US20080086908A1 - Article of Footwear with Deforming Insert - Google Patents

Article of Footwear with Deforming Insert Download PDF

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Publication number
US20080086908A1
US20080086908A1 US11/549,755 US54975506A US2008086908A1 US 20080086908 A1 US20080086908 A1 US 20080086908A1 US 54975506 A US54975506 A US 54975506A US 2008086908 A1 US2008086908 A1 US 2008086908A1
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United States
Prior art keywords
article
outsole
outer member
insert
footwear according
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
US11/549,755
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English (en)
Inventor
Thomas Berend
Christopher S. Cook
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.)
Nike Inc
Original Assignee
Nike Inc
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 Nike Inc filed Critical Nike Inc
Priority to US11/549,755 priority Critical patent/US20080086908A1/en
Assigned to NIKE, INC. reassignment NIKE, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BEREND, THOMAS, COOK, CHRISTOPHER S.
Priority to EP07873225.2A priority patent/EP2079335A4/fr
Priority to PCT/US2007/081470 priority patent/WO2008140548A2/fr
Publication of US20080086908A1 publication Critical patent/US20080086908A1/en
Abandoned legal-status Critical Current

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    • 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
    • A43B7/28—Adapting the inner sole or the side of the upper of the shoe to the sole 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
    • A43B13/12—Soles with several layers of different materials
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A43B17/18—Arrangements for attaching removable insoles to footwear

