EP2804501B1 - Chaussure sans dessus - Google Patents

Chaussure sans dessus Download PDF

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Publication number
EP2804501B1
EP2804501B1 EP12846392.4A EP12846392A EP2804501B1 EP 2804501 B1 EP2804501 B1 EP 2804501B1 EP 12846392 A EP12846392 A EP 12846392A EP 2804501 B1 EP2804501 B1 EP 2804501B1
Authority
EP
European Patent Office
Prior art keywords
shoe
foot
layer
rim
securing areas
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.)
Active
Application number
EP12846392.4A
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German (de)
English (en)
Other versions
EP2804501A1 (fr
EP2804501A4 (fr
Inventor
Yehuda AZOULAY
Olga Grossman
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Individual
Original Assignee
Individual
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Filing date
Publication date
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Publication of EP2804501A1 publication Critical patent/EP2804501A1/fr
Publication of EP2804501A4 publication Critical patent/EP2804501A4/fr
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Publication of EP2804501B1 publication Critical patent/EP2804501B1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B11/00—Footwear with arrangements to facilitate putting-on or removing, e.g. with straps
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B3/00—Footwear characterised by the shape or the use
    • A43B3/0036—Footwear characterised by the shape or the use characterised by a special shape or design
    • 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
    • A43B13/141—Soles; Sole-and-heel integral units characterised by the constructive form with a part of the sole being flexible, e.g. permitting articulation or torsion
    • 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
    • A43B13/16—Pieced soles

