical walls 224 provided on the edges of the plate 203, and extending upwards, which cooperate with the wall 222.
- transverse pins 32 projecting transversely inwards, from the side walls 224, these pins 32 being engaged in vertical oblong openings 33 provided in the wall 222 of the plate 202.
- the pins 32 thus allow a relative oscillation between the plates 202 and 203 around a transverse axis and, moreover, a displacement in substantially vertical translation between these plates.
- the spring 11 is disposed between the plate 202 and the plate 203, substantially vertical to the heel of the user, this spring 11 being held by any suitable means.
- FIG. 9 shows an alternative embodiment of the city shoe of FIG. 7.
- the rigid upper plate 302 is limited by a flange 331 which comes to surround a flange 34 of the lower plate 303.
- the flanges 331 and 34 in their part transverse, have a shape curved, cylindrical, the horizontal axis of which is in the vicinity of the flexion region 305 of the sole.
- the spring 11 is housed between the plates 302, 303, the extent of which is limited to the area of the heel. There is a free space 318 between the zone 305 and the heel, so that the foot is not in too great contact on the front of the cassette.
- a sort of bellows 319 surrounds all of the plates 302, 303.
- FIG. 10 illustrates a variant of a city shoe comprising, housed in the heel, a cassette 425, similar to the cassette of FIG. 5, but of shorter length.
- the hinge pin 426 is located in the area of the front edge of the heel, the spring 11 being towards the rear.
- the cassette 425 is disposed between an upper plate 402 and a rigid lower plate 403.
- the assembly is surrounded by a sort of bellows 419. We find the flexion zone 405 at the level of the metatarsus and the free space 418.
- Figures 11 and 12 illustrate another alternative embodiment of the heel of a shoe.
- the rigid upper plate 502 is placed against the upper wall 35 of an envelope 36 integral with the sole and comprising a vertical peripheral wall 37 directed downwards.
- the plate 502 is provided with a vertical rim 531 on its contour, with the exception of its front transverse edge.
- the bottom plate 503 rigid, made of hard material like the plate 502, forms a sort of overturned cover with its rim 534 turned upwards, situated inside the wall 37 and the rim 531.
- the plate 503 can move , substantially vertically, relative to the plate 502.
- a stud 38 is provided projecting on each side, at the front and at the top of the longitudinal parts of the rim 534.
- Each stud 38 is received in a vertical groove 39 provided on the internal wall rim 534, and closed down.
- the plate 503 has at the rear, at the top of its rim, a lug 40 projecting rearwards, also received in a groove or window 41, closed downwards, from the rim 534.
- the spring 11 is disposed between the plates 502 and 503 in a manner similar to that described above.
- FIG. 13 shows a shoe whose sole has a cassette 625 a similar to the cassette 25 in FIG. 6, but moreover short, located in front of the metatarsus of the user's foot and arranged in the opposite direction.
- the edge of the cassette 625 a is located slightly in front of the metatarsus, while the spring of the cassette 625 a is located under the toe of the shoe.
- the vertical elastic stroke of the spring of the cassette 625 a is smaller than that of the spring associated with the heel; this stroke is, for example, 3 or 4 mm.
- This cassette 625 a can be combined with a second cassette 625 b , arranged like the cassette 25 in FIGS. 5 and 6, that is to say with its edge forwards and its spring under the heel.
- the cassette spring 625 b has a travel of 6 to 7 mm.
- the cassette 625 a can be combined with a rear sole part similar to that of FIG. 1.
- a shoe according to the invention remains simple to manufacture while ensuring good shock absorption of the heel on the ground with an optimal restitution of the energy stored during the impact.
- the friction between the foot and the upper of the shoe, especially at the heel, is eliminated despite the elasticity introduced at the heel.
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- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Description
L'invention est relative à une chaussure du genre de celles qui comportent au moins un ressort, disposé dans la semelle entre une plaque supérieure et une plaque inférieure pour amortir les chocs sur le sol, le ressort étant disposé sensiblement à la verticale du talon de l'utilisateur, entre la plaque supérieure rigide et la plaque inférieure proche du sol, et étant constitué par au moins un ressort du type ressort de torsion qui comprend au moins un enroulement d'axe sensiblement horizontal muni à chacune de ses extrémités d'un bras radial de prolongement, les deux bras radiaux extrêmes formant entre eux un angle, l'enroulement étant disposé de manière à être en appui extérieurement contre l'une des plaques tandis que les extrémités des bras sont en appui contre l'autre plaque, l'enroulement pouvant se rapprocher ou s'écarter de la plaque dont il est éloigné suivant une direction sensiblement orthogonale à cette plaque, tandis que l'écart angulaire entre les bras augmente ou diminue, sous l'effet de la charge appliquée sur le ressort.The invention relates to a shoe of the kind which comprises at least one spring, arranged in the sole between an upper plate and a lower plate to absorb impacts on the ground, the spring being disposed substantially vertically above the heel of the user, between the rigid upper plate and the lower plate close to the ground, and being constituted by at least one spring of the torsion spring type which comprises at least one winding with a substantially horizontal axis provided at each of its ends with a radial extension arm, the two extreme radial arms forming an angle between them, the winding being arranged so as to bear externally against one of the plates while the ends of the arms are in abutment against the other plate, l winding can approach or move away from the plate from which it is distant in a direction substantially orthogonal to this plate, while the angular difference between l he arm increases or decreases under the effect of the load applied to the spring.
L'invention concerne plus particulièrement une telle chaussure destinée aux activités sportives mais peut s'appliquer également à des chaussures type chaussures de ville.The invention relates more particularly to such a shoe intended for sports activities but can also be applied to shoes such as city shoes.
US-A- 4 756 095 montre une chaussure de ce genre. Selon ce document, l'un des bras du ressort est immobilisé en translation, tandis que l'enroulement du ressort est en appui glissant contre la plaque respective. La réalisation d'une telle chaussure est relativement complexe. En outre, au début de l'abaissement de la partie de semelle, le ressort n'exerce pas une réaction élevée, ce qui donne une impression de "mou" au talon de l'utilisateur.US-A- 4,756,095 shows a shoe of this kind. According to this document, one of the arms of the spring is immobilized in translation, while the winding of the spring is in sliding contact against the respective plate. The production of such a shoe is relatively complex. In addition, at the beginning of the lowering of the sole portion, the spring does not exert a high reaction, which gives an impression of "soft" to the heel of the user.
L'invention a pour but, surtout, de fournir une chaussure du genre défini précédemment qui réponde mieux que jusqu'à présent aux diverses exigences de la pratique et qui ne présente plus, ou à un degré moindre, les inconvénients rappelés ci-dessus.The object of the invention is, above all, to provide a shoe of the kind defined above which responds better than so far to the various requirements of the practice and which no longer has, or to a lesser degree, the drawbacks mentioned above.
L'invention a aussi pour but de fournir une chaussure qui permet de réduire les frottements du pied de l'utilisateur relativement à la tige entourant le pied, notamment dans sa partie arrière, malgré l'élasticité de la semelle.The invention also aims to provide a shoe which makes it possible to reduce the friction of the user's foot relative to the upper surrounding the foot, in particular in its rear part, despite the elasticity of the sole.
L'invention vise également à fournir une chaussure dans laquelle on puisse mettre en place un ressort d'un type particulier propre à remplir son rôle d'amortisseur sur une course élastique verticale réduite d'environ 6 à 7 mm.The invention also aims to provide a shoe in which one can put in place a spring of a particular type capable of fulfilling its role of shock absorber over a reduced vertical elastic stroke of approximately 6 to 7 mm.
L'invention vise aussi à fournir une chaussure dont la réalisation soit simple et dont les moyens élastiques peuvent être incorporés dans une cassette propre à être glissée dans la semelle de la chaussure.The invention also aims to provide a shoe, the production of which is simple and the elastic means of which can be incorporated in a cassette capable of being slid into the sole of the shoe.
Selon l'invention, une chaussure du genre défini précédemment est caractérisée par le fait que les bras du ressort ont sensiblement la même dimension radiale, que l'angle entre les bras du ressort, dans la position de repos, est d'environ 60°, l'angle entre un bras et la verticale étant d'environ 30°, et que les extrémités des bras sont en appui glissant contre ladite autre plaque, des moyens étant en outre prévus pour maintenir le ressort relativement à la plaque selon la direction longitudinale et dans la position où l'axe des enroulements est transversal.According to the invention, a shoe of the kind defined above is characterized in that the arms of the spring have substantially the same radial dimension, that the angle between the arms of the spring, in the rest position, is approximately 60 °. , the angle between an arm and the vertical being approximately 30 °, and the ends of the arms are in sliding contact against said other plate, means being further provided for holding the spring relative to the plate in the longitudinal direction and in the position where the axis of the windings is transverse.
