US20210337924A1 - Shoe sole - Google Patents
Shoe sole Download PDFInfo
- Publication number
- US20210337924A1 US20210337924A1 US17/376,274 US202117376274A US2021337924A1 US 20210337924 A1 US20210337924 A1 US 20210337924A1 US 202117376274 A US202117376274 A US 202117376274A US 2021337924 A1 US2021337924 A1 US 2021337924A1
- Authority
- US
- United States
- Prior art keywords
- reinforcing member
- sole
- opening
- shoe sole
- main structure
- 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.)
- Abandoned
Links
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 88
- 210000000452 mid-foot Anatomy 0.000 claims abstract description 34
- 210000000548 hind-foot Anatomy 0.000 claims abstract description 33
- 210000004744 fore-foot Anatomy 0.000 claims abstract description 32
- 210000002683 foot Anatomy 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 230000004913 activation Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 5
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 6
- 239000011800 void material Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009257 reactivity Effects 0.000 description 3
- 229920005983 Infinergy® Polymers 0.000 description 2
- 229920002614 Polyether block amide Polymers 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 210000001872 metatarsal bone Anatomy 0.000 description 2
- 230000007170 pathology Effects 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000007702 Metatarsalgia Diseases 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 208000010332 Plantar Fasciitis Diseases 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/12—Soles with several layers of different materials
- A43B13/125—Soles with several layers of different materials characterised by the midsole or middle layer
-
- 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
-
- 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
-
- 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
- A43B13/183—Leaf 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
- A43B13/185—Elasticated plates sandwiched between two interlocking components, e.g. thrustors
-
- 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
- A43B13/20—Pneumatic soles filled with a compressible fluid, e.g. air, gas
- A43B13/206—Pneumatic soles filled with a compressible fluid, e.g. air, gas provided with tubes or pipes or tubular shaped cushioning members
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B7/00—Footwear with health or hygienic arrangements
- A43B7/06—Footwear with health or hygienic arrangements ventilated
- A43B7/08—Footwear with health or hygienic arrangements ventilated with air-holes, with or without closures
- A43B7/084—Footwear with health or hygienic arrangements ventilated with air-holes, with or without closures characterised by the location of the holes
- A43B7/088—Footwear with health or hygienic arrangements ventilated with air-holes, with or without closures characterised by the location of the holes in the side of the sole
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B3/00—Footwear characterised by the shape or the use
- A43B3/12—Sandals; Strap guides thereon
- A43B3/128—Sandals; Strap guides thereon characterised by the sole
Definitions
- the invention relates to a shoe sole having flexibility characteristics in specific areas of the sole.
- patent U.S. Pat. No. 8,291,615 describes a sports shoe that comprises a sole formed by two opposing surfaces joined at a series of protrusions between which voids are defined.
- the technical problem addressed by the present invention is that of providing a shoe sole that is structurally and functionally designed to overcome one or more of the limitations described above with reference to the cited prior art.
- a main aim of the invention is to develop a sole capable of making optimal use of the various phases of walking, while allowing effective cushioning during the support phase.
- Another aim is to provide a shoe sole in which the stresses deriving from contact with the ground are not concentrated exclusively in the heel area or in any other single area.
- a shoe sole comprising a main structure that defines a tread surface intended to face the ground during use of the sole and opposing sides of the sole, said main structure comprising a top layer facing, in use, the sole of the foot, a bottom layer facing the ground, and a reinforcing member interposed between the top layer and the bottom layer, said reinforcing member being made of a material with greater rigidity than said bottom layer, wherein said reinforcing member comprises a front portion and a rear portion joined together by a bridging section, and wherein a forefoot through opening is defined on said front portion and a hindfoot through opening is defined on said rear portion, and wherein a midfoot through opening is defined between said bridging section and said bottom layer.
- the sole according to the present invention makes it possible to obtain an optimal distribution of the loads that occur during the foot supporting phase.
- the load generated during the supporting of the foot on the ground is distributed in a gradual manner, thus improving walking comfort.
- the sole according to the present invention has high characteristics of reactivity and, at the same time, of deformability and adaptability to the movement of the foot.
- the invention also makes it possible to make optimal use of the energy accumulated during the foot supporting phase, transforming it into a pushing action.
- the present invention also makes it possible to favor the helical movement of the foot that arises during the various phases of walking.
- the invention also makes it possible to contain the peaks of pressure on the foot and, at the same time, to provide adequate support for the metatarsal area and the lateral arch.
- the present invention makes it possible to advantageously combine characteristics of reactivity and deformability.
- the invention makes it possible to distribute the pressure of walking over a greater area of the plantar arch, reducing the risk of various pathologies.
- the present invention also relates to a shoe sole comprising a main structure that defines a tread surface intended to face the ground during use of the sole and opposing sides of the sole, said main structure comprising:
- a forefoot portion in which is defined a forefoot through opening that extends between the opposing sides;
- a midfoot portion in which is defined a midfoot through opening that extends between the opposing sides;
- a hindfoot portion in which is defined a hindfoot through opening that extends between the opposing sides;
- said forefoot, midfoot and hindfoot portions being contiguous with each other along the toe-to-heel direction and being made of an elastic material, wherein said forefoot through opening and said hindfoot through opening partially overlap said midfoot through opening.
- the sole according to the present invention makes it possible to obtain an optimal distribution of the loads that occur during the foot supporting phase.
- the load generated during the supporting of the foot on the ground is distributed in a gradual manner, thus improving walking comfort.
- the invention also makes it possible to make optimal use of the energy accumulated during the foot supporting phase, transforming it into a pushing action.
- the present invention also makes it possible to favor the helical movement of the foot that arises during the various phases of walking.
- the present invention also relates to a method for producing a sole, comprising the steps of:
- the sole according to the present invention can be produced in an automated manner without requiring any particular manual processing steps.
- FIG. 1 is a side view of a shoe sole according to the present invention
- FIG. 2 is a perspective view of the shoe sole of FIG. 1 ;
- FIG. 3 is a front view of the shoe sole of FIG. 1 ;
- FIGS. 4 to 6 are respectively a perspective view, a side view and a plan view of a reinforcing member, a feature of the shoe sole according to the present invention.
- FIG. 7 is a sectional perspective view of a variant embodiment of the shoe sole according to the present invention.
- FIG. 8 is a side view of a shoe comprising the shoe sole according to the variant of FIG. 7 ;
- FIG. 9 is a side view of a further variant embodiment of the shoe sole according to the present invention.
- FIG. 10 is a perspective view that illustrates the method for producing the shoe sole according to the present invention.
- FIG. 11 is a side view of a still further variant embodiment of the shoe sole according to the present invention.
- FIG. 12 is a perspective view that illustrates the method for producing the shoe sole according to the embodiment of FIG. 11 ;
- FIGS. 13 and 14 are respectively a side view and a perspective view of a shoe comprising the sole of the present invention according to a further embodiment
- FIG. 15 is a side view of a variant embodiment of the shoe sole according to the present invention.
- FIG. 16 is a partially sectional side view of a further variant embodiment of the shoe sole according to the present invention.
- FIGS. 17 and 18 are two side views, respectively relating to an outer side and an inner side, of a further embodiment of the shoe sole according to the present invention.
- the reference number 100 indicates overall a shoe sole produced in accordance with the present invention.
- the sole 100 extends longitudinally in a toe-to-heel direction indicated with the letter X in FIG. 1 .
- the sole 100 comprises a main structure 10 , which in turn includes a forefoot portion 2 , a midfoot portion 3 and a hindfoot portion 4 contiguous with each other along the toe-to-heel direction X.
- the main structure 10 is made of a relatively elastic material, for example a polymer material, which will be illustrated in greater detail below.
- a tread surface 1 is identified in the main structure 10 of the sole 100 .
- the term “tread surface 1 ” identifies the surface of the sole 100 intended to face the ground during use of the sole 100 , i.e. during use of a shoe comprising the sole 100 by a user. This surface may be represented by that directly in contact with the ground, or said contact may take place via the interposition of additional layers not illustrated in the figure.