Definitions

  • the invention relates to a topless shoe configured to be conveniently put on.
  • the basic parts of most footwear articles are a sole and a top part.
  • the sole protects the wearer's foot from direct contact with the ground, while the top part keeps the foot secured to the shoe when the foot is lifted off the ground.
  • the top part covers a substantial portion of the foot, and is normally connected to the sole by a strip of material called a "welt".
  • the welt and the top part are combined.
  • so-called "open shoes” such as flip-flops or sandals, there is often only minimal structure holding onto the foot or parts thereof from the top. Strings and straps of various types are common examples.
  • GB 1 245 975 discloses a shoe or sandal consisting of a sole and heel unit which is held on the wearer's foot by clips, the clips being of metal or plastics or similar material of a slightly springy nature, attached to or forming part of the sole, protruding upwards and curved inwards to grip the edge of the foot, with the top ends curved slightly away from the foot to facilitate the foot entering the shoe or sandal.
  • the clips may be positioned at the toe and/or heel of the shoe and may be covered with a soft substance for comfort.
  • US 2 677 201 discloses a shoe made of thin gauge resilient sheet metal comprising two substantially duplicate but oppositely opening shell-like halves joined together along a line lengthwise of the show, and together forming the toe, heel, and sole portions thereof.
  • a shoe comprising: a concave body defined by an erecting circumferential rim having one or more foot securing areas along at least a portion of the circumference of said rim, wherein said one or more foot securing areas are normally inwardly-protruding, so as to secure a foot in said concave body when said shoe is worn, and wherein said one or more foot securing areas have an elasticity which enables said one or more foot securing areas to be pushed outwardly to receive the foot.
  • inwardly-protruding comprises said one or more foot securing areas having a vertical-axis differential of approximately 0.1-2 centimeters between an inwards-most area and an outwards most area of said rim.
  • said one or more foot securing areas extend along at least 50% of the circumference of said rim.
  • said one or more foot securing areas extend along at least 70% of the circumference of said rim.
  • said concave body comprises: a first layer serving as an insole; and a second layer disposed on an outer surface of said first layer.
  • said second layer serves as an outsole.
  • said second layer serves as a midsole
  • the shoe further comprises a third layer serving as an outsole and being disposed on an outer surface of said second layer.
  • said first layer is made at least partially of silicone.
  • said first layer is made at least partially of polyethylene foam.
  • said second layer is made at least partially of acrylonitrile butadiene styrene (ABS).
  • said third layer is made at least partially of silicone.
  • said third layer is made at least partially of high-density polyurethane.
  • a shoe comprising a sole-shaped surface having one or more elastic, polymeric foot securing areas along at least 50%) of a circumference of said sole-shaped surface, wherein each of said one or more foot securing areas is inwardly-protruding, such that a vertical-axis differential of approximately 0.1-2 centimeters exists between an inwards-most area and an outwards most area of said each of said one or more foot securing areas, and wherein said one or more foot securing areas are configured to be pushed outwardly when receiving the foot.
  • said one or more foot securing areas extend along at least 70%) of the circumference of said sole-shaped surface.
  • said one or more foot securing areas extend along at least 90% of the circumference of said sole-shaped surface.
  • said sole-shaped surface and said one or more foot securing areas are integrally formed and consist of a unitary piece of material.
  • each of said sole-shaped surface and said one or more foot securing areas is made of at least one polymeric material selected from the group consisting of: silicone, polyethylene foam, acrylonitrile butadiene styrene (ABS) and high-density polyurethane.
  • polymeric material selected from the group consisting of: silicone, polyethylene foam, acrylonitrile butadiene styrene (ABS) and high-density polyurethane.
  • the shoe is, essentially, a generally sole-shaped concave body, configured, on its own, to secure a wearer's foot inside it.
  • this securing is achieved without any substantial structure to hold on to the foot from above.
  • the concave body is comprised of a sole defined by an erecting circumferential rim.
  • the rim has one or more areas (hereinafter "foot securing areas") where it is slightly inwards-protruding, so as to provide a structurally-minimal but nonetheless effective means of securing the foot in the vertical axis.
  • the shoe is structured with these foot securing areas being normally in an inwards-protruding position, while still having a sufficient elasticity to enable them to be pushed outwardly by the foot when the shoe is put on.
  • a person wishing to put on the shoe may position his or her foot over it and approximately in alignment with the sole shape of the shoe's body, and then simply push down the foot into the shoe.
  • the circumferential rim of the shoe is engaged by the descending foot, its foot securing areas are pushed outwards, essentially expanding the circumferential rim and allowing the foot to enter the concave body of the shoe.
