US20170013912A1 - Footwear Comprising an Elastic Intermediate Sole - Google Patents

Footwear Comprising an Elastic Intermediate Sole Download PDF

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Publication number
US20170013912A1
US20170013912A1 US15/123,855 US201515123855A US2017013912A1 US 20170013912 A1 US20170013912 A1 US 20170013912A1 US 201515123855 A US201515123855 A US 201515123855A US 2017013912 A1 US2017013912 A1 US 2017013912A1
Authority
US
United States
Prior art keywords
midsole
footgear
footwear
outsole
sole
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
Application number
US15/123,855
Other languages
English (en)
Inventor
Ursula Marschall
Axel Seuser
Lars Kerspe
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.)
Enquiring Eye GmbH
Kloeckner Desma Schuhmaschinen GmbH
Original Assignee
Enquiring Eye GmbH
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 Enquiring Eye GmbH filed Critical Enquiring Eye GmbH
Publication of US20170013912A1 publication Critical patent/US20170013912A1/en
Assigned to Klöckner Desma Schuhmaschinen GmbH, Enquiring Eye GmbH reassignment Klöckner Desma Schuhmaschinen GmbH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SEUSER, AXEL, MARSCHALL, URSULA
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B3/00—Footwear characterised by the shape or the use
    • A43B3/10—Low shoes, e.g. comprising only a front strap; Slippers
    • 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
    • A43B13/186—Differential cushioning region, e.g. cushioning located under the ball of the foot
    • 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
    • A43B13/02—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
    • A43B13/02—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
    • A43B13/127—Soles with several layers of different materials characterised by the midsole or middle layer the midsole being multilayer
    • 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
    • A43B13/189—Resilient soles filled with a non-compressible fluid, e.g. gel, water
    • 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
    • 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
    • A43B13/203—Pneumatic soles filled with a compressible fluid, e.g. air, gas provided with a pump or valve
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B3/00—Footwear characterised by the shape or the use
    • A43B3/10—Low shoes, e.g. comprising only a front strap; Slippers
    • A43B3/107—Low shoes, e.g. comprising only a front strap; Slippers characterised by the material
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B3/00—Footwear characterised by the shape or the use
    • A43B3/10—Low shoes, e.g. comprising only a front strap; Slippers
    • A43B3/108—Low shoes, e.g. comprising only a front strap; Slippers characterised by 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
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
    • A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
    • A43B7/1455—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form with special properties
    • A43B7/1464—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form with special properties with adjustable pads to allow custom fit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D35/00—Producing footwear
    • B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
    • B29D35/14—Multilayered parts
    • B29D35/142—Soles