- respective opposing sides 11 , 12 which comprise an inner side 11 and an outer side 12 , identified in relation to the toe-to-heel direction X of the sole 100 .
- the main structure 10 comprises a bottom layer 15 on which the tread surface 1 is defined.
- the main structure further comprises a top layer 16 facing, in use, the foot of the user.
- the top layer 16 and the bottom layer 15 are joined at a front end 17 of the sole 100 , which defines the tip, and at a rear end 18 , close to the heel.
- a reinforcing member 5 preferably made of a material with greater rigidity than the main structure 10 or, more generally, at least than the bottom layer 15 .
- the reinforcing member 5 is made of a material with a high degree of rigidity/elasticity, for example a block copolymer, such as ABS/nylon, or a polyether block amide, such as that known by the commercial name of Pebax®.
- a further alternative is represented by carbon or by a polyurethane, preferably of the compact thermoplastic type (TPU).
- TPU compact thermoplastic type
- this or these are instead made of ethylene vinyl acetate (EVA) or expanded thermoplastic polyurethane (TPU).
- EVA ethylene vinyl acetate
- TPU expanded thermoplastic polyurethane
- the reinforcing member 5 comprises a front portion 52 , arranged on the forefoot portion 2 of the sole 100 , and a rear portion 54 , arranged on the hindfoot portion 4 .
- the front portion 52 and the rear portion 54 are joined by a bridging section 53 .
- the reinforcing member 5 has an essentially flat development and extends to occupy the top layer 16 more or less completely. This makes it possible to prevent the user from noticing the presence of the reinforcing member 5 when wearing the shoe and, at the same time, can provide adequate support for the entire sole of the foot.
- a through opening 20 is defined in the reinforcing member on its front portion 52 .
- said through opening will be referred to as the “forefoot through opening 20 ”, due to its location.
- the forefoot through opening 20 extends between the opposing sides 11 , 12 of the sole 100 .
- the term “through” indicates that the opening not only passes entirely through the reinforcing member 5 but is open laterally on the opposing sides 11 , 12 of the sole 100 .
- the forefoot through opening 20 passes through the shoe in a direction transverse to that defined as the toe-to-heel direction X.
- a through opening 40 is defined in the reinforcing member 5 on its rear portion 54 .
- said through opening will be referred to as the “hindfoot through opening 40 ”, due to its location.
- the hindfoot through opening 40 extends between the opposing sides 11 , 12 of the sole 100 .
- the hindfoot through opening 40 passes through the shoe in a direction transverse to that defined as the toe-to-heel direction X.
- a midfoot through opening 30 is defined between the bridging section 53 and said bottom layer 15 when the reinforcing member 5 is placed between the bottom layer 15 and the top layer 16 .
- the bridging section 53 is preferably shaped in such a way that when the reinforcing member 5 is placed between the bottom layer 15 and the top layer 16 , said top layer is raised relative to the bottom layer 15 . In this way, the space consequently defined forms said midfoot through opening 30 .
- the bridging section 53 is arranged to support the top layer 16 , so as to provide complete support for the users foot.
- the reinforcing member 5 makes it possible to make optimal use of the forces in play during walking, absorbing energy, thanks to its flexion, in the support phase and subsequently releasing it during the extension of the foot.
- the reinforcing member 5 is formed as a single body.
- the front portion 52 and the rear portion 54 of the reinforcing member comprise a respective first transverse section 55 and a second transverse section 56 , which connect to the bridging section 53 .
- the first transverse section 55 is inclined towards the rear end of the sole 100
- the second transverse section 56 is inclined towards the front end of the sole 100 .
- the transverse sections 55 , 56 advantageously develop respectively along a direction parallel to that of the forces generated during the phase of support of the sole on the ground, and along a direction parallel to the forces released as a result of the elastic response in the phase of extension of the foot.
- the reinforcing member 5 is formed by two tubular elements, which define respectively the front portion 52 and the rear portion 54 , connected by the bridging section 53 .
- the transverse sections 55 and 56 form a wall of the tubular elements.
- this structure is created by the superposition of two shaped sheets 58 , 59 , joined at a front area 50 a, a rear area 50 b and a central area that defines the bridging section 53 , keeping the two sheets separate in the remaining areas.
- the reinforcing member 5 also comprises lightening openings 57 , of varying dimensions and orientations along the length of the reinforcing member 5 , preferably created on the shaped sheets 58 , 59 , which advantageously reduce weight, and thereby, stiffness of the reinforcing member, and allow better adhesion between the reinforcing member 5 and the top and bottom layers 15 , 16 .
- the forefoot through opening 20 , the midfoot through opening 30 and the hindfoot through opening 40 define voids between the top layer 16 and the bottom layer 15 , respectively identified on the forefoot portion 2 , the midfoot portion 3 and the hindfoot portion 4 .
- the forefoot through opening 20 and the hindfoot through opening 40 partially overlap the midfoot through opening 30 .
- the cushioning action obtained thanks to the presence of the openings can be advantageously combined with a high flexional capacity that is produced in the areas in which the openings overlap.
- the main structure 10 as a whole is affected by three through openings in total, defined by the forefoot through opening 20 , the midfoot through opening 30 and the hindfoot through opening 40 .
- the forefoot through opening 20 and the hindfoot through opening 40 partially overlap the midfoot through opening 30 along a vertical direction defined when said tread surface is supported on the ground.
- one is arranged above the other in relation to the ground on which the sole 100 is supported.
- the forefoot through opening 20 overlaps the midfoot through opening 30 at an area of transition between the forefoot portion 2 and the midfoot portion 3 .
- the hindfoot through opening 40 overlaps the midfoot through opening 30 at an area of transition between the hindfoot portion 4 and the midfoot portion 3 .
- the areas of overlap advantageously correspond to those in which a greater degree of flexion is required during the movement of walking.
- the forefoot through opening 20 and the hindfoot through opening 40 overlap the midfoot through opening 30 at respective tapered ends 22 , 42 .
- said reinforcing member 5 is completely embedded in the structure 10 .
- top layer 16 and the bottom layer 15 are also connected by means of two transverse extensions 13 , 14 , within which are embedded the transverse sections 55 , 56 .
- the reinforcing member 5 is made of compact thermoplastic polyurethane (TPU), while the bottom layer 15 is made of expanded thermoplastic polyurethane (TPU), so as to obtain a combination between materials with greater and lesser degrees of rigidity in a particularly simple constructional solution.
- TPU compact thermoplastic polyurethane
- TPU expanded thermoplastic polyurethane
- the reinforcing member 5 may not be present.
- the main structure 10 comprises a first transverse extension 13 that extends from the bottom layer 15 , at an area facing the forefoot portion 2 , to the top layer 16 at an area facing the midfoot portion 3 .
- the first transverse extension 13 is inclined towards the rear end of the sole 100 .
- the main structure 10 also comprises a second transverse extension 14 that extends from the bottom layer 15 , at an area facing the hindfoot portion 4 , to the top layer 16 at an area facing the midfoot portion 3 .
- the second transverse extension 14 is inclined towards the front end of the sole 100 .
- first and second transverse extensions 13 , 14 are connected bridge wise to the top layer 16 at the midfoot portion 3 .
- the transverse extensions 13 , 14 advantageously develop respectively along a direction parallel to that of the forces generated during the phase of support of the sole on the ground, and along a direction parallel to the forces released as a result of the elastic response in the phase of extension of the foot.
- a void which identifies in the forefoot portion 2 a forefoot through opening 20 that extends between the opposing sides 11 , 12 .
- a void which identifies in the midfoot portion 3 a midfoot through opening 30 that extends between the opposing sides 11 , 12 .
- a void which identifies in the hindfoot portion 4 a hindfoot through opening 40 that extends between the opposing sides 11 , 12 .
- the forefoot through opening 20 and the hindfoot through opening 40 preferably partially overlap the midfoot through opening 30 .
- FIG. 10 the method for producing the sole according to the present invention is illustrated.