Definitions

  • the present invention relates generally to footwear, and in particular an insert that is substantially permanently deformable.
  • an insole which may conform to the contours of the foot.
  • insoles that are deformable and provide cushioning to the user's foot. Often these insoles comprise a thin foam material. These cushioning insoles are usually too thin to provide sufficient support to the foot. Some inserts have preformed contours.
  • Gudas U.S. Pat. No. 4,677,766 discloses an insert for an article of footwear constructed of resilient material having a depression for the first metatarsal head, a raised portion for the second, third, and fourth metatarsal heads, a full arch support, and an eccentric heel seat. Inserts, like those disclosed in Gudas, are configured generally to fit all or most individuals. Articles of footwear that are configured to fit the particular contours of a particular individual foot may fit a single person or a very narrow group of people, but at the same time, they may cause a great deal of discomfort to other people. In other words, the more targeted an insole design is, the more likely it will be very comfortable to a small select group of individuals, but be more uncomfortable to a larger group of other individuals.
  • Wolps U.S. Pat. No. 4,167,824 discloses an insole insert which comprises an open cell foam base capable of conforming to and substantially retaining the shape of compressive forces applied thereto, an elastic closed cell foam layer having a maximum compression set of less than 50% and a stretch fabric bonded to one face of the closed cell foam layer.
  • the drawback of this design is that the open cell foam may only mold to the foot of the wearer after repeated use. There is still a need for a substantial “break in” period for the Wolps design.
  • Johnson discloses a multi-layered insole that supports the foot, provides impact resistance, and conforms to the shape of the foot. It comprises a pliable yet supporting heel-cup layer, a high impact foam later that sets very little, and an image foam later that sets to the wearer's foot shape thereby forming a cushion fit to the foot bed.
  • a drawback of this invention is that a heel cup is necessary to provide structure to the insole and other layers so that the insole holds its shape. However the heel cup does not extend over the full length of the insert. There is a need in the art for a foam based insert that molds to the foot and does not require the use of an additional heel cup for structural support.
  • an insert that can be molded substantially permanently to the contours of a wearer's foot, eliminating the usually long break in period, and that may be constructed from the fewest possible materials to provide a light weight insole. Additionally, there is a need for such an insert that can be easily inserted into an article of footwear and can reduce in-shoe motion of the foot.
  • an article of footwear including a substantially permanently deforming insert is disclosed.
  • the present invention provides an article of footwear comprising: an outsole and an insert; an outer member being configured to contact the ground; an insert including an outer layer configured to contact the outer member, and an inner layer configured to contact the wearer's foot; and where the inner layer is substantially permanently deformable.
  • the outer member includes an outsole.
  • the outer member includes a midsole and an outsole.
  • the outer member includes an intermediate layer, a midsole and an outsole.
  • the inner layer substantially permanently deforms after being worn for the first time.
  • the inner layer substantially permanently deforms after being worn for about a couple of hours.
  • the invention provides an article of footwear comprising: an outer member and an insert; the outer member being configured to contact the ground; an insert including an outer layer configured to contact the outer member, and an inner layer; and where the inner layer is made of any material capable of taking a quick compression set.
  • the outer member includes an outsole.
  • the outer member includes a midsole and an outsole.
  • the outer member includes an intermediate layer, a midsole and an outsole.
  • the inner layer is made of polyethylene foam having a specific gravity of about 0.05.
  • the inner layer is made of a soft polyethylene foam, being a blend of ethyl vinyl acetate and rubber.
  • the intermediate layer comprises ethyl vinyl acetate.
  • the outer layer comprises a polyethylene foam.
  • the invention provides an article of footwear comprising: an outer member and an insert; the outer member being configured to contact the ground; an insert including an outer layer configured to contact the outsole, and an inner layer configured to contact the outer layer; where the outer layer includes at least one surface feature disposed on the outer layer; and where the surface feature increases friction between the outer member and the outer layer.
  • the outer member includes an outsole.
  • the outer member includes a midsole and an outsole.
  • the outer member includes an intermediate layer, a midsole and an outsole.
  • the surface feature comprises diamond-shaped extensions.
  • the present invention provides an article of footwear comprising: an outsole and an insert; the outsole being configured to contact the ground; an insert including an outer layer configured to contact the outsole, and an inner layer configured to contact the outsole; where the outer layer includes a first region having a first coefficient of friction and a second region having a second coefficient of friction; and where the second coefficient of friction is greater than the first coefficient of friction.
  • the outer member includes an outsole.
  • the outer member includes a midsole and an outsole.
  • the outer member includes an intermediate layer, a midsole and an outsole.
  • the second region replaces an adhesive
  • the present invention provides an article of footwear comprising: an outsole and an insert; the outsole being configured to contact the ground; an insert including an outer layer configured to contact the outsole, and an inner layer configured to contact the outsole; where the outer layer includes a first region having a first roughness and a second region having a second roughness; and where the second roughness is greater than the first roughness.
  • the outer member includes an outsole.
  • the outer member includes a midsole and an outsole.
  • the outer member includes an intermediate layer, a midsole and an outsole.