Definitions

  • the invention relates to footwear comprising a sole of at least two-layer structure, with said sole consisting of a harder outer sole (outsole), an optional softer inner sole (insole) as well as an elastic intermediate sole (midsole).
  • the Nike company developed a system that was based on an air sole.
  • a gas-filled air cushion was integrated into the sole or in portions of the sole of a running shoe. Under load the gas is compressed so that the desired cushioning or damping effect is achieved.
  • Reebok was a sole that was provided with an air-filled honeycomb system of polyurethane.
  • the honeycombs were of different size and thus could provide support to certain parts of the foot as individually required.
  • a similar system was developed by the company of Puma.
  • the maximum heel load arising with a single-leg jump may amount to 3.5 times the body weight. Even during normal gait a load of up to 130% of the body weight acts on the heel.
  • footwear of the kind first mentioned above comprising a midsole made of an elastic material having an open-cell structure provided with a gas- and liquid-tight outer skin, wherein the cell structure is filled with at least one fluidic medium.
  • Footwear proposed by the present invention may be of optional type, for example may be a running shoe, a shoe intended for everyday use and may also include sandals as well as casual-wear sandals available on the market and known under the term flip-flops.
  • the inventive effect of damping the walking/running movement is reached with all the footwear designed in the inventive manner.
  • a corresponding damping effect may as well be reached with a sockliner.
  • Footwear proposed by the invention comprises a multi-layer and particularly three-layer sole structure.
  • said structure consists of an outsole, an insole as well as a midsole.
  • more than only a single midsole may be arranged for, but one of the midsoles must in any case be designed as called for by the present invention.
  • several insoles may be provided, for example of a kind that exclusively covers either the ball or the heel area. If thought expedient, the outer skin of the midsole may also serve as insole or the insole may be integrated into the midsole.
  • the midsole is designed so as to be elastic, and thus brings about the innovative damping effect.
  • the midsole consists of an elastic material having an open-cell structure.
  • the cell structure is filled with a fluidic medium and enclosed by a gas- and liquid-tight outer skin.
  • the open-cell structure of the elastic material allows for the medium to be displaced within the midsole and in this way intercepts part of the load, especially at the heel.
  • the elastic material has a spongelike structure as can be achieved, for example, with foamed plastic.
  • foamed plastic materials are foams known from plastics engineering such as, for example, polyethylene, polypropylene, polystyrene, PET, and polyurethane.
  • midsoles made of integrally foamed polyurethane, said midsoles thus having, by default, a closed outer skin and a cellular core.
  • Another and especially well suited material is polyester urethane rubber which offers excellent elastic properties.
  • the midsole prefferably be manufactured of a material produced by an integral skin foam process in such a manner that outer skin and cellular structure consist of a uniform material.
  • another possibility is to provide an open-cell foam body with a skin consisting of a different type of material.
  • materials may be used that have a weight per unit volume ranging between 40 and 100 kg/m 3 .
  • the pore size ranges between 0.5 and 5 mm, expediently between 0.5 and 3 mm.
  • the weight per unit volume of the foam as well as the pore size both influence the damping effect due to the fact that a small pore size increases the frictional resistance to be overcome by the fluidic medium passing through the foam structure. In this way, midsoles can be manufactured that by selecting the appropriate pore size are tailored to the individual needs of the relevant customers.
  • the fluidic media to be used may be of gas as well as liquid type. With both media types the damping effect acting on the midsoles employed in accordance with the invention is based on displacement. In this respect, the compression of gas only plays a minor role; liquids are not compressible. Basically, liquids are given preference, however. It is to be understood that blends of several fluids may also be used; liquid media and gas may also be employed jointly.
  • liquid media Especially qualified for use as liquid media are water, oil or alcohol, or mixtures/blends of several liquids, for example of water and polyols.
  • oil both vegetable and mineral oil types may be used but also synthetic oil such as silicone oil.
  • Suitable polyvalent alcohols are, for example, glycols, also oligomeric glycols, and also glycerin. If water is used, its viscosity can be increased by adding a thickening agent. This also applies to other types of liquid. The damping effect can also be controlled through the viscosity of the liquid to be displaced/shifted within the cellular structure.
  • the inventive midsole may as well be filled partly with a gaseous and partly with a liquid medium. Gaseous media in this case are primarily air, nitrogen, CO2 and also noble gases.
  • the midsole is provided with a valve located at the side.
  • said midsole is preferably arranged sandwiched between the outsole and the insole so that it is entirely enclosed.
  • the midsole is not only protected against damage but may also be easily manufactured since there is no need to attach it to the other soles by sewing.
  • the outsole, insole, and midsole may be attached to each other by bonding/glueing or by some other process.
  • the inventive footwear may also be provided with additional cushioning elements that may, for example, be arranged in recesses or hollows arranged in the insole, especially in the heel and/or ball area.