- the reinforcing member 5 and the structure 10 are produced separately, preferably by injection molding.
- the reinforcing member 5 and the structure 10 are subsequently washed with suitable cleaning products.
- an adhesive preferably of the bi-component type, is applied to the reinforcing member 5 and the structure 10 .
- the surfaces of the reinforcing member 5 and the structure 10 intended to be joined together are coated with said bi-component adhesive.
- the structure 10 is open on the sides, and consequently it is possible to insert the reinforcing member 5 laterally, from the inner side 11 or the outer side 12 of the sole.
- the latter may be provided with coupling elements 57 a, 58 a, suitable for creating a form fit with corresponding elements defined in the structure 10 .
- said coupling elements are created by means of an extension insertable into a recess of complementary shape, created respectively on the reinforcing member 5 and the structure 10 .
- the unit formed by the structure 10 and the reinforcing member 5 is loaded into a cooling press, which is then closed, applying adequate pressure for the time necessary for the activation of the bi-component adhesive to take place.
- the presence of the lightening openings 57 allows adequate adhesion between the top and bottom layers and the reinforcing member.
- FIG. 11 shows a further variant embodiment of the sole according to the present invention, intended to be used in a shoe of the “wedge” type.
- the reinforcing member is embedded in the structure 10 , as in the embodiments of FIGS. 7 and 8 .
- the method for producing said sole is described in FIG. 12 and is generally applicable to all embodiments in which the reinforcing member 5 is embedded in the structure.
- the structure 10 is prepared by providing through openings 20 a, 30 a and 40 a on the sides 11 and 12 .
- the structure 10 is provided with a central opening 50 a, suitable for housing the reinforcing member 5 .
- TPU/PU is additionally advantageous in that it makes it possible to produce the structure 10 , already provided with the related openings, by injection molding.
- the central opening 50 a also defines a mating edge 19 on which the reinforcing member 5 can be placed in support.
- a further opening 7 a with a vertical development is also provided in the hindfoot area 4 , inside which is inserted a heel member 7 .
- the sole 100 is then assembled by placing the reinforcing member 5 , and any heel member 7 , in the corresponding openings 50 a, 7 a. Prior to their positioning, in a manner similar to the preceding embodiment, an adhesive, preferably of the bi-component type, is applied to the reinforcing member 5 and the structure 10 .
- the top layer 16 is then placed on top of the reinforcing member 5 .
- the tread surface 1 is also applied beneath the bottom layer 15 .
- the assembly of the sole 100 is then completed by loading the unit thus obtained into a cooling press, which is then closed, applying adequate pressure for the time necessary for the activation of the bi-component adhesive to take place.
- FIGS. 13 and 14 A further embodiment is illustrated in FIGS. 13 and 14 .
- the bottom layer 15 and the top layer 16 are separate and connected only by means of the reinforcing member 5 interposed between them.
- the method for producing the sole 100 provides for the interposition of the reinforcing member 5 between the bottom layer 15 and the top layer 16 and the related gluing, using technologies similar to those illustrated previously.
- the through openings 20 , 30 , 40 are defined directly in the main structure, and therefore without requiring the presence of the reinforcing member 5 .
- the top layer 16 , the bottom layer 15 and the first transverse extension 13 define a void, which identifies in the forefoot portion 2 the forefoot through opening 20 that extends between the opposing sides 11 , 12 .
- a void which identifies in the midfoot portion 3 the midfoot through opening 30 that extends between the opposing sides 11 , 12 .
- a void which identifies in the hindfoot portion 4 the hindfoot through opening 40 that extends between the opposing sides 11 , 12 .
- the reinforcing member 5 is essentially X-shaped, in such a way as to be capable of being formed as a single body and of being accommodated in the most convenient manner in the top layer 16 and in the two extensions 13 , 14 .
- the reinforcing member extends partially into the top layer 16 and into the transverse extensions 13 , 14 .
- the reinforcing member 5 is completely embedded in the top layer 16 and in the transverse extensions 13 , 14 .
- the sole 100 comprises, on the forefoot portion 2 and the hindfoot portion 4 , respective portions with relatively greater flexibility 21 , 41 at the outer side 12 .
- the midfoot portion 3 comprises a further portion with relatively greater flexibility 31 at the inner side 11 .
- the portions with relatively greater flexibility 21 , 31 , 41 are made of a material with a lower density than the rest of the main structure 10 .
- the further portion with relatively greater flexibility 31 on the midfoot portion 3 extends into the bottom layer 15 and into the extensions 13 and 14 .
- the portions with relatively greater flexibility 21 , 41 extend at the level of the bottom layer 15 .
- the shoe sole 100 makes it possible to make optimal use of the forces in play during the phases of walking.
- the forefoot opening makes it possible to advantageously define a pushing control surface
- the midfoot opening makes it possible to define a dynamic stability area
- the hindfoot opening makes it possible to define a control surface for the phases of compression, support and loading.
- the presence of the reinforcing member is particularly advantageous in that it makes it possible to transport the force accumulated during the heel supporting phase into the front area, converting it into a pushing action.
- the invention also makes it possible to contain the peaks of pressure on the foot and, at the same time, to provide adequate support for the metatarsal area and the lateral arch, thanks to the presence of the reinforcing member, which makes it possible to increase the support, combined with the presence of the openings 20 , 30 , 40 that offset said effect of the reinforcing member.
- the reactivity supplied by the reinforcing member is advantageously combined with the deformability of the structure.
- This combination of characteristics also makes it possible to distribute the pressure over a larger area of the plantar arch, favoring a reduction in the risk of metatarsalgia, plantar fasciitis and other pathologies.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Shoe sole comprising a main structure that defines a tread surface and opposing sides of the sole, said main structure comprising a top layer facing, in use, the sole of the foot, a bottom layer facing the ground, and a reinforcing member interposed between said top and bottom layers. The reinforcing member is made of a material with greater rigidity than the bottom layer, and comprises a front portion and a rear portion joined together by a bridging section. A forefoot through opening is defined on the front portion and a hindfoot through opening is defined on the rear portion, in such a way that a midfoot through opening is defined between the bridging section and the bottom layer.
Description
- The Present application is a Continuation of 16/085,045, filed Sep. 14, 2018, which is a § 371 U.S. National Phase of PCT/IB2016/054610, filed Aug. 1, 2016, which claims priority of Italian patent application number 102016000080668, filed Aug. 1, 2016 and Italian patent application number 102016000027822, filed Mar. 16, 2016, the entire contents of all of which are incorporated by reference herein as if fully set forth.
- The invention relates to a shoe sole having flexibility characteristics in specific areas of the sole.
- It is known to use shoe soles that have a series of openings that develop over the entire width in order to increase the flexibility characteristics in specific areas of the sole.
- For example, patent U.S. Pat. No. 8,291,615 describes a sports shoe that comprises a sole formed by two opposing surfaces joined at a series of protrusions between which voids are defined.
- These voids make it possible to increase the cushioning effect while the sole is in contact with the ground.
- However, in these shoes the forces generated during the support phase are dissipated only with the deformation of the sole, whereas it would be desirable to obtain a more uniform distribution of the loads, so as to make optimal use of the forces in play during walking.
- The technical problem addressed by the present invention is that of providing a shoe sole that is structurally and functionally designed to overcome one or more of the limitations described above with reference to the cited prior art.
- In the context of the above-mentioned problem, a main aim of the invention is to develop a sole capable of making optimal use of the various phases of walking, while allowing effective cushioning during the support phase.
- Another aim is to provide a shoe sole in which the stresses deriving from contact with the ground are not concentrated exclusively in the heel area or in any other single area.
- This problem is solved and these aims are achieved by the present invention by means of a shoe sole comprising a main structure that defines a tread surface intended to face the ground during use of the sole and opposing sides of the sole, said main structure comprising a top layer facing, in use, the sole of the foot, a bottom layer facing the ground, and a reinforcing member interposed between the top layer and the bottom layer, said reinforcing member being made of a material with greater rigidity than said bottom layer, wherein said reinforcing member comprises a front portion and a rear portion joined together by a bridging section, and wherein a forefoot through opening is defined on said front portion and a hindfoot through opening is defined on said rear portion, and wherein a midfoot through opening is defined between said bridging section and said bottom layer.