  • the second region replaces an adhesive
  • FIG. 1 is an exploded isometric view of a preferred embodiment of article of footwear 100 ;
  • FIG. 2 is a side cross-sectional view of a preferred embodiment of an insert
  • FIG. 3 is a front cross-sectional view of a preferred embodiment of an insert prior to contact with a wearer's foot;
  • FIG. 4 is a front cross-sectional view of a preferred embodiment of an insert during contact with a wearer's foot
  • FIG. 5 is a front cross-sectional view of a preferred embodiment of an insert after contact with a wearer's foot
  • FIG. 6 is a plan view of the bottom of a preferred embodiment of an insert
  • FIG. 7 is a side cross-sectional view of a preferred embodiment of an insert and an outer member
  • FIG. 8 is a side cross-sectional close-up of a preferred embodiment of an insert and an outer member.
  • FIG. 9 is a side cross-sectional close-up of a preferred embodiment of an insert and an outer member.
  • embodiments of the present invention include an article of footwear with an insert intended to provide cushioning and support.
  • An insert that includes two foam layers, including a layer that substantially permanently deforms and conforms to the shape of the foot is disclosed.
  • deformation preferably takes place over a relatively short interval of time.
  • the deformation occurs during the first use of the article of footwear.
  • FIG. 1 is an exploded isometric view of a preferred embodiment of article of footwear 100 .
  • Article of footwear 100 preferably includes upper 102 .
  • Article of footwear 100 also preferably includes insert 104 as well as outer member 106 .
  • Insert 104 is preferably disposed between upper 102 and outer member 106 .
  • Insert 104 may be added or removed from article of footwear 100 , by insertion or removal through opening 108 .
  • Opening 108 of upper 102 is also preferably configured to receive a wearer's foot.
  • Outer member 106 is preferably configured to contact the ground during use of article of footwear 100 .
  • outer member 106 may include any member configured to contact insert 104 .
  • outer member 106 may include a midsole and an outsole. In other embodiments, outer member 106 may include just an outsole.
  • outer member 106 may optionally include intermediate layer 110 .
  • Intermediate layer 110 may be any layer disposed between outer member 106 and insert 104 . In some embodiments, intermediate layer 110 may be a strobel sock.
  • FIG. 2 is a side cross-sectional view of a preferred embodiment of insert 104 .
  • Insert 104 preferably includes inner layer 202 and outer layer 204 .
  • Inner layer 202 preferably includes first side 206 and second side 208 .
  • outer layer 204 preferably includes first side 210 and second side 212 .
  • Second side 208 of inner layer 202 is preferably configured to contact first side 210 of outer layer 204 .
  • Inner layer 202 and outer layer 204 are preferably attached. In some embodiments, inner layer 202 and outer layer 204 are attached by an adhesive. In other embodiments, inner layer 202 and outer layer 204 are attached by some other means.
  • outer layer 204 is preferably configured to contact outer member 106 and inner layer 202 is preferably configured to contact a wearer's foot.
  • insert 104 includes first edge 214 and second edge 216 .
  • First edge 214 is a portion of outer layer 204 that wraps around first end 220 of inner layer 202 .
  • second edge 216 is a portion of outer layer 204 that wraps around second end 222 of inner layer 202 .
  • the lateral and medial sides of outer layer 204 wrap around the later and medial edges of inner layer 202 in a manner similar to the way that first edge 214 and second edge 216 wrap around ends 220 and 222 of inner layer 202 .
  • only first side 206 of inner layer 202 may be exposed in some embodiments.
  • the top of first edge 214 and the top of second edge 216 are flush with first side 206 of inner layer 202 , forming first surface 218 .
  • First surface 218 is generally the upper surface of insert 104 .
  • outer layer 204 comprises a first material and inner layer 202 comprises a second material.
  • inner layer 202 comprises a material that is substantially permanently deformable.
  • inner layer 202 comprises any material capable of taking a quick compression set.
  • inner layer 202 comprises a polyethylene foam having a specific gravity of about 0.05. In a preferred embodiment, inner layer 202 comprises a soft polyethylene foam.
  • outer layer 204 comprises a material that is more rigid than inner layer 202 .
  • outer layer 204 comprises a type of polyethylene foam that is more rigid than the soft polyethylene foam that is used in some embodiments to form inner layer 202 .
  • the shape of insert 104 is defined by outer layer 204 , as it preferably does not change shape during use. In this way, first edge 214 and second edge 216 provide structural support to insert 104 at the forward and rearward ends of insert 104 .
  • FIG. 3 is a schematic diagram of a front cross-sectional view of a preferred embodiment of insert 104 prior to receiving a wearer's foot 302 .
  • inner layer 202 has not been deformed, and instead has a smooth shape that is generally coincident with the shape of outer layer 204 .
  • Wearer's foot 302 includes first region 306 and second region 308 .
  • First region 306 and second region 308 represent possible contours that may be found on the bottom of a foot.
  • First region 306 and second region 308 are only meant to represent a portion of a wearer's foot.
  • a wearer's foot will generally include many other regions, including other contours.
  • insert 104 includes insert liner 304 that helps to provide extra cushioning for a wearer's foot.
  • insert liner 304 may include additional properties that may be desirable for a footwear insert.
  • Insert liner 304 may comprise a cloth material in some embodiments.
  • Insert liner 304 includes first side 310 and second side 312 . Second side 312 of insert liner 304 is disposed along first surface 218 of insert 104 . First side 310 of insert liner 304 is disposed closest to wearer's foot 302 .
  • FIG. 4 is a front cross-sectional view of a preferred embodiment of insert 104 upon receiving wearer's foot 302 .
  • Wearer's foot 302 contacts first side 206 of inner layer 202 .
  • inner layer 202 has both deformed and conformed to wearer's foot 302 . That is, inner layer 202 has deformed to receive first region 306 and second region 308 of wearer's foot 302 .