  • the areas start to return to their normal, inwards-protruding position.
  • the foot securing areas finally reach their normal, inwards-protruding position approximately when the foot is fully down the concave body of the shoe.
  • the normally inwards-protruding foot securing areas prevent the shoe from falling off the foot. Still, the elasticity of these foot securing areas allows for voluntary removal of the shoe, by application for force stronger than the typical downwards force exerted on the shoe naturally when walking. The degree of elasticity of these foot securing areas is carefully designed to this end.
  • FIGs. 1-2 show isometric views of an exemplary topless shoe (hereinafter “shoe") 100 from the front and back, respectively.
  • FIGs. 3-8 show planar views of shoe 100 from the front, back, left, right, top and bottom, respectively, as well as to Figs. 9-10 which show longitudinal (A) and latitudinal (B) cross-sections of the shoe, respectively.
  • the figures depict a right shoe, but are naturally intended to apply also to a left shoe, mutatis mutandis.
  • shoe 100 includes three layers: a first layer, serving as an insole 102; a second layer, serving as a midsole 104; and a third layer, serving as an outsole 106.
  • a shoe may include two layers, while having a shape similar to that of the embodiment of the figures.
  • a shoe may include four or more layers, while a shape similar to that of the embodiment of the figures.
  • insole 102 may have a generally sole-shaped concave body, made of at least a sole-shaped part (or "surface") 106 and an erecting circumferential rim 108 which defines the concave body.
  • Rim 108 may be divided, up to at least a portion of its height, into tabs, such as tabs 112a-c.
  • Sole-shaped part 106 and rim 108 may be integrally-formed, such as by injection molding, or be two separate parts attached together.
  • Rim 108 may be structured as a circumferential wall encompassing sole-shaped part 106. Rim 108 is intended, inter alia, to provide lateral support to the foot, somewhat similar to a welt of a conventional shoe.
  • rim 108 is additionally configured, advantageously, to secure the foot vertically, without the need for substantial structures such as straps or strings that cover parts of the foot from above. This may be achieved by virtue of one or more foot securing areas, such as a representative foot securing area 110a, shown encircled in Fig. 1 for demonstration reasons.
  • Foot securing area 110a is, essentially, an inwards-protruding area of tab 112a; rim 108 may be divided, across at least a portion of its height, into multiple tabs, such as tabs 112a-c and the like.
  • foot securing areas such as 110a-c
  • foot securing areas of a shoe such as shoe 100
  • foot securing areas optionally extend along a substantial portion of the circumference of the shoe, such as at least 50%, 70% or 90%, of the circumference. The degree of securing is usually a factor of the circumferential portion occupied by foot securing areas, versus the amount of inwards protrusion of these areas.
  • the present foot securing areas are only minimally inwardly protruding (to a degree which makes the present shoe essentially "topless"), and therefore extend along a substantial portion of the shoe's circumference, as discussed above.
  • a vertical-axis differential between one or more of the foot securing areas 110a-c and their associated lower parts of tabs 112a-c.
  • the cross section in Fig. 9 shows two points: a innermost point 114 of foot securing area 112c, and an outermost point 116 of a lower area of tab 112c (which may simply be referred to as the outermost point of the tab).
  • a vertical-axis differential D is marked between a vertical axis 114a on which innermost point 114 resides, and between a vertical axis 116a on which outermost point 116 resides. D may have different measurements at different circumferential areas of rim 108, to fit the foot's anatomy.
  • D may measure between approximately 0.1-3 centimeters, depending on the foot part, as discussed above. In some other embodiments, D may measure between approximately 0.1-2 cm, 0.2-2 cm, 0.3-2 cm, 0.4-2 cm, 0.5-2 cm, 0.6-2 cm, 0.7-2 cm, 0.8-2 cm, 0.9-2 cm, 1-2 cm, 1.1-2 cm, 1.2-2 cm, 1.3-2 cm, 1.4-2 cm, 1.5-2 cm, 1.6-2 cm, 1.7-2 cm, 1.8-2 cm or 1.9-2 cm, for example depending on the foot part, the shoe size and/or the like. In further embodiments, D may exceed the aforementioned measurements.
  • tabs 112a-c may purposely weaken rim 108 structurally, so it may be conveniently pushed outwards by the foot when shoe 100 is put on.
  • Tabs 112a-c may purposely weaken rim 108 structurally, so it may be conveniently pushed outwards by the foot when shoe 100 is put on.
  • an insole and/or a midsole may necessitate more tabs, while little or no tabs may be needed when more elastic materials are used - since the material elasticity, on its own, may be sufficient to allow the rim to widen to receive the foot.
  • D and the rigidity/elasticity of the materials have been carefully chosen and correlated in order to provide a functionally-beneficial tradeoff between a size of a top structure of shoe 100, which is desired to be minimal, and the ability of such structure to secure the foot sufficiently.
  • Midsole 104 may be attached to insole 102 externally, such as by glue, melting and/or the like, and the interface between the two may follow the same (or a similar) curvature and shape along a substantial part of their area or even its entirety.
  • insole 102 applies, mutatis mutandis, to midsole 104.
  • similarly-shaped elements of midsole 104 shall be referred to using the same terminology of their respective elements in insole 102.