- Preferred features of the invention are defined in the dependent claims.
- The sole according to the present invention makes it possible to obtain an optimal distribution of the loads that occur during the foot supporting phase.
- In addition, the load generated during the supporting of the foot on the ground is distributed in a gradual manner, thus improving walking comfort.
- In addition, the sole according to the present invention has high characteristics of reactivity and, at the same time, of deformability and adaptability to the movement of the foot.
- According to preferred aspects, the invention also makes it possible to make optimal use of the energy accumulated during the foot supporting phase, transforming it into a pushing action.
- According to further aspects, the present invention also makes it possible to favor the helical movement of the foot that arises during the various phases of walking.
- According to other aspects, the invention also makes it possible to contain the peaks of pressure on the foot and, at the same time, to provide adequate support for the metatarsal area and the lateral arch.
- According to still further aspects, the present invention makes it possible to advantageously combine characteristics of reactivity and deformability.
- According to other aspects, the invention makes it possible to distribute the pressure of walking over a greater area of the plantar arch, reducing the risk of various pathologies.
- According to a further aspect, the present invention also relates to a shoe sole comprising a main structure that defines a tread surface intended to face the ground during use of the sole and opposing sides of the sole, said main structure comprising:
- a forefoot portion in which is defined a forefoot through opening that extends between the opposing sides;
- a midfoot portion in which is defined a midfoot through opening that extends between the opposing sides;
- a hindfoot portion in which is defined a hindfoot through opening that extends between the opposing sides;
- said forefoot, midfoot and hindfoot portions being contiguous with each other along the toe-to-heel direction and being made of an elastic material, wherein said forefoot through opening and said hindfoot through opening partially overlap said midfoot through opening.
- The sole according to the present invention makes it possible to obtain an optimal distribution of the loads that occur during the foot supporting phase.
- In addition, the load generated during the supporting of the foot on the ground is distributed in a gradual manner, thus improving walking comfort.
- According to preferred aspects, the invention also makes it possible to make optimal use of the energy accumulated during the foot supporting phase, transforming it into a pushing action.
- According to further aspects, the present invention also makes it possible to favor the helical movement of the foot that arises during the various phases of walking.
- According to a further aspect, the present invention also relates to a method for producing a sole, comprising the steps of:
- providing a main structure;
- providing a reinforcing member;
- placing the reinforcing member between the top layer and the bottom layer;
- joining the reinforcing member to the top layer and the bottom layer.
- According to this aspect, the sole according to the present invention can be produced in an automated manner without requiring any particular manual processing steps.
- The features and advantages of the invention will become clearer from the following detailed description of two embodiments illustrated by way of non-limitative example with reference to the accompanying drawings, in which:
-
FIG. 1 is a side view of a shoe sole according to the present invention; -
FIG. 2 is a perspective view of the shoe sole ofFIG. 1 ; -
FIG. 3 is a front view of the shoe sole ofFIG. 1 ; -
FIGS. 4 to 6 are respectively a perspective view, a side view and a plan view of a reinforcing member, a feature of the shoe sole according to the present invention; -
FIG. 7 is a sectional perspective view of a variant embodiment of the shoe sole according to the present invention; -
FIG. 8 is a side view of a shoe comprising the shoe sole according to the variant ofFIG. 7 ; -
FIG. 9 is a side view of a further variant embodiment of the shoe sole according to the present invention; -
FIG. 10 is a perspective view that illustrates the method for producing the shoe sole according to the present invention; -
FIG. 11 is a side view of a still further variant embodiment of the shoe sole according to the present invention; -
FIG. 12 is a perspective view that illustrates the method for producing the shoe sole according to the embodiment ofFIG. 11 ; -
FIGS. 13 and 14 are respectively a side view and a perspective view of a shoe comprising the sole of the present invention according to a further embodiment; -
FIG. 15 is a side view of a variant embodiment of the shoe sole according to the present invention; -
FIG. 16 is a partially sectional side view of a further variant embodiment of the shoe sole according to the present invention; and -
FIGS. 17 and 18 are two side views, respectively relating to an outer side and an inner side, of a further embodiment of the shoe sole according to the present invention. - With reference initially to
FIG. 1 , thereference number 100 indicates overall a shoe sole produced in accordance with the present invention. - The sole 100 extends longitudinally in a toe-to-heel direction indicated with the letter X in
FIG. 1 . - The sole 100 comprises a
main structure 10, which in turn includes aforefoot portion 2, amidfoot portion 3 and ahindfoot portion 4 contiguous with each other along the toe-to-heel direction X. - Preferably, the
main structure 10 is made of a relatively elastic material, for example a polymer material, which will be illustrated in greater detail below. - Again, with reference to
FIG. 1 , atread surface 1 is identified in themain structure 10 of the sole 100. - In the context of the present invention, the term “
tread surface 1” identifies the surface of the sole 100 intended to face the ground during use of the sole 100, i.e. during use of a shoe comprising the sole 100 by a user. This surface may be represented by that directly in contact with the ground, or said contact may take place via the interposition of additional layers not illustrated in the figure. - In the sole 100 are also identified respective
opposing sides inner side 11 and anouter side 12, identified in relation to the toe-to-heel direction X of the sole 100. - According to a preferred embodiment, the
main structure 10 comprises abottom layer 15 on which thetread surface 1 is defined. - Preferably, the main structure further comprises a
top layer 16 facing, in use, the foot of the user. - According to a preferred embodiment, the
top layer 16 and thebottom layer 15 are joined at afront end 17 of the sole 100, which defines the tip, and at arear end 18, close to the heel. - In one embodiment, between the
top layer 16 and thebottom layer 15 is provided a reinforcingmember 5, preferably made of a material with greater rigidity than themain structure 10 or, more generally, at least than thebottom layer 15. - Preferably, the reinforcing
member 5 is made of a material with a high degree of rigidity/elasticity, for example a block copolymer, such as ABS/nylon, or a polyether block amide, such as that known by the commercial name of Pebax®. A further alternative is represented by carbon or by a polyurethane, preferably of the compact thermoplastic type (TPU). However, it is clear that these materials are cited purely by way of example and that further alternatives can be also provided. - In order to ensure that the reinforcing member has greater rigidity than the
bottom layer 15 and/or thetop layer 16, this or these are instead made of ethylene vinyl acetate (EVA) or expanded thermoplastic polyurethane (TPU). - According to a preferred embodiment, as illustrated more clearly in
FIG. 4 , the reinforcingmember 5 comprises afront portion 52, arranged on theforefoot portion 2 of the sole 100, and arear portion 54, arranged on thehindfoot portion 4. - Preferably, the
front portion 52 and therear portion 54 are joined by abridging section 53. - In a preferred embodiment, the reinforcing
member 5 has an essentially flat development and extends to occupy thetop layer 16 more or less completely. This makes it possible to prevent the user from noticing the presence of the reinforcingmember 5 when wearing the shoe and, at the same time, can provide adequate support for the entire sole of the foot. - With reference to
FIGS. 1 and 4 , a throughopening 20 is defined in the reinforcing member on itsfront portion 52. Hereinafter, said through opening will be referred to as the “forefoot through opening 20”, due to its location. - According to a preferred embodiment, the forefoot through opening 20 extends between the opposing
sides - It should also be noted that the term “through” indicates that the opening not only passes entirely through the reinforcing
member 5 but is open laterally on the opposingsides - In one embodiment, a through
opening 40 is defined in the reinforcingmember 5 on itsrear portion 54. Hereinafter, said through opening will be referred to as the “hindfoot throughopening 40”, due to its location. - According to a preferred embodiment, the hindfoot through
opening 40 extends between the opposingsides - Preferably, a midfoot through
opening 30 is defined between the bridgingsection 53 and saidbottom layer 15 when the reinforcingmember 5 is placed between thebottom layer 15 and thetop layer 16. - As can be seen from
FIG. 1 , thebridging section 53 is preferably shaped in such a way that when the reinforcingmember 5 is placed between thebottom layer 15 and thetop layer 16, said top layer is raised relative to thebottom layer 15. In this way, the space consequently defined forms said midfoot throughopening 30. - Preferably, the
bridging section 53 is arranged to support thetop layer 16, so as to provide complete support for the users foot. - In this way, the reinforcing
member 5 makes it possible to make optimal use of the forces in play during walking, absorbing energy, thanks to its flexion, in the support phase and subsequently releasing it during the extension of the foot. - Preferably, the reinforcing
member 5 is formed as a single body. - According to a preferred embodiment, the
front portion 52 and therear portion 54 of the reinforcing member comprise a respective firsttransverse section 55 and a secondtransverse section 56, which connect to thebridging section 53. - Preferably, the first
transverse section 55 is inclined towards the rear end of the sole 100, while the secondtransverse section 56 is inclined towards the front end of the sole 100. - Thanks to the above-mentioned arrangement, the
transverse sections - Preferably, the reinforcing
member 5 is formed by two tubular elements, which define respectively thefront portion 52 and therear portion 54, connected by thebridging section 53. In one embodiment, thetransverse sections - With reference to
FIG. 5 , in one embodiment, this structure is created by the superposition of two shapedsheets front area 50 a, a rear area 50 b and a central area that defines thebridging section 53, keeping the two sheets separate in the remaining areas. - As illustrated in
FIG. 6 , according to a preferred embodiment, the reinforcingmember 5 also comprises lighteningopenings 57, of varying dimensions and orientations along the length of the reinforcingmember 5, preferably created on the shapedsheets member 5 and the top andbottom layers - With reference once again to
FIG. 1 , the forefoot throughopening 20, the midfoot throughopening 30 and the hindfoot throughopening 40 define voids between thetop layer 16 and thebottom layer 15, respectively identified on theforefoot portion 2, themidfoot portion 3 and thehindfoot portion 4. - Preferably, in the sole according to the present invention, the forefoot through
opening 20 and the hindfoot throughopening 40 partially overlap the midfoot throughopening 30. - In this way, the cushioning action obtained thanks to the presence of the openings can be advantageously combined with a high flexional capacity that is produced in the areas in which the openings overlap.