  • Inner layer 202 has deformed less in central region 402 , which fills a natural gap between first region 306 and second region 308 . In this way, inner layer 202 has molded to wearer's foot 302 .
  • Outer layer 204 has generally deformed less than inner layer 202 , in some cases, much less or not at all, when compared to inner layer 202 .
  • inner layer 202 has deformed and conformed to other regions of a wearer's foot, which are located in a direction perpendicular to this cross-sectional view.
  • FIG. 5 is a front cross-sectional view of a preferred embodiment of insert 104 , once wearer's foot 302 has been removed, being worn for enough time to permanently deform inner layer 202 . Note that inner layer 202 of insert 104 is substantially permanently deformed.
  • inner layer 202 has been substantially permanently deformed after the insert has been used for the first time. In some embodiments, inner layer 202 has been substantially permanently deformed after one to several hours, for example, one to three hours. In some embodiments, inner layer 202 can be substantially permanently deformed after about two hours of continuous or combined intermittent use. After inner layer 202 has been deformed, inner layer 202 includes first deformed region 502 , corresponding to first region 306 of wearer's foot 302 . Inner layer 202 also includes second deformed region 504 , corresponding to second region 308 of wearer's foot 308 .
  • first side 206 disposed along first deformed region 502 are substantially similar to the contours of region 306 of wearer's foot 302 .
  • contours of first side 206 disposed along second deformed region 504 are substantially similar to the contours of region 308 of wearer's foot 302 .
  • Outer layer 204 has preferably kept its original shape, maintaining the overall shape of insert 104 .
  • Inner layer 202 is configured to remain permanently substantially deformed for the remainder of the period during which insert 104 is used with article of footwear 100 . Because of this, the wearer now has a custom fit insert that is substantially permanently contoured to the shape of their foot. As previously mentioned, this contouring provides comfort and additional support to the wearer's foot during use of article of footwear 100 . Generally, insert 104 will retain this custom fit shape in the future. For example, referring to the embodiment shown in the figures, first deformed region 502 and second deformed region 504 will generally retain their shape and will generally not further deform by any substantial amount during future use of insert 104 provided the same person wears article of footwear 100 . Instead, first inner layer 104 will set, so that first side 206 of inner layer 202 provides support to wearer's foot 302 along first deformed region 502 and second deformed region 504 .
  • a removable insert is designed to be inserted directly into an article of footwear after the article of footwear has been assembled.
  • some fastening mechanism may be provided to increase friction between the insert and the outer member.
  • the insert may adhere to the outsole member in a manner that reduces movement of the insert within the upper. This friction mechanism eliminates the need for an adhesive, or other cumbersome features, that may prove time consuming or inefficient in fixing insert 104 to outer member 106 .
  • FIG. 6 is a schematic diagram of a preferred embodiment of bottom surface 602 of insert 104 .
  • Bottom surface 602 is an embodiment of second side 212 of outer layer 204 .
  • Bottom surface 602 preferably includes a portion that increases friction between bottom surface 602 and outer member 106 .
  • Bottom surface 602 of insert 104 preferably includes a first region 610 and a second region 611 .
  • Second region 611 includes a first roughened region 604 and second roughened region 606 .
  • First roughened region 604 and second roughened region 606 preferably include surface features. In some embodiments, these surface features may increase friction between outer layer 204 and outer member 106 .
  • first region 610 has a first coefficient of friction
  • second region 611 including first roughened region 604 and second roughened region 606 , has a second coefficient of friction.
  • the second coefficient of friction of second region 611 is greater than the first coefficient of friction of first region 610 .
  • FIG. 7 is a side cross-sectional view of a preferred embodiment of insert 104 and outer member 106 , just before insert 104 has been moved to contact outer member 106 . From this cross-sectional view, it can be seen that first roughened region 604 and second roughened region 606 extend slightly from bottom surface 602 of insert 104 . The extension of these regions is not necessarily to scale in FIG. 7 or in the following figures, but is shown schematically exaggerated for clarity.
  • FIG. 8 is a close up cross-sectional view of a preferred embodiment of insert 104 , including first roughened region 604 , before it has contacted outer member 106 .
  • first roughened region 604 includes extended portions 802 , which extend from bottom surface 602 of insert 104 .
  • outer member 106 includes optional intermediate layer 110 . Intermediate layer 110 of outer member 106 is seen to be smooth, relative to first roughened region 604 .
  • first roughened region 604 comprises the same material as outer layer 204 of insert 104 . That is, first roughened region 604 may comprise a rigid polyethylene foam. In a preferred embodiment, the shape of extended portions 802 may be diamond-like. In some embodiments, intermediate layer 110 or outer member 106 may be comprised of ethyl vinyl acetate. Intermediate layer 110 and outer member 106 are preferably constructed of a softer foam than the foam of first roughened region 604 .
  • FIG. 9 is a close up cross-sectional view of a preferred embodiment of insert 104 , including first roughened region 604 , during contact with outer member 106 .
  • intermediate layer 110 and outer member 106 have deformed via contact with multiple extended portions 802 .
  • the deformation of outer member 106 in this region creates dented region 902 , which prevents first roughened region 604 , and thus insert 104 , from slipping.
  • second roughened region 606 is configured to associate with outer member 106 in a similar fashion. That is, second roughened region 606 also preferably includes extended portions that cause intermediate layer 110 of outer member 106 to deform, creating a grooved fit that helps prevent insert 104 from slipping with respect to outer member 106 .

