Knitted component with tensile strands for adjusting auxetic portions

Abstract

The present application relates to a knitted component having a tensile strand with an adjustable auxetic portion. A knitted component is formed of a unitary knitted construction and is configured to stretch. The knitted component includes a knitted element, the knitted element including an auxetic portion configured to move between a first position and a second position as the knitted component stretches. The knitted component also includes a tensile strand formed of a unitary knitted construction together with the knitted element. When in the first position, the auxetic portion has an area. The tensile strand is engaged with the knitted element proximate the auxetic portion. The tensile strand is configured to be manipulated to selectively change the area of the auxetic portion to change the stretch characteristics of the knitted component.

Description

[0001] This application is a divisional application of an application filed on August 20, 2015, with application number 202010103044.2, and the invention name is “Knitted component of a tensile strand with an adjustable tensile portion (original name: “Knitted component of a tensile strand with an adjustable tensile portion and footwear comprising the component”)”.

[0002] The application with the application date of August 20, 2015, the application number of 202010103044.2, and the invention name of “Knitted component of tensile cord with adjustable tensile expansion portion (original name of “Knitted component of tensile cord with adjustable tensile expansion portion and footwear article including the component”)” is a divisional application of the application with the application date of August 20, 2015, the application number of 201580046183.3, and the invention name of “Knitted component of tensile cord with adjustable tensile expansion portion and footwear article including the component”. Technical Field

[0003] The present application relates generally, but is not limited to, knitted components and articles of footwear including the same. background

[0004] Clothing, footwear, and other articles can include one or more knitted components. Knitted components can add desired flexibility and resilient stretch to an article. Furthermore, knitted components can provide the article with the appropriate softness and texture. Due to the knitted components, the article can also be durable and strong. Furthermore, the efficiency provided by the knitting process can facilitate the manufacture of the article.

[0005] For example, footwear can include one or more knitted components. The knitted components can at least partially define the upper of the footwear. The knitted components can be relatively lightweight and yet durable enough to withstand the rigors of strenuous exercise. Furthermore, these knitted items can provide the footwear with a unique and attractive appearance. Furthermore, the knitted components allow the footwear to be manufactured efficiently. Brief Description

[0006] A knitted component is disclosed that is formed of a unitary knitted construction and is configured to stretch. The knitted component includes a knitted element having an auxetic portion configured to move between a first position and a second position as the knitted component stretches. The knitted component also includes a tensile strand formed of a unitary knitted construction with the knitted element. When in the first position, the auxetic portion has an area. The tensile strand engages the knitted element proximate the auxetic portion. The tensile strand is configured to be manipulated to selectively vary the area of the auxetic portion to change the stretch characteristics of the knitted component.

[0007] In some embodiments, the knit element includes an auxetic portion and an adjacent region proximate the auxetic portion;

[0008] wherein the auxetic portion includes a boundary separating the auxetic portion from an adjacent region;

[0009] The area of the auxetic part is defined within the boundary;

[0010] wherein the tensile strands are joined to the knitted elements proximate the boundary; and

[0011] Wherein the tensile strand is configured to be manipulated for selectively moving the boundary to vary the area of the auxetic portion.

[0012] In some embodiments, the tensile strands are secured to the knitted elements proximate the boundary.

[0013] In some embodiments, the tensile strand is joined to the knit element at a location near the boundary;

[0014] wherein the tensile strand has a longitudinal axis, and

[0015] The tensile strand is configured to slide relative to the location along the longitudinal axis of the tensile strand and remain engaged with the knitted element at the location.

[0016] In some embodiments, the boundary includes a first side and a second side that intersect at a vertex;

[0017] wherein the first side is configured to rotate about the vertex relative to the second side as the auxetic portion moves between the first position and the second position; and

[0018] The tensile strands are joined to the knitted elements near the apex.

[0019] In some embodiments, the apex is one of a plurality of vertices of the auxetic portion;

[0020] wherein the tensile strands are engaged with the plurality of vertices; and

[0021] Wherein the tensile strand is configured for selectively moving the plurality of vertices relative to each other to selectively vary the area and to vary the stretch properties of the knitted component.

[0022] In some embodiments, the auxetic portion has greater elasticity than adjacent regions.

[0023] In some embodiments, the auxetic portion is generally shaped as a concave triangle.

[0024] In some embodiments, the tensile strand includes an exposed segment exposed from the knit element;

[0025] wherein the tensile strand comprises an inlaid segment inlaid within the knitted element;

[0026] wherein the inlaid segment is engaged with the knitted element proximate the auxetic portion; and

[0027] Wherein the exposed segment is configured to be manipulated to selectively change the area of the auxetic portion.

[0028] In some embodiments, the tensile strand includes a first end, a second end, and an intermediate section extending between the first end and the second end;

[0029] wherein the exposed section includes one of a first end and a second end;

[0030] wherein the mosaic segment includes a middle segment; and

[0031] One of the first end and the second end is configured to be manipulated to selectively change an area of the auxetic portion.

[0032] In some embodiments, the tensile strand includes a first end, a second end, and an intermediate section extending between the first end and the second end;

[0033] wherein the exposed section includes an intermediate section; and

[0034] Wherein the intermediate section is configured to be manipulated to selectively change the area of the auxetic portion.

[0035] In some embodiments, the knitted component further comprises a fixation device configured to have a fixed position and a non-fixed position.

[0036] wherein in the secured position, the securing device maintains a set tension in the tensile strand; and

[0037] Wherein in the non-secured position, the securing device does not secure the tensile strand relative to the knitted element to allow adjustment of the area of the auxetic portion.

[0038] In some embodiments, the tensile strands are inlaid within one of the courses and wales of the knit elements.

[0039] In some embodiments, a knitted component defines at least a portion of an upper of an article of footwear.

[0040] In some embodiments, a knitted component defines at least a portion of an article of apparel.

[0041] In some embodiments, the tensile strand is configured to selectively increase the area of the auxetic portion as tension in the tensile strand increases.

[0042] In some embodiments, the tensile strand is configured to selectively reduce the area of the auxetic portion as tension in the tensile strand increases.

[0043] Additionally, an article of footwear is disclosed, comprising a sole structure and an upper attached to the sole structure. The upper comprises a stretchable knitted component formed of a unitary knit construction. The knitted component comprises a knitted element having an auxetic portion. The auxetic portion is configured to move between a first position and a second position as the knitted component stretches. The knitted component further comprises a tensile strand formed of a unitary knit construction together with the knitted element. When in the first position, the auxetic portion has an area. The tensile strand engages the auxetic portion. The tensile strand is configured to be manipulated to selectively vary the area of the auxetic portion to alter the stretch properties of the knitted component.

[0044] In some embodiments, the tensile strand includes a first end, a second end, and an intermediate section extending between the first end and the second end;

[0045] wherein a first section of the intermediate segment extends through the knitted element and engages the auxetic portion;

[0046] wherein a second section of the intermediate section is exposed from the knitted element; and

[0047] Wherein the second segment is configured to be manipulated to selectively vary the area of the auxetic portion.

[0048] In some embodiments, the article of footwear further comprises a securing device;

[0049] wherein the second segment defines a loop that receives a fixation device to attach the fixation device to the shoe upper;

[0050] wherein the securing device is configured to move between a first position and a second position;

[0051] wherein in the first position, the securing device substantially maintains a first tension level in the tensile strand such that the area is at a first area; and

[0052] Wherein in the second position, the securing device substantially maintains a second level of tension in the tensile strand such that the area is at a second area.

[0053] In some embodiments, the securing device is a shoe lace.

[0054] In addition, a knitted component is disclosed that is formed of a unitary knitted construction. The knitted component is configured to stretch. The knitted component includes a knitted element having an auxetic portion configured to move between a first position and a second position as the knitted component stretches. The auxetic portion has a boundary. The knitted component also includes a tensile strand embedded in the knitted element and formed of a unitary knitted construction with the knitted element. When in the first position, the auxetic portion has an area. The tensile strand extends through the auxetic portion and engages a first portion and a second portion of the boundary. The tensile strand is configured to be manipulated to selectively move the first portion relative to the second portion to change the area of the auxetic portion to change the stretch characteristics of the knitted component.

[0055] In some embodiments, the tensile strand is secured to the knit element at at least one of the first location and the second location.

[0056] Other systems, methods, features and advantages of the present disclosure will be or will become apparent to one of ordinary skill in the art after examining the following drawings and detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description and this summary, be within the scope of the present disclosure, and be protected by the following claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The present disclosure may be better understood with reference to the following drawings and descriptions. The components in the drawings are not necessarily drawn to scale, but rather emphasis is placed on illustrating the principles of the present disclosure. In addition, in the drawings, like reference numerals denote corresponding parts throughout the different views.

[0058] Figure 1 is an isometric view of a knitted component having an auxetic portion according to an exemplary embodiment of the present disclosure;

[0059] Figure 2 According to an exemplary embodiment of the present disclosure Figure 1 Detailed view of the knitted parts;

[0060] Figure 3 According to another embodiment of the present disclosure Figure 1 Detailed view of the knitted parts;

[0061] Figure 4 is shown in the first neutral position Figure 1 a top view of a knitted component;

[0062] Figure 5 is shown in a second stretched position Figure 1 a top view of a knitted component;

[0063] Figure 6 yes Figure 4Detailed view of the embodiment of the present invention, wherein portions of the knitted component are shown in a neutral position;

[0064] Figure 7 yes Figure 5 Detailed view of a portion of the knitted component shown in a stretched position;

[0065] Figure 8 yes Figure 4 Detailed view of the embodiment of the present invention, wherein portions of the knitted component are shown in a neutral position;

[0066] Figure 9 yes Figure 5 Detailed view of a portion of the knitted component shown in a stretched position;

[0067] Figure 10 is shown in the adjusted neutral position Figure 1 a top view of a knitted component;

[0068] Figure 11 is shown in a stretched position Figure 10 a top view of a knitted component;

[0069] Figure 12 yes Figure 10 Detailed view of the embodiment of the present invention, wherein portions of the knitted component are shown in a neutral position;

[0070] Figure 13 yes Figure 11 Detailed view of a portion of the knitted component shown in a stretched position;

[0071] Figure 14 is a detailed view of a knitted component shown in a neutral position according to an additional embodiment of the present disclosure;

[0072] Figure 15 is shown in a stretched position Figure 14 Detailed view of the knitted parts;

[0073] Figure 16 is shown in the adjusted neutral position Figure 14 Detailed view of the knitted parts;

[0074] Figure 17 is shown in a stretched position Figure 16 Detailed view of the knitted parts;

[0075] Figure 18 is a plan view of a knitted component for an article of footwear according to an additional embodiment of the present disclosure;

[0076] Figure 19 Is a Figure 18a side view of an article of footwear comprising a knitted component;

[0077] Figure 20 is shown in a neutral position Figure 19 a top view of an article of footwear;

[0078] Figure 21 is shown in the adjusted neutral position Figure 20 a top view of an article of footwear;

[0079] Figure 22 is a front elevational view of an article of apparel having a knitted component shown in a neutral position; and

[0080] Figure 23 yes Figure 22 A front view of an article of clothing with the knitted component in an adjusted neutral position. DETAILED DESCRIPTION

[0081] Example embodiments will now be described more fully with reference to the accompanying drawings.