Avantageusement, le ressort comporte deux enroulements en sens inverse coaxiaux, séparés l'un de l'autre par un espace libre, les bras d'extrémité situés axialement vers l'extérieur de ces enroulements étant reliés par une branche parallèle à l'axe des ressorts. Les bras situés vers l'intérieur sont recourbés vers l'extérieur à leurs extrémités.Advantageously, the spring comprises two coaxial windings in opposite directions, separated from each other by a free space, the end arms located axially towards the outside of these windings being connected by a branch parallel to the axis of the springs. The inward arms are bent outward at their ends.
Une rainure transversale à profil circulaire concave vient épouser une partie de la surface cylindrique des enroulements, pour maintenir le ressort.A transverse groove with a concave circular profile follows a part of the cylindrical surface of the windings, to hold the spring.
Avantageusement, la hauteur du ressort est de 18 mm environ lorsqu'il n'est pas soumis à une charge et il est agencé pour que, dès le premier millimètre de diminution de la hauteur hors tout du ressort, la charge subie par ce ressort soit environ 35 daN.Advantageously, the height of the spring is approximately 18 mm when it is not subjected to a load and it is arranged so that, from the first millimeter of reduction in the overall height of the spring, the load undergone by this spring is about 35 daN.
La course élastique verticale du ressort est d'environ 6 ou 7 mm, la charge initiale ayant alors seulement doublé.The vertical elastic stroke of the spring is approximately 6 or 7 mm, the initial load then only having doubled.
De préférence, la chaussure comprend une cassette de forme prismatique triangulaire constituée par un dièdre réalisé avec deux plaques rigides articulées selon l'arête , le ressort étant disposé entre les faces de ce dièdre, cette cassette prismatique étant glissée entre une partie de semelle supérieure et une partie de semelle inférieure de la chaussure, les parties de semelle étant reliées à leur périphérie par une sorte de soufflet acceptant les variations de hauteur de la cassette prismatique.Preferably, the shoe comprises a cassette of triangular prismatic shape constituted by a dihedron produced with two rigid plates articulated along the edge, the spring being disposed between the faces of this dihedron, this prismatic cassette being slid between an upper sole part and a bottom sole part of the shoe, the sole parts being connected at their periphery by a sort of bellows accepting variations in height of the prismatic cassette.
L'arête de la cassette se trouve, avantageusement, sensiblement au niveau du métatarse du pied de l'utilisateur, tandis que le ressort de la cassette se trouve sous la région du talon.The edge of the cassette is advantageously located substantially at the level of the metatarsus of the user's foot, while the spring of the cassette is located under the heel region.
Une cassette peut aussi être située en avant du métatarse du pied de l'utilisateur, l'arête de la cassette se trouvant légèrement en avant du métatarse du pied, tandis que le ressort de la cassette se trouve sous la pointe de la chaussure.A cassette can also be located in front of the metatarsus of the user's foot, the edge of the cassette being slightly in front of the metatarsus of the foot, while the spring of the cassette is located under the toe of the shoe.
La chaussure peut comporter deux cassettes disposées en sens contraire l'une à l'avant, l'autre à l'arrière, la cassette avant ayant des dimensions plus petites que celles de la cassette arrière.The shoe may include two cassettes arranged in opposite directions, one at the front, the other at the rear, the front cassette having dimensions smaller than those of the rear cassette.
La plaque supérieure et la plaque inférieure peuvent avoir des sections transversales en U tournant leur concavité l'une vers l'autre, et dont les ailes s'emboîtent pour assurer une tenue latérale relative des deux plaques.The upper plate and the lower plate may have U-shaped cross sections turning their concavity towards each other, and the wings of which fit together to ensure relative lateral holding of the two plates.
La plaque supérieure est rigide et est entièrement située en arrière d'une ligne transversale destinée à se trouver sous le métatarse du pied de l'utilisateur ; la semelle présente une zone d'articulation transversale au niveau de cette ligne de sorte que l'angle formé entre le plan de la plaque supérieure rigide et la partie de la semelle située en avant de la zone d'articulation peut varier ; les parois de la tige de la chaussure qui entourent le pied de l'utilisateur sont fixées, à leur partie inférieure, à la plaque supérieure rigide ; le(s) ressort(s) est (sont) situé(s) sous la seule zone de la plaque rigide destinée à se trouver sous le talon de l'utilisateur, l'ensemble étant tel que les variations de la charge appliquée au ressort entraînent un mouvement d'oscillation de la plaque supérieure rigide autour de la ligne transversale d'articulation, relativement à la plaque inférieure.The upper plate is rigid and is entirely located behind a transverse line intended to be located under the metatarsus of the user's foot; the sole has a transverse articulation zone at this line so that the angle formed between the plane of the rigid upper plate and the part of the sole located in front of the articulation zone can vary; the walls of the upper of the shoe which surround the foot of the user are fixed, at their lower part, to the rigid upper plate; the spring (s) is (are) located under the single zone of the rigid plate intended to be located under the heel of the user, the assembly being such that the variations of the load applied to the spring cause an oscillating movement of the rigid upper plate around the transverse line of articulation, relative to the lower plate.
De préférence, la plaque supérieure rigide s'étend jusqu'à la ligne transversale d'articulation, qui constitue sa limite avant.Preferably, the rigid upper plate extends to the transverse line of articulation, which constitutes its front limit.
Une couche de matière plus souple peut être prévue sous la surface inférieure de cette plaque inférieure rigide, pour entrer en contact avec le sol.A layer of softer material may be provided under the lower surface of this rigid lower plate, to come into contact with the ground.
La plaque supérieure rigide peut avoir une surface limitée à celle du talon de la chaussure, tandis que la plaque inférieure a des dimensions semblables et est montée avec au moins une liberté en translation sensiblement verticale, relativement à la plaque supérieureThe rigid upper plate may have a surface limited to that of the heel of the shoe, while the lower plate has similar dimensions and is mounted with at least substantially vertical freedom in translation, relative to the upper plate
Avantageusement, le ressort est agencé pour donner, dès le début de la compression, une charge élevée, qui ne fait ensuite que doubler, après une course de compression d'environ 6 ou 7 mm, de façon à réaliser un bon amortissement des chocs.Advantageously, the spring is arranged to give, from the start of compression, a high load, which then only doubles, after a compression stroke of about 6 or 7 mm, so as to achieve good shock absorption.
De préférence, la cassette a une forme prismatique triangulaire constituée par un dièdre réalisée avec deux plaques rigides articulées selon l'arête autour d'un axe transversal, un ressort étant disposé entre les faces de ce dièdre ; cette cassette est destinée à être glissée entre une partie de semelle supérieure et une partie de semelle inférieure de la chaussure, la longueur de la cassette étant telle que l'axe d'articulation se trouve, en utilisation normale de la chaussure, sensiblement sous le métatarse du pied de l'utilisateur, tandis que le ressort se trouve sensiblement à la verticale du talon de l'utilisateur.Preferably, the cassette has a triangular prismatic shape constituted by a dihedron produced with two rigid plates articulated along the edge around a transverse axis, a spring being disposed between the faces of this dihedron; this cassette is intended to be slid between an upper sole part and a lower sole part of the shoe, the length of the cassette being such that the axis of articulation is, in normal use of the shoe, substantially under the metatarsus of the user's foot, while the spring is located substantially vertical to the user's heel.
Le ressort comprend au moins un enroulement muni à chacune de ses extrémités d'un bras radial de prolongement, les deux bras radiaux extrêmes ayant sensiblement la même dimension radiale et formant entre eux un angle d'environ 60°, et il comporte deux enroulements en sens inverse coaxiaux, séparés l'un de l'autre par un espace libre, les bras d'extrémité situés axialement vers l'extérieur de ces enroulements étant reliés par une branche parallèle à l'axe des ressorts, l'enroulement étant destiné à être disposé en appui extérieurement contre une plaque, tandis que les extrémités des bras sont destinées à venir en appui glissant contre une autre plaque, l'enroulement pouvant se rapprocher ou s'écarter de la plaque dont il est éloigné suivant une direction sensiblement orthogonale à cette plaque, tandis que l'écart angulaire entre les bras augmente ou diminue, sous l'effet de la charge.The spring comprises at least one winding provided at each of its ends with a radial extension arm, the two extreme radial arms having substantially the same radial dimension and forming between them an angle of approximately 60 °, and it comprises two windings in opposite direction coaxial, separated from each other by a free space, the end arms located axially towards the outside of these windings being connected by a branch parallel to the axis of the springs, the winding being intended to be disposed in external support against a plate, while the ends of the arms are intended to come into sliding contact against another plate, the winding being able to approach or move away from the plate from which it is distant in a direction substantially orthogonal to this plate, while the angular difference between the arms increases or decreases, under the effect of the load.
L'invention peut comprendre, dans le cadre des revendications, mises à part les dispositions exposées ci-dessus, un certain nombre d'autres dispositions dont il sera plus explicitement question ci-après à propos d'exemples de réalisation décrits avec référence aux dessins ci-annexés, mais qui ne sont nullement limitatifs.The invention may include, within the scope of the claims, apart from the provisions set out above, a certain number of other provisions which will be more explicitly discussed below in connection with exemplary embodiments described with reference to the drawings attached, but which are in no way limiting.