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
US11/549,755 2006-10-16 2006-10-16 Article of Footwear with Deforming Insert Abandoned US20080086908A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US11/549,755 US20080086908A1 (en) 2006-10-16 2006-10-16 Article of Footwear with Deforming Insert
EP07873225.2A EP2079335A4 (fr) 2006-10-16 2007-10-16 Article chaussant avec insert déformant
PCT/US2007/081470 WO2008140548A2 (fr) 2006-10-16 2007-10-16 Article chaussant avec insert déformant

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US11/549,755 US20080086908A1 (en) 2006-10-16 2006-10-16 Article of Footwear with Deforming Insert

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Cited By (6)

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US20120272547A1 (en) * 2011-04-26 2012-11-01 Salomon S.A.S. Footwear with improved sole assembly
US20130081303A1 (en) * 2011-09-30 2013-04-04 BZ3, Inc. Orthopedic cushioning device
US20140150291A1 (en) * 2012-11-30 2014-06-05 Scot K LARSEN Impact Resistant Running Shoe Insert
US20180055143A1 (en) * 2016-08-25 2018-03-01 Nike, Inc. Sole structure for an article of footwear having grooves and a flex control insert with ribs
US10750819B2 (en) 2015-11-05 2020-08-25 Nike, Inc. Sole structure for an article of footwear having nonlinear bending stiffness with compression grooves and descending ribs
US10986893B2 (en) 2015-09-18 2021-04-27 Nike, Inc. Footwear sole structure with compression grooves and nonlinear bending stiffness

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WO2008140548A3 (fr) 2016-06-09
WO2008140548A2 (fr) 2008-11-20
EP2079335A2 (fr) 2009-07-22

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