[0082] The following discussion and accompanying figures disclose various concepts related to knitted components that can be used and / or included in various objects, such as articles of footwear, apparel, or other articles.

[0083] Furthermore, the following discussion and accompanying figures disclose knitted components that exhibit auxetic properties during stretching. It should be understood that the term "auxetic," as used herein, generally refers to an object having a negative Poisson's ratio. Thus, when a tensile force is applied to an auxetic knitted component, the knitted component can stretch in the same direction in which the tensile force is applied, and the knitted component can also expand in another direction, such as perpendicular to the direction in which the force is applied. Furthermore, the term "auxetic," as used herein, refers to an object that exhibits a negative Poisson's ratio in some types of stretching and a positive Poisson's ratio in other types of stretching.

[0084] In addition, the knitted component can have elasticity to recover toward an unstretched or neutral position when the stretching force is reduced. For example, in some embodiments, the knitted component can include one or more portions that exhibit auxetic properties when stretched and recover toward a neutral position when released.

[0085] Furthermore, the following discussion and accompanying figures disclose various concepts that allow for selectively varying the auxetic portion and / or stretch properties of a knitted component. For example, in some embodiments, a knitted component can include one or more features that allow a user to select and vary the size, shape, and / or surface area of the auxetic portion. As a result, the user can alter the stretch properties of the auxetic portion and / or the stretch properties of the knitted component.

[0086] Construction of Exemplary Knitted Components

[0087] First reference Figure 1 , shows a knitted component 100 according to an exemplary embodiment of the present disclosure. Knitted component 100 can have a variety of shapes, sizes, and properties. Moreover, knitted component 100 can be configured and / or incorporated into a particular object. For example, in some embodiments, knitted component 100 can be incorporated into an article of footwear. In other embodiments, knitted component 100 can be incorporated into an article of apparel.

[0088] As in Figure 1 As shown in the exemplary embodiment of , the knitted component 100 can be relatively thin and sheet-like. In some embodiments, the knitted component 100 can also be flexible and stretchable. Additionally, in some embodiments, the knitted component 100 can be resilient. Thus, the knitted component 100 can stretch when a tensile load is applied, and when the tensile load is reduced, the knitted component 100 can return to its original size. By way of example, Figure 4 The knitted component 100 is shown in a neutral position, and Figure 5 Knitted component 100 is shown in a stretched position.

[0089] As in Figure 1 As shown in , knitted component 100 can define a polygonal shape. In some embodiments, for example, knitted component 100 can define a quadrilateral and can include four sides. More specifically, as shown in Figure 1 and Figure 4 As shown in , the knitted component 100 may include a first edge 112, a second edge 114, a third edge 116, and a fourth edge 118. The edges 112, 114, 116, 118 may be arranged at any angle relative to each other. Thus, the knitted component 100 may define a rectangle, a parallelogram, or other quadrilateral. However, it should be understood that the knitted component 100 may have any suitable shape, including a rounded shape, such as a circle, an oval, or other rounded shape.

[0090] In addition, the knitted component 100 can include a front 120 and a back 122. The knitted component 100 can have any suitable thickness measured between the front 120 and the back 122. In some embodiments, the thickness can be substantially constant across the knitted component 100. In other embodiments, the thickness can vary. Moreover, in some embodiments, the front 120 and / or the back 122 can define one or more raised areas, one or more recessed areas, ribs, ripples, or other surface variations.

[0091] Furthermore, the knitted component 100 can extend in various directions. For example, the knitted component 100 can span primarily along a first direction 140 and a second direction 142. Furthermore, the thickness of the knitted component 100 can be measured generally along a third direction 139 between the front face 120 and the back face 122. Furthermore, the third edge 116 and the fourth edge 118 can extend generally along the first direction 140, and the first edge 112 and the second edge 114 can extend generally along the second direction 142.

[0092] The knitted component 100 can be formed by a plurality of interconnected yarns, cables, fibers, filaments or other strands. Moreover, the knitted component 100 can be formed by a unitary knitted construction.

[0093] As defined herein and used in the claims, the term "unitary knit construction" means that the knitted component 100 is formed as a one-piece element by a knitting process. That is, the knitting process generally forms the various features and structures of the knitted component 100 without requiring significant additional manufacturing steps or processes. The unitary knit construction can be used to form a knitted component having a structure or element that includes one or more courses of yarn or other knitted material that are connected so that the structure or element includes at least one common course (i.e., shares a common strand or common yarn), and / or the structure or element includes a course that is generally continuous between each portion of the knitted component 100. With this arrangement, a one-piece element of a unitary knit construction is provided.

[0094] Although portions of the knitted component 100 may be coupled to one another after the knitting process, the knitted component 100 remains formed of a unitary knitted construction because it is formed as a one-piece knitted element. Furthermore, when other elements are added after the knitting process (e.g., inlaid strands, closure elements, logos, trademarks, labels with instructions for use and material information, and other structural elements), the knitted component 100 remains formed of a unitary knitted construction.

[0095] Knitted component 100 may generally include a knitted element 130 and one or more tensile strands 132. Knitted element 130 and tensile strand 132 may be formed of unitary knit construction with one another.

[0096] Knitting element 130 can define a majority of knitted component 100. Thus, in some embodiments, knitting element 130 can substantially define front 120, back 122, first edge 112, second edge 114, third edge 116, and fourth edge 118. In some embodiments, knitting element 130 can be stretchable. To provide this stretchability, in some embodiments, knitting element 130 can be formed with yarn or strands configured to stretch (e.g., stretch yarn). Moreover, in some embodiments, due to the knitted construction used to form knitting element 130, knitting element 130 can be stretchable.

[0097] Moreover, in some embodiments, at least a portion of tensile strand 132 can extend through and / or through knit element 130. For example, tensile strand 132 can include a first end 141, a second end 143, and a middle portion 145 extending longitudinally between first end 141 and second end 143. Figure 1 and Figure 4 , intermediate portion 145 can extend through and through knit element 130. First end 141 and second end 143 can extend from and be exposed from knit element 130. Specifically, in some embodiments, first end 141 can extend from third edge 116, second end 143 can extend from fourth edge 118, and intermediate portion 145 can extend generally along second direction 142 through knit element 130. However, it should be understood that tensile strand 132 can be arranged in any suitable position relative to knit element 130. For example, in some embodiments, first end 141 and / or second end 143 of tensile strand 132 can be non-exposed and embedded in knit element 130. Furthermore, in some embodiments, one or more areas of intermediate portion 145 can be exposed from knit element 130.

[0098] The tensile strands 132 can provide support for the knitted component 100. More specifically, in some embodiments, the tension in the strands 132 can allow the knitted component 100 to resist deformation, resist stretching, or otherwise provide support for objects placed near the knitted component 100. Moreover, the tensile strands 132 can be used to change, adjust, modify, select, or otherwise alter one or more properties of the knitted element 130 and the knitted component 100. For example, the strands 132 can be manipulated by the wearer, by the manufacturer, by an automatic actuator, or by another input to change the properties. By manipulating the strands 132, various properties can be changed. For example, in some embodiments, the stretchability, resistance to stretch, range of stretch, or other properties related to stretching of the knitted component 100 can be changed. Moreover, in some embodiments, by adjusting the tensile strands 132, one or more dimensions of the knitted component 100 can be changed.

[0099] Now refer to Figure 2 and Figure 3 , the knitted element 130 and the tensile strand 132 according to various embodiments will be discussed in greater detail. Figure 2 As shown in , the knitted element 130 of the knitted component 100 can be formed from at least one yarn 134, cable, filament, fiber, or other strand that is manipulated (e.g., with a knitting machine) to form a plurality of staggered loops. The loops can be staggered in a plurality of courses 136 extending along a second direction 142 and in a plurality of wales 138 extending along a first direction 140. In addition, as shown in Figure 2 As shown in , knit element 130 and tensile strand 132 may be formed of a unitary knit construction.

[0100] The tensile strands 132 can be attached to and engaged with the knitted element 130 in any manner. For example, in some embodiments, at least a portion of the strands 132 can be inlaid into one or more courses 136 and / or wales 138 of the knitted element 130 so that the strands 132 can be incorporated during the knitting process on the knitting machine. More specifically, as in Figure 2 , tensile strand 132 can be positioned alternately between: (a) behind the loops formed by yarn 134; and (b) in front of the loops formed by yarn 134. In effect, tensile strand 132 is woven through the unitary knit construction of knit element 130. As a result, in some embodiments, tensile strand 132 can be disposed within knit element 130 between front face 120 and back face 122 of knit component 100.

[0101] exist Figure 2 14. In the embodiment of the present invention, the strand 132 is shown as being inlaid within a single course 136, and thus the strand 132 extends primarily along the second direction 142. However, it should be understood that the strand 132 can be inlaid within a single wale 138 of the knit element 130, such that the strand 132 extends primarily along the first direction 140. In other embodiments, different segments of the strand 132 can extend along different courses 136 of the knit element 130. Furthermore, in some embodiments, different segments of the strand 132 can extend along different wales 138 of the knit element 130. Furthermore, in some embodiments, the strand 132 can extend through the knit element 130 in both the first direction 140 and the second direction 142.