- In one embodiment, the
main structure 10 as a whole is affected by three through openings in total, defined by the forefoot throughopening 20, the midfoot throughopening 30 and the hindfoot throughopening 40. - In this way, maximum flexibility of the sole can be obtained without sacrificing the cushioning effect during the phase of support and the release of forces during the extension of the foot.
- In addition, a gradual distribution of the load is ensured.
- Preferably, the forefoot through
opening 20 and the hindfoot throughopening 40 partially overlap the midfoot through opening 30 along a vertical direction defined when said tread surface is supported on the ground. In other words, one is arranged above the other in relation to the ground on which the sole 100 is supported. - According to a preferred embodiment, the forefoot through opening 20 overlaps the midfoot through opening 30 at an area of transition between the
forefoot portion 2 and themidfoot portion 3. In parallel, the hindfoot throughopening 40 overlaps the midfoot through opening 30 at an area of transition between thehindfoot portion 4 and themidfoot portion 3. - In this way, the areas of overlap advantageously correspond to those in which a greater degree of flexion is required during the movement of walking.
- Preferably, with the aim of providing the structure with a high degree of strength, the forefoot through
opening 20 and the hindfoot throughopening 40 overlap the midfoot through opening 30 at respective tapered ends 22, 42. - According to an alternative embodiment, illustrated in
FIGS. 7 and 8 , said reinforcingmember 5 is completely embedded in thestructure 10. - In this embodiment, the
top layer 16 and thebottom layer 15 are also connected by means of twotransverse extensions transverse sections - This advantageously makes it possible to conceal from view the presence of the reinforcing
member 5, to the benefit of the aesthetic qualities of the sole 100. - In another embodiment, illustrated in
FIG. 9 , the reinforcingmember 5 is made of compact thermoplastic polyurethane (TPU), while thebottom layer 15 is made of expanded thermoplastic polyurethane (TPU), so as to obtain a combination between materials with greater and lesser degrees of rigidity in a particularly simple constructional solution. - In a further variant embodiment, which defines a further aspect of the present invention, the reinforcing
member 5 may not be present. - In this embodiment, the
main structure 10 comprises a firsttransverse extension 13 that extends from thebottom layer 15, at an area facing theforefoot portion 2, to thetop layer 16 at an area facing themidfoot portion 3. In other words, the firsttransverse extension 13 is inclined towards the rear end of the sole 100. - In a preferred embodiment, the
main structure 10 also comprises a secondtransverse extension 14 that extends from thebottom layer 15, at an area facing thehindfoot portion 4, to thetop layer 16 at an area facing themidfoot portion 3. In other words, the secondtransverse extension 14 is inclined towards the front end of the sole 100. - Preferably, the first and second
transverse extensions top layer 16 at themidfoot portion 3. - Thanks to the above-mentioned arrangement, the
transverse extensions - In one embodiment, between the
top layer 16, thebottom layer 15 and the firsttransverse extension 13 is defined a void, which identifies in the forefoot portion 2 a forefoot through opening 20 that extends between the opposingsides - Preferably, between the
top layer 16, thebottom layer 15 and the twotransverse extensions sides - Preferably, also between the
top layer 16, thebottom layer 15 and the secondtransverse extension 14 is defined a void, which identifies in the hindfoot portion 4 a hindfoot throughopening 40 that extends between the opposingsides - As illustrated for the other embodiments, the forefoot through
opening 20 and the hindfoot throughopening 40 preferably partially overlap the midfoot throughopening 30. - With reference now to
FIG. 10 , the method for producing the sole according to the present invention is illustrated. - The reinforcing
member 5 and thestructure 10 are produced separately, preferably by injection molding. - Preferably, the reinforcing
member 5 and thestructure 10 are subsequently washed with suitable cleaning products. - According to a preferred embodiment, an adhesive, preferably of the bi-component type, is applied to the reinforcing
member 5 and thestructure 10. Preferably, the surfaces of the reinforcingmember 5 and thestructure 10 intended to be joined together are coated with said bi-component adhesive. - The
structure 10 is open on the sides, and consequently it is possible to insert the reinforcingmember 5 laterally, from theinner side 11 or theouter side 12 of the sole. - Preferably, in order to favor the correct positioning of the reinforcing
member 5, the latter may be provided withcoupling elements structure 10. - In one embodiment, said coupling elements are created by means of an extension insertable into a recess of complementary shape, created respectively on the reinforcing
member 5 and thestructure 10. - The unit formed by the
structure 10 and the reinforcingmember 5 is loaded into a cooling press, which is then closed, applying adequate pressure for the time necessary for the activation of the bi-component adhesive to take place. - In this phase, the presence of the lightening
openings 57 allows adequate adhesion between the top and bottom layers and the reinforcing member. -
FIG. 11 shows a further variant embodiment of the sole according to the present invention, intended to be used in a shoe of the “wedge” type. - In this case, the reinforcing member is embedded in the
structure 10, as in the embodiments ofFIGS. 7 and 8 . - The method for producing said sole is described in
FIG. 12 and is generally applicable to all embodiments in which the reinforcingmember 5 is embedded in the structure. - The
structure 10 is prepared by providing throughopenings sides - In addition, the
structure 10 is provided with acentral opening 50 a, suitable for housing the reinforcingmember 5. - In this case, the use of TPU/PU is additionally advantageous in that it makes it possible to produce the
structure 10, already provided with the related openings, by injection molding. - Preferably, the
central opening 50 a also defines amating edge 19 on which the reinforcingmember 5 can be placed in support. - In one embodiment, a
further opening 7 a with a vertical development is also provided in thehindfoot area 4, inside which is inserted aheel member 7. - The sole 100 is then assembled by placing the reinforcing
member 5, and anyheel member 7, in the correspondingopenings member 5 and thestructure 10. - According to a preferred embodiment, the
top layer 16 is then placed on top of the reinforcingmember 5. Preferably, thetread surface 1 is also applied beneath thebottom layer 15. - The assembly of the sole 100 is then completed by loading the unit thus obtained into a cooling press, which is then closed, applying adequate pressure for the time necessary for the activation of the bi-component adhesive to take place.
