EP0419317A1 - Protective element for stiletto heel of a shoe - Google Patents

Protective element for stiletto heel of a shoe Download PDF

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Publication number
EP0419317A1
EP0419317A1 EP19900402478 EP90402478A EP0419317A1 EP 0419317 A1 EP0419317 A1 EP 0419317A1 EP 19900402478 EP19900402478 EP 19900402478 EP 90402478 A EP90402478 A EP 90402478A EP 0419317 A1 EP0419317 A1 EP 0419317A1
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EP
European Patent Office
Prior art keywords
head
heel
shoe
wear
element according
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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.)
Granted
Application number
EP19900402478
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German (de)
French (fr)
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EP0419317B1 (en
Inventor
Manöel Bouchet
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Sa M3b
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Sa M3b
Manoel Bouchet SA
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Publication of EP0419317A1 publication Critical patent/EP0419317A1/en
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Publication of EP0419317B1 publication Critical patent/EP0419317B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B21/00—Heels; Top-pieces or top-lifts
    • A43B21/02—Heels; Top-pieces or top-lifts characterised by the material
    • A43B21/20—Heels; Top-pieces or top-lifts characterised by the material plastics
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B21/00—Heels; Top-pieces or top-lifts
    • A43B21/36—Heels; Top-pieces or top-lifts characterised by their attachment; Securing devices for the attaching means

Definitions

  • the most well-known type of element consists of a simple block of synthetic plastic material of resistance to wear and appropriate deformation, and which is pressed into the heel of a shoe by means of a fastening element.
  • metallic such as an ankle, a stud, a nail, etc. . .
  • a suitable reinforcement intended to receive said head, so that it cannot come in contact with the ground.
  • the resistance to punching of the element is provided by a surface of the hard molding 4 equal to that of the wear plate 5.
  • FIGS. 2 and 3 which correspond in preferred embodiments of a bonbout for stiletto heels of small section, a more or less significant part of the hard material 4 comes partially into contact with the ground.
  • the narrow extension 5 of the hard part 4 can serve as a wear indicator.
  • the imaginary surface of separation or "line of demarcation" between the two plastic materials can be curved, instead of being rectilinear as in FIG. 1 so as to provide a greater thickness of the wear plate 5 of the attack side of the foot on the ground.
  • the wear indicator 6 in Figure 3 can be shaped differently and be provided in color to form an easily identifiable mark.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

According to the invention, the protective element or "heel tip" consists of a single assembly in which the following are firmly connected together, in a homogeneous manner: a fastening means (1), stud or pin for forcing into the stiletto heel; a moulding (4) in very hard resin which encloses the head (3) of the fastening means (1); an over moulding (5) around the hard resin (4) in order to form the wear plate of the heel tip made in relatively flexible plastic material with high resistance to abrasion. <IMAGE>

Description

La présente invention a trait au domaine de la chaussure et concerne tout particulièrement un élément de protection anti­dérapant et anti-usure destiné à être fixé à l'extrémité libre du talon d'une chaussure de femme et, spécifiquement, du talon dit "aiguille".The present invention relates to the field of footwear and relates more particularly to a non-slip and anti-wear protective element intended to be fixed to the free end of the heel of a woman's shoe and, specifically, of the so-called "needle" heel. .