[0102] The yarn 134 that forms knitting element 130 can be any suitable type.For example, the yarn 134 of knitting element 130 can be made of cotton, elastic fiber, rayon, wool, nylon, polyester or other materials.And, in some embodiments, yarn 134 can be elastic and resilient.Like this, yarn 134 can stretch on length from first length, and yarn 134 can be biased to return to its first length.Therefore, this elastic yarn 134 can allow knitting element 130 to stretch elastically and resiliently under the influence of force.When this force reduces, knitting element 130 can return to its neutral position.

[0103] In addition, in some embodiments, yarn 134 can be at least partially formed by a thermosetting polymer material, which can melt when heated and return to a solid state when cooled. Like this, yarn 134 can be a fusible yarn and can be used to couple two objects or elements together. In other embodiments, knitting element 130 can include a combination of fusible yarn and non-fusible yarn. In some embodiments, for example, knitting component 100 can be constructed according to the teaching of U.S. Patent Application No. 2012 / 0233882, disclosed on September 20, 2012, and the disclosure of this application is incorporated by reference in its entirety at this. Knitting component 100 can also be constructed according to the teaching of U.S. Patent Application No. 2014 / 0150292, disclosed on June 5, 2014, and this application is incorporated by reference in its entirety at this.

[0104] Furthermore, in some embodiments, a single yarn 134 can form each of the courses 136 and wales 138 of the knit element 130. In other embodiments, the knit element 130 can include multiple yarns. For example, different yarns can form different courses 136 and / or different wales 138. In other embodiments, multiple yarns can cooperate to define common loops, common courses, and / or common wales. For example, as in Figure 3As shown in FIG, knitted component 100 may include a plurality of yarns that are grouped together, overlap each other, and generally extend in the same longitudinal direction through corresponding courses 136. In some embodiments, for example, first yarn 135 may be formed from at least one of a thermosetting polymer material and a natural fiber (e.g., cotton, wool, silk). Furthermore, second yarn 137 may be formed from a thermosetting polymer material, such as a fusible yarn of the type disclosed in U.S. Patent No. 6,910,288, issued to Dua on June 28, 2005, entitled "Footwear Incorporating a Textile with Fusible Filaments and Fibres," which is incorporated herein by reference in its entirety.

[0105] The tensile strand 132 can also be, for example, any suitable type of strand, yarn, cable, rope, filament (e.g., monofilament), thread, rope, webbing, or chain. The thickness of the tensile strand 132 can be greater than the yarn 134 of the knitting element 130. In some configurations, the tensile strand 132 can have a significantly greater thickness than the yarn of the knitting element 130. Although the cross-sectional shape of the tensile strand 132 can be circular, a triangular, square, rectangular, oval, or irregular shape can also be used. In addition, the material forming the tensile strand 132 can include any one of the materials of the yarn 134 used for the knitting element 130, such as cotton, spandex, polyester, rayon, wool, and nylon. As described above, the tensile strand 132 can exhibit a greater resistance to stretching than the knitting element 130. Thus, suitable materials for tensile strands 132 may include various engineered filaments for high tensile strength applications, including glass, aromatic polyamides (e.g., para-aramid and meta-aramid), ultra-high molecular weight polyethylene, and liquid crystal polymers. As another example, braided polyester yarns may also be used as tensile strands 132.

[0106] The tensile strands 132 and other portions of the knitted component 100 may additionally incorporate the teachings of one or more of the following patent applications: commonly owned U.S. patent application Ser. No. 12 / 338,726 to Dua et al., entitled “Article of Footwear Having An Upper Incorporating A Knitted Component,” filed Dec. 18, 2008, and published as U.S. Patent Application No. 2010 / 0154256 on Jun. 24, 2010; U.S. patent application Ser. No. 13 / 048,514 to Huffa et al., entitled “Article Of Footwear Incorporating A Knitted Component,” filed Mar. 15, 2011, and published as U.S. Patent Application No. 2012 / 0233882 on Sep. 20, 2012; and U.S. patent application Ser. No. 13 / 056,515 to Podhajny et al., entitled “Method of Knitting A Knitted Component with a Vertically Inlaid Tensile Strength Fabric.” Element”; U.S. patent application Ser. No. 13 / 781,336, filed on February 28, 2013, and published on August 28, 2014 as U.S. patent application Ser. No. 2014 / 0237861 A1, each of which is hereby incorporated by reference in its entirety.

[0107] Now refer to Figure 1 and Figure 4 , the knitted element 130 according to an exemplary embodiment will be discussed in more detail. The knitted element 130 may include multiple knitted structures, regions, areas, or portions formed from a unitary knitted construction but having different properties. These different properties may relate to appearance, stitch density, texture, stretch resistance, elasticity, resiliency, or other properties.

[0108] For example, the knit element 130 may include a first region 150 proximate the first edge 112, a second region 152 proximate the second edge 114, and a third region 154 disposed between the first region 150 and the second region 152. In some embodiments, the first region 150 and the second region 152 may be substantially uniform and continuous. In contrast, the third region 154 may include multiple knitted areas that differ in one or more ways. For example, the third region 154 may include one or more auxetic portions 156 and an adjacent region 158 disposed adjacent to the auxetic portion 156.

[0109] exist Figure 1 and Figure 4In some embodiments shown, the third region 154 can include a plurality of auxetic portions 156 spaced apart from one another in the first direction 140 and the second direction 142. Adjacent zones 158 of the knit element 130 can be defined between the auxetic portions 156. In some embodiments, the adjacent zones 158 can continuously surround, border, or encircle one or more auxetic portions 156. The adjacent zones 158 can also be substantially continuous with (i.e., formed as a one-piece element with) one or more auxetic portions 156. Moreover, in some embodiments, the adjacent zones 158 can be substantially continuous with the first region 150 and the second region 152. Thus, the auxetic portions 156, the adjacent zones 158, the first region 150, and the second region 152 can be formed of a unitary knit construction. Additionally, as shown in Figure 1 , the auxetic portion 156 can be exposed on the front face 120 and the back face 122 of the knit element 130. Furthermore, in some embodiments, the auxetic portion 156 can be incorporated into adjacent areas 158 of the knit element 130 by known inlay knitting processes.

[0110] In some embodiments, the auxetic portion 156 can be defined by a boundary 159 and an interior region 161. In some embodiments, the boundary 159 can demarcate the respective auxetic portion 156 from adjacent areas of the knit element 130. In some embodiments, the boundary 159 can continuously surround and frame the interior region 161. Furthermore, the size or area of the interior region 161 of the auxetic portion 156 can be defined within the boundary 159. Moreover, in some embodiments, the boundary 159 can be spaced apart from the edges 112, 114, 116, 118 of the knitted component 100. In other embodiments, the boundary 159 can intersect the first edge 112, the second edge 114, the third edge 116, and / or the fourth edge 118.

[0111] The auxetic portion 156 can have any suitable size or area. For example, in some embodiments, the auxetic portion 156 can have an area of approximately 0.25 square inches (in 2 ) to approximately 5 square inches (in 2 ) is the area between .

[0112] The auxetic portion 156 can have one or more physical properties that differ from the first region 150, the second region 152, and / or the adjacent region 158. For example, the auxetic portion 156 can be more elastic, more easily stretched, and less stiff than the first region 150, the second region 152, and / or the adjacent region 158. In other words, the auxetic portion 156 can have a lesser degree or amount of resistance to stretching than the first region 150, the second region 152, and / or the adjacent region 158.

[0113] These differences in elasticity can be achieved in a variety of ways. For example, in some embodiments, the knit construction of the auxetic portion 156 can be different from that of the first region 150, the second region 152, and / or the adjacent region 158 to cause the auxetic portion 156 to be more elastic than the first region 150, the second region 152, and / or the adjacent region 158.

[0114] Furthermore, in some embodiments, the auxetic portion 156 can be constructed from a yarn that is more elastic than the yarns of the first region 150, the second region 152, and / or the adjacent zone 158 to account for this difference in elasticity. More specifically, in some embodiments, one or more elastic, stretchable yarns can be used to form the auxetic portion 156. In contrast, less elastic or substantially inelastic yarns can be used to form the first region 150, the second region 152, and the adjacent zone 158.

[0115] Moreover, in some embodiments, first region 150, second region 152, and adjacent region 158 can be formed by yarns made of thermoplastic. In some embodiments, these thermoplastic yarns can be heated and partially melted and fused to adjacent yarns to impart additional stiffness to the corresponding regions of knit element 130. In some embodiments, these thermoplastic yarns may not be present in auxetic portion 156.

[0116] In further embodiments, a coating or skin may be applied to the first region 150, the second region 152, and the adjacent region 158 to impart additional stiffness to these areas of the knit element 130. The coating or skin may not be present in the auxetic portion 156.

[0117] The knitted component 100 may be obtained from Figure 4 The first position (i.e., neutral position) shown in FIG is stretched to Figure 5 It should be understood that Figure 4 and Figure 5 An exemplary embodiment of stretching of knitted component 100 is shown; however, it should be understood that knitted component 100 can exhibit different stretching behaviors without departing from the scope of the present disclosure.

[0118] As in Figure 5 As shown in the embodiment of , a stretching force can be applied as indicated by arrow 157. As a result, knitted component 100 can stretch, causing first edge 112 and second edge 114 to move away from each other and causing knitted component 100 to elongate in first direction 140. Because auxetic portion 156 exhibits auxetic properties, the stretching can also cause third edge 116 and fourth edge 118 to move away from each other and cause knitted component 100 to become wider in second direction 142. For example, as shown in Figure 5As shown in FIG, the third region 154 can expand in the second direction 142, while the first region 150 and the second region 152 can maintain substantially the same width in the second direction 142. The stretching behavior will be discussed in more detail below.