La figure 1, de ces dessins, est une vue schématique en coupe longitudinale, avec parties en extérieur, d'une chaussure conforme à l'invention.Figure 1 of these drawings is a schematic view in longitudinal section, with parts outside, of a shoe according to the invention.
La figure 2 est une vue en perspective, à plus grande échelle, du ressort disposé dans la semelle de la chaussure de la figure 1.FIG. 2 is a perspective view, on a larger scale, of the spring disposed in the sole of the shoe of FIG. 1.
La figure 3 est une vue en élévation, à plus grande échelle, du ressort selon l'invention.Figure 3 is an elevational view, on a larger scale, of the spring according to the invention.
La figure 4 montre le ressort de la figure 3 dans sa position d'écrasement.Figure 4 shows the spring of Figure 3 in its crushed position.
La figure 5 est une vue schématique en perspective d'une cassette destinée à être introduite dans la semelle d'une chaussure.Figure 5 is a schematic perspective view of a cassette intended to be introduced into the sole of a shoe.
La figure 6 est une coupe transversale de la semelle au niveau du talon d'une chaussure selon l'invention.Figure 6 is a cross section of the sole at the heel of a shoe according to the invention.
La figure 7, est une vue de côté avec parties en coupe d'une chaussure type chaussure de ville selon l'invention.Figure 7 is a side view with parts in section of a shoe type city shoe according to the invention.
La figure 8 est une vue schématique en perspective d'un détail de la chaussure de la figure 6, à plus grande échelle.Figure 8 is a schematic perspective view of a detail of the shoe of Figure 6, on a larger scale.
La figure 9 montre, semblablement à la figure 7, une variante de réalisation d'une chaussure de ville.Figure 9 shows, similarly to Figure 7, an alternative embodiment of a city shoe.
La figure 10 montre, semblablement à la figure 9, une autre variante de chaussure de ville.Figure 10 shows, similarly to Figure 9, another variant of a city shoe.
La figure 11 est une coupe verticale longitudinale du talon d'une autre variante de chaussure de ville.Figure 11 is a longitudinal vertical section of the heel of another variant of a city shoe.
La figure 12 est une coupe horizontale, vue de dessus, du talon de la figure 11.FIG. 12 is a horizontal section, seen from above, of the heel of FIG. 11.
La figure 13, enfin, est une vue schématique de côté d'une autre variante de réalisation de chaussure.Figure 13, finally, is a schematic side view of another alternative embodiment of the shoe.
Avant de décrire la chaussure représentée à la figure 1, il semble utile de formuler quelques observations.Before describing the shoe shown in Figure 1, it seems useful to make a few comments.
Pour amortir les chocs du talon d'une chaussure sur le sol, chocs qui se répercutent sur les chevilles, genoux et hanches, il est apparu souhaitable d'obtenir de la chaussure une course élastique suffisante à l'endroit du talon.To absorb the shocks of the heel of a shoe on the ground, shocks which have repercussions on the ankles, knees and hips, it appeared desirable to obtain from the shoe a sufficient elastic stroke at the location of the heel.
On peut classer les types de contacts de la chaussure avec le sol en trois catégories principales :
- dans la marche à grandes enjambées, tout le poids du corps repose sur le talon ; la zone du métatarse du pied de l'utilisateur ne touche le sol qu'un moment après que le talon est entré en contact avec le sol ;
- dans la marche à petits pas, on peut considérer que le pied touche le sol à plat ; le métatarse et le talon se posent pratiquement en même temps avec prédominance du poids du corps sur le talon ;
- lors de la course à pied, il est recommandé de faire venir la partie avant du pied la première en contact avec le sol, puis le pied se déroule avec un léger retour à plat assurant une répartition des efforts et diminuant la fatigue.
- in walking with long strides, the whole weight of the body rests on the heel; the metatarsal area of the user's foot does not touch the ground until a moment after the heel has come into contact with the ground;
- in walking with small steps, we can consider that the foot touches the ground flat; the metatarsus and the heel arise practically at the same time with predominance of the weight of the body on the heel;
- when running, it is recommended to bring the front part of the foot first into contact with the ground, then the foot unrolls with a slight flat return ensuring a distribution of efforts and reducing fatigue.
En vue d'amortir au mieux les chocs du talon sur le sol pour les différents types de contacts mentionnés ci-dessus, comme visible sur la figure 1, une chaussure C, selon l'invention, comporte un ressort R disposé dans la semelle 1 entre une plaque supérieure 2 s'étendant jusqu'à la partie arrière de la chaussure, et en particulier sous le talon du pied F de l'utilisateur, et une plaque inférieure 3. Les plaques 2 et 3 forment un angle O entre elles.In order to best absorb the impact of the heel on the ground for the different types of contact mentioned above, as visible in FIG. 1, a shoe C, according to the invention, includes a spring R placed in the sole 1 between an
La plaque supérieure 2 est rigide, par exemple en matière plastique rigide, ayant un faible coefficient de frottement. Cette plaque 2 est située en arrière d'une limite avant transversale L, constituée par une ligne perpendiculaire au plan de la figure 1, située dans la zone destinée à se trouver sous le métatarse 4 du pied de l'utilisateur. Dans l'exemple de réalisation de la figure 1, la plaque supérieure rigide 2 s'étend jusqu'à la limite L qui constitue son bord avant transversal.The
Une zone d'articulation transversale 5 est prévue, suivant la limite L, entre la plaque 2 et la partie avant 6 de la semelle de la chaussure qui peut être identique à la structure habituelle. Dans l'exemple de réalisation de la figure 1, la plaque inférieure 3 est également rigide et s'étend jusqu'à la limite L. L'articulation 5 peut comprendre un axe transversal 7, par exemple métallique, engagé dans des paliers formés par des oreilles prévues sur les bords latéraux des plaques 2 et 3. En outre, la liaison entre la plaque 2 et la partie avant 6 de la semelle est assurée par une bande flexible 8. La plaque 3 est liée à la partie avant 6, de préférence également par une zone flexible.A transverse articulation zone 5 is provided, along the limit L, between the
La tige 9 de la chaussure, qui enveloppe le pied F de l'utilisateur, a ses bord inférieurs fixés sur la périphérie de la plaque 2 et, vers l'avant, sur le bord supérieur de la partie 6.The upper 9 of the shoe, which envelops the foot F of the user, has its lower edges fixed on the periphery of the
L'ensemble de la plaque 2 et de la partie avant 6 de la semelle est recouvert par une semelle interne 10 d'épaisseur réduite, relativement molle, s'étendant sur toute la longueur de la chaussure, de sorte que le pied de l'utilisateur ne ressente pas les aspérités éventuelles des zones de jonction.The assembly of the
Le ressort R est du type ressort de torsion 11 ; il est disposé, sensiblement à la verticale du talon de l'utilisateur, entre la plaque supérieure rigide 2 et la plaque inférieure 3 proche du sol.The spring R is of the
Comme mieux visible sur la figure 2, le ressort 11 comprend deux enroulements 12, 13 coaxiaux, en sens inverse, séparés l'un de l'autre par un espace libre 14.As best seen in FIG. 2, the
Chaque enroulement 12, 13 comporte des bras d'extrémité radiaux 12a, 12b, 13a, 13b formant entre eux un angle A, et sensiblement de même longueur.Each winding 12, 13 comprises
Les bras 12b, 13b sont situés aux extrémités extérieures des ressorts 12, 13 et sont parallèles entre eux tandis que les bras 12a, 13a sont situés aux extrémités intérieures des enroulements 12, 13, ces deux bras étant également parallèles. Les bras extérieurs 12b, 13b sont reliés, à leurs extrémités radiales extérieures, par une branche 15 parallèle à l'axe des enroulements.The
Les bras 12a, 13a situés vers l'intérieur sont recourbés vers l'extérieur, à leurs extrémités radiales, selon des pattes 16a, 16b.The
Le ressort 11 est disposé de manière que les enroulements 12, 13 soient en appui extérieurement contre l'une des plaques, sensiblement suivant une génératrice. Dans l'exemple considéré, les enroulements 12, 13 sont en appui contre la plaque supérieure 2, tandis que la branche 15 et les pattes 16a, 16b sont en appui contre la plaque inférieure 3. La branche 15 et les pattes 16a, 16b sont en appui glissant contre cette plaque 3, laquelle est réalisée en une matière à faible frottement.The
Des moyens sont prévus pour maintenir le ressort 11 relativement à la plaque 2 selon la direction longitudinale et dans la position où l'axe des enroulements est transversal. Ces moyens peuvent être constitués par une rainure transversale 17 à profil circulaire concave qui vient épouser une partie de la surface cylindrique des enroulements 12 et 13. Le ressort 11 est maintenu légèrement comprimé entre les plaques 2 et 3.Means are provided for holding the
Bien entendu, d'autres moyens de maintien du ressort peuvent être prévus ; il suffit que ces moyens ne gênent pas le débattement angulaire des branches 12a, 12b et 13a, 13b lorsqu'une charge est appliquée sur la plaque 2 et provoque l'écrasement du ressort 11.Of course, other means for holding the spring can be provided; these means need not interfere with the angular movement of the