On connait déjà, dans le domaine, plusieurs types de tels éléments, souvent désignés par le terme "bonbout". Le type d' élément le plus connu consiste en un simple bloc de matière plastique synthétique de résistance à l'usure et à la déformation appropriée, et qui est enfoncé dans le talon d'une chaussure à l'aide d'un élément de fixation métallique tel qu'une cheville, un tenon, un clou, etc. . . Pour éviter que la tête de l'élément de fixation métallique ne frotte sur le sol au cours de la marche, il est connu de prévoir dans le bloc d'usure un renfor­cement approprié destiné à recevoir ladite tête, afin qu'elle ne puisse venir en contact avec le sol. Cependant, dès qu'une certaine usure du bloc a eu lieu, on conçoit que la tête de l' élément de fixation vient affleurer à la surface inférieure de celui-ci, pour ainsi désavantageusement détériorer le sol et/ou engendrer des bruits intempestifs.Several types of such elements are already known in the field, often designated by the term "bonbout". The most well-known type of element consists of a simple block of synthetic plastic material of resistance to wear and appropriate deformation, and which is pressed into the heel of a shoe by means of a fastening element. metallic such as an ankle, a stud, a nail, etc. . . To prevent the head of the metal fastening element from rubbing on the ground during walking, it is known to provide in the wear block a suitable reinforcement intended to receive said head, so that it cannot come in contact with the ground. However, as soon as a certain wear of the block has taken place, it can be seen that the head of the fixing element is flush with the lower surface of the latter, thereby disadvantageously damaging the ground and / or generating nuisance noise.

Pour pallier cet inconvénient, on a prévu de noyer la tête du clou de fixation à l'intérieur de l'élément de protection. Une telle solution conduit cependant à un autre inconvénient. En effet, du fait de la souplesse inhérente du matériau de l'élé ment, on comprend que sa fixation à l'extrémité du talon à l' aide d'un marteau ne conduise pas à l'assemblage parfaitement rigide qui est souhaité, et il est fréquent que ce type d'élé­ment soit à remplacer bien avant que son degré d'usure ne l' exige, par exemple à cause d'une séparation prématurée de l'as­semblage due à un défaut de marche, un choc accidentel , ou encore à cause d'un phénomène marqué de poinçonnement de l'élé­ment de protection par la tête du clou qu'il abrite. On constate également des phénomènes de résonance et de glissement.To overcome this drawback, provision has been made to drown the head of the fixing nail inside the protective element. However, such a solution leads to another drawback. In fact, due to the inherent flexibility of the element material, it is understood that its attachment to the end of the heel using a hammer does not lead to the perfectly rigid assembly which is desired, and it is frequent that this type of element is to be replaced well before its degree of wear requires it, for example because of a premature separation of the assembly due to a malfunction, an accidental shock, or again because of a marked phenomenon of punching of the protective element by the head of the nail which it shelters. There are also resonance and sliding phenomena.

Enfin l'on remarque souvent, après un certain temps d'utili­sation, en particulier avec les talons étroits tels que talons "aiguille" et analogues, que l'élément de protection peut tour­ner librement par rapport au talon. Ceci est bien entendu désavantageux, tant au point de vue de la stabilité et du confort de la chaussure que d'un point de vue esthétique.Finally, it is often noted, after a certain period of use, in particular with narrow heels such as "needle" heels and the like, that the protective element can rotate freely relative to the heel. This is of course disadvantageous, both from the point of view of the stability and comfort of the shoe and from an aesthetic point of view.

De très nombreux systèmes de protection de type "bonbout" ont été préconisés, commercialisés et/ou ont fait l'objet d'un assez grand nombre de brevets d'invention. On est parvenu, certes, à des éléments de bonne robustesse à l'usage (voir par exemple les brevets européens N°186 566 et 210 922) mais tous les perfectionnements brevetés et suggérés jusqu'ici ont essentiellement concerné les moyens de liaison ou fixation du bloc ou plaque d'usure au talon de la chaussure, par chevilles, clous, tenons ou analogues, étant convenu que cette plaque d'usure était laissée à l'appréciation du fabricant, lequel peut exercer son choix dans un large catalogue de produits existant actuellement sur le marché. On notera que, jusqu'ici, cette plaque d'usure est soit contenue dans une cuvette solidaire de la tête de clou (moyen de fixation au talon) soit maintenue en place par cette même tête en position traversante.Many protection systems of the "bonbout" type have been recommended, marketed and / or have been the subject of a fairly large number of invention patents. We have certainly achieved elements of good robustness in use (see for example European patents N ° 186 566 and 210 922) but all the improvements patented and suggested so far have mainly concerned the means of connection or attachment from the block or wear plate to the heel of the shoe, by ankles, nails, studs or the like, it being understood that this wear plate was left to the appreciation of the manufacturer, who can exercise his choice in a large catalog of products currently existing on the market. It will be noted that, up to now, this wear plate is either contained in a bowl integral with the nail head (means of fixing to the heel) or is held in place by this same head in the through position.