[0119] Furthermore, as discussed in detail below, the tensile strand 132 can be engaged with the knit element 130 proximate to at least one of the plurality of auxetic portions 156. The tensile strand 132 can be engaged with any number of the auxetic portions 156. Furthermore, the tensile strand can be manipulated to selectively change one or more dimensions of the auxetic portions 156. As a result, the stretching behavior of the auxetic portions 156 and / or the knit element 130 can be selectively altered.

[0120] Implementation of the Auxetic Section

[0121] The auxetic portion 156 according to an exemplary embodiment will now be discussed in detail. Figure 4 、 Figure 6 and Figure 8 Discuss the shape and geometry of the auxetic portion 156. It should be understood that Figure 6 and Figure 8 The auxetic portion 156 shown in FIG. 1 may be representative of other auxetic portions 156 of the knitted component 100 .

[0122] The boundaries 159 of the auxetic portion 156 can have any variety of geometric shapes. In some embodiments, one or more boundaries 159 can have a polygonal geometry. In some embodiments, the shape of the auxetic portion 156 can be characterized as a regular polygon, such that the angle defined between adjacent sides is equal to the corresponding angle within the polygon. Furthermore, the boundaries 159 can be characterized as including a specific number of vertices and edges (or sides). In some embodiments, these edges can be substantially straight. Furthermore, in some embodiments, these edges can be curved.

[0123] Other geometric shapes are also possible, including various polygonal and / or curved geometries. Exemplary polygonal shapes that can be used with one or more of the auxetic portions 156 include, but are not limited to, regular polygonal shapes (e.g., triangles, rectangles, pentagons, hexagons, etc.) as well as irregular polygonal or non-polygonal shapes. Other geometric shapes can be described as quadrilaterals, pentagons, hexagons, heptagons, octagons, or other polygonal shapes with concave edges. Additionally, some embodiments can include a border 159 having a geometry that includes straight edges connected by vertices and curved or non-linear edges that do not have any sharp points or vertices.

[0124] about Figure 6 and Figure 8In an embodiment, the auxetic portion 156 can be characterized as having six sides and six vertices. For example, the auxetic portion 156 can include a first side 164, a second side 166, a third side 168, a fourth side 170, a fifth side 172, and a sixth side 174. Additionally, the auxetic portion 156 can include a first vertex 176, a second vertex 178, a third vertex 180, a fourth vertex 182, a fifth vertex 184, and a sixth vertex 186. The first side 164 and the sixth side 174 can intersect at the first vertex 176. The first side 164 and the second side 166 can intersect at the second vertex 178. The second side 166 and the third side 168 can intersect at the third vertex 180. The third side 168 and the fourth side 170 can intersect at the fourth vertex 182. The fourth side 170 and the fifth side 172 can intersect at the fifth vertex 184. The fifth side 172 and the sixth side 174 may intersect at a sixth vertex 186 .

[0125] Additionally, in some embodiments, the geometry of the auxetic portion 156 can be generally shaped as a so-called re-entrant triangle. Thus, the auxetic portion 156 can be characterized as a triangle having sides that are not straight but rather have inwardly pointing vertices at the midpoints of the sides. Thus, the second vertex 178, the fourth vertex 182, and the sixth vertex 186 can be positioned closer to the center of the interior region 161 than the first vertex 176, the third vertex 180, and the fifth vertex 184. In other words, the second vertex 178, the fourth vertex 182, and the sixth vertex 186 can each be characterized as an "inwardly pointing vertex." In contrast, the first vertex 176, the third vertex 180, and the fifth vertex 184 can each be characterized as an "outwardly pointing vertex." The inwardly pointing vertices 178, 182, 186 can define an exterior angle 167 (i.e., a re-entrant angle). In some embodiments, the exterior angle 167 can be in the range of approximately 120 to 180 degrees. Additionally, the vertices of the auxetic portion can define a plurality of interior angles 165. For example, the interior angles 165 can be defined at the first vertex 176, the third vertex 180, and the fifth vertex 184. In some embodiments, when the auxetic portion 156 is in a neutral, unstretched position, the first vertex 176, the third vertex 180, and the fifth vertex 184 can have an interior angle 165 that is less than 180 degrees.

[0126] In some embodiments, the auxetic portions 156 can be arranged in a regular pattern on the knit element 130. The auxetic portions 156 can be substantially evenly spaced apart from one another across the knit element 130. In some embodiments, the auxetic portions 156 can be arranged such that each vertex of one auxetic portion 156 is disposed proximate to a vertex of another auxetic portion 156 (e.g., an adjacent or nearby auxetic portion 156). More specifically, in some embodiments, the first vertex 176 of one auxetic portion 156 can be disposed proximate to or adjacent to a fourth vertex 182 of another auxetic portion 156. Similarly, the second vertex 178 of one auxetic portion 156 can be disposed proximate to or adjacent to a fifth vertex 184 of another auxetic portion 156. Furthermore, the third vertex 180 of one auxetic portion 156 can be disposed proximate to or adjacent to a sixth vertex 186 of another auxetic portion 156.

[0127] When the knitted element 130 is Figure 4 、 Figure 6 and Figure 8 Stretch from neutral position to Figure 5 、 Figure 7 and Figure 9 When the knit element 130 is stretched, the auxetic portion 156 can deform. The size or area of the inner region 161 can increase as the knit element 130 stretches.

[0128] More specifically, as in Figure 6 and Figure 7 As shown in FIG, at the third vertex 180, a representative interior angle 165 is indicated between the second side 166 and the third side 168. At the fourth vertex 182, a representative exterior angle 167 is indicated between the third side 168 and the fourth side 170. By comparison Figure 6 and Figure 7 , it is apparent that when the auxetic portion 156 stretches, the inner angle 165 and / or the outer angle 167 may increase. Figure 6-Figure 9 As shown in the auxetic portion 156, each inner angle 165 and each outer angle 167 can increase proportionally; however, it should be understood that in some embodiments, different inner angles 165 and / or different outer angles 167 can increase non-proportionally.

[0129] Moreover, in some embodiments, the auxetic portion 156 can auxetically deform as the knit element 130 stretches. For example, by comparing Figure 7 and Figure 6 Notably, as knitted component 100 stretches, auxetic portion 156 enlarges in both first direction 140 and second direction 142 .

[0130] More specifically, as in Figure 6 and Figure 8As shown in FIG, the knit element 130 adjacent the auxetic portion 156 can have a corresponding unstretched length 188 measured in the first direction 140 and a corresponding unstretched width 192 measured in the second direction 142. Figure 7 and Figure 9 When a stretching force is applied as indicated by arrow 157 in FIG, the knit element 130 can have a stretched length 190 and a stretched width 194. The stretched length 190 can be greater than the unstretched length 188, and the stretched width 194 can be greater than the unstretched width 192. In addition, the knit element 130 proximate the auxetic portion 156 can define a stretch range. The stretch range can be measured in the first direction 140 as the difference between the stretched length 190 and the unstretched length 188. In addition, the stretch range can be measured in the second direction 142 as the difference between the stretched width 194 and the unstretched width 192. In other embodiments, the stretch range can be measured as the surface area of the auxetic portion 156 when it is in its stretched position and the surface area of the auxetic portion 156 when it is in its stretched position. Figure 6 The difference between the surface areas in the unstretched neutral position is shown in .

[0131] Thus, the knitted element 130 adjacent to the auxetic portion 156 may be auxetically stretched due to the stretching force indicated by arrow 157. Figure 5 As shown in FIG, when stretched in the first direction 140, the knit element 130 can expand in the second direction 142, particularly in the third region 154. In some embodiments, once the stretching force is reduced, the resilient force of the auxetic portion 156 can cause the auxetic portion 156 to expand toward Figure 6 and Figure 8 Thus, the knitted element 130 can be easily stretched and can be biased to return to its unstretched position.

[0132] Tensile strands and associated auxetic sections

[0133] As described above, the tensile strands 132 can extend through the knitted element 130. The tensile strands 132 can be engaged with one or more auxetic portions 156. For example, as in Figure 4 and Figure 8 As shown in , the plurality of auxetic portions 156 may include a first auxetic portion 162 to which the tensile strands 132 are joined. Figure 4 and Figure 6 As shown in FIG, the plurality of auxetic portions 156 may include a second auxetic portion 160 , and the tensile strand 132 is spaced apart from and disengaged from the second auxetic portion 160 .

[0134] As in Figure 8, the tensile strand 132 can extend primarily in the second direction 142 through the first auxetic portion 162. The tensile strand 132 can intersect the boundary 159 of the auxetic portion 162 at a first point 196 and a second point 198. In some embodiments, the first point 196 can be located along the sixth side 174, and the second point 198 can be located along the first side 164. Segments of the tensile strand 132 can also extend through the interior region 161 of the auxetic portion 162 between the first point 196 and the second point 198. However, it should be understood that the tensile strand 132 can extend through any suitable portion of the auxetic portion 162 without departing from the scope of the present disclosure.

[0135] Moreover, in some embodiments, the tensile strand 132 can be embedded within one or more courses 136 and / or wales 138 that define the auxetic portion 162. For example, in some embodiments, the tensile strand 132 can be embedded within a single course 136 that defines the auxetic portion 162. In other embodiments, the tensile strand 132 can extend from one course 136 to another course 136 as it extends through the auxetic portion 162. In other embodiments, the tensile strand 132 can be embedded within one or more wales 138 of the auxetic portion 162.

[0136] In some embodiments, tensile strand 132 can be secured to knit element 130 proximate auxetic portion 162. For example, tensile strand 132 can be secured to knit element 130 proximate boundary 159. More specifically, in some embodiments, tensile strand 132 can be secured to knit element 130 proximate first point 196 and / or second point 198. For example, tensile strand 132 can be secured at point 196 and / or point 198 using an adhesive, by a fastener, by a knot, or in another manner.

[0137] In other embodiments, tensile strand 132 may be engaged with knit element 130 by friction; however, tensile strand 132 may slide along its longitudinal axis relative to first point 196 and / or second point 198 and remain engaged with knit element 130 at first point 196 and / or second point 198. For example, in some embodiments, tensile strand 132 may be movably engaged with knit element 130 at first point 196 and second point 198 in this manner.