  • additional cushioning elements may, for example, be arranged in recesses or hollows arranged in the insole, especially in the heel and/or ball area.
  • Velcro® fastening elements may be arranged in said recesses by means of which said cushioning elements are held in place.
  • This type of touch fastening offers advantages over glueing in that the cushioning elements can be replaced as desired or necessary also with a view to lessening or improving the cushioning effect.
  • footwear proposed by the present invention may otherwise be of normal design, i.e. can be provided with any decorative elements customarily used in the footwear industry.
  • the sole of the inventive footwear may be of customary shape/design, that is, may be provided with a raised heel base or without raised base.
  • the sole may be elastic and flexible or designed so as to be harder/stiffer; it may also be of convex shape which enables the foot to roll over easier.
  • the footwear proposed by the invention ensures that the initial contact of the heel during walking causes the medium contained in the midsole to be displaced towards the front part and into the ball area. This will bring about the damping effect the moment the heel contacts the sole. During roll-over the medium is displaced and returned into the heel area of the midsole which results in the original conditions to be restored, with a damping/cushioning effect contributing to the relief of the forefoot upon toe contact. Said reflux of the displaced medium takes place more slowly than the lifting speed of the heel which precludes additional loads from being exerted on the ankle joint.
  • the fluidic medium first distributes from the heel area towards the ball area of the foot skeleton on which the load subsequently acts. This enables the load to be absorbed over the entire foot, from the heel up to the ball and in the toe area. Even the great toe and the metatarsophalangeal joint of the great toe will absorb part of the load when lifting off. Therefore, the joint apparatus of the runner will thus have to absorb less and not additional loads.
  • FIG. 1 is a top view of a sandal proposed by the invention
  • FIG. 2 shows the sandal illustrated in FIG. 1 viewed from the toe side
  • FIG. 3 is a side view of the sandal illustrated in FIG. 1 seen from the inside of the foot.
  • valve element 7 enables the fluidic medium in the midsole to be filled in initially, and, as the case may be, replenish or replace it afterwards.
  • valve 7 is of self-closing design but may also be closed by means of a plug, or may be closed off by welding. In the latter case, the sole cannot be refilled.
  • the sandal itself is provided with a strap construct 6 to secure the sandal to the foot of the wearer, said construct being anchored in the sole construct 2 / 3 via two rear fasteners 4 and one front-side fastener 5 .
  • Fasteners 4 and 5 extend through the midsole 2 and project into outsole 3 , and they are anchored in outsole 3 by dish-shaped enlargements 8 (see FIGS. 2 / 3 . It is easily seen that fasteners 4 and 5 extend through ducts arranged in and passing through midsole 2 which enables a sheathing to be achieved that is impervious to the fluidic medium present in midsole 2 .
  • Fastener 5 with strip 9 is arranged in the front region of the sandal in such a manner that wearers of the sandal can hold strip 9 between their great and second toes.
  • Strip 9 is bonded or sewed to the strap construct 6 and extends together with fastener 5 through the sole construct 2 / 3 terminating in the dish-shaped enlargement 8 of fastener 5 in the outsole 3 .
  • dish-shaped enlargements 8 of fasteners 4 and 5 are countersunk into the sole at the underside (outsole 3 ) and upper side (midsole 2 or, as the case may be, an insole) so that they do not project.
  • FIG. 2 shows the sandal as per FIG. 1 viewed from the toe side.
  • Midsole 2 and outsole 3 which is arranged underneath the midsole can be seen with the outsole embracing the midsole 2 laterally. In this manner, the outsole 3 extending around the sides provides protection of the midsole 2 .
  • Valve 7 arranged in midsole 2 has also be shown.
  • Strap construct 6 is anchored in outsole 3 via fasteners 4 arranged in the heel area, with dish-shaped enlargements 8 being located in the outsole area, said enlargements being sunk into outsole 3 .
  • Fasteners 4 and 5 are secured in the outsole 3 via these dish-shaped enlargements 8 .
  • the dish-shaped elements 8 may be attached to the outsole by bonding or welding.
  • fasteners 4 and 5 with the latter merging into strip 9 , extend in ducts arranged in the midsole, wherein the duct sheathings provide protection against the filling of the midsole.
  • Strip 9 is attached to the strap construct by bonding or sewing.
  • FIG. 3 is a side view of the sandal shown in FIGS. 1 / 2 seen from the inside of the foot.
  • the illustration shows strap construct 6 with strip 9 , the midsole with valve 7 as well as the fasteners 4 and 5 with the dish-shaped retaining elements 8 .
  • the outsole 3 has been raised to laterally embrace the midsole, with the outsole thus providing protection of midsole 2 not only in the front but also in the rear area.
  • the sandal shown is only an embodiment of the invention.
  • the footwear proposed by the invention may as well be designed as a conventional shoe or as a slipper with open or closed heel portion.
  • the outsole is stiffer than the midsole.
  • the midsole 2 is appropriately designed so that during roll-over of the foot the fluidic medium is caused to be displaced within the midsole as a result of the running/walking movement.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Mechanical Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US15/123,855 2014-03-07 2015-03-06 Footwear Comprising an Elastic Intermediate Sole Abandoned US20170013912A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102014003017.2 2014-03-07
DE102014003017.2A DE102014003017A1 (de) 2014-03-07 2014-03-07 Fußbekleidung mit elastischer Zwischensohle
PCT/EP2015/054763 WO2015132400A1 (de) 2014-03-07 2015-03-06 Fussbekleidung mit elastischer zwischensohle