Il est primordiale de rappeler ici les critères auxquels doit satisfaire un bonbout "idéal", à savoir :
- une bonne résistance à l'abrasion de la plaque d'usure en contact avec le sol ;
- une absence du phénomène de poinçonnement cité ci-avant, du à l'usure prématurée de la tête du clou ou autre moyen de fixation ;
- une résistance maximale à l'arrachement c'est-à-dire à la désolidarisation du clou et de la plaque d'usure, la souplesse du matériau constitutif de cette plaque entraînant son déchiquetage prématuré.It is essential to recall here the criteria which an "ideal" bonbout must satisfy, namely:
- good abrasion resistance of the wear plate in contact with the ground;
- an absence of the punching phenomenon mentioned above, due to premature wear of the head of the nail or other fixing means;
- Maximum resistance to tearing, that is to say to the separation of the nail and the wear plate, the flexibility of the material of this plate causing its premature shredding.

Il est bien évident qu'une même matière utilisée pour la plaque d'usure ne peut satisfaire à ces trois exigences et les techniques utilisées jusqu'à présent n'ont pu aboutir qu'à des compromis plus ou moins heureux.It is obvious that the same material used for the wear plate cannot meet these three requirements and the techniques used so far have only resulted in more or less happy compromises.

Il a maintenant été trouvé une solution à ce problème d'obtention d'un "bonbout" de grande qualité et de confort de marche, permettant de remplir les séries d'exigences précitées, apparemment tout à fait contradictoires.A solution has now been found to this problem of obtaining a high-quality "bonbout" and of walking comfort, making it possible to fulfill the series of aforementioned requirements, apparently entirely contradictory.

Conformément à l'invention, le nouvel élément de protection, du type comportant un moyen de fixation au talon ou clou, dont la tête est noyée dans un bloc ou plaque d'usure, compose les caractéristiques selon les revendications qui suivent la présente description.According to the invention, the new protective element, of the type comprising a means of attachment to the heel or nail, the head of which is embedded in a block or wear plate, composes the characteristics according to the claims which follow this description.

On comprendra qu'un tel ensemble, où se trouvent fermement solidarisés le moyen de fixation, ou clou, et la plaque d'usure, puisse réunir les qualités recherchées pour le bonbout le plus parfait possible. En effet, l'emprisonnement de la tête du clou dans la partie intermédiaire très dure (ou premier matériau) procure la résistance à l'arrachement ainsi qu'aux déformations par torsion et/ou traction. Un tel moulage permet d'éviter en outre, ou en tout cas de retarder considérablement le phénomène de poinçonnement. Enfin le "surmoulage" autour de ce matériau dur par une matière plastique compatible plus souple, procurant le confort à la marche, permet de satisfaire à la condition de résistance à l'abrasion, par le choix d'un matériau de bonnes caractéristiques anti-usure.It will be understood that such an assembly, where the fastening means, or nail, and the wear plate are firmly secured, can combine the qualities sought for the most perfect bonbout possible. Indeed, the imprisonment of the head of the nail in the very hard intermediate part (or first material) provides resistance to tearing and to deformation by torsion and / or traction. Such molding further avoids, or in any case considerably delays the punching phenomenon. Finally, the "overmolding" around this hard material with a more flexible compatible plastic material, providing walking comfort, makes it possible to satisfy the condition of resistance to abrasion, by choosing a material with good anti-aging characteristics. wear.