[0138] Because the tensile strand 132 engages the knit element 130, for example, near the auxetic portion 162, the tensile strand 132 can be manipulated to alter, move, modify, change, or distort the auxetic portion 162. For example, a user can manipulate the tensile strand 132 to select and change the area, size, and / or geometry of the interior region 161 of the auxetic portion 162. In some embodiments, increasing the tension in the tensile strand 132, for example by pulling on the tensile strand 132, can increase the size of the interior region 161. In other embodiments, increasing the tension in the tensile strand 132 can decrease the size of the interior region 161. The stretch properties of the knit element 130, such as the stretch range of the knit element 130, can be related to the size of the interior region 161. Thus, using the tensile strand 132 can alter the stretch properties of the auxetic portion 156, and therefore the stretch properties of the knit element 130.

[0139] For example, in Figure 10 and Figure 12 As shown in FIG, a user can manipulate the tensile strand 132 to modify the auxetic portion 162 by pulling the first end 141 and the second end 143 away from each other (as indicated by arrow 200). In this way, the tensile strand 132 can pull the first point 196 and the second point 198 of the auxetic portion 162 away from each other. For comparison, the initial neutral position of the auxetic portion 162 is Figure 12 The adjusted neutral position of the auxetic portion 162 is shown in solid lines. Arrow 201 represents the movement of the boundary 159. Specifically, as shown in Figure 12 As shown in FIG, as a result of manipulating the tensile strand 132, the first side 164 and the sixth side 174 of the auxetic portion 162 can be rotated substantially about the first vertex 176 and moved away from each other. This can also cause the second vertex 178 and the sixth vertex 186 to move outward from the center of the auxetic portion 162. Thus, by pulling on the tensile strand 132, the interior area 161 of the auxetic portion 162 can be increased. In addition, as a result of modifying the auxetic portion 162, the knit element 130 can be moved in a knitted pattern. Figure 12 The representative region shown in may have a length 202 and a width 204 .

[0140] In some embodiments, Figure 12 The length 202 and width 204 shown in FIG may be substantially equal to the Figure 8 188 and width 192 are shown in FIG. In other words, in some embodiments, the size of the knit element 130 can remain substantially unchanged despite adjusting the size of the auxetic portion 162. In other embodiments, adjustment of the auxetic portion 162 can result in a change in the overall size of the knit element 130.

[0141] According to some embodiments, Figure 13, the stretching of the knit element 130 after adjusting the auxetic portion 162. As shown, when the knit element 130 is stretched in the first direction 140 (as indicated by arrow 157), the auxetic portion 162 can elongate from its adjusted length 202 to a stretched length 206, and the auxetic portion 162 can widen from its adjusted width 204 to a stretched width 208.

[0142] In some embodiments, under the same amount of stretching force (as indicated by arrow 157), Figure 13 The stretched length 206 may be greater than Figure 9 The stretched length is 190. Similarly, Figure 13 The stretched width 208 may be greater than Figure 9 Thus, it will be appreciated that by increasing the area of the interior region 161 of the auxetic portion 162 using the tensile strands 132, the stretch range of the auxetic portion 162 may be increased.

[0143] Using the tensile strands 132 to adjust the stretch properties of the auxetic portion 162 can result in adjusting the stretch properties of the knit element 130. For example, as in Figure 11 , the third edge 116 and / or the fourth edge 118 of the knit element 130 can define a raised or expanded region 210 in an area proximate the auxetic portion 162. In some embodiments, when the knit element 130 is stretched, both the third edge 116 and the fourth edge 118 can define an expanded region 210. Thus, the tensile strand 132 can be used to increase the stretch range of one or more portions of the knit element 130.

[0144] exist Figure 8 、 Figure 10 and Figure 12 In the embodiment of FIG. 1 , when the knit element 130 is in the neutral position, the tensile strand 132 is manipulated to increase the size of the interior region 161 of the auxetic portion 162. As a result, as in FIG. Figure 9 、 Figure 11 and Figure 13 , the stretch range of the auxetic portion 162 and the knit element 130 is increased. However, it should be understood that the tensile strand 132 can be used to modify the stretch properties of the auxetic portion 156 and the knit element 130 in other ways without departing from the scope of the present disclosure.

[0145] For example, in some embodiments, the tensile strand 132 can be manipulated to reduce the size of the interior region 161 of one or more auxetic portions 156. As a result, the stretch range of the knit element 130 can be reduced. Additionally, in some embodiments, the tensile strand 132 can be manipulated to increase the size of the interior region 161 of the auxetic portion 156, and as a result, the stretch range of the knit element 130 can be reduced. Additionally, in some embodiments, the tensile strand 132 can be manipulated to reduce the size of the interior region 161 of the auxetic portion 156, and as a result, the stretch range of the knit element 130 can be increased.

[0146] Figure 14-17 Another embodiment of the tensile strand 132 and the auxetic portion 162 is shown. This embodiment may be generally similar to Figures 8-12 In another embodiment, the tensile strands 132 may be routed differently through the knitted element 130.

[0147] For example, as in Figure 14 , the tensile strand 132 can extend through the knit element 130 and the auxetic portion 162 along a first direction 140 and a second direction 142. In some embodiments, the tensile strand 132 can zigzag through the auxetic portion 162. Thus, in some embodiments, the tensile strand 132 can extend through a plurality of courses 136 and a plurality of wales 138 as the tensile strand 132 extends through the auxetic portion 162 and the knit element 130.

[0148] In addition, as in Figure 14 In the embodiment shown, tensile strand 132 can engage knit element 130 near second vertex 178, fourth vertex 182, and sixth vertex 186 of auxetic portion 162. In some embodiments, tensile strand 132 can be secured to one or more of these vertices. Furthermore, in some embodiments, tensile strand 132 can be engaged to one or more of these vertices as a result of being embedded within knit element 130 near these vertices. However, in some embodiments, tensile strand 132 can move relative to these vertices (e.g., along its longitudinal axis).

[0149] Specifically, in some embodiments, tensile strand 132 may be secured to fourth vertex 182, and tensile strand 132 may be nested within second vertex 178 and sixth vertex 186. As such, tensile strand 132 may move relative to second vertex 178 and sixth vertex 186. Thus, tensile strand 132 may be secured to knit element 130 at fourth vertex 182, and tensile strand 132 may be movably engaged with knit element 130 at second vertex 178 and sixth vertex 186.

[0150] Figure 15The auxetic portion 162 is shown when the knit element 130 is stretched (as indicated by arrow 157). As shown, the auxetic portion 162 can be substantially similar to Figure 9 The embodiment of the present invention is stretched in a manner similar to that of the embodiment of the present invention.

[0151] As in Figure 16 As shown in FIG, the end of tensile strand 132 can be pulled (as shown by arrow 200). As a result, tensile strand 132 can pull second vertex 178, fourth vertex 182, and sixth vertex 186 inwardly toward each other (as shown by arrow 200). Figure 16 2. Thus, by pulling on the ends of the tensile strands 132, the size of the interior region 161 can be reduced.

[0152] When the knitted element 130 is stretched in the first direction 140 (e.g. Figure 17 As shown by arrow 157 in FIG, the auxetic portion 162 can stretch and grow. However, by comparing Figure 15 and Figure 17 As will be apparent, the adjusted stretched length 206 may be less than the initial stretched length 190 . Likewise, the adjusted stretched width 208 may be less than the initial stretched width 194 .

[0153] Thus, the tensile strand 132 can be used to adjust the size of the auxetic portion 162. In some embodiments, the tensile strand 132 can be pulled to make the auxetic portion 162 larger or smaller, depending on how the tensile strand 132 is engaged with the auxetic portion 162. As a result, the stretch behavior of the knit element 130 can be selected. In some embodiments, for example Figure 11 and Figure 13 In these embodiments, the knit element 130 can have an increased stretch range due to adjustments to the size of the auxetic portion 162. In other embodiments, such as Figure 17 In the embodiment of the present invention, the knitted element 130 can have a reduced stretch range due to the adjustment of the size of the expansion portion 162.

[0154] In some embodiments, after the auxetic portion 162 has been adjusted using the tensile strand 132, the tensile strand 132 can be secured relative to the knit element 130 so that the auxetic portion 162 remains at its adjusted neutral size. For example, the first end 141 and / or the second end 143 can be secured in a fixed position relative to the tensile strand 132 to maintain tension in the tensile strand 132 and to maintain the auxetic portion 162 at its adjusted size. In some embodiments, the first end 141 and the second end 143 can be directly secured together, such as with a knot, to maintain the set tension in the tensile strand 132. In other embodiments, a fastener, spool, or other object can be included for removably securing to the tensile strand 132 to maintain the selected tension in the tensile strand 132. Furthermore, in some embodiments, after the tensile strand 132 is released, the elasticity of the knit element 130 can cause the auxetic portion 162 to return to its original, neutral, unstretched size.

[0155] Article of footwear having an adjustable auxetic portion

[0156] Various objects and articles can be constructed to include knitted components of the type discussed above. For example, as in Figures 18-21 As shown in , knitted component 1030 for article of footwear 1000 is shown according to an exemplary embodiment.

[0157] As in Figures 19-21 As shown in FIG, footwear 1000 generally includes a sole structure 1010 and an upper 1020. Upper 1020 may include a knitted component 1030. Knitted component 1030 is Figure 18 are shown independently in Figures 19-21 1010 and other features are shown in association with sole structure 1010. As will be discussed, knitted component 1030 may include the Figures 1-17 Thus, knitted component 1030 can include one or more auxetic portions, and at least one of the auxetic portions can be adjustable.

[0158] For reference purposes, footwear 1000 can be divided into three general areas: a heel region 1002, a midfoot region 1003, and a forefoot region 1004. Heel region 1002 generally may include the portion of footwear 1000 corresponding to the rear portion of the wearer's foot, including the heel and calcaneal bone. Midfoot region 1003 generally may include the portion of footwear 1000 corresponding to the middle portion of the wearer's foot, including the arch area. Forefoot region 1004 generally may include the portion of footwear 1000 corresponding to the front portion of the wearer's foot, including the toes and the joints connecting the metatarsal bones to the phalanges.