L'espace 18 situé entre les plaques 2 et 3 et compris entre la zone d'articulation 5 et le ressort 11 est libre de toute matière de telle sorte que la plaque 2 peut débattre angulairement, relativement à la plaque 3, par oscillation autour de la zone d'articulation 5 lors des variations de la hauteur utile H du ressort. Cette hauteur utile H, comme visible sur la figure 3, est égale à la distance entre le plan d'appui de la branche 15 et des pattes 16a, 16b et le plan parallèle à ce plan d'appui tangent extérieurement aux enroulements 12, 13. Bien entendu, l'espace 18a situé en arrière du ressort 11 est aussi libre de toute matière.The
Avantageusement, la hauteur H est d'environ 18 mm lorsque le ressort 11 n'est soumis à aucune charge et le ressort 11 est agencé pour que, dès le premier millimètre de diminution de la hauteur H, la charge subie, et donc la réaction exercée par ce ressort, est d'environ 35 daN. Le ressort 11 est en outre agencé de manière que la course élastique verticale, c'est-à-dire la diminution de hauteur H soit d'environ 6 ou 7 mm pour le doublement de la charge verticale qui a provoqué le premier millimètre de diminution de hauteur. L'angle A est choisi avantageusement voisin de 60° au repos de telle sorte que l'angle entre un bras radial extême 12a, 13a ou 12b, 13b et la verticale est d'environ 30° (
Comme visible sur la figure 3, les forces de réaction qui s'exercent sur la branche 15 et sur les pattes 16a, 16b en réponse à une charge verticale V appliquée sur les enroulements, créent un moment de torsion sur lesdits enroulements dont l'amplitude dépend du bras de levier d égal à la distance entre la zone d'appui des bras sur la plaque 3, et la verticale passant par l'axe des enroulements 12, 13.As can be seen in FIG. 3, the reaction forces exerted on the
La longueur du bras de levier d est sensiblement proportionnel à
Le bras de levier d augmente lorsque l'écrasement du ressort se produit, en même temps que l'action des enroulements 12, 13 augmente du fait de l'augmentation de la torsion. Cette augmentation de la longueur du bras de levier d vient atténuer l'augmentation de l'action des enroulements.The lever arm d increases when the compression of the spring occurs, at the same time as the action of the
Avec des enroulements d'un diamètre extérieur de 10 mm et une hauteur H initiale de 18 mm, le bras de levier d double pratiquement en 6 mm de compression, pour un angle
Les contours extérieurs des plaques 2 et 3 sont reliées par une paroi flexible 19, semblable à la paroi d'un soufflet, propre à absorber les mouvements d'oscillation de la plaque 2 relativement à la plaque 3.The outer contours of the
La plaque inférieure 3 peut être munie sur sa surface inférieure d'une couche 20 en matière plus molle, qui s'étend également sous la partie avant 6 de la chaussure de manière à ne constituer qu'une seule nappe.The
Comme visible sur la figure 6, les plaques 2 et 3 ont, de préférence, une section transversale en U tournant leur concavité l'une vers l'autre. La concavité de la section de la plaque supérieure 2 est tournée vers le bas et les ailes 21, 22 de cette section, sensiblement verticales, sont engagées entre les ailes 23, 24, tournées vers le haut de la plaque inférieure 3. Même lorsque le ressort 11 n'est pas sollicité, le bord inférieur des ailes 21, 22 se trouve au-dessous du bord supérieur des ailes 23, 24. Ainsi, dans toutes les conditions de fonctionnement, une bonne tenue latérale est assurée entre les plaques 2 et 3 par coopération des ailes 21, 22 et des ailes 23, 24, le jeu entre ces ailes étant réduit.As visible in FIG. 6, the
Le fonctionnement de la chaussure de l'invention résulte immédiatement des explications qui précèdent.The operation of the shoe of the invention immediately results from the foregoing explanations.
Le ressort 11 est taré de manière à absorber, tout au début de sa course, par exemple dans le premier millimètre de diminution de la hauteur utile H, une charge correspondant sensiblement à la moitié du poids de l'utilisateur.The
Lors de la marche ou de la course de l'utilisateur, il y a transfert de charge, d'un pied sur l'autre. Le ressort 11, associé au pied sur lequel la charge est transférée va s'écraser de manière à absorber cette charge ; la plaque 2 ainsi que la semelle intérieure 10 vont osciller autour de l'axe d'articulation transversal 5, l'angle O diminuant.When the user walks or runs, there is a transfer of load from one foot to the other. The
Lorsque la charge sur le pied considéré diminue, le ressort 1 restitue l'énergie absorbée et revient vers sa position de repos.When the load on the foot considered decreases, the
Il est à noter que la tige 9, par son bord inférieur, suit les mouvements de la plaque 2 et que le pied F de l'utilisateur est parfaitement enfermé dans la chaussure et fait corps avec la tige 9, la semelle interne 10 et la plaque 2. Il en résulte qu'au cours des mouvements de la plaque 2, il n'y a pas de déplacement relatif entre le pied F de l'utilisateur et la tige 9, ce qui supprime pratiquement tout frottement.It should be noted that the upper 9, by its lower edge, follows the movements of the
Il n'en serait pas de même si l'élasticité verticale était réalisée à l'intérieur de la chaussure ce qui entraînerait un frottement de haut en bas et de bas en haut entre le pied de l'utilisateur, et plus particulièrement le talon, et la partie intérieure de la tige 9 de la chaussure.It would not be the same if the vertical elasticity was achieved inside the shoe which would cause friction from top to bottom and from bottom to top between the foot of the user, and more particularly the heel, and the inner part of the upper 9 of the shoe.
En outre, selon l'invention, le serrage du pied dans la chaussure par laçage, ou moyen équivalent, reste le même au cours des déplacements verticaux du pied, alors que dans une chaussure où l'élasticité verticale est réalisée à l'intérieur de la chaussure, le serrage du pied, notamment par laçage, varie constamment.Furthermore, according to the invention, the tightening of the foot in the shoe by lacing, or equivalent means, remains the same during the vertical movements of the foot, while in a shoe where the vertical elasticity is produced inside the shoe, the tightening of the foot, in particular by lacing, varies constantly.
Selon l'invention, le mouvement d'articulation du pied s'effectue autour de la zone du métatarse qui correspond à la zone naturelle d'articulation du pied, l'espace libre 18 de la semelle permettant à la plaque 2 d'osciller en bloc.According to the invention, the movement of articulation of the foot takes place around the area of the metatarsus which corresponds to the natural area of articulation of the foot, the
L'agencement particulier du ressort 11 du type ressort de torsion, travaillant par diminution de sa hauteur utile en raison de l'écartement de ses bras d'extrémité radiaux, est important.The particular arrangement of the
Du fait que la charge, dès le premier millimètre de compression, en direction du sol est à peu près égale à la moitié du poids du corps de l'utilisateur, ce dernier sera supporté sans "mou" vertical lorsque le poids de son corps sera également réparti sur les deux pieds, en station arrêtée. Cette charge élevée du ressort, dès le début du mouvement de compression, est déterminante pour permettre au ressort d'assurer un important retour d'énergie.Because the load, from the first millimeter of compression, towards the ground is approximately equal to half the weight of the user's body, the latter will be supported without vertical "softness" when the weight of his body is equally distributed on both feet, in station stopped. This high load of the spring, from the start of the compression movement, is decisive for allowing the spring to provide a significant return of energy.
Malgré cette charge élevée, dès le départ, le ressort n'atteint, après 6 mm de diminution de la hauteur utile H que le double de la charge initiale.Despite this high load, from the start, the spring only reaches, after 6 mm reduction in the working height H, twice the initial load.
Dans un ressort de compression classique, la charge atteinte après 6 mm d'écrasement serait égale sensiblement à six fois la charge obtenue après 1 mm d'écrasement.In a conventional compression spring, the load reached after 6 mm of crushing would be substantially equal to six times the load obtained after 1 mm of crushing.
En outre, le ressort de torsion 11 de l'invention, à double enroulement, occupe presque toute la largeur du talon de la chaussure ce qui contribue à une bonne stabilité latérale, l'axe de l'enroulement étant placé horizontalement. Dans le cas de ressorts de compression classiques, il faudrait plusieurs ressorts.In addition, the
On peut noter par ailleurs que les chaussures qui prévoient comme moyens d'amortissement au talon, des matières souples, du type matière élastomère ou équivalent, sont très molles au début de l'écrasement, d'où un manque de stabilité latérale, et durcissent ensuite très vite en fin d'écrasement.It can also be noted that the shoes which provide, as means of cushioning in the heel, flexible materials, of the elastomer or equivalent material type, are very soft at the start of the crushing, hence a lack of lateral stability, and harden then very quickly at the end of the crushing.