- A further embodiment is illustrated in
FIGS. 13 and 14 . - According to this embodiment, the
bottom layer 15 and thetop layer 16 are separate and connected only by means of the reinforcingmember 5 interposed between them. - In this case, the method for producing the sole 100 provides for the interposition of the reinforcing
member 5 between thebottom layer 15 and thetop layer 16 and the related gluing, using technologies similar to those illustrated previously. - In a still further variant embodiment, illustrated in
FIG. 15 , the throughopenings member 5. - In this embodiment, the
top layer 16, thebottom layer 15 and the firsttransverse extension 13 define a void, which identifies in theforefoot portion 2 the forefoot through opening 20 that extends between the opposingsides - Preferably, between the
top layer 16, thebottom layer 15 and the twotransverse extensions midfoot portion 3 the midfoot through opening 30 that extends between the opposingsides - Preferably, also between the
top layer 16, thebottom layer 15 and the secondtransverse extension 14 is defined a void, which identifies in thehindfoot portion 4 the hindfoot throughopening 40 that extends between the opposingsides - According to a further embodiment, illustrated in
FIG. 16 , the reinforcingmember 5 is essentially X-shaped, in such a way as to be capable of being formed as a single body and of being accommodated in the most convenient manner in thetop layer 16 and in the twoextensions - More generally, preferably the reinforcing member extends partially into the
top layer 16 and into thetransverse extensions - In this way, sufficient robustness and flexibility of the reinforcing
member 5 can be ensured while occupying a very small portion of themain structure 10. - Preferably, the reinforcing
member 5 is completely embedded in thetop layer 16 and in thetransverse extensions - This advantageously makes it possible to conceal from view the presence of the reinforcing
member 5, to the benefit of the aesthetic qualities of the sole 100. - According to a further embodiment, illustrated in
FIGS. 17 and 18 , the sole 100 comprises, on theforefoot portion 2 and thehindfoot portion 4, respective portions with relativelygreater flexibility outer side 12. - Preferably, the
midfoot portion 3 comprises a further portion with relativelygreater flexibility 31 at theinner side 11. - In this way, it is possible to favor the helical movement of the foot during the phases of walking, without compromising the overall characteristics of robustness and aesthetic quality of the sole.
- In one embodiment, the portions with relatively
greater flexibility main structure 10. - Preferably, as can be seen from
FIG. 17 , the further portion with relativelygreater flexibility 31 on themidfoot portion 3 extends into thebottom layer 15 and into theextensions - As illustrated in
FIG. 18 , according to one embodiment, the portions with relativelygreater flexibility bottom layer 15. - It is evident that this embodiment can be advantageously combined with the presence of the reinforcing
member 5. - Thanks to the characteristics of the invention, the
shoe sole 100 makes it possible to make optimal use of the forces in play during the phases of walking. - In particular, the forefoot opening makes it possible to advantageously define a pushing control surface, while the midfoot opening makes it possible to define a dynamic stability area and the hindfoot opening makes it possible to define a control surface for the phases of compression, support and loading.
- In addition, the presence of the reinforcing member is particularly advantageous in that it makes it possible to transport the force accumulated during the heel supporting phase into the front area, converting it into a pushing action.
- The invention also makes it possible to contain the peaks of pressure on the foot and, at the same time, to provide adequate support for the metatarsal area and the lateral arch, thanks to the presence of the reinforcing member, which makes it possible to increase the support, combined with the presence of the
openings - In addition, the reactivity supplied by the reinforcing member is advantageously combined with the deformability of the structure.
- This combination of characteristics also makes it possible to distribute the pressure over a larger area of the plantar arch, favoring a reduction in the risk of metatarsalgia, plantar fasciitis and other pathologies.
Claims (21)
1. Shoe sole (100) comprising:
a reinforcing member (5) comprising a front portion (52) and a rear portion (54) joined together by a bridging section (53), and a forefoot through opening (20), defined in said front portion (52), and a hindfoot through opening (40) defined in said rear portion (54); and
a main structure (10) that defines a tread surface (1) and opposing sides (11, 12) of the sole (100), said main structure (10) comprising a top layer (16) facing, in use, the sole of a user's foot, and a bottom layer (15) facing the ground, the top layer (16) and the bottom layer (15) are joined at a front end (17) of the sole (100) and at a rear end (18) of the sole (100),
said reinforcing member (5) being interposed between said top layer (16) and said bottom layer (15), said reinforcing member (5) being made of a material with greater rigidity than said bottom layer (15), wherein said reinforcing member (5) further comprises a plurality of openings (57), of varying dimensions and/or orientations, extending longitudinally along the reinforcing member.
2. The shoe sole (100) according to claim 1 , wherein said reinforcing member (5) is formed as a single body.
3. The shoe sole (100) according to claim 1 , wherein the reinforcing member (5) is formed as a single body having an X-shape.
4. The shoe sole (100) according to claim 1 , wherein the plurality of openings (57) serve to reduce stiffness of the reinforcing member (5).
5. The shoe sole (100) according to claim 1 , wherein said reinforcing member (5) is completely received in said main structure (10).
6. The shoe sole (100) according to claim 1 , wherein said reinforcing member (5) has an essentially flat development and extends to occupy the top layer (16) substantially completely.
7. The shoe sole (100) according to claim 1 , further comprising a midfoot through opening (30) defined between said bridging section (53).
8. The shoe sole (100) according to claim 7 , wherein said forefoot through opening (20) and said hindfoot through opening (40) partially overlap said midfoot through opening (30) along a vertical direction defined when said tread surface is supported on the ground.
9. Shoe sole (100) comprising:
a reinforcing member (5) comprising a front portion (52) and a rear portion (54) joined together by a bridging section (53); and
a main structure (10) that defines a tread surface (1) and opposing sides (11, 12) of the sole (100), said main structure (10) comprising a top layer (16) facing, in use, the sole of a user's foot, and a bottom layer (15) facing the ground, the top layer (16) and the bottom layer (15) are joined at a front end (17) of the sole (100) and at a rear end (18) of the sole (100), the main structure further comprises a forefoot through opening (20), at said front portion (52), and a hindfoot through opening (40) at said rear portion (54);
said reinforcing member (5) being interposed between said top layer (16) and said bottom layer (15), said reinforcing member (5) being made of a material with greater rigidity than said bottom layer (15), wherein said reinforcing member (5) further comprises a plurality of openings (57), of varying dimensions and/or orientations, extending longitudinally along the reinforcing member.
10. The shoe sole (100) according to claim 9 , wherein said reinforcing member (5) is formed as a single body.
11. The shoe sole (100) according to claim 9 , wherein the reinforcing member (5) is formed as a single body having an X-shape.
12. The shoe sole (100) according to claim 9 , wherein the plurality of openings (57) serve to reduce stiffness of the reinforcing member (5).
13. The shoe sole (100) according to claim 9 , wherein said reinforcing member (5) is completely received in said main structure (10).
14. The shoe sole (100) according to claim 9 , wherein said reinforcing member (5) has an essentially flat development and extends to occupy the top layer (16) substantially completely.
15. The shoe sole (100) according to claim 9 , further comprising a midfoot through opening (30) defined between said bridging section (53).
16. The shoe sole (100) according to claim 15 , wherein said forefoot through opening (20) and said hindfoot through opening (40) partially overlap said midfoot through opening (30) along a vertical direction defined when said tread surface is supported on the ground.