En pratique, le premier matériau doit donc avoir une dureté suffisante et de préférence au moins égale à 74 Shore D. Il est avantageusement choisi parmi les matières plastiques aptes à être moulées par injection comme par exemple - à titre non limitatif - des polyamides ou polyuréthannes renforcés par une charge à base de verre ou autre matériau approprié. Le second matériau est choisi au contraire parmi les matières plastiques coulables et polymérisables de façon à réaliser, dans un moule où l'on a moulé par injection la tête du moyen de fixation ou clou, une liaison parfaite et homogène entre la résine coulée et la partie dure. Cette seconde matière plastique peut, par exemple, être constituée par un polyuréthanne sélectionné pour sa grande résistance à l'usure et à l'abrasion. Sa dureté doit être voisine de 90 Shore A seulement.In practice, the first material must therefore have sufficient hardness and preferably at least equal to 74 Shore D. It is advantageously chosen from plastics capable of being injection molded, such as, for example - without limitation - polyamides or polyurethanes reinforced with a filler based on glass or other suitable material. The second material is chosen, on the contrary, from flowable and polymerizable plastics so as to produce, in a mold in which the head of the fixing means or nail has been injection molded, a perfect and homogeneous connection between the cast resin and the hard part. This second plastic material can, for example, consist of a polyurethane selected for its high resistance to wear and abrasion. Its hardness must be close to 90 Shore A only.

Des réalisations d'éléments de protection, conformes aux caractéristiques de l'invention, sont illustrées, à titre non limitatif, sur les figures 1 à 3 de la planche annexée de dessins.Protective elements embodiments, in accordance with the characteristics of the invention, are illustrated, without limitation, in Figures 1 to 3 of the accompanying sheet of drawings.

Ces trois figures représentent un ensemble complet d'éléments de protection de type "bonbout" prêt à être fixé, par la partie acérée du moyen de fixation, dans le talon aiguille d'une chaussure de femme.These three figures represent a complete set of “bonbout” type protective elements ready to be fixed, by the sharp part of the fixing means, in the stiletto heel of a woman's shoe.

Le moyen de fixation 1, constitué par une cheville à cannelures 2, est muni d'une tête solidaire 3 que l'on a emprisonnée dans le matériau plastique dur 4, avantageusement par moulage par injection. On a ensuite effectué, autour de ce moulage 4, un "surmoulage" 5 à l'aide d'une résine polymérisable donnant lieu à un matériau plus tendre et plus souple, de bonne résistance à l'abrasion. Ce surmoulage 5 constitue la plaque d'usure proprement dite du bonbout.The fixing means 1, constituted by a splined pin 2, is provided with an integral head 3 which has been trapped in the hard plastic material 4, advantageously by injection molding. Then, around this molding 4, an "overmolding" 5 was carried out using a polymerizable resin. giving rise to a softer and more flexible material with good abrasion resistance. This overmolding 5 constitutes the wear plate proper of the bonbout.

Comme on peut le voir sur la figure 1, la résistance au poinçonnement de l'élément est fournie par une surface du moulage dur 4 égale à celle de la plaque d'usure 5. Sur les figures 2 et 3, au contraire, qui correspondent à des réalisations préférentielles de bonbout pour talons aiguille de faible section, une partie plus ou moins importante du matériau dur 4 vient partiellement en contact avec le sol. Par exemple, sur la figure 3, l'étroit prolongement 5 de la partie dure 4 peut servir de témoin d'usure.As can be seen in FIG. 1, the resistance to punching of the element is provided by a surface of the hard molding 4 equal to that of the wear plate 5. In FIGS. 2 and 3, on the contrary, which correspond in preferred embodiments of a bonbout for stiletto heels of small section, a more or less significant part of the hard material 4 comes partially into contact with the ground. For example, in FIG. 3, the narrow extension 5 of the hard part 4 can serve as a wear indicator.