[0159] Footwear 1000 may also include a medial side 1005 and a lateral side 1006. In some embodiments, medial side 1005 and lateral side 1006 may extend through heel region 1002, midfoot region 1003, and forefoot region 1004. Medial side 1005 and lateral side 1006 may correspond to opposite sides of footwear 1000. More specifically, lateral side 1006 may correspond to an outside area of a wearer's foot (i.e., a surface facing away from the other foot), and medial side 1005 may correspond to an inside area of a wearer's foot (i.e., a surface facing toward the other foot). Heel region 1002, midfoot region 1003, forefoot region 1004, medial side 1005, and lateral side 1006 are not intended to demarcate precise areas of footwear 1000. Rather, heel area 1002 , midfoot area 1003 , forefoot area 1004 , medial side 1005 , and lateral side 1006 are intended to represent general areas of footwear 1000 to assist in the following discussion.

[0160] Footwear 1000 can also extend in various directions. For example, footwear 1000 can extend along a longitudinal direction 1007, a lateral direction 1008, and a vertical direction 1009. Longitudinal direction 1007 can extend generally between heel region 1002 and forefoot region 1004. Transverse direction 1008 can extend generally between medial side 1005 and lateral side 1006. Furthermore, vertical direction 1009 can extend generally perpendicular to longitudinal direction 1007 and lateral direction 1008. It should be understood that longitudinal direction 1007, lateral direction 1008, and vertical direction 1009 are included merely for reference purposes and to provide assistance in the following discussion.

[0161] Now refer to Figure 19Let's discuss an embodiment of a sole structure 1010. The sole structure 1010 may include an upper surface 1011 attached to an upper 1020 and may include a lower surface 1013 facing away from the upper 1020 and defining a ground-engaging surface of the sole structure 1010. In some embodiments, the sole structure 1010 may include a midsole 1012 and an outsole 1014. The midsole 1012 may include a resilient, compressible material, a fluid-filled bladder, or the like. Thus, the midsole 1012 may cushion the wearer's foot and attenuate impact and other forces when running, jumping, or performing similar activities. The midsole 1012 may at least partially define the upper surface 1011 of the sole structure 1010. The outsole 1014 may be secured to the midsole 1012 and may include a wear-resistant material, such as rubber or the like. Outsole 1014 may also include a tread and other traction enhancing features.Outsole 1014 may define a lower surface 1013 of sole structure 1010.

[0162] Moreover, in some embodiments, sole structure 1010 can include one or more auxetic portions that allow sole structure 1010 to auxetically stretch and deform. For example, in some embodiments, sole structure 1010 and / or other aspects of footwear 1000 can include features disclosed in U.S. patent application Ser. No. 14 / 470,067, entitled “Auxetic Sole with Upper Cabling,” filed co-filed with the present application on Aug. 27, 2014, the disclosure of which is incorporated by reference in its entirety.

[0163] Now refer to Figures 19-21 Let's discuss embodiments of upper 1020. As shown, upper 1020 can define a void 1022 for receiving a wearer's foot. In other words, upper 1020 can define an interior surface 1021 that defines void 1022, and upper 1020 can define an exterior surface 1023 that faces in a direction opposite interior surface 1021. When a wearer's foot is received within void 1022, upper 1020 can at least partially surround and encase the wearer's foot. Thus, in some embodiments, upper 1020 can extend around heel region 1002, midfoot region 1003, forefoot region 1004, medial side 1005, and lateral side 1006.

[0164] Upper 1020 may include a main opening 1024 that provides access to space 1022. Upper 1020 may also include a throat 1028. Throat 1028 may extend from collar main opening 1024 toward forefoot area 1004. Throat 1028 dimensions may vary to alter the width of footwear 1000 between medial side 1005 and lateral side 1006. Thus, throat 1028 may affect the fit and comfort of article of footwear 1000.

[0165] In some embodiments, for example, Figures 19-21 In some embodiments, throat 1028 may be an "open" throat 1028 in which upper 1020 includes a throat opening 1025 extending from main opening 1024 toward forefoot area 1004 and defined between medial side 1005 and lateral side 1006. In other embodiments, throat 1028 may be a "closed" throat in which upper 1020 is substantially continuous and uninterrupted between medial side 1005 and lateral side 1006.

[0166] Furthermore, throat 1028 can include a tongue 1026 disposed within throat opening 1025. For example, in some embodiments, tongue 1026 can be attached to forefoot region 1004 at its front end, and tongue 1026 can be separate from medial side 1005 and lateral side 1006. Thus, tongue 1026 can substantially fill throat opening 1025.

[0167] Article of footwear 1000 may also include a securing member 1015 for selectively adjusting the fit of footwear 1000 on the wearer's foot. In some embodiments, securing member 1015 may include laces 1017. However, it should be understood that securing member 1015 may include straps, buckles, hook-and-loop ties, buttons, or other types of members that allow for the selection of how tight footwear 1000 fits on the wearer's foot. Figures 19-21 As shown in the embodiment of FIG, lace 1017 can extend back and forth between medial side 1005 and lateral side 1006 and can be secured to medial side 1005 and lateral side 1006. Thus, by varying the tension of lace 1017, the girth of upper 1020 in lateral direction 1008 can be adjusted. Furthermore, once the fit is desired, the user can tie lace 1017 into a knot to secure footwear 1000 in the selected configuration.

[0168] Many conventional footwear uppers are formed from multiple material elements (e.g., textiles, polymer foams, polymer sheets, leather, synthetic leather) that are joined, for example, by stitching or bonding. In contrast, at least a portion of upper 1020 is formed and defined by knitted component 1030. Knitted component 1030 may be formed of a unitary knitted construction.

[0169] In some embodiments, knitted component 1030 can define at least a portion of space 1022 in upper 1020. Furthermore, in some embodiments, knitted component 1030 can define at least a portion of exterior surface 1023. Furthermore, in some embodiments, knitted component 1030 can define at least a portion of interior surface 1021 of upper 1020. Furthermore, in some embodiments, knitted component 1030 can define a majority of heel region 1002, midfoot region 1003, forefoot region 1004, medial side 1005, and lateral side 1006 of upper 1020. Thus, in some embodiments, knitted component 1030 can enclose a wearer's foot. Furthermore, in some embodiments, knitted component 1030 can compress the wearer's foot to secure it to the wearer's foot.

[0170] Thus, upper 1020 can be constructed with a relatively small number of material elements. This reduces waste while also improving the manufacturing efficiency and recyclability of upper 1020. Furthermore, knitted component 1030 of upper 1020 can contain fewer seams or other discontinuities, further improving the manufacturing efficiency of footwear 1000. Furthermore, interior surface 1021 of upper 1020 can be substantially smooth and uniform, enhancing the overall comfort of footwear 1000.

[0171] Features of the knitted component 1030 according to various exemplary embodiments will now be discussed in greater detail. The knitted component 1030 may generally include a knitted element 1031. The knitted element 1031 may correspond to the knitted element 1031 described above with respect to Figures 1-17 The knitted element 130 discussed above. The knitted component 1030 may also generally include at least one tensile strand 1050. The tensile strand 1050 may correspond to the knitted element 130 discussed above. Figures 1-17 Discussed tensile strand 132. Knit element 1031 and tensile strand 1050 can be formed of unitary knit construction.

[0172] Now refer to Figure 18 Discussing knitted element 1031 in greater detail, in some embodiments, knitted element 1031 can define knitted component 1030 and a substantial portion of upper 1020.

[0173] Knitted element 1031 may include lateral portion 1038 and medial portion 1040. Lateral portion 1038 may define lateral side 1006 of upper 1020 and may be configured to overlay and rest against an outside area of a wearer's foot. Additionally, medial portion 1040 may define medial side 1005 of upper 1020 and may be configured to overlay and rest against an inside area of a wearer's foot. Figure 18 As shown in FIG, lateral portion 1038 and medial portion 1040 can be coupled at front portion 1039 of knitted element 1031. Front portion 1039 can define forefoot region 1004 of upper 1020 and can be configured to cover adjacent areas of the wearer's toes, metatarsals, and foot. Furthermore, lateral portion 1038 can include lateral rear edge 1032, and medial portion 1040 can include medial rear edge 1034. Furthermore, knitted element 1031 can include peripheral edge 1036 and medial peripheral edge 1037. Peripheral edge 1036 can extend from lateral rear edge 1032, along lateral portion 1038, along front portion 1039, and along medial portion 1040, terminating at medial rear edge 1034. Inner peripheral edge 1037 may similarly extend from lateral rear edge 1032 , along lateral portion 1038 , along front portion 1039 , and along medial portion 1040 to terminate at medial rear edge 1034 .

[0174] When knitted element 1031 is assembled to define upper 1020, rear edge 1032 and rear edge 1034 can be coupled together to define seam 1042 in heel region 1002, as shown in FIG. Figure 20 and Figure 21 . Furthermore, inner peripheral edge 1037 can define main opening 1024 and throat opening 1025. Furthermore, outer peripheral edge 1036 can be disposed proximate to sole structure 1010. In some embodiments, peripheral edge 1036 can be covered by sole structure 1010. Furthermore, in some embodiments, a strobel can be attached to outer peripheral edge 1036, and the strobel can overlap and be attached to upper surface 1011 of the sole structure such that outer peripheral edge 1036 is proximate to sole structure 1010.

[0175] In some embodiments, tongue 1026 can be a separate portion from knit element 1031. For example, tongue 1026 can be attached to front portion 1039 of knit element 1031 by stitching, adhesive, fasteners, or other connecting devices. In other embodiments, tongue 1026 can be integrally attached to front portion 1039, medial portion 1040, or lateral portion 1038 of knit element 1031.

[0176] As in Figures 18-21 As shown in , knitted element 1031 may further include one or more auxetic portions 1056. It should be understood that knitted element 1031 may include any number of auxetic portions 1056. Auxetic portions 1056 may also have any suitable shape. Furthermore, auxetic portions 1056 may be arranged in any suitable location on knitted element 1031. Auxetic portions 1056 may increase the stretchability of knitted element 1031 and upper 1020. Thus, auxetic portions 1056 may be positioned in locations of upper 1020 where increased stretchability is desired. This stretchability may allow upper 1020 to better accommodate and conform to the contours of the foot. The stretching of auxetic portions 1056 may also allow the wearer's foot to flex more easily within upper 1020 while upper 1020 maintains a comfortable and supportive fit.