17. A method for preparing a shoe sole (100) comprising:
providing a main structure (10) that defines a tread surface (1) and opposing sides (11, 12) of the sole (100), said main structure (10) comprising a top layer (16) facing, in use, the sole of a user's foot, and a bottom layer (15) facing the ground;
providing a reinforcing member (5) comprising a front portion (52) and a rear portion (54) joined together by a bridging section (53), and a forefoot through opening (20), defined in said front portion (52), and a hindfoot through opening (40) defined in said rear portion (54), the reinforcing member further comprising a plurality of openings (57), of varying dimensions and/or orientations, extending longitudinally along the reinforcing member;
applying a bi-component adhesive to the main structure (10) and the reinforcing member (5);
inserting the reinforcing member (5) into the main structure (10) laterally, from the inner side (11) or the outer side (12) of the sole.
18. The method according to claim 17 , further comprising:
loading the main structure (10) with the reinforcing member (5) inserted therein into a cooling press;
closing the press and, applying adequate pressure for a time sufficient for activation of the bi-component adhesive.
19. The method according to claim 17 , wherein the bottom layer (15) and the top layer (16) are separate and connected only by means of the reinforcing member (5) interposed between them.
20. The method according to claim 17 , wherein the top layer (16) and the bottom layer (15) are joined at a front end (17) of the sole (100) and at a rear end (18) of the sole (100).
21. The method according to claim 18 , wherein the plurality of openings (57) receive portions of the top and bottom layers (15, 16) therein, when the pressure is applied in the press.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/376,274 US20210337924A1 (en) | 2016-03-16 | 2021-07-15 | Shoe sole |
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITUA2016A001739A ITUA20161739A1 (en) | 2016-03-16 | 2016-03-16 | Sole for footwear |
IT102016000027822 | 2016-03-16 | ||
IT102016000080668 | 2016-08-01 | ||
PCT/IB2016/054610 WO2017158408A1 (en) | 2016-03-16 | 2016-08-01 | Shoe sole |
IT102016000080668A IT201600080668A1 (en) | 2016-08-01 | 2016-08-01 | SOLE FOR FOOTWEAR |
US201816085045A | 2018-09-14 | 2018-09-14 | |
US17/376,274 US20210337924A1 (en) | 2016-03-16 | 2021-07-15 | Shoe sole |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/085,045 Continuation US20190104805A1 (en) | 2016-03-16 | 2016-08-01 | Shoe sole |
PCT/IB2016/054610 Continuation WO2017158408A1 (en) | 2016-03-16 | 2016-08-01 | Shoe sole |
Publications (1)
Publication Number | Publication Date |
---|---|
US20210337924A1 true US20210337924A1 (en) | 2021-11-04 |
Family
ID=57003535
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/085,045 Abandoned US20190104805A1 (en) | 2016-03-16 | 2016-08-01 | Shoe sole |
US17/376,274 Abandoned US20210337924A1 (en) | 2016-03-16 | 2021-07-15 | Shoe sole |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US16/085,045 Abandoned US20190104805A1 (en) | 2016-03-16 | 2016-08-01 | Shoe sole |
Country Status (5)
Country | Link |
---|---|
US (2) | US20190104805A1 (en) |
JP (1) | JP6995826B2 (en) |
CA (1) | CA3017812A1 (en) |
RU (1) | RU2710629C1 (en) |
WO (1) | WO2017158408A1 (en) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110573038B (en) * | 2017-04-21 | 2021-10-01 | 耐克创新有限合伙公司 | Sole structure with proprioceptive element and method for manufacturing sole structure |
IT201800003360A1 (en) * | 2018-03-09 | 2019-09-09 | Gregorio Farolfi | MIDSOLE FOR FOOTWEAR WITH IMPACT ABSORPTION AND PROPULSIVE FOOT SYSTEM |
IT201800006257A1 (en) * | 2018-06-12 | 2019-12-12 | Sole for footwear | |
US10966482B2 (en) | 2018-10-12 | 2021-04-06 | Deckers Outdoor Corporation | Footwear with stabilizing sole |
US11723428B2 (en) | 2018-10-12 | 2023-08-15 | Deckers Outdoor Corporation | Footwear with stabilizing sole |
US11730228B2 (en) * | 2018-10-12 | 2023-08-22 | Deckers Outdoor Corporation | Footwear with stabilizing sole |
US11324280B2 (en) * | 2018-10-24 | 2022-05-10 | Bivab Llc | Rotatable midsole ambulatory footwear apparatus |
USD885022S1 (en) | 2019-01-30 | 2020-05-26 | S9, Llc | Footwear arch support |
USD876764S1 (en) * | 2019-02-22 | 2020-03-03 | Nike, Inc. | Shoe |
USD876762S1 (en) * | 2019-02-22 | 2020-03-03 | Nike, Inc. | Shoe |
USD876763S1 (en) * | 2019-02-22 | 2020-03-03 | Nike, Inc. | Shoe |
USD876768S1 (en) * | 2019-04-19 | 2020-03-03 | Nike, Inc. | Shoe |
USD876769S1 (en) * | 2019-04-19 | 2020-03-03 | Nike, Inc. | Shoe |
EP3965605A4 (en) * | 2019-05-08 | 2023-01-04 | Scholl's Wellness Company LLC | Flexible arch support for footwear |
USD901143S1 (en) * | 2019-05-24 | 2020-11-10 | Nike, Inc. | Shoe |
USD1025584S1 (en) | 2019-06-25 | 2024-05-07 | Nike, Inc. | Shoe |
USD905394S1 (en) | 2019-08-16 | 2020-12-22 | Nike, Inc. | Shoe |
USD901146S1 (en) | 2019-08-16 | 2020-11-10 | Nike, Inc. | Shoe |
USD958499S1 (en) | 2020-04-24 | 2022-07-26 | Clove Brand, Inc. | Sneaker |
USD944503S1 (en) * | 2020-04-24 | 2022-03-01 | Clove Brand, Inc. | Periphery of an outsole |
USD919263S1 (en) * | 2020-07-29 | 2021-05-18 | Pierre Balmain S.A.S. | Footwear |
EP4225093A1 (en) * | 2020-10-07 | 2023-08-16 | NIKE Innovate C.V. | Article of footwear with removably secured mechanical cushioning |
USD988643S1 (en) * | 2020-12-01 | 2023-06-13 | New Balance Athletics, Inc. | Article of footwear |
JP2024060112A (en) * | 2021-03-04 | 2024-05-02 | 株式会社サカガワ | Sandal |
JP7225296B2 (en) * | 2021-03-31 | 2023-02-20 | 美津濃株式会社 | Sole structure and shoes using the same |
JP7246665B1 (en) * | 2021-07-01 | 2023-03-28 | 株式会社タイカ | shoes |
US11633007B2 (en) * | 2021-07-25 | 2023-04-25 | Deckers Outdoor Corporation | Sole including a support member |
WO2023198525A1 (en) * | 2022-04-14 | 2023-10-19 | On Clouds Gmbh | Laterally and medially flexible midsole |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7434337B2 (en) * | 2002-09-09 | 2008-10-14 | The Zebra Company | Footwear item comprising built-in dynamic element |
US8051583B2 (en) * | 2007-09-06 | 2011-11-08 | Nike, Inc. | Article of footwear with improved stability and balance |
Family Cites Families (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4551930A (en) * | 1983-09-23 | 1985-11-12 | New Balance Athletic Shoe, Inc. | Sole construction for footwear |
US4881329A (en) * | 1988-09-14 | 1989-11-21 | Wilson Sporting Goods Co. | Athletic shoe with energy storing spring |
JPH0777563B2 (en) * | 1991-02-08 | 1995-08-23 | 美津濃株式会社 | Insert reinforcing member having a design portion and shoe sole |
US5921004A (en) * | 1995-06-07 | 1999-07-13 | Nike, Inc. | Footwear with stabilizers |
JP3022670U (en) * | 1995-09-14 | 1996-03-26 | 株式会社永昌産業 | Insole of footwear |