  • an insole plus midsole structure is adopted in order to combine comfort characteristics of insole 102 with more technical-functional characteristics of midsole 104.
  • midsole 104 may depart from that of insole 102 in some parts thereof.
  • One of the differences between insole 102 and midsole 104 may be, for example, their manufacturing from different materials. While insole 102, which comes in contact with the wearer's foot, may be made of a comfortable, soft and/or antimicrobial material(s), midsole 104 may be made of a more rigid material(s).
  • insole 102 may be made at least partially of one or more of silicone, polyethylene foam, another polymeric material, a non-polymeric material or any combination thereof.
  • the thickness of insole 102 or parts thereof may be in the range of 0.2 cm to 1.5 cm. In other embodiments, the thickness of insole 102 or parts thereof may be higher than 1.5 cm.
  • Midsole 104 may be made, for instance, at least partially of one or more of acrylonitrile butadiene styrene (ABS), another polymeric material, a non-polymeric material or any combination thereof.
  • ABS acrylonitrile butadiene styrene
  • the thickness of midsole 104 or parts thereof, according to some embodiments, may be in the range of 0.2 cm to 1.5 cm. In other embodiments, the thickness of midsole 104 or parts thereof may be higher than 1.5 cm.
  • insole 102 and midsole 104 may differ in the configuration of a top area of their rims.
  • tab 110c (and optionally other tabs) of insole 102 may include a top area 118c above foot securing area 112c.
  • Top area 118c extends between innermost point 114 and an edge 118, wherein the edge is disposed outwardly relative to innermost point 114.
  • Rim 108 essentially becomes wider above innermost point 114. This widening allows for easy entry of the foot into shoe 100. When the foot contacts top area 118c and continues to be pushed down, tab 112c is pushed outwards.
  • edge 118 is vertically-aligned, exactly or approximately, with outermost point 116. Since the location of outermost point 116 is set to accommodate the foot's width, edge 118 has to be positioned at least on the same vertical axis as the outermost point, if not farther outwardly, in order for it to be wide enough to receive the foot.
  • the division of rim 108 of insole 102 into tabs does not necessarily correspond to a similar division of midsole 104.
  • two or more adjacent tabs of insole 102 may extend over a single tab of midsole 104, or vice versa.
  • the structural weakening of shoe 100 using tab division may be performed in only part of the layers of the shoe, and only in certain area(s).
  • top area 120c may be structured in such a way that it just supports top area 118c of inner sole 102.
  • Top area 120c may be structured, for example, as an outwards-curling part, which reinforces top area 118c from outside.
  • Sole-shaped part 106 of insole 102, and that of midsole 104 may have different thicknesses across different parts thereof, in order to match the natural curvature of the foot's plantar surface. For example, greater thickness may be provided beneath the arches of the foot, and lower thickness may be disposed beneath the heel bone and the forefoot.
  • a frontal part of shoe 100 which is generally referenced as 122, optionally lacks foot securing areas.
  • frontal part 122 may be shaped as a toe protector, covering the toes or a part thereof.
  • Frontal part 122 is optionally made of an extension of insole 102. Since the toes are flexible, as opposed to other parts of the foot, a foot securing area in front of the toes is usually inefficient - the toes can easily escape it. Therefore, toe protection may be provided by frontal part 122, or, in other embodiments (not shown), a frontal part of a shoe may lack such a cover altogether. Even if a cover exists, it may be structured and positioned such that there is a vertical gap between it and the toes when the shoe is worn; namely, it may not serve to secure the foot in place.
  • a further difference between insole 102 and midsole 104 may be, for example, the extension of tabs of the midsole further down from tabs 112a-c of the insole.
  • Fig. 8 shows shoe 100 from a bottom view.
  • This depiction relates to the invention, in which midsole 104 is actually made up of a plurality of separate U-shaped elements, such as elements 124-136, wherein the walls of the U are the erecting circumferential rim of the midsole, and the bottom of the U is the sole-shaped part of the midsole.
  • At least the bottoms of at least some of the U-shaped elements of midsole 104 are separated and attached to insole 102 in such locations, that the spaces formed between the elements match the dynamics of the foot when walking.
  • This as opposed to many conventional shoes in which the soles are only minimally-flexible and usually have the same degree of flexibility along their areas.
  • shoe 100 in general gives its wearer a feeling close to the feeling of walking barefoot. The natural, dynamic motion of different parts of the foot is only minimally affected due to the separation.
  • Outsole 106 which is also an optional layer, may include pieces, such as pieces 138-150, attached to elements 124-136, respectively, externally.
  • Outsole 106 may be made of a highly-durable material, allowing it to last throughout prolonged use.
  • a suitable material is high-density polyurethane, but other materials are possible as well.
  • a shoe may lack an outsole, and a midsole may be made of a material(s) suitable both for supporting an insole and durably interfacing with the ground.