[0177] In some embodiments, the auxetic portion 1056 may correspond to the Figures 1-17 The auxetic portion 1056 is depicted. Thus, the auxetic portion 1056 can generally have a so-called concave triangular shape. However, the auxetic portion 1056 can have different shapes without departing from the scope of the present disclosure.

[0178] In some embodiments, the auxetic portion 1056 of the knit element 1031 can include a medial auxetic portion 1058 and a lateral auxetic portion 1060. In some embodiments, the medial auxetic portion 1058 can be disposed in the medial portion 1030 of the knit element 1031, and the lateral auxetic portion 1060 can be disposed in the lateral portion 1038. Moreover, in some embodiments, the medial auxetic portion 1058 and the lateral auxetic portion 1060 can be disposed in the midfoot region 1003. Furthermore, the medial auxetic portion 1058 and the lateral auxetic portion 1060 can be spaced a distance from the outer edge 1036 and the inner peripheral edge 1037. Furthermore, in some embodiments, the medial auxetic portion 1058 and the lateral auxetic portion 1060 can partially define respective portions of the interior surface 1021 and the exterior surface 1023 of the upper 1020.

[0179] As such, auxetic portion 1056 can allow for a high degree of stretching of upper 1020, particularly in midfoot region 1003 on medial side 1005 and lateral side 1006. For example, flexion of a wearer's foot can cause a stretching force to be applied to upper 1020 in longitudinal direction 1007. As a result, areas of upper 1020 proximate auxetic portion 1056 can stretch in longitudinal direction 1007. Moreover, as a result of the auxetic properties of upper 1020, this longitudinal stretching can cause areas of upper 1020 proximate auxetic portion 1056 to also stretch in lateral direction 1008 and / or vertical direction 1009.

[0180] In addition, similar to the above Figures 1-17 In the described embodiment, the size of the auxetic portion 1056 can be selectively adjusted using the tensile strands 1050. By adjusting the size of the auxetic portion 1056, the stretch properties of the upper 1020 can be selected and varied. For example, in a similar Figure 14-17 In an embodiment similar to Figures 8-13 In other embodiments, manipulation of tensile strand 1050 can increase the size of auxetic portion 1056 to increase the range of stretch of knitted component 1030 and upper 1020.

[0181] It should be understood that knitted component 1030 can include any number of tensile strands 1050. Furthermore, tensile strands 1050 can be routed through any suitable area of knitted element 1031.

[0182] exist Figure 18 , knitted component 1030 can include medial tensile strand 1062 that generally extends through knitted element 1031 within medial portion 1040. Knitted component 1030 can also include lateral tensile strand 1064 that extends through knitted element 1031 within lateral portion 1038.

[0183] As in Figure 18 , medial tensile strand 1062 may include a first end 1066, a second end 1068, and a middle section 1070. In the illustrated embodiment, as medial tensile strand 1062 extends generally along longitudinal direction 1007, medial tensile strand 1062 zigzags between outer peripheral edge 1036 and inner peripheral edge 1037 of medial portion 1040. Furthermore, second end 1068 may be disposed forward of first end 1066 in longitudinal direction 1007. First end 1066 may be disposed in midfoot region 1003, while second end 1068 may be disposed proximate to forward portion 1039 of knit element 1031. Furthermore, middle section 1070 of medial tensile strand 1062 may extend continuously between first end 1066 and second end 1068.

[0184] Furthermore, portions of medial tensile strand 1062 may be exposed from knit element 1031, while other portions of medial tensile strand 1062 may be surrounded, inlaid, or otherwise covered by knit element 1031. For example, in some embodiments, first end 1066, second end 1068, and / or portions of middle section 1070 may be exposed from knit element 1031. Furthermore, portions of middle section 1070 may be surrounded, inlaid, or otherwise covered by knit element 1031.

[0185] In some embodiments, intermediate section 1070 of medial tensile strand 1062 can define a plurality of transverse sections 1082 that extend generally along transverse direction 1008, as shown in FIG. Figure 18 In some embodiments, the transverse section 1082 can be inlaid in the knitted element 1031.

[0186] Moreover, the middle section 1070 can define a plurality of medial lace loops 1072. The medial lace loops 1072 can extend between adjacent lateral sections 1082 and can be exposed from the knitted element 1031. Moreover, the medial lace loops 1072 can be arranged adjacent to the inner peripheral edge 1037 of the medial portion 1040. Figures 19-21 As shown in , lace 1017 may be received in medial lace loop 1072 to secure lace 1017 to medial side 1005 of upper 1020 .

[0187] In addition, as in Figure 18 As shown in , the intermediate section 1070 of the inner tensile strand 1062 can define a plurality of outer sections 1084. The outer sections 1084 can extend between adjacent transverse sections 1082. In other embodiments, one or more outer sections 1084 can terminate near the peripheral edge 1036. The outer sections 1084 can extend from the peripheral edge 1036 and can be exposed from the peripheral edge 1036. As shown in Figures 19-21 As shown in , when knitted element 1031 is assembled and attached to sole structure 1010, exterior segment 1084 can be attached and secured to sole structure 1010.

[0188] Thus, in some embodiments, medial tensile strand 1062 can provide support and / or stretch resistance to medial side 1005 of article of footwear 1000, particularly in vertical direction 1009. Furthermore, medial tensile strand 1062 can attach lace 1017 to upper 1020.

[0189] Similarly, lateral tensile strand 1064 can include a first end 1074, a second end 1076, and a middle section 178. In the illustrated embodiment, as lateral tensile strand 1064 extends generally along longitudinal direction 1007, lateral tensile strand 1064 meanders between outer peripheral edge 1036 and inner peripheral edge 1037 of lateral portion 1038. Furthermore, second end 1076 can be disposed forward of first end 1074 in longitudinal direction 1007. First end 1074 can be disposed in midfoot region 1003, while second end 1076 can be disposed proximate to front portion 1039 of knit element 1031. Furthermore, middle section 1078 of lateral tensile strand 1064 can extend continuously between first end 1074 and second end 1076.

[0190] Furthermore, portions of lateral tensile strand 1064 may be exposed from knit element 1031, while other portions of lateral tensile strand 1064 may be surrounded, inlaid, or otherwise covered by knit element 1031. For example, in some embodiments, portions of first end 1074, second end 1076, and / or intermediate section 1078 may be exposed from knit element 1031. In other words, portions of first end 1074, second end 1076, and / or intermediate section 1078 may define an "exposed section" of tensile strand 1064. Furthermore, portions of intermediate section 1078 may be surrounded, inlaid, or otherwise covered by knit element 1031. In other words, intermediate section 1078 may define an "inlaid section" of tensile strand 1064.

[0191] In some embodiments, the intermediate section 1078 of the outboard tensile strand 1064 can define a plurality of transverse sections 1086 that extend generally along the transverse direction 1008, as shown in FIG. Figure 18 In some embodiments, transverse section 1086 can be inlaid in knitted element 1031.

[0192] Moreover, the middle section 1078 can define a plurality of lateral lace loops 1080. The lateral lace loops 1080 can extend between adjacent lateral sections 1086 and can be exposed from the knitted element 1031. Moreover, the lateral lace loops 1080 can be arranged adjacent to the inner peripheral edge 1037 of the lateral portion 1038. Figures 19-21 As shown in , lace 1017 may be received in lateral lace loop 1080 to secure lace 1017 to lateral side 1006 of upper 1020 .

[0193] In addition, as in Figure 18As shown in , the intermediate section 1078 of the outer tensile strand 1064 can define a plurality of outer section segments 1088. The outer section segments 1088 can extend between adjacent transverse segments 1086. In other embodiments, one or more outer segments 1088 can terminate near the outer peripheral edge 1036. The outer segments 1088 can extend from the outer peripheral edge 1036 and can be exposed from the outer peripheral edge 1036. As shown in Figures 19-21 As shown in , when knit element 1031 is assembled and attached to sole structure 1010, outer section portion 1088 can be attached and secured to sole structure 1010.

[0194] Thus, in some embodiments, lateral tensile strand 1064 may provide support and / or stretch resistance to lateral side 1006 of article of footwear 1000, particularly in vertical direction 1009. Furthermore, lateral tensile strand 1064 may attach lace 1017 to upper 1020.

[0195] In some embodiments, tensile strand 1050 can be engaged with auxetic portion 1056, and tensile strand 1050 can be manipulated to adjust the size of auxetic portion 1056. For example, in some embodiments, medial tensile strand 1062 can be engaged with medial auxetic portion 1058, and lateral tensile strand 1064 can be engaged with lateral auxetic portion 1060.

[0196] As in Figures 18-21 As shown in the embodiment of FIG, the tensile strand 1050 can be similar to Figure 14-17 1056. In this manner, the tensile strand 1050 can be engaged with the inner apex of the auxetic portion 1056. However, it should be understood that in other embodiments, the tensile strand 1050 can be similar to Figures 8-13 1056. In addition, the tensile strand 1050 may be engaged with other areas of the auxetic portion 1056 without departing from the scope of this disclosure.

[0197] Thus, by pulling or otherwise manipulating the tensile strand 1050, the user can change the size of the auxetic portion 1056. Figure 18 In some embodiments, first end 1066 of medial tensile strand 1062 can be pulled to reduce the size of medial auxetic portion 1058. Similarly, in some embodiments, first end 1074 of lateral tensile strand 1064 can be pulled to reduce the size of lateral auxetic portion 1060.

[0198] In other instances, with sole structure 1010 attached, a user can pull rearmost medial lace loop 1072 away from sole structure 1010. This can cause medial auxetic portion 1058 to become smaller. Similarly, a user can pull rearmost lateral lace loop 1080 away from sole structure 1010. This can cause lateral auxetic portion 1060 to become smaller.