TW446618B (en) * | 1997-12-31 | 2001-07-21 | Park Young Soul | The outsole of a shoe, in which throughout holes are formed to be passed through a lateral surface, its manufacturing method, and its molding |
TW351926U (en) * | 1998-02-27 | 1999-02-01 | Yan-Yu Li | Bounce spots shoes |
US6964119B2 (en) * | 2001-06-08 | 2005-11-15 | Weaver Iii Robert B | Footwear with impact absorbing system |
DE10212862C1 (en) * | 2002-03-22 | 2003-10-30 | Adidas Int Marketing Bv | Sole and shoe |
DE20206927U1 (en) * | 2002-05-01 | 2003-09-04 | PUMA Aktiengesellschaft Rudolf Dassler Sport, 91074 Herzogenaurach | Damping element for a shoe |
US6745499B2 (en) * | 2002-05-24 | 2004-06-08 | Reebok International Ltd. | Shoe sole having a resilient insert |
JP4038391B2 (en) * | 2002-05-29 | 2008-01-23 | 美津濃株式会社 | Sole structure of sports shoes |
ITPN20030018A1 (en) | 2003-03-04 | 2004-09-05 | Gilda Design Di Vania Cadamuro | DAMPING ELEMENT WITH CORRUGATED CONFORMATION. |
KR200361990Y1 (en) | 2004-06-17 | 2004-09-13 | (주) 스트라스 | shoes for absorbing sock |
CN106923439A (en) * | 2005-02-24 | 2017-07-07 | 格莱登制锁股份公司 | Outer bottom with tangential deformation ability |
US7900376B2 (en) * | 2006-03-17 | 2011-03-08 | Mitchell Gary Rabushka | Shoe spring and shock absorbing system |
US7665229B2 (en) * | 2006-03-31 | 2010-02-23 | Converse Inc. | Foot-supporting structures for articles of footwear and other foot-receiving devices |
US7707751B2 (en) * | 2006-06-16 | 2010-05-04 | Schering-Plough Healthcare Products, Inc. | Adjustable orthotic |
JP4153002B2 (en) * | 2006-08-30 | 2008-09-17 | 美津濃株式会社 | Middle foot structure of shoe sole assembly |
US20090145004A1 (en) * | 2007-12-05 | 2009-06-11 | Saucony, Inc. | Stabilizer and cushioning support for athletic footwear |
JP4388580B2 (en) * | 2008-03-28 | 2009-12-24 | 美津濃株式会社 | Insole structure for sports shoes |
KR200443485Y1 (en) * | 2008-08-26 | 2009-03-09 | (주)강남우레탄 | A shoe sole having impact absorption structure of each part |
US8510970B2 (en) * | 2010-03-30 | 2013-08-20 | Howard Baum | Shoe sole with energy restoring device |
KR100920630B1 (en) | 2009-04-16 | 2009-10-08 | 강형철 | Sole for a shoe shifting shocking absorber body |
DE102009050783A1 (en) * | 2009-10-27 | 2011-05-12 | Stefan Lederer | Tread cushion for shoe soles, has elastic brace element formed from single piece, where two arms are formed with similar width, length, and thickness, and are distanced apart from each other |
EP2286685A1 (en) * | 2009-08-20 | 2011-02-23 | Masai Marketing & Trading AG | Shoe sole with air ventilation |
IT1398442B1 (en) * | 2010-02-22 | 2013-02-22 | Mattellone S R L | MULTI-LAYERED MATERIAL AND RELATIVE PROCEDURE OF REALIZATION. |
KR101047352B1 (en) * | 2010-12-07 | 2011-07-07 | (주)지원에프알에스 | Shoe sole with improved shock absorption and rebound resilience |
EP2556763A3 (en) * | 2011-08-11 | 2013-11-13 | Hermann Oberschneider | Construction, production and use of an innovative shoe sole system |
US20130192090A1 (en) * | 2012-01-27 | 2013-08-01 | Christopher J. B. Smith, IV | Article of footwear |
US9320312B2 (en) * | 2012-08-30 | 2016-04-26 | Nike, Inc. | Composite upper for shoe with selectively disposed bonding agent |
US20140068966A1 (en) * | 2012-09-11 | 2014-03-13 | Timothy Roy Chaffin | Suspension system for shoes comprised of carbon fiber springs and other components. |
KR101348703B1 (en) | 2013-06-28 | 2014-01-08 | (주)지원에프알에스 | Article of footwear |
US9451805B2 (en) * | 2013-07-26 | 2016-09-27 | Nike, Inc. | Article of footwear with support assembly having primary and secondary members |
ITVR20130293A1 (en) * | 2013-12-23 | 2015-06-24 | Selle Royal Spa | FOOTWEAR FOR CYCLING |
US10111492B2 (en) * | 2014-08-26 | 2018-10-30 | Nike, Inc. | Article of footwear with dynamic edge cavity midsole |
DE102015204060B4 (en) * | 2015-03-06 | 2023-07-27 | Adidas Ag | Stabilizing component for a shoe, in particular a mountaineering shoe |
-
2016
- 2016-08-01 RU RU2019103690A patent/RU2710629C1/en active
- 2016-08-01 CA CA3017812A patent/CA3017812A1/en active Pending
- 2016-08-01 WO PCT/IB2016/054610 patent/WO2017158408A1/en unknown
- 2016-08-01 US US16/085,045 patent/US20190104805A1/en not_active Abandoned
- 2016-08-01 JP JP2019500032A patent/JP6995826B2/en active Active
-
2021
- 2021-07-15 US US17/376,274 patent/US20210337924A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7434337B2 (en) * | 2002-09-09 | 2008-10-14 | The Zebra Company | Footwear item comprising built-in dynamic element |
US8051583B2 (en) * | 2007-09-06 | 2011-11-08 | Nike, Inc. | Article of footwear with improved stability and balance |
Non-Patent Citations (1)
Title |
---|
"Carbon Fiber." Bont Cycling. 01 Feb 2020. https://bontcycling.com/items/technology/carbon-fiber.html (Year: 2020) * |
Also Published As
Publication number | Publication date |
---|---|
JP2019509876A (en) | 2019-04-11 |
RU2710629C1 (en) | 2019-12-30 |
WO2017158408A1 (en) | 2017-09-21 |
US20190104805A1 (en) | 2019-04-11 |
CA3017812A1 (en) | 2017-09-21 |
JP6995826B2 (en) | 2022-01-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20210337924A1 (en) | Shoe sole | |
US20210361026A1 (en) | Walking device | |
US11607009B2 (en) | Article of footwear | |
JP7136923B2 (en) | Sole structure with multiple plates and intervening fluid-filled bladders, and method of making same | |
EP3473123B1 (en) | Sole assembly for an article of footwear | |
US9572399B2 (en) | Sole assembly for article of footwear with plural cushioning members | |
EP2856899B1 (en) | Article of footwear | |
JP2022115957A (en) | Sole structure for article of footwear | |
CA2713114C (en) | Cushioned shoe construction | |
US6205683B1 (en) | Shock diffusing, performance-oriented shoes | |
CN107580462B (en) | Multi-density midsole and deck system | |
US20180103727A1 (en) | Footwear construction with heel support assembly | |
JPH05168503A (en) | Shoes sole, especially for sports shoes | |
US12048353B2 (en) | Footwear with traction lugs bonded to a midsole | |
CZ13699A3 (en) | Shoe reinforcing element of sandwich type with rigid or partially rigid properties usable as a part of outsole or insole | |
EP3457882B1 (en) | Shoe sole | |
GB2150010A (en) | Shock-absorbing shoe construction | |
CN109414090B (en) | Sole of shoe | |
CN112568550B (en) | Sole element | |
US7614169B2 (en) | Method of manufacturing an article of footwear | |
JP7502558B2 (en) | Footwear assembly using bifit insole board and related methods | |
CN116584737A (en) | Stabilization element for shoe uppers |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ARKISTAR SRL, ITALY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DEL BIONDI, ALBERTO;RIZZI, ALESSIO;REEL/FRAME:056885/0902 Effective date: 20180913 |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STPP | Information on status: patent application and granting procedure in general |
Free format text: NON FINAL ACTION MAILED |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |