EP0792593A2 - Footwear having a shaped outsole for providing internal ventilation of the shoe - Google Patents

Footwear having a shaped outsole for providing internal ventilation of the shoe Download PDF

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Publication number
EP0792593A2
EP0792593A2 EP97200541A EP97200541A EP0792593A2 EP 0792593 A2 EP0792593 A2 EP 0792593A2 EP 97200541 A EP97200541 A EP 97200541A EP 97200541 A EP97200541 A EP 97200541A EP 0792593 A2 EP0792593 A2 EP 0792593A2
Authority
EP
European Patent Office
Prior art keywords
footwear
outsole
interior
midsole
cells
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Withdrawn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
EP97200541A
Other languages
German (de)
French (fr)
Other versions
EP0792593A3 (en
Inventor
Plinio Garbujo
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.)
WL Gore and Associates SRL
Original Assignee
WL Gore and Associates 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 WL Gore and Associates SRL filed Critical WL Gore and Associates SRL
Publication of EP0792593A2 publication Critical patent/EP0792593A2/en
Publication of EP0792593A3 publication Critical patent/EP0792593A3/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • A43B7/081—Footwear with health or hygienic arrangements ventilated with air-holes, with or without closures the air being forced from outside
    • 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
    • A43B7/082—Footwear with health or hygienic arrangements ventilated with air-holes, with or without closures the air being expelled to the outside

Definitions

  • the present invention relates to footwear having a plastic outsole, and an upper.
  • footwear has come into a wide use in which the outsole is made of a pressed or injection molded plastic, e. g., footwear with an outsole of foamed polyurethane and the like, welded to the upper that is also often made of a synthetic material.
  • footwear of the above type internally provided with a liner of a liquid water impervious and water vapor permeable material, e.g., expanded polytetrafluoroethylene.
  • a liner of a liquid water impervious and water vapor permeable material e.g., expanded polytetrafluoroethylene.
  • footwear having an upper, outsole and midsole has the inner part of the outsole having a cellular structure, e.g., in a shaped structure of a honeycomb type, and has the midsole perforated for allowing air to pass from the outsole to the interior of the footwear.
  • the outsole has in its inner part a cellular structure, e.g., a honeycomb structure, and the midsole has a number of holes for establishing communication between the outsole and the interior of the footwear.
  • a cellular structure e.g., a honeycomb structure
  • the midsole has a number of holes for establishing communication between the outsole and the interior of the footwear.
  • a piece of footwear comprises an upper 1 having its lower part attached to an outsole generally shown at 2 which is made of a synthetic material, e. g., of an injection molded material such as foamed polyurethane or the like.
  • the interior of the footwear is lined with a layer 3 an impervious material that is capable of allowing water vapor transpiration, i.e., it is breathable, which can be in particular, a layer of expanded porous PTFE.
  • a midsole 4 Located between the outsole 2 and the inner lining 3 is a midsole 4 that has an edge which is attached, on the one side, to the outsole or to the upper and, on the other side, to the inner liner by means of adhesive layers shown at 5 and 6, respectively.
  • the inner part of the outsole is cellular, in other words, it is shaped so as to have a plurality of blind holes or cells 7 open into the interior of the footwear.
  • the outsole can have internally the honeycomb structure.
  • Midsole 4 which can be made of felt or of another appropriate material, has a plurality of through holes 8 for establishing communication between the cells of the outsole structure and the interior of the footwear.
  • Holes 8 preferably have an upper edge 9 (see Fig. 2) that is rounded to prevent the inner lining 3 from being damaged during movement of the shoe.
  • one or two layers 10, e. g., of a non-woven fabric can be provided for protecting midsole 4.
  • the shape of the cells is not limited to the hexagonal configuration of the honeycomb structure, and it can be, e.g., round or different without going beyond the scope of protection of this invention.

Abstract

According to the invention, footwear having an upper, outsole and midsole, has the inner part of the outsole having a cellular structure, e.g., in a shaped structure of a honeycomb type, and has the midsole perforated for allowing air to pass from the outsole to the interior of the footwear. With this construction, deformations of the cells of the outsole during walking cause a pumping effect that induces air circulation between the outsole and the interior of the footwear. This contributes to a recirculation and to a self-ventilation effect being induced in the area of the foot where such functions are needed.

Description

    FIELD OF THE INVENTION
  • The present invention relates to footwear having a plastic outsole, and an upper.
    • BACKGROUND OF THE INVENTION
  • In recent years, footwear has come into a wide use in which the outsole is made of a pressed or injection molded plastic, e. g., footwear with an outsole of foamed polyurethane and the like, welded to the upper that is also often made of a synthetic material.
  • Also known in the art is footwear of the above type internally provided with a liner of a liquid water impervious and water vapor permeable material, e.g., expanded polytetrafluoroethylene.
  • The synthetic materials used for making the outsole and other parts of the footwear offer substantial advantages of being economical, light-weight and durable. For these reasons the employment of such materials has become commonplace.
  • However, in spite of such advantages described above, most synthetic materials have the disadvantage of being completely impervious thus inhibiting an appropriate transpiration of water vapor from the feet with adverse consequences for the user.
  • This imperviousness compromises the advantages derived from the use of a water vapor permeable lining.
  • It is an object of the present invention to provide footwear in which the above disadvantages are eliminated.
    • SUMMARY OF THE INVENTION
  • According to the invention, footwear having an upper, outsole and midsole, has the inner part of the outsole having a cellular structure, e.g., in a shaped structure of a honeycomb type, and has the midsole perforated for allowing air to pass from the outsole to the interior of the footwear.
  • With this construction, deformations of the cells of the outsole during walking cause a pumping effect that induces air circulation between the outsole and the interior of the footwear. This contributes to a recirculation and to a self-ventilation effect being induced in the area of the foot where such functions are needed.
    • BRIEF DESCRIPTION OF THE DRAWINGS
    • Figure 1 schematically shows a piece of footwear according to the invention in a vertical section;
    • Figure 2 shows a detail of Figure1.
    DETAILED DESCRIPTION OF THE INVENTION
  • In this invention the outsole has in its inner part a cellular structure, e.g., a honeycomb structure, and the midsole has a number of holes for establishing communication between the outsole and the interior of the footwear. With this construction, deformations of the outsole during walking result in a pumping effect taking place which creates circulation of air into the interior of the shoe. A self-ventilation is thus provided to enhance comfort for the user and to make the footwear especially useful and comfortable.
  • Referring to the drawings, a piece of footwear according to the invention comprises an upper 1 having its lower part attached to an outsole generally shown at 2 which is made of a synthetic material, e. g., of an injection molded material such as foamed polyurethane or the like.
  • The interior of the footwear is lined with a layer 3 an impervious material that is capable of allowing water vapor transpiration, i.e., it is breathable, which can be in particular, a layer of expanded porous PTFE.
  • Located between the outsole 2 and the inner lining 3 is a midsole 4 that has an edge which is attached, on the one side, to the outsole or to the upper and, on the other side, to the inner liner by means of adhesive layers shown at 5 and 6, respectively.
  • The inner part of the outsole is cellular, in other words, it is shaped so as to have a plurality of blind holes or cells 7 open into the interior of the footwear. For example, the outsole can have internally the honeycomb structure. Midsole 4, which can be made of felt or of another appropriate material, has a plurality of through holes 8 for establishing communication between the cells of the outsole structure and the interior of the footwear. Holes 8 preferably have an upper edge 9 (see Fig. 2) that is rounded to prevent the inner lining 3 from being damaged during movement of the shoe.
  • And finally, one or two layers 10, e. g., of a non-woven fabric can be provided for protecting midsole 4.
  • In use, deformations imposed upon the outsole during walking cause cells 7 to collapse. Thus a part of the air present in the cells is expelled in the upward direction. A pumping effect is created in the interior of the footwear to induce air circulation. The air passes from the cells of the outsole through holes 8 of the midsole and tends to escape to the outside along the walls, and vice versa. A self-ventilation is thus practically implemented which contributes to recirculation of air into the interior of the footwear, in particular, under the plantar zone of the foot. This has a favorable effect for the user and almost completely eliminates disadvantages associated with the footwear where breathability is impaired.
  • While the inner part of the outsole can remain cellular in structure, the shape of the cells is not limited to the hexagonal configuration of the honeycomb structure, and it can be, e.g., round or different without going beyond the scope of protection of this invention.
  • It will be further apparent that dimensions and materials used may vary depending on specific application.