Landscapes

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

Claims (11)

  1. Chaussure (100) comprenant :
    un corps concave défini par un bord périphérique redressé (108) ayant au moins une zone de fixation d'un pied (110) s'étendant le long d'au moins une partie de la périphérie de ce bord,
    cette zone de fixation d'un pied étant en saillie vers l'intérieur de façon à fixer un pied dans le corps concave lorsque la chaussure est portée, et
    la zone de fixation d'un pied ayant une élasticité lui permettant d'être repoussée vers l'extérieur pour recevoir un pied,
    cette chaussure étant caractérisée en ce que
    le corps concave comprend :
    une première couche (102) constituant une première intérieure et comprenant une partie en forme de semelle (106) et une première partie, interne, du bord périphérique redressé, et
    une seconde couche (104) comprenant un ensemble d'éléments en forme de U (124, 136) séparés, les branches périphériques de ces éléments en forme de U constituant des secondes parties, externes, du bord périphérique redressé, et les bases des éléments en forme de U constituant une partie en forme de semelle de la seconde couche, au moins certaines des bases étant fixées à la première couche.
  2. Chaussure (100) conforme à la revendication 1,
    dans laquelle la zone de fixation d'un pied (110) a un différentiel d'axe vertical égal à environ 0,1-2 centimètres entre la zone la plus interne et la zone la plus externe du bord.
  3. Chaussure (100) conforme à la revendication 2,
    dans laquelle la zone de fixation d'un pied (110) s'étend le long d'au moins 50% de la périphérie du bord.
  4. Chaussure (100) conforme à la revendication 3,
    dans laquelle la zone de fixation d'un pied (110) s'étend le long d'au moins 70% de la périphérie du bord.
  5. Chaussure (100) conforme à la revendication 4,
    dans laquelle la zone de fixation d'un pied (110) s'étend le long d'au moins 90% de la périphérie du bord.
  6. Chaussure (100) conforme à la revendication 1,
    dans laquelle le corps concave est constitué par une pièce de matériau unitaire.
  7. Chaussure (100) conforme à la revendication 1,
    dans laquelle la seconde couche constitue une semelle intermédiaire et le corps concave comprend en outre une troisième couche constituant une semelle d'usure et située sur la surface externe de la seconde couche.
  8. Chaussure (100) conforme à la revendication 7,
    dans laquelle la première couche est réalisée au moins partiellement en silicone ou la première couche est réalisée au moins partiellement en mousse de polyéthylène ou la seconde couche est réalisée au moins partiellement en copolymère acrylonitrile butadiène styrène (ABS).
  9. Chaussure (100) conforme à la revendication 7 ou 8,
    dans laquelle la troisième couche est réalisée au moins partiellement en silicone.
  10. Chaussure (100) conforme à la revendication 7 ou 8,
    dans laquelle la troisième couche est réalisée au moins partiellement en polyuréthane haute densité.
  11. Chaussure (100) conforme à l'une quelconque des revendications précédentes,
    dans laquelle les éléments en forme de U (124-136) sont situés à distance les uns des autres de façon à pouvoir s'adapter à la dynamique d'un pied contenu dans la chaussure au cours de la marche.
EP12846392.4A 2011-10-31 2012-09-30 Chaussure sans dessus Active EP2804501B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161553401P 2011-10-31 2011-10-31
PCT/IB2012/055231 WO2013064925A1 (fr) 2011-10-31 2012-09-30 Chaussure sans dessus

Publications (3)

Publication Number Publication Date
EP2804501A1 EP2804501A1 (fr) 2014-11-26
EP2804501A4 EP2804501A4 (fr) 2016-03-23
EP2804501B1 true EP2804501B1 (fr) 2017-05-31

Family

ID=48191447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12846392.4A Active EP2804501B1 (fr) 2011-10-31 2012-09-30 Chaussure sans dessus

Country Status (6)

Country Link
US (1) US20140305006A1 (fr)
EP (1) EP2804501B1 (fr)
JP (1) JP3196278U (fr)
AU (2) AU2012330833A1 (fr)
ES (1) ES2638494T3 (fr)
WO (1) WO2013064925A1 (fr)

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Also Published As

Publication number Publication date
EP2804501A1 (fr) 2014-11-26
EP2804501A4 (fr) 2016-03-23
ES2638494T3 (es) 2017-10-23
AU2012101910A4 (en) 2014-06-05
WO2013064925A1 (fr) 2013-05-10
JP3196278U (ja) 2015-03-05
AU2012330833A1 (en) 2014-05-22
US20140305006A1 (en) 2014-10-16

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