Pour la marche et la course, étant donné l'enroulement rapide talon/pied à plat/avant du pied ou avant du pied/pied à plat/ talon, les duretés du ressort 11 doivent être bien adaptées mais pas trop fortes, car l'amortissement doit se faire très progressivement, sans rencontrer de points durs. Avec des ressorts dont le diamètre extérieur des enroulements était de 10 mm, la hauteur utile H au repos de 19 mm et les bras ouverts à 30° (
Pour les sports dans lesquels interviennent des sauts relativement fréquents, on peut prévoir des ressorts plus durs.For sports in which relatively frequent jumps are involved, harder springs can be provided.
En se reportant à la figure 5, on voit que le ressort 11 peut être disposé dans une cassette 25, sensiblement en forme de prisme triangulaire ou de coin, constituée par un dièdre réalisé avec deux plaques 102, 103 rigides. Les plaques 102, 103 forment les faces d'un dièdre et sont articulées selon l'arête du dièdre autour d'un axe transversal 7, constitué par exemple par une tige métallique 26.Referring to FIG. 5, it can be seen that the
L'axe 26 est destiné à se trouver sensiblement sous le métatarse 4 du pied de l'utilisateur, tandis que le ressort 11 est disposé entre les faces 102, 103 du dièdre vers l'arrière où il est maintenu par tout moyen approprié.The
Plus précisément, la plaque supérieure 102 a une section transversale en U tournant sa concavité vers le bas, comme représenté sur la figure 6, et comportant des ailes latérales 104, 105 s'étendant vers le bas, sensiblement dans un plan vertical.More specifically, the
La plaque inférieure 103 a également une section transversale en U tournant sa concavité vers le haut et limitée, sur les côtés, par des ailes latérales verticales 106, 107 situées à l'intérieur des ailes 104, 105, avec un jeu réduit. . La coopération entre les ailes latérales des plaques 102 et 103 assure un maintien transversal d'une plaque relativement à l'autre.The
Comme visible sur la figure 5, les ailes latérales 104, 105 de la plaque supérieure comportent, à leur extrémité avant, une oreille telle que 27 encadrant une échancrure prévue dans le bord avant de la plaque supérieure 102. Chaque oreille 27 comporte un trou servant de palier aux extrémités de l'axe 26.As visible in FIG. 5, the
La plaque inférieure 103 comporte un manchon cylindrique 28 formant son bord transversal avant, disposé entre les oreilles 27. Ce manchon 28 comporte un alésage central traversé par l'axe 26.The
Une patte de retenue 29 est prévue à l'arrière de la plaque 103 pour coopérer avec une butée prévue sur la face arrière de la plaque 102 et maintenir la cassette 25 fermée au repos, le ressort 11 étant précontraint de 1 mm. L'ensemble est tel que même lorsque la cassette n'est pas sollicitée par une charge, les parois latérales 104, 105 et 106, 107 se recouvrent suivant une plage.A retaining
Les plaques 102 et 103 sont réalisées en une matière plastique rigide, à coefficient de frottement réduit.The
L'espace 118 situé entre l'axe 26 et le ressort 11 de la cassette 25 est libre de matière comme l'espace 18 de la figure 1.The
Cette cassette 25 est destinée à être glissée, à la manière d'un coin, entre une partie de semelle supérieure et une partie de semelle inférieure d'une chaussure, les parties de semelle supérieure et inférieure présentant une zone flexible au niveau du métatarse du pied de l'utilisateur, zone dans laquelle va se trouver l'axe d'articulation 26 de la cassette. Les parties de semelle inférieure et supérieure de la chaussure sont reliées à leur périphérie par une sorte de soufflet semblable au soufflet 19 de la figure 1. La fixation de ce soufflet sur les bords externes des parties de semelle inférieure et supérieure peut être prévue de manière amovible de sorte que la cassette 25 puisse être remplacée par une autre cassette du même type mais dont le ressort présente une rigidité différente. En variante, la cassette peut être mise en place par dessous ou par l'intérieur de la chaussure.This
Ce changement de cassette permet d'adapter au mieux la chaussure aux exigences d'utilisation selon que la chaussure servira par exemple, tel jour à une marche ou tel autre jour à un parcours impliquant des sauts relativement fréquents.This change of cassette makes it possible to best adapt the shoe to the requirements of use depending on whether the shoe will be used, for example, on a particular day for a walk or on another day for a course involving relatively frequent jumps.
Bien entendu, la tige 9 de la chaussure a son bord inférieur fixé sur la partie de semelle supérieure de sorte que lors des mouvements d'écrasement du ressort, il n'y ait aucun mouvement relatif entre la tige 9 et le pied de l'utilisateur.Of course, the upper 9 of the shoe has its lower edge fixed on the upper sole part so that during the crushing movements of the spring, there is no relative movement between the upper 9 and the foot of the user.
La partie de semelle supérieure peut comprendre la plaque 2 décrite à propos des figures 1 à 3, et qui est représentée sur la figure 6, tandis que la partie de semelle inférieure peut comprendre la plaque 3, également représentée sur la figure 6. Les faces externes des ailes 104 et 105 de la plaque 102 de la cassette sont, pratiquement, au contact des faces internes des ailes 21, 22 de la plaque 2.The upper sole part can comprise the
Du fait que les plaques 102, 103 de la cassette sont rigides, on peut toutefois supprimer les plaques 2 et 3 rigides de la semelle de la chaussure ; dans un tel cas, la partie de semelle supérieure et la partie de semelle inférieure sont réalisées entièrement en une matière souple.Due to the fact that the
Une chaussure équipée d'une telle cassette fonctionne comme expliqué précédemment, et présente les mêmes avantages que ceux évoqués à propos des figures 1 à 3.A shoe fitted with such a cassette works as explained above, and has the same advantages as those mentioned in connection with FIGS. 1 to 3.
La description donnée jusqu'à présent concerne plutôt une chaussure de sport telle que chaussure pour la marche, la course à pied ou le tennis, dont la surface inférieure de la semelle est pratiquement plate, sans proéminence au niveau du talon.The description given so far rather relates to a sports shoe such as a shoe for walking, running or tennis, the lower surface of the sole of which is practically flat, without prominence at the heel.
Comme illustré sur la figure 7, une chaussure C conforme à l'invention, peut être du type chaussure de ville avec un talon 30 proéminent, faisant saillie vers le bas alors que la semelle 201, flexible notamment dans la zone 205 située sous le métatarse de l'utilisateur, s'écarte du sol à partir de cette zone pour venir au niveau supérieur du talon à sa partie arrière. Il existe donc un espace libre 218 entre la zone d'articulation 205 et le talon.As illustrated in FIG. 7, a shoe C according to the invention, can be of the city shoe type with a
Dans le cas de la figure 7, la plaque supérieure rigide 202 a une surface limitée sensiblement à celle du talon. Elle s'étend jusqu'à l'arrière de la chaussure mais, vers l'avant, est limitée par un bord transversal 31 situé en arrière de la zone d'articulation 205.In the case of FIG. 7, the rigid upper plate 202 has an area limited substantially to that of the heel. It extends to the rear of the shoe but, towards the front, is limited by a
La plaque 202 comporte, à sa périphérie, une paroi sensiblement verticale 222 s'étendant vers le bas. La plaque inférieure 203 est également rigide et est montée avec une possibilité de translation verticale relativement à la plaque 202. Un maintien latéral et un guidage vertical est assuré entre les plaques 202 et 203 grâce à des parois verticales 224 prévues sur les bords de la plaque 203, et s'étendant vers le haut, qui coopèrent avec la paroi 222.The plate 202 has, at its periphery, a substantially
La liaison entre la plaque supérieure 202 et la plaque inférieure 203 peut être assurée par des pions transversaux 32 (figure 8) faisant saillie transversalement vers l'intérieur, à partir des parois latérales 224, ces pions 32 étant engagés dans des ouvertures oblongues verticales 33 prévues dans la paroi 222 de la plaque 202. Les pions 32 permettent ainsi une oscillation relative entre les plaques 202 et 203 autour d'un axe transversal et, en outre, un déplacement en translation sensiblement verticale entre ces plaques.The connection between the upper plate 202 and the
Le ressort 11 est disposé entre la plaque 202 et la plaque 203, sensiblement à la verticale du talon de l'utilisateur, ce ressort 11 étant maintenu par tout moyen approprié.The
Les plaques 202, 203, lorsque la chaussure n'est pas sollicitée, sont écartées au maximum par le ressort 11, les pions 32 étant en butée contre l'extrémité inférieure des ouvertures 33.The
Les parois 222 et 224 sont agencées pour laisser une liberté en translation verticale suffisante tout en restant engagées les unes dans les autres lorsqu'aucune charge n'est exercée sur le talon de la chaussure.The
Le fonctionnement d'une chaussure conforme à la figure 7 est semblable à celui décrit à propos des figures précédentes.The operation of a shoe according to Figure 7 is similar to that described with reference to the previous figures.
