EP3949786A1 - Sohle für schuhe und entsprechender schuh damit - Google Patents

Sohle für schuhe und entsprechender schuh damit Download PDF

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Publication number
EP3949786A1
EP3949786A1 EP21187527.3A EP21187527A EP3949786A1 EP 3949786 A1 EP3949786 A1 EP 3949786A1 EP 21187527 A EP21187527 A EP 21187527A EP 3949786 A1 EP3949786 A1 EP 3949786A1
Authority
EP
European Patent Office
Prior art keywords
sole
shoes
uppers
grooves
face
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.)
Withdrawn
Application number
EP21187527.3A
Other languages
English (en)
French (fr)
Inventor
Sayed Muslim Mirza Din Mahamed
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Da Ma e Co SRL
Original Assignee
Da Ma e Co SRL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Da Ma e Co SRL filed Critical Da Ma e Co SRL
Publication of EP3949786A1 publication Critical patent/EP3949786A1/de
Withdrawn legal-status Critical Current

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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
    • A43B13/04—Plastics, rubber or vulcanised fibre
    • 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
    • A43B13/143—Soles; Sole-and-heel integral units characterised by the constructive form provided with wedged, concave or convex end portions, e.g. for improving roll-off of the foot

Definitions

  • the present invention relates to a sole for shoes and any corresponding shoe that comprises it.
  • Shoes are constituted by two main elements, the sole and the upper, between which intermediate layers can be interposed (such as mid-soles, insoles, protective sheets and the like) and on which further functional components (treads, heel protectors etc.) and aesthetic components (buckles, decorations and the like) can be attached.
  • Soles have been made of a huge number of different materials, of natural origin, artificial origin, and combinations thereof.
  • EVA ethylene vinyl acetate
  • expanded EVA is resistant to fungi and bacteria, it is non-allergenic and non-toxic, and so it is particularly suitable for all applications in which there is direct contact with the body of the user. It is normally used to make parts of soles, in combination with other materials or with different versions of the same material.
  • EVA is used to make the shock-absorbing part: the shock-absorbing part can be made with a "soft" EVA or a "hard” EVA or with a combination thereof.
  • the comfort provided by a sole that comprises layers made of EVA is particularly appreciated by users, although it is generally applied only to some categories of shoes which constitute only a small percentage of the entire sector.
  • Such structure can easily be provided in soles made of rubber, in that the molding technique is simplified by the linear and predictable behavior of the material during injection and extraction from the mold.
  • the aim of the present invention is to solve the above mentioned drawbacks, by providing a sole for shoes that is made of EVA and is adapted to be applied in any type of shoe.
  • an object of the invention is to provide a sole for shoes that has a predefined progression of the elastic response and of the pliability of its parts.
  • Another object of the invention is to provide a shoe that offers a high level of comfort.
  • Another object of the invention is to provide a shoe for specific applications, with the pliability of the sole calibrated.
  • Another object of the present invention is to provide a sole for shoes and a shoe that comprises such sole which are of low cost, easily and practically implemented, and safe in use.
  • a sole for shoes characterized in that it is constituted by a single element made with a compound based on expandable and cross-linkable polyolefins, commonly known as expanded ethylene vinyl acetate (expanded EVA), which comprises transverse grooves distributed on two mutually opposite faces, a first face being designed to abut, directly or indirectly, against the foot of the user, a second face being designed to abut, directly or indirectly, against the ground during use.
  • expanded EVA expanded ethylene vinyl acetate
  • a shoe characterized in that it comprises an upper and a sole that is constituted by a single element made of expanded ethylene vinyl acetate (expanded EVA), which comprises transverse grooves distributed on two mutually opposite faces, a first face being designed to abut, directly or indirectly, against the foot of the user, a second face being designed to abut, directly or indirectly, against the ground during use.
  • expanded EVA expanded ethylene vinyl acetate
  • the reference numeral 1 generally designates a sole for shoes and the reference numeral 10 generally designates a shoe provided with the sole 1.
  • the sole 1 according to the invention is constituted by a single element made with a compound based on expandable and cross-linkable polyolefins, commonly known as expanded ethylene vinyl acetate (expanded EVA), which comprises transverse grooves 2 distributed on two mutually opposite faces.
  • expanded EVA expanded ethylene vinyl acetate
  • a first face of the sole 1 affected by the grooves 2 will be the face designed to abut, directly or indirectly, against the foot of the user, a second face while a second face will be the face designed to abut, directly or indirectly, against the ground during use.
  • the grooves 2 can advantageously have a shape preferably chosen from prismatic, with a constant cross-section the shape of which is fanciful, with a constant cross-section the shape of which is geometric, semi-cylindrical, semi-conical, cylindrical, conical, or irregular, and combinations thereof.
  • semi-cylindrical and cylindrical are also used to mean irregular cylinders, such as cylinders that are elliptical, hyperbolic, parabolic and the like.
  • each groove 2 seen from the front will have a track that can correspond to any geometric figure, but also to any fanciful shape (such as heart shapes, or any other shape).
  • each groove need not necessarily be the same between the outside and the inside of the sole for each groove; the grooves need to be designed with regard to the elastic response and the comfort that the sole needs to have at the corresponding zones where that groove is located.
  • prismatic grooves 2 with a triangular base can advantageously be a plurality: in this case the grooves 2 will positively be distributed with an alternating progression on the first and on the second face, so as to define a side profile of the sole 1 that is substantially zigzagged.
  • the grooves 2 even in an embodiment that comprises prismatic grooves 2 with a polygonal base, it will be advantageously possible for the grooves to be a plurality.
  • the grooves 2 will be distributed with an alternating progression on the first and on the second face, so as to define a side profile of the sole 1 of a type chosen from that of a square wave, a sawtooth wave and the like.
  • the grooves 2 are substantially semi-cylindrical, semi-conical and the like, it is possible for the grooves to be a plurality and that they are distributed with an alternating progression on the first and on the second face, so as to define a side profile of the sole of the type of a sinusoidal wave and the like.
  • the distribution (concentration in some parts and spacing-out in other) along the longitudinal extension of the sole 1 of the grooves 2, as with their dimensions, can be used for a perfect calibration of the pliability and of the elastic response of the sole 1, so as to adapt the sole 1 to specific uses or in order to maximize the comfort of the shoe 10 that incorporates it.
  • the shoe 10 according to the invention comprises an upper 11 and the sole 1 which is constituted by a single element made of expanded ethylene vinyl acetate (expanded EVA).
  • the sole 1 of the shoe 10 will conveniently comprise transverse grooves 2 distributed on two mutually opposite faces, a first face being designed to abut, directly or indirectly, against the foot of the user, a second face being designed to abut, directly or indirectly, against the ground during use.
  • the upper 11 that can be connected to the sole 1 can advantageously be of a type chosen from uppers for classic shoes, uppers for sneakers, uppers for work shoes, uppers for safety shoes, uppers for hiking shoes, uppers for combat boots, uppers for boots, uppers for snow boots, uppers for gym shoes and the like.
  • the innovation of the present invention lies in the possibility of using the same sole 1 for shoes 10 of different type, thanks to the great versatility of the sole 1 which ensures the maximum of comfort by virtue of its particular shape structure (and the specific distribution of the grooves 2), without needing to be joined to further elements (traditional soles comprise multiple glued or heat-sealed layers, each one of which is designed to ensure the necessary comfort and/or the appropriate resistance to abrasion and/or the adapted elastic response).
  • the shoe 10 achieves such result solely by adopting a sole 1 that ensures comfort (localized softness where it is needed according to ergonomic criteria), resistance to abrasion (in order to prevent the sole 1 from being rapidly worn out during use) and good elastic response (necessary in sports shoes and in some types of work shoes).
  • At least one sheet 12 of material can be interposed which is preferably chosen from polymers, cork, hide, leather, eco-friendly hide, eco-friendly leather, textile fibers, natural fibers, wood and derivatives thereof, composite materials and combination thereof.
  • the possibility is not ruled out that such sheet can be metallic, for example in safety shoes.
  • the sole 1 can conveniently be joined to the respective upper 11 with a technique chosen from adhesive bonding, heat-sealing, sewing, interlocking, interference fit and combinations thereof.
  • Joins by interference fit can also entail the adoption of optional elements, such as nails, rivets and the like.
  • the present invention solves the above mentioned problems, by providing a sole 1 for shoes 10 that is made of EVA and is adapted to be applied in any type of shoe 10.
  • the sole 1 for shoes 10 according to the invention has a predefined progression of the elastic response and of the pliability of its parts (this is obtained by virtue of the specific distribution, concentration and dimensions of the grooves 2 present).
  • the shoe 10 according to the invention offers a high level of comfort.
  • the shoe 10 according to the invention is suitable for specific applications, with the pliability of the sole 1 calibrated.
  • sole 1 for shoes 10 and any corresponding shoe 10 that comprises such sole 1 are easily and practically implemented and of low cost: such characteristics make the sole 1 and the shoe 10 according to the invention safe in use.
  • the materials employed, as well as the dimensions, may be any according to requirements and to the state of the art.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP21187527.3A 2020-08-06 2021-07-23 Sohle für schuhe und entsprechender schuh damit Withdrawn EP3949786A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202000004684 2020-08-06