On a réalisé de cette façon des séries de bonbouts monoblocs qui ont été testés mécaniquement en laboratoire ainsi qu'en conditions réelles de marches prolongées. La matière dure était constituée par un polyamide chargé au verre de dureté Shore D d'environ 78 alors que la matériau coulé et surmoulé consistait en une résine polyuréthanne sélectionnée pour ses caractéristiques de souplesse et sa résistance à l'abrasion. Sa dureté, environ 90 Shore A, était bien inférieure à celle du matériau dur. En opérant ainsi, on a obtenu, pour la majorité des échantillons expérimentés, des résistances à la traction (et donc à l'arrachement) supérieures à 45 Kg - considérablement plus élevées que celles des meilleurs bonbouts actuellement sur le marché - ainsi que des résistances à l'usure ou abrasion plus de quatre fois supérieures à celles obtenues avec les plaques d'usure connues.In this way, a series of monoblock bonbouts were produced which were tested mechanically in the laboratory as well as in real conditions of prolonged walks. The hard material consisted of a glass-filled polyamide with a Shore D hardness of around 78, while the molded and overmolded material consisted of a polyurethane resin selected for its flexibility characteristics and its abrasion resistance. Its hardness, around 90 Shore A, was much lower than that of hard material. By operating in this way, for the majority of the samples tested, tensile (and therefore tear-out) resistances greater than 45 kg were obtained - considerably higher than those of the best bonbouts currently on the market - as well as resistances to wear or abrasion more than four times greater than those obtained with known wear plates.

Bien entendu d'autres variantes de réalisation, non représentées sur les dessins, peuvent être mises en oeuvre dans le cadre de l'invention. Par exemple, la surface imaginaire de séparation ou "ligne de démarcation" entre les deux matériaux plastiques peut être incurvée, au lieu d'être rectiligne comme sur la figure 1 de façon a prévoir une épaisseur plus grande de la plaque d'usure 5 du côté d'attaque du pied sur le sol. En outre, le témoin d'usure 6 de la figure 3 peut être conformé différemment et être prévu en couleur afin de constituer un repère facilement identifiable.Of course, other alternative embodiments, not shown in the drawings, can be implemented within the framework of the invention. For example, the imaginary surface of separation or "line of demarcation" between the two plastic materials can be curved, instead of being rectilinear as in FIG. 1 so as to provide a greater thickness of the wear plate 5 of the attack side of the foot on the ground. In addition, the wear indicator 6 in Figure 3 can be shaped differently and be provided in color to form an easily identifiable mark.

Claims (5)

1- ELément de protection antidérapant et anti-usure pour talon aiguille de chaussure, du type comportant un moyen de fixation (1) au talon, dont la tête (3) est noyée dans un bloc ou plaque d'usure, caractérisé en ce que ladite tête est moulée dans un premier matériau (4) en matière plastique de grande dureté, au moins égale à 74 shore D, qui fait corps avec un second matériau (5) en matière plas­tique compatible, plus souple et résistant à l'abrasion, de dureté voisine de 90 shore A seulement, ledit matériau jouant le rôle de plaque d'usure ; la tête (3) du moyen de fixation (1) et les deux matériaux (4,5) constituant un ensemble homogène et unitaire.1- Anti-slip and anti-wear protective element for a shoe stiletto heel, of the type comprising a fixing means (1) to the heel, the head (3) of which is embedded in a block or wear plate, characterized in that said head is molded from a first material (4) of high hardness plastic material, at least equal to 74 shore D, which is integral with a second material (5) of compatible plastic material, more flexible and resistant to abrasion, of hardness close to 90 shore A only, said material acting as a wear plate; the head (3) of the fixing means (1) and the two materials (4,5) constituting a homogeneous and unitary assembly. 2- Elément selon la revendication 1, caractérisé en ce que le premier matériau (4) est choisi parmi les matières plas­tiques moulables par injection.2- Element according to claim 1, characterized in that the first material (4) is chosen from plastics injection moldable. 3- Elément selon la revendication 3, caractérisé en ce que la matière plastique est constituée par un polymère de type polyamide ou polyuréthanne chargé par du verre.3- Element according to claim 3, characterized in that the plastic material consists of a polymer of polyamide or polyurethane type loaded with glass. 4- Elément selon l'une quelconque des revendications 1 à 3. caractérisé en ce que le second matériau (5) est choisi parmi les matières plastiques coulables et polymérisables compatibles avec le premier matériau (4).4- Element according to any one of claims 1 to 3. characterized in that the second material (5) is chosen from flowable and polymerizable plastics compatible with the first material (4). 5- Elément selon l'une quelconque des revendications 1 à 4 caractérisé en ce que l'espace occupé par le premier maté­riau (4) dans lequel ladite tête (3) est moulée se prolonge pour venir en contact avec le sol, après la pose dudit élé­ment sur le talon de chaussure.5- element according to any one of claims 1 to 4 characterized in that the space occupied by the first material (4) in which said head (3) is molded extends to come into contact with the ground, after installation said element on the shoe heel.
EP19900402478 1989-09-15 1990-09-10 Protective element for stiletto heel of a shoe Expired - Lifetime EP0419317B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8912091A FR2651972B1 (en) 1989-09-15 1989-09-15 PROTECTIVE ELEMENT FOR SHOE NEEDLE HEEL.
FR8912091 1989-09-15