Publications (1)

Publication Number Publication Date
US20170013912A1 true US20170013912A1 (en) 2017-01-19

Family

ID=52781012

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US15/123,855 Abandoned US20170013912A1 (en) 2014-03-07 2015-03-06 Footwear Comprising an Elastic Intermediate Sole

Country Status (9)

Country Link
US (1) US20170013912A1 (es)
EP (1) EP3113641B1 (es)
JP (1) JP6860347B2 (es)
CN (1) CN106163314A (es)
DE (1) DE102014003017A1 (es)
ES (1) ES2924194T3 (es)
PT (1) PT3113641T (es)
RU (1) RU2694280C2 (es)
WO (1) WO2015132400A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11447615B2 (en) 2019-09-12 2022-09-20 Nike, Inc. Foam compositions and uses thereof
WO2021050845A1 (en) * 2019-09-12 2021-03-18 Nike, Inc. A cushioning element for an article of footwear

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US4858340A (en) * 1988-02-16 1989-08-22 Prince Manufacturing, Inc. Shoe with form fitting sole
US4874640A (en) * 1987-09-21 1989-10-17 Donzis Byron A Impact absorbing composites and their production
US5097607A (en) * 1990-05-07 1992-03-24 Wolverine World Wide, Inc. Fluid forefoot footware
US5194325A (en) * 1992-02-25 1993-03-16 Renosol Corporation Molded polyurethane foam system utilizing HFC blowing agents
US5506275A (en) * 1995-05-15 1996-04-09 Basf Corporation 1,1,1,2-tetrafluoroethane as a blowing agent in integral skin polyurethane shoe soles
US6127010A (en) * 1995-08-18 2000-10-03 Robert C. Bogert Shock absorbing cushion
US6571490B2 (en) * 2000-03-16 2003-06-03 Nike, Inc. Bladder with multi-stage regionalized cushioning
US20070033834A1 (en) * 2005-08-12 2007-02-15 Cheskin Melvyn P Shoe insole
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US20100199524A1 (en) * 2007-07-12 2010-08-12 Gregor Grun Shoe for medical applications
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Publication number Priority date Publication date Assignee Title
US4287307A (en) * 1980-03-05 1981-09-01 Plastics Technology Associates, Inc. Integral skin microcellular polyester base polyurethane elastomers
US4524102A (en) * 1984-02-15 1985-06-18 Fritz Hostettler Microcellular polyurethane foams having integral skin
US4874640A (en) * 1987-09-21 1989-10-17 Donzis Byron A Impact absorbing composites and their production
US4858340A (en) * 1988-02-16 1989-08-22 Prince Manufacturing, Inc. Shoe with form fitting sole
US5097607A (en) * 1990-05-07 1992-03-24 Wolverine World Wide, Inc. Fluid forefoot footware
US5194325A (en) * 1992-02-25 1993-03-16 Renosol Corporation Molded polyurethane foam system utilizing HFC blowing agents
US5506275A (en) * 1995-05-15 1996-04-09 Basf Corporation 1,1,1,2-tetrafluoroethane as a blowing agent in integral skin polyurethane shoe soles
US6127010A (en) * 1995-08-18 2000-10-03 Robert C. Bogert Shock absorbing cushion
US6571490B2 (en) * 2000-03-16 2003-06-03 Nike, Inc. Bladder with multi-stage regionalized cushioning
US20070033834A1 (en) * 2005-08-12 2007-02-15 Cheskin Melvyn P Shoe insole
US20110023333A1 (en) * 2006-09-29 2011-02-03 Markus Schutte Composite Materials Composed Of An Elastic Polyurethane Molding And Rubber With Improved Adhesion
US20100199524A1 (en) * 2007-07-12 2010-08-12 Gregor Grun Shoe for medical applications
US20100190880A1 (en) * 2007-10-02 2010-07-29 Basf Se. Low-density polyurethane foams and use thereof in shoe soles
US20090293305A1 (en) * 2008-05-30 2009-12-03 St Ip, Llc Full length airbag
US20120153523A1 (en) * 2010-12-16 2012-06-21 Basf Se Process for producing low-density polyurethane moldings
US20130255106A1 (en) * 2010-12-22 2013-10-03 Seong Guk Cho Assembled footwear
US20130192086A1 (en) * 2012-01-27 2013-08-01 Fuerst Group Inc. Injected Footwear
US20150322196A1 (en) * 2013-01-25 2015-11-12 Bayer Materialscience Ag A polyester polyurethane material with long term hydrolysis resistance
US20150075033A1 (en) * 2013-09-18 2015-03-19 Nike, Inc. Auxetic Structures and Footwear with Soles Having Auxetic Structures

Also Published As

Publication number Publication date
RU2016139250A3 (es) 2018-08-30
RU2016139250A (ru) 2018-04-13
DE102014003017A1 (de) 2015-09-10
PT3113641T (pt) 2022-08-12
RU2694280C2 (ru) 2019-07-11
JP6860347B2 (ja) 2021-04-14
WO2015132400A1 (de) 2015-09-11
CN106163314A (zh) 2016-11-23
EP3113641A1 (de) 2017-01-11
ES2924194T3 (es) 2022-10-05
JP2017506990A (ja) 2017-03-16
EP3113641B1 (de) 2022-05-04

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