Claims (4)

  1. Footwear of the type having an upper, an outsole made of a plastic material adhered to said upper, and a midsole positioned in the interior in contact with the outsole, characterized by the fact that said outsole has its internal part comprised of a cellular structure having cells open into the interior of the footwear, said midsole having a plurality of through holes for establishing communication between said cells of the outsole and the interior of the footwear.
  2. The footwear of claim 1, characterized by the fact that it is internally provided with a lining of a liquid water impervious, water vapor permeable material.
  3. The footwear of claim 2, wherein said impervious and transpirable material is porous PTFE.
  4. Footwear according to Claims 1, 2 or 3, characterized by the fact that the inner part of the outsole has a honeycomb structure.
EP97200541A 1996-03-01 1997-02-25 Footwear having a shaped outsole for providing internal ventilation of the shoe Withdrawn EP0792593A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVI960018 IT251187Y1 (en) 1996-03-01 1996-03-01 FOOTWEAR WITH A SHAPED SOLE SUITABLE FOR DETERMINING A VENTILATION VENTILATION EFFECT INSIDE THE SHOE.
ITVI960018U 1996-03-01

Publications (2)

Publication Number Publication Date
EP0792593A2 true EP0792593A2 (en) 1997-09-03
EP0792593A3 EP0792593A3 (en) 1998-06-03

Family

ID=11425951

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97200541A Withdrawn EP0792593A3 (en) 1996-03-01 1997-02-25 Footwear having a shaped outsole for providing internal ventilation of the shoe

Country Status (3)

Country Link
EP (1) EP0792593A3 (en)
JP (1) JPH09322803A (en)
IT (1) IT251187Y1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2339670A (en) * 1998-07-22 2000-02-09 David Holburn Internal footwear cooling and moisture expelling device
DE10129210A1 (en) * 2001-06-22 2003-06-12 Heinz Koszlat Shoe ventilation and propulsion system has sole that is entirely perforated to foot; each individual perforation hole is in form of membrane or similar valve in micro range
WO2004089142A1 (en) * 2003-04-07 2004-10-21 Songjo Lim Shoe with ventilating opening
US10723048B2 (en) 2017-04-05 2020-07-28 Adidas Ag Method for a post process treatment for manufacturing at least a part of a molded sporting good
US10730259B2 (en) 2016-12-01 2020-08-04 Adidas Ag Method for the manufacture of a plastic component, plastic component, and shoe
US10974476B2 (en) 2016-05-24 2021-04-13 Adidas Ag Sole mold for manufacturing a sole
US11135797B2 (en) 2013-02-13 2021-10-05 Adidas Ag Methods for manufacturing cushioning elements for sports apparel
US11407191B2 (en) 2016-05-24 2022-08-09 Adidas Ag Method for the manufacture of a shoe sole, shoe sole, and shoe with pre-manufactured TPU article
US11470913B2 (en) 2015-02-05 2022-10-18 Adidas Ag Plastic component and shoe
US11938697B2 (en) 2016-05-24 2024-03-26 Adidas Ag Method and apparatus for automatically manufacturing shoe soles

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB395221A (en) * 1932-10-31 1933-07-13 Mueller Otto Improvements in or relating to ventilated insoles for boots and shoes
US2558973A (en) * 1948-02-06 1951-07-03 Meaker John Wesley Ventilated shoe
FR1160497A (en) * 1956-11-08 1958-07-16 Ventilated soles and shoes provided with such soles
US3012342A (en) * 1960-07-06 1961-12-12 Ramirez Eliseo Loza Sole assembly for footwear
DE2226216A1 (en) * 1972-05-30 1973-12-13 Past Anton MOLDED SOLE MADE OF RUBBER, PLASTIC OD. DGL. FOR FOOTWEAR
EP0080710A2 (en) * 1981-11-27 1983-06-08 W.L. Gore & Associates GmbH Water vapour (perspiration) permeable footwear
US4468869A (en) * 1982-10-26 1984-09-04 Sadao Fukuoka Footwear
EP0275644A2 (en) * 1987-01-20 1988-07-27 Japan Gore-Tex, Inc. A water-vapour-permeable waterproof shoe
GB2247391A (en) * 1990-08-30 1992-03-04 Triple Three Leisure Limited Ventilated footwear