Publications (2)

Publication Number Publication Date
EP0419317A1 true EP0419317A1 (en) 1991-03-27
EP0419317B1 EP0419317B1 (en) 1994-11-30

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EP19900402478 Expired - Lifetime EP0419317B1 (en) 1989-09-15 1990-09-10 Protective element for stiletto heel of a shoe

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EP (1) EP0419317B1 (en)
DE (1) DE69014520D1 (en)
FR (1) FR2651972B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0516755A1 (en) * 1990-02-20 1992-12-09 Fisher Camuto Corp Shoe with improved dual hardness heel-lift.
EP0566753A1 (en) * 1992-04-18 1993-10-27 F.LLI FAVERO &amp; C. s.n.c. Method for the realization of a heelpiece and the product obtained with it, particularly footwear
EP0573717A1 (en) * 1992-06-11 1993-12-15 Hiraki Kabushiki Kaisha Shoe lift construction

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8484863B2 (en) * 2009-05-07 2013-07-16 Brown Shoe Company, Inc. Top lift assembly for a shoe heel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398471A1 (en) * 1977-07-27 1979-02-23 Moeller Kg Gustav Moelde Screwed=in stud for sports shoe soles esp. football boots - consists of a metal pin covered by a hard layer and then a soft synthetic outside
GB2098457A (en) * 1981-05-15 1982-11-24 Dowty Seals Ltd Studs for footwear
EP0068056A1 (en) * 1981-06-19 1983-01-05 Polyplastiform Heel, in particular for women's shoes
EP0210922A1 (en) * 1985-07-23 1987-02-04 MANOEL BOUCHET, Société Anonyme Wear-resisting and slip-preventing element for shoe heels

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2398471A1 (en) * 1977-07-27 1979-02-23 Moeller Kg Gustav Moelde Screwed=in stud for sports shoe soles esp. football boots - consists of a metal pin covered by a hard layer and then a soft synthetic outside
GB2098457A (en) * 1981-05-15 1982-11-24 Dowty Seals Ltd Studs for footwear
EP0068056A1 (en) * 1981-06-19 1983-01-05 Polyplastiform Heel, in particular for women's shoes
EP0210922A1 (en) * 1985-07-23 1987-02-04 MANOEL BOUCHET, Société Anonyme Wear-resisting and slip-preventing element for shoe heels

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0516755A1 (en) * 1990-02-20 1992-12-09 Fisher Camuto Corp Shoe with improved dual hardness heel-lift.
EP0516755B1 (en) * 1990-02-20 1997-05-02 Nine West Group Inc. Shoe with improved dual hardness heel-lift
EP0566753A1 (en) * 1992-04-18 1993-10-27 F.LLI FAVERO &amp; C. s.n.c. Method for the realization of a heelpiece and the product obtained with it, particularly footwear
EP0573717A1 (en) * 1992-06-11 1993-12-15 Hiraki Kabushiki Kaisha Shoe lift construction

Also Published As

Publication number Publication date
FR2651972B1 (en) 1993-12-31
DE69014520D1 (en) 1995-01-12
FR2651972A1 (en) 1991-03-22
EP0419317B1 (en) 1994-11-30

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