La figure 9 montre une variante de réalisation de la chaussure de ville de la figure 7. La plaque supérieure rigide 302 est limitée par un rebord 331 qui vient entourer un rebord 34 de la plaque inférieure 303. Les rebords 331 et 34, dans leur partie transversale, ont une forme incurvée, cylindrique dont l'axe horizontal est situé au voisinage de la zone de flexion 305 de la semelle. Le ressort 11 est logé entre les plaques 302, 303, dont l'étendue est limitée à la zone du talon. On retrouve un espace libre 318 entre la zone 305 et le talon, pour que le pied ne soit pas en contact trop important sur l'avant de la cassette. Une sorte de soufflet 319 entoure l'ensemble des plaques 302, 303.FIG. 9 shows an alternative embodiment of the city shoe of FIG. 7. The rigid
La figure 10 illustre une variante de chaussure de ville comportant, logée dans le talon, une cassette 425, semblable à la cassette de la figure 5, mais de longueur plus réduite. L'axe d'articulation 426 est situé dans la zone du bord avant du talon, le ressort 11 se trouvant vers l'arrière. La cassette 425 est disposée entre une plaque supérieure 402 et une plaque inférieure 403 rigides. L'ensemble est entouré d'une sorte de soufflet 419. On retrouve la zone de flexion 405 au niveau du métatarse et l'espace libre 418.FIG. 10 illustrates a variant of a city shoe comprising, housed in the heel, a
Les figures 11 et 12 illustrent une autre variante de réalisation du talon d'une chaussure.Figures 11 and 12 illustrate another alternative embodiment of the heel of a shoe.
La plaque supérieure rigide 502 est placée contre la paroi supérieure 35 d'une enveloppe 36 solidaire de la semelle et comportant une paroi périphérique verticale 37 dirigée vers le bas. La plaque 502 est munie d'un rebord vertical 531 sur son contour, à l'exception de son bord transversal avant.The rigid
La plaque inférieure 503, rigide, en matière dure comme la plaque 502, forme une sorte de couvercle renversé avec son rebord 534 tourné vers le haut, situé à l'intérieur de la paroi 37 et du rebord 531. La plaque 503 peut se déplacer, sensiblement verticalement, relativement à la plaque 502. Un téton 38 est prévu en saillie de chaque côté, à l'avant et en haut des partie longitudinales du rebord 534. Chaque téton 38 est reçu dans une rainure verticale 39 prévue sur la paroi interne du rebord 534, et fermée vers le bas. La plaque 503 comporte à l'arrière, en haut de son rebord, un ergot 40 en saillie vers l'arrière reçu également dans une rainure ou fenêtre 41, fermée vers le bas, du rebord 534.The
Le ressort 11 est disposé entre les plaques 502 et 503 d'une manière semblable à celle décrite précédemment.The
La figure 13 montre une chaussure dont la semelle comporte une cassette 625a semblable à la cassette 25 de la figure 6, mais de plus faible longueur, située en avant du métatarse du pied de l'utilisateur et disposée en sens inverse. Autrement dit, l'arête de la cassette 625a se trouve légèrement en avant du métatarse, tandis que le ressort de la cassette 625a se trouve sous la pointe de la chaussure. La course élastique verticale du ressort de la cassette 625a est plus faible que celle du ressort associé au talon ; cette course est, par exemple, de 3 ou 4 mm.FIG. 13 shows a shoe whose sole has a
Cette cassette 625a peut être combinée avec une deuxième cassette 625b, disposée comme la cassette 25 des figures 5 et 6, c'est-à-dire avec son arête vers l'avant et son ressort sous le talon. Le ressort de la cassette 625b admet une course de 6 à 7 mm.This
En variante, la cassette 625a peut être combinée avec une partie arrière de semelle semblable à celle de la figure 1.As a variant, the
Quel que soit l'exemple de réalisation, une chaussure conforme à l'invention reste d'une fabrication simple tout en assurant un bon amortissement des chocs du talon sur le sol avec une restitution optimale de l'énergie emmagasinée lors du choc. Les frottements entre le pied et la tige de la chaussure, notamment au niveau du talon, sont supprimés malgré l'élasticité introduite au niveau du talon.Whatever the embodiment, a shoe according to the invention remains simple to manufacture while ensuring good shock absorption of the heel on the ground with an optimal restitution of the energy stored during the impact. The friction between the foot and the upper of the shoe, especially at the heel, is eliminated despite the elasticity introduced at the heel.
Claims (18)
- A shoe comprising at least one spring (R) disposed in the sole between an upper plate (2, 102, 202, 302, 402, 502) and a lower plate (3, 103, 203, 303, 403, 503) for absorbing the impacts on the ground, the spring (R) being disposed substantially in the vertical direction of the user's heel, between the rigid upper plate (2, 102, 202, 302, 402, 502) and the lower plate (3, 103, 203, 303, 403, 502) close to the ground, and being constituted by at least one spring (11) of the torsion spring type which comprises at least one coil (12, 13) with a substantially horizontal axis, provided at each of its ends with a radial extension arm (12a, 12b; 13a, 13b), the two radial end arms (12a, 12b; 13a, 13b), forming between them an angle (A), the coil being disposed so as to bear externally against one of the plates (2, 102, 202, 302, 402, 502; 3, 103, 203, 303, 403, 503), while the ends of the arms (12a, 12b; 13a, 13b) bear against the other plate (3, 103, 203, 303, 403, 503; 2, 102, 202, 302, 402, 502), the coil being capable of coming closer to, or moving away from the plate from which it is spaced along a direction that is substantially orthogonal to this plate, while the angular interspacing between the arms increases or decreases under the effect of the load applied to the spring, characterized in that the arms of the spring (12a, 12b; 13a, 13b) have substantially the same radial dimension, that the angle (A) between the arms of the spring is approximately 60° in the rest position, the angle between one arm and the vertical being approximately 30°, and that the ends of the arms (12a, 12b; 13a, 13b) are in a sliding bearing contact with the said other plate (3, 103, 203, 303, 403, 503; 2, 102, 202, 302, 402, 502), means being moreover provided for keeping the spring (11) relative to the plate (2, 102, 202, 302, 402, 502; 3, 103, 203, 403, 503) along the longitudinal direction and in the position where the axis of the coil is transverse.
- A shoe according to claim 1, characterized in that the spring comprises two coils (12, 13) in opposite coaxial directions, separated from each other by a free space (14), the end arms (12b, 13b) situated axially towards the outside of these coils, being connected by a leg (15) parallel to the axis of the springs.
- A shoe according to claim 2, characterized in that the arms (12a, 13a) situated towards the inside are bent towards the outside at their ends (16a, 16b)
- A shoe according to one of claims 1 to 3, characterized in that a transverse groove (17) with a concave circular profile comes to follow a portion of the cylindrical surface of the coils (12, 13) to keep the spring in position.
- A shoe according to one of the preceding claims, characterized in that the height of the spring is approximately 18 mm when it is not subjected to a load, and that it is arranged so that when the overall height of the spring is reduced by the first millimetre, the load sustained by this spring will be approximately 35daN.
- A shoe according to claim 5, characterized in that the vertical elastic travel of the spring is approximately 6 or 7 mm, the initial load then being only doubled.
- A shoe according to any one of the preceding claims, characterized in that it comprises a cassette (25, 625a, 625b) of a triangular prismatic shape, constituted by a dihedron obtained by two rigid plates (102, 103) articulated along the edge, the spring (R, 11) being disposed between the faces of this dihedron, this prismatic cassette (25) being slipped in between a portion of the upper sole and a portion of the lower sole, the sole portions being joined at their periphery by a kind of bellows (19) which accepts the variations in height of the prismatic cassette.
- A shoe according to claim 7, characterized in that the edge of the cassette (25, 625b) is situated substantially in the region of the metatarsal (4) of the user's foot, while the spring of the cassette (R, 11) is situated under the region of the heel.
- A shoe according to claim 7, characterized in that the cassette (625a) is situated ahead of the metatarsal of the user's foot, the edge of the cassette being situated slightly ahead of the metatarsal of the foot, while the spring of the cassette is situated beneath the point of the shoe.
- A shoe according to one of claims 7 to 9, characterized in that it comprises two cassettes (625a, 625b) disposed in opposite directions one at the front, the other at the rear, the front cassette having smaller dimensions than those of the rear cassette.
- A shoe according to any one of the preceding claims, characterized in that the upper plate (2, 102, 202, 302, 402, 502) and the lower plate (3, 103, 203, 303, 403, 503) have U-shaped cross-sections, their concavity turning towards each other, and whose sides (21, 22; 23, 24) fit into one another to ensure a relative lateral hold of the two plates.