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB395221A (en) * 1932-10-31 1933-07-13 Mueller Otto Improvements in or relating to ventilated insoles for boots and shoes
US2558973A (en) * 1948-02-06 1951-07-03 Meaker John Wesley Ventilated shoe
FR1160497A (en) * 1956-11-08 1958-07-16 Ventilated soles and shoes provided with such soles
US3012342A (en) * 1960-07-06 1961-12-12 Ramirez Eliseo Loza Sole assembly for footwear
DE2226216A1 (en) * 1972-05-30 1973-12-13 Past Anton MOLDED SOLE MADE OF RUBBER, PLASTIC OD. DGL. FOR FOOTWEAR
EP0080710A2 (en) * 1981-11-27 1983-06-08 W.L. Gore & Associates GmbH Water vapour (perspiration) permeable footwear
US4468869A (en) * 1982-10-26 1984-09-04 Sadao Fukuoka Footwear
EP0275644A2 (en) * 1987-01-20 1988-07-27 Japan Gore-Tex, Inc. A water-vapour-permeable waterproof shoe
GB2247391A (en) * 1990-08-30 1992-03-04 Triple Three Leisure Limited Ventilated footwear

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2339670A (en) * 1998-07-22 2000-02-09 David Holburn Internal footwear cooling and moisture expelling device
DE10129210A1 (en) * 2001-06-22 2003-06-12 Heinz Koszlat Shoe ventilation and propulsion system has sole that is entirely perforated to foot; each individual perforation hole is in form of membrane or similar valve in micro range
WO2004089142A1 (en) * 2003-04-07 2004-10-21 Songjo Lim Shoe with ventilating opening
EP1615515A1 (en) * 2003-04-07 2006-01-18 Lim, SongJo Shoe with ventilating opening
EP1615515A4 (en) * 2003-04-07 2006-07-12 Songjo Lim Shoe with ventilating opening
US7328525B2 (en) 2003-04-07 2008-02-12 Lim Songjo Shoe with ventilating opening
US11135797B2 (en) 2013-02-13 2021-10-05 Adidas Ag Methods for manufacturing cushioning elements for sports apparel
US11945184B2 (en) 2013-02-13 2024-04-02 Adidas Ag Methods for manufacturing cushioning elements for sports apparel
US11470913B2 (en) 2015-02-05 2022-10-18 Adidas Ag Plastic component and shoe
US10974476B2 (en) 2016-05-24 2021-04-13 Adidas Ag Sole mold for manufacturing a sole
US11407191B2 (en) 2016-05-24 2022-08-09 Adidas Ag Method for the manufacture of a shoe sole, shoe sole, and shoe with pre-manufactured TPU article
US11938697B2 (en) 2016-05-24 2024-03-26 Adidas Ag Method and apparatus for automatically manufacturing shoe soles
US10730259B2 (en) 2016-12-01 2020-08-04 Adidas Ag Method for the manufacture of a plastic component, plastic component, and shoe
US11504928B2 (en) 2016-12-01 2022-11-22 Adidas Ag Method for the manufacture of a plastic component, plastic component, midsole and shoe
US10723048B2 (en) 2017-04-05 2020-07-28 Adidas Ag Method for a post process treatment for manufacturing at least a part of a molded sporting good

Also Published As

Publication number Publication date
ITVI960018V0 (en) 1996-03-01
IT251187Y1 (en) 2003-11-04
EP0792593A3 (en) 1998-06-03
JPH09322803A (en) 1997-12-16
ITVI960018U1 (en) 1997-09-01

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