Publications (1)

Publication Number Publication Date
EP3949786A1 true EP3949786A1 (de) 2022-02-09

Family

ID=77050839

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21187527.3A Withdrawn EP3949786A1 (de) 2020-08-06 2021-07-23 Sohle für schuhe und entsprechender schuh damit

Country Status (1)

Country Link
EP (1) EP3949786A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418483A (en) * 1981-03-31 1983-12-06 Rinzai Co., Ltd. Method of manufacturing shoe sole material and shoes products made by the same
US20030033730A1 (en) * 2001-08-15 2003-02-20 Burke Robert G. Footwear to enhance natural gait
US20090211114A1 (en) * 2005-11-02 2009-08-27 Puma Aktiengesellschaft Rudolf Dassler Sport Shoe, in particular sports shoe
US20150052782A1 (en) * 2010-12-29 2015-02-26 Reebok International Limited Sole And Article Of Footwear

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4418483A (en) * 1981-03-31 1983-12-06 Rinzai Co., Ltd. Method of manufacturing shoe sole material and shoes products made by the same
US20030033730A1 (en) * 2001-08-15 2003-02-20 Burke Robert G. Footwear to enhance natural gait
US20090211114A1 (en) * 2005-11-02 2009-08-27 Puma Aktiengesellschaft Rudolf Dassler Sport Shoe, in particular sports shoe
US20150052782A1 (en) * 2010-12-29 2015-02-26 Reebok International Limited Sole And Article Of Footwear

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