- A shoe according to any one of the preceding claims, characterized in that : the upper plate (2, 102, 202, 302, 402, 502) is rigid and entirely situated behind a transverse line (L) intended to be located under the metatarsal (4) of the user's foot; the sole has a transverse articulation zone (5) in the region of this line (L), so that the angle formed between the plane of the rigid upper plate (2, 102, 202, 302, 402, 502) and the portion (6) of the sole situated ahead of the articulation zone can vary; the walls of the side (9) of the shoe which surround the user's foot are fixed at their lower portion to the rigid upper plate (2, 102, 202, 302, 402, 502); the spring or springs (R, 11) is (or are) situated beneath the only zone of the rigid plate intended to be located under the user's heel, the whole set being such that the variations of the load applied to the spring (R, 11) entail an oscillating movement of the rigid upper plate (2, 102, 202, 302, 402, 502) round the transverse articulation line (L), relative to the lower plate (3, 103, 203, 303, 403, 503).
- A shoe according to claim 12, characterized in that the rigid upper plate (2, 102) extends as far as the transverse articulation line (L) which constitutes its front limit.
- A shoe according to one of claims 12 or 13, characterized in that the lower plate (3, 103, 203, 303, 403, 503) is rigid and that a layer (20) of a more flexible material is provided under the lower surface of this rigid plate (3, 103, 203, 303, 403, 503) so as to come into contact with the ground.
- A shoe according to claim 12, characterized in that the rigid upper plate (202, 302, 402, 502) has a surface that is limited to the heel of the shoe, while the lower plate (203, 303, 403, 503) has similar dimensions and is mounted with scope for at least a substantially vertical translation relative to the upper plate (202, 302, 402, 502).
- A shoe according to one of claims 12 to 15, characterized in that the spring (11) is arranged to provide at the start of the compression a high loading which will subsequently only double, after a compression travel of approximately 6 or 7 mm, so as to obtain a good absorption of the impacts.
- A cassette intended to be slipped in between an upper sole portion and a lower sole portion of a shoe according to one of claims 7 to 11, the said cassette (25, 625b) having a triangular prismatic shape constituted by a dihedron obtained by two rigid plates (102, 103) articulated along the edge round a transverse pin (26), a spring (R, 11) being disposed between the faces of this dihedron, the length of the cassette being such that the articulation pin is located during normal use of the shoe substantially under the metatarsal of the user's foot, while the spring (R, 11) is located substantially in the vertical direction of the user's heel.
- A spring for a shoe sole, comprising at least one coil (12, 13) provided at each of its ends with an axial extension arm (12a, 12b; 13a, 13b), characterized in that the two radial end arms have substantially the same radial dimension, and form between them an angle (A) of approximately 60°, and that it comprises two coaxial coils (12, 13) with reverse directions, separated from each other by a free space (14), the end arms (12b, 13b) situated axially towards the outside of these coils, being connected by a leg (15) parallel to the axis of the springs, the coil being intended to be disposed to bear externally against a plate, while the ends of the arms are intended to come into a sliding bearing contact with another plate, the coil being capable of coming closer to, or moving away from the plate from which it is interspaced along a substantially orthogonal direction to this plate, while the angular interspacing between the arms increases or decreases under the effect of the load.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR9200644 | 1992-01-22 | ||
FR9200644A FR2686233A1 (en) | 1992-01-22 | 1992-01-22 | SHOE, ESPECIALLY A SPORTS SHOE, COMPRISING AT LEAST ONE SPRING PROVIDED IN THE SOLE, CASSETTE AND SPRING FOR SUCH A SHOE. |
Publications (2)
Publication Number | Publication Date |
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EP0552994A1 EP0552994A1 (en) | 1993-07-28 |
EP0552994B1 true EP0552994B1 (en) | 1996-07-31 |
Family
ID=9425867
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93400006A Expired - Lifetime EP0552994B1 (en) | 1992-01-22 | 1993-01-05 | Shoe, in particular a sports-shoe, comprising a spring located in the sole, enclosure and spring for such a shoe |
Country Status (6)
Country | Link |
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US (1) | US5282325A (en) |
EP (1) | EP0552994B1 (en) |
JP (1) | JP3567218B2 (en) |
DE (1) | DE69303833T2 (en) |
ES (1) | ES2090894T3 (en) |
FR (1) | FR2686233A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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US8112905B2 (en) | 2009-04-10 | 2012-02-14 | Athletic Propulsion Labs LLC | Forefoot catapult for athletic shoes |
US8347526B2 (en) | 2009-04-10 | 2013-01-08 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
US8752306B2 (en) | 2009-04-10 | 2014-06-17 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
US11484092B2 (en) | 2020-07-15 | 2022-11-01 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
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Families Citing this family (80)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4339107A1 (en) * | 1993-11-16 | 1995-05-18 | Engros Schuhhaus Ag | Shoe sole |
DE4339106A1 (en) * | 1993-11-16 | 1995-05-18 | Engros Schuhhaus Ag | Shoe sole |
US5435079A (en) * | 1993-12-20 | 1995-07-25 | Gallegos; Alvaro Z. | Spring athletic shoe |
USD434548S (en) * | 1994-06-14 | 2000-12-05 | Gallegos Alvaro Z | Shoe with spring |
US5513448A (en) * | 1994-07-01 | 1996-05-07 | Lyons; Levert | Athletic shoe with compression indicators and replaceable spring cassette |
FR2729546B1 (en) * | 1995-01-25 | 1997-10-24 | Bozion Jean | FOOTWEAR, ESPECIALLY A SPORTS SHOE, COMPRISING AN ELASTIC ENERGY-RETURNING INSERT |
IT1282498B1 (en) * | 1995-11-15 | 1998-03-23 | Diadora Spa | STABILITY SUPPORT, ESPECIALLY FOR THE CONTROL OF PRONATION IN SPORTS SHOES. |
USD384192S (en) * | 1995-12-15 | 1997-09-30 | Frank Hsieh | Bouncing shoe |
FR2748372B1 (en) * | 1996-05-13 | 1998-08-14 | Paradis Frederic | SHOE EQUIPPED WITH AN ELASTIC SHOCK ABSORBER DEVICE |
US5797198A (en) * | 1996-06-19 | 1998-08-25 | Pomerantz; David B. | Adjustable shock absorbing device for shoe |
US5727429A (en) * | 1996-08-26 | 1998-03-17 | Shimano, Inc. | Low profile bicycle pedal and cleat assembly |
US5778739A (en) * | 1996-08-26 | 1998-07-14 | Shimano, Inc. | Bicycle pedal with gap adjusting mechanism |
US5755144A (en) * | 1996-08-26 | 1998-05-26 | Shimano, Inc. | Low profile bicycle pedal with top and bottom side clamping arrangements |
US5743028A (en) * | 1996-10-03 | 1998-04-28 | Lombardino; Thomas D. | Spring-air shock absorbtion and energy return device for shoes |
US5701685A (en) * | 1997-01-23 | 1997-12-30 | Mariner J. Pezza | Triple-action, adjustable, rebound device |
WO1998047580A1 (en) | 1997-04-18 | 1998-10-29 | The Burton Corporation | Snowboard boot with a recess to accommodate an interface for engaging the snowboard boot to a binding |
SI9700102A2 (en) * | 1997-04-22 | 1998-04-30 | Rado POGAČAR | Elastic heel of a shoe |
US6553692B1 (en) * | 1998-07-08 | 2003-04-29 | Gary G. Pipenger | Shock absorption mechanism for shoes |
ES2208299T3 (en) | 1999-04-01 | 2004-06-16 | Heeling Sports Limited | APPLIANCE AND METHOD OF ROLLING HEEL. |
US7063336B2 (en) * | 1999-04-01 | 2006-06-20 | Heeling Sports Limited | External wheeled heeling apparatus and method |
SE524081C2 (en) * | 1999-05-11 | 2004-06-22 | Trackguard Hb | Device for shoe with elastic insert and method of using the device |
US20010042320A1 (en) * | 1999-05-11 | 2001-11-22 | Lindqvist Wilhelm Ove | Shoe system with a resilient shoe insert |
IT1311662B1 (en) * | 1999-11-11 | 2002-03-14 | Benetton Spa | FOOTWEAR STRUCTURE. |
US6601042B1 (en) | 2000-03-10 | 2003-07-29 | Robert M. Lyden | Customized article of footwear and method of conducting retail and internet business |
US6449878B1 (en) | 2000-03-10 | 2002-09-17 | Robert M. Lyden | Article of footwear having a spring element and selectively removable components |
US7752775B2 (en) | 2000-03-10 | 2010-07-13 | Lyden Robert M | Footwear with removable lasting board and cleats |
CA2330847C (en) * | 2001-01-12 | 2007-11-13 | Bauer Nike Hockey Inc. | In-line roller skate |
US6457261B1 (en) | 2001-01-22 | 2002-10-01 | Ll International Shoe Company, Inc. | Shock absorbing midsole for an athletic shoe |
TW491031U (en) * | 2001-03-20 | 2002-06-11 | Lien Year Entpr Corp | Shoes with elastic heels |
US6860034B2 (en) * | 2001-04-09 | 2005-03-01 | Orthopedic Design | Energy return sole for footwear |
US6879885B2 (en) * | 2001-11-16 | 2005-04-12 | Goodrich Pump & Engine Control Systems, Inc. | Rotor torque predictor |
AU2002362078A1 (en) * | 2001-12-07 | 2003-06-23 | Riccardo W Hayes | Devices and systems for dynamic foot support |
US6684531B2 (en) | 2001-12-27 | 2004-02-03 | Brian G. Rennex | Spring space shoe |
WO2003063628A1 (en) * | 2002-02-01 | 2003-08-07 | Heeling Sports Limited | Grind rail apparatus |
US6848201B2 (en) * | 2002-02-01 | 2005-02-01 | Heeling Sports Limited | Shock absorption system for a sole |
US7401419B2 (en) * | 2002-07-31 | 2008-07-22 | Adidas International Marketing B.V, | Structural element for a shoe sole |
DE102005006267B3 (en) * | 2005-02-11 | 2006-03-16 | Adidas International Marketing B.V. | Shoe sole e.g. for sport shoe, has heel which has bowl or edge having form corresponding to heel of foot and underneath bowl and or edge of heel side panels which are connected to separate rear side panel |
US7950166B1 (en) | 2002-11-21 | 2011-05-31 | Stephen Perenich | Simplified energy-return shoe system |
US7290354B2 (en) * | 2002-11-21 | 2007-11-06 | Stephen Perenich | Shoe suspension system |
US7905033B1 (en) | 2002-11-21 | 2011-03-15 | Stephen Perenich | Energy-return shoe system |
US6928756B1 (en) * | 2003-03-03 | 2005-08-16 | Richard Haynes | Jump assisting spring heel shoe |
US8056262B2 (en) * | 2003-10-08 | 2011-11-15 | Trackguard Ab | Shoe system with a resilient shoe insert |
US20050166422A1 (en) * | 2004-02-04 | 2005-08-04 | Puma Aktiengesellschaft Rudolf Dassler Sport | Shoe with an articulated spring-loaded outsole |
US7334351B2 (en) * | 2004-06-07 | 2008-02-26 | Energy Management Athletics, Llc | Shoe apparatus with improved efficiency |
JP2008508953A (en) * | 2004-08-04 | 2008-03-27 | ヒーリング・スポーツ・リミテッド | Electric moving tool and electric moving method |
US20080256827A1 (en) * | 2004-09-14 | 2008-10-23 | Tripod, L.L.C. | Sole Unit for Footwear and Footwear Incorporating Same |
WO2006129392A1 (en) * | 2005-05-30 | 2006-12-07 | Mizuno Corporation | Sole structure body for shoes |
US20070101617A1 (en) * | 2005-11-10 | 2007-05-10 | Fila Luxembourg S.A.R.L. | Footwear sole assembly having spring mechanism |
US7415882B2 (en) * | 2005-12-19 | 2008-08-26 | The Boeing Company | Methods and systems for inspection of composite assemblies |
ITTV20060213A1 (en) * | 2006-11-28 | 2008-05-29 | Tecnica Spa | SPORTS SHOE FOR SLIDING SPORTS |
DE102006059658B3 (en) * | 2006-12-18 | 2008-03-27 | Adidas International Marketing B.V. | Shoe e.g. sports shoe, has lever comprising arm connected with deforming element e.g. spiral spring, and another arm connected with sole surface and sole shell, where lever at intersection of arms is rotatably supported at sole shell |
US20120110871A1 (en) * | 2007-02-13 | 2012-05-10 | Alexander Elnekaveh | Resilient Shoe With Pivoting Sole |
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KR100887625B1 (en) * | 2007-12-12 | 2009-03-10 | 황영순 | The elastic sole and its shoes having elastic reaction force and shock absorption |
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Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4756095A (en) * | 1986-06-23 | 1988-07-12 | Nikola Lakic | Footwarmer for shoe |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE16130C (en) * | E. HERZOG in Klausenburg, Siebenbürgen | Elastic heel | ||
US357062A (en) * | 1887-02-01 | Spring-heel for boots or shoes | ||
US581661A (en) * | 1897-04-27 | Birger iieftye | ||
US980657A (en) * | 1909-05-19 | 1911-01-03 | Justin S Meacham | Spring-heel for shoes. |
US993279A (en) * | 1909-06-19 | 1911-05-23 | Gilmer Bray | Heel for boots and shoes. |
US1328816A (en) * | 1919-04-30 | 1920-01-27 | William W Brown | Shock-absorbing heel |
US1403970A (en) * | 1921-03-15 | 1922-01-17 | Lioy Paul | Heel cushion |
US1469920A (en) * | 1922-09-21 | 1923-10-09 | Dutchak John | Spring heel |
FR701729A (en) * | 1930-05-21 | 1931-03-21 | Shock-absorbing device allowing the use of shocks occurring in particular during walking | |
CH228630A (en) * | 1942-11-25 | 1943-09-15 | Weller Karl | Elastic shoe sole, especially for Zoccoli. |
FR909691A (en) * | 1945-03-16 | 1946-05-15 | Articulated and elastic sole for shoes of all kinds | |
US2475092A (en) * | 1947-05-23 | 1949-07-05 | William B Harrell | Bouncing skate |
US2545519A (en) * | 1950-03-27 | 1951-03-20 | John D Kells | Shoe heel |
ES185992Y (en) * | 1972-11-23 | 1974-07-16 | Saurina Pavia | PERFECTED FOOTWEAR WITH SWINGING HEEL. |
FR2507066A1 (en) * | 1981-06-09 | 1982-12-10 | Barbeau Jacques | Spring fitting for training shoe sole - has plate bent into waves held between V=shaped walls of sole |
US4492046A (en) * | 1983-06-01 | 1985-01-08 | Ghenz Kosova | Running shoe |
US4771554A (en) * | 1987-04-17 | 1988-09-20 | Foot-Joy, Inc. | Heel shoe construction |
US4843737A (en) * | 1987-10-13 | 1989-07-04 | Vorderer Thomas W | Energy return spring shoe construction |
US4894934A (en) * | 1989-01-23 | 1990-01-23 | Illustrato Vito J | Rebound heel device |
US5159767A (en) * | 1990-06-11 | 1992-11-03 | Allen Don T | Orthopedic stabilizer attachment |
-
1992
- 1992-01-22 FR FR9200644A patent/FR2686233A1/en active Granted
- 1992-10-19 US US07/962,731 patent/US5282325A/en not_active Expired - Lifetime
-
1993
- 1993-01-05 ES ES93400006T patent/ES2090894T3/en not_active Expired - Lifetime
- 1993-01-05 DE DE69303833T patent/DE69303833T2/en not_active Expired - Lifetime
- 1993-01-05 EP EP93400006A patent/EP0552994B1/en not_active Expired - Lifetime
- 1993-01-22 JP JP00957993A patent/JP3567218B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4756095A (en) * | 1986-06-23 | 1988-07-12 | Nikola Lakic | Footwarmer for shoe |
Cited By (15)
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WO2009124729A1 (en) | 2008-04-07 | 2009-10-15 | Head Technology Gmbh | Sports shoe, in particular tennis shoe |
DE202008004735U1 (en) | 2008-04-07 | 2009-10-29 | Head Technology Gmbh | Sports shoe, in particular tennis shoe |
US8732983B2 (en) | 2009-04-10 | 2014-05-27 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
US8347526B2 (en) | 2009-04-10 | 2013-01-08 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
US8495825B2 (en) | 2009-04-10 | 2013-07-30 | Athletic Propulsion Labs LLC | Forefoot catapult for athletic shoes |
US8621766B2 (en) | 2009-04-10 | 2014-01-07 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
US8112905B2 (en) | 2009-04-10 | 2012-02-14 | Athletic Propulsion Labs LLC | Forefoot catapult for athletic shoes |
US8752306B2 (en) | 2009-04-10 | 2014-06-17 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
US9364044B2 (en) | 2009-04-10 | 2016-06-14 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
US11039660B2 (en) | 2009-04-10 | 2021-06-22 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
US11259592B2 (en) | 2009-04-10 | 2022-03-01 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
US11484092B2 (en) | 2020-07-15 | 2022-11-01 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
US11707109B2 (en) | 2020-07-15 | 2023-07-25 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
US11576465B2 (en) | 2021-05-18 | 2023-02-14 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
US11857027B2 (en) | 2021-05-18 | 2024-01-02 | Athletic Propulsion Labs LLC | Shoes, devices for shoes, and methods of using shoes |
Also Published As
Publication number | Publication date |
---|---|
FR2686233A1 (en) | 1993-07-23 |
FR2686233B1 (en) | 1995-04-28 |
DE69303833T2 (en) | 1997-02-06 |
US5282325A (en) | 1994-02-01 |
JPH05293001A (en) | 1993-11-09 |
EP0552994A1 (en) | 1993-07-28 |
JP3567218B2 (en) | 2004-09-22 |
ES2090894T3 (en) | 1996-10-16 |
DE69303833D1 (en) | 1996-09-05 |
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