[0199] In some embodiments, article of footwear 1000 may include a securing device for substantially maintaining a set tension in tensile strand 1050. As a result, the set dimensions of auxetic portion 1056 may be maintained.

[0200] For example, in some embodiments, lace 1017 can engage tensile strand 1050 for substantially maintaining a set tension in tensile strand 1050. Generally, lace 1017 can have a non-secured position, wherein lace 1017 does not secure tensile strand 1050 relative to knit element 1031, to allow tensile strand 1050 to be manipulated for adjusting auxetic portions 1058, 1060. Lace 1017 can also have a first secured position (in a Figure 20 ), wherein the shoelace can maintain a first tension in the tensile strand 1050 for maintaining the auxetic portions 1058, 1060 at a first size. In addition, the shoelace 1017 can have a second fixed position (at Figure 21 ), wherein lace 1017 can maintain a second amount of tension in tensile strand 1050 for maintaining auxetic portions 1058, 1060 at a second size.

[0201] More specifically, Figure 20 An embodiment is shown in which lace 1017 has been relatively loosely tied to the wearer's foot, thereby causing tensile strands 1050 to have relatively low tension. Figure 21 An embodiment is shown in which the lace 1017 has been tied relatively tightly to the foot, thereby causing the tensile strands 1050 to have a relatively high tension. Figure 20 and Figure 21 , the wearer's foot is stationary and footwear 1000 is generally in a neutral position.

[0202] Because the size of the auxetic portion 1056 is larger when the lace 1017 is loosely tied, the knitted element 1031 and the upper 1020 can have a greater range of stretch, as described in detail above. In contrast, the smaller auxetic portion 1056 present when the lace 1017 is tightly tied can allow the knitted element 1031 and the upper 1020 to have a smaller range of stretch.

[0203] Thus, in some embodiments, a user can select how much they want upper 1020 to stretch in longitudinal direction 1007, lateral direction 1008, and / or vertical direction 1009 in response to an input force. In this way, the stretching behavior of upper 1020 can be customized to the needs and desires of the wearer.

[0204] Article of clothing having an adjustable auxetic portion

[0205] Now refer to Figure 22 and Figure 23 , illustrates another embodiment of the present disclosure. As shown, article of apparel 2001 can include knitted component 2030. Knitted component 2030 can include one or more auxetic portions 2056. Knitted component 2030 can also include tension strands 2050 configured to adjust the size of auxetic portions 2056. By varying the tension in tension strands 2050, the size of auxetic portions 2056 can be selected and varied. In this way, the stretch properties, such as the stretch range, of knitted element 2031 can be selected and varied.

[0206] As in Figure 22 and Figure 23 As shown in FIG, article of apparel 2001 may be a shirt, jersey, or other article worn on the torso and / or arms. However, it should be understood that article of apparel 2001 may be configured to cover other parts of the body. In some embodiments, knitted component 2030 may define a majority of article of apparel 2001. In other embodiments, knitted component 2030 may define a localized area of apparel 2001.

[0207] Furthermore, the auxetic portion 2056 can be included in any suitable area of the garment 2001. For example, the auxetic portion 2056 can be included in an area of the garment 2001 proximal to an anatomical joint. Thus, the auxetic portion 2056 can influence the stretching of the garment 2001 that occurs when the wearer flexes the joint. Furthermore, in some embodiments, the auxetic portion 2056 can be included in an area that stretches due to flexion or other movement of the wearer's muscles. Specifically, as shown in the illustrated embodiment, the auxetic portion 2056 can be included in the sleeve 2005 in an area proximal to the wearer's elbow. Thus, for example, due to flexion of the elbow joint, the auxetic portion 2056 can stretch. More specifically, due to flexion of the elbow joint, the garment 2001 can stretch and elongate along the longitudinal axis 2007 of the sleeve 2005. Furthermore, due to the auxetic nature of the garment 2001, as a result of this stretching, the sleeve 2005 can stretch in a circumferential direction extending around the longitudinal axis 2007. Thus, in some embodiments, this circumferential stretch can effectively loosen the sleeve 2005 from the wearer's arm. Additionally, similar to the embodiments discussed above, the tensile strands 2050 can be used to adjust the extent of stretch near the elbow joint.

[0208] As in Figure 22 and Figure 23 As shown in FIG, knitted component 2030 may include knitted element 2031 and one or more tensile strands 2050. In some embodiments, tensile strand 2050 may include a first end 2051, a second end 2053, and an intermediate section 2055 defined therebetween.

[0209] In some embodiments, tensile strand 2050 can extend generally along longitudinal axis 2007 of sleeve 2005 of garment 2001. Also, in some embodiments, first end 2051 can be disposed in a proximal region of sleeve 2005 and second end 2053 can be disposed in a distal region of sleeve 2005.

[0210] The tensile strands 2050 can be joined to the auxetic portion 2056 in any suitable manner. For example, in some embodiments, the tensile strands 2050 can be joined to the auxetic portion 2056 in a manner corresponding to Figures 8-13 In other embodiments, the tensile strands 2050 may be joined to the auxetic portion 2056 in a manner corresponding to Figure 14 17. It should be understood that the tensile strand 2050 may be engaged with the auxetic portion 2056 in other manners without departing from the scope of the present disclosure.

[0211] Similar to the embodiments discussed above, a user can pull the tensile strands 2050 to change the size of the auxetic portion 2056. As a result, the range of stretch of the sleeve 2005 can be selected and adjusted. Thus, in some embodiments, the wearer can configure the sleeve 2005 to have a larger range of flexion when desired. Alternatively, the wearer can configure the sleeve 2005 to have a smaller range of flexion when desired.

[0212] In some embodiments, the first end 2051 can be fixed to the knitted element 2031. In contrast, the second end 2053 can be exposed from the knitted element 2031 and extend from the knitted element 2031. The wearer can pull the second end 2053, for example, to adjust the auxetic portion 2056. Assuming that the auxetic portion 2056 is in Figure 22 In the position of, for example, the wearer can pull the second end 2053 to adjust the auxetic portion 2056 to Figure 23 As a result, the user can expand the stretch range of garment 2001.

[0213] Additionally, in some embodiments, garment 2001 can include a securing device 2008. Securement device 2008 can be used to secure tensile strand 2050, and thereby secure auxetic portion 2056, at a selected size and position. Securement device 2008 can include a clip, tie, spool, or other embodiment that can removably secure tensile strand 2050 to knitted element 2031. In the illustrated embodiment, for example, securement device 2008 is schematically shown near cuff 2009 of garment 2001. Securement device 2008 can removably secure second end 2053 to cuff 2009 to maintain the auxetic portion at a desired size. In other embodiments, securement device 2008 can be a removable knot formed in tensile strand 2050 that can interfere with cuff 2009 to prevent second end 2053 from slipping into knitted element 2031 when sleeve 2005 is stretched.

[0214] It should be understood that garment 2001 can also include additional tensile strands 2050 in different areas, as well as additional auxetic portions 2056. These auxetic portions 2056 can be individually adjusted so that corresponding areas of garment 2001 can exhibit different stretch properties.

[0215] In summary, the knitted component discussed above can include a knitted auxetic portion that allows the knitted component to easily stretch in multiple directions as a result of applying a tensile force in one of the multiple directions. The amount of stretch can be influenced, selected, and varied by varying the size of the auxetic portion. For example, the size of the auxetic portion can be conveniently varied by manipulating and changing the tension in the tensile strands. Thus, the knitted component can be customized according to the needs and desires of the user.

[0216] Although various embodiments of the present disclosure have been described, this description is intended to be illustrative rather than restrictive, and it will be apparent to those skilled in the art that many embodiments and implementations within the scope of the present disclosure are possible. Therefore, the present disclosure is not limited except in accordance with the appended claims and their equivalents. Moreover, various modifications and changes may be made within the scope of the appended claims. In addition, as used in the claims, when citing the preceding claims, "any of" is intended to mean (i) any one claim, or (ii) any combination of two or more cited claims.

Claims

1. A knitted component formed of a unitary knitted construction, the knitted component being configured to stretch, the knitted component comprising: a knit element comprising an auxetic portion configured to move between a first position and a second position as the knit component stretches, and a tensile strand embedded within at least one of the courses and wales of the knitted element, wherein the tensile strand extends through the auxetic portion, the tensile strand being formed of unitary knit construction with the knitted element, wherein the tensile strand is configured to be manipulated to selectively vary an area of the auxetic portion to vary stretch properties of the knitted component, wherein the tensile strand is detachably secured to the knitted element by a securing device, and wherein the securing device is spaced apart from the auxetic portion.

2. The knitted component according to claim 1, wherein the securing device comprises at least one of a clip, a tie, a spool, and a removable knot formed in the tensile strand.

3. The knitted component of claim 1, wherein the knitted component is used in an article of apparel and the securing device is positioned proximate a cuff of the article of apparel.

4. The knitted component according to claim 1, wherein the fixation device is detachable from the tensile strand, and wherein the tensile strand is movable relative to the fixation device when the fixation device is in a detached state.

5. The knitted component of claim 1 , wherein the tensile strand is engaged with the knitted element at a location proximate a boundary of the auxetic portion, the tensile strand having a longitudinal axis, and wherein the tensile strand is configured to slide relative to the location along the longitudinal axis of the tensile strand and remain engaged with the knitted element at the location.

6. The knitted component according to claim 1, wherein the auxetic portion has greater elasticity than adjacent knit areas of the knitted element.

7. The knitted component according to claim 1, wherein the auxetic portion is generally shaped as a concave triangle.

8. A knitted component formed of unitary knitted construction, the knitted component configured to stretch, the knitted component comprising: a knit element comprising an auxetic portion configured to move between a first position and a second position as the knit component stretches, and a tensile strand embedded within at least one of the courses and wales of the knitted element, wherein the tensile strand extends through the auxetic portion, the tensile strand being formed of unitary knit construction with the knitted element, wherein the tensile strand is configured to be manipulated to selectively vary an area of the auxetic portion to vary stretch properties of the knitted component, The tensile strand is detachably fixed to the knitted element by a fixing device.

9. The knitted component of claim 8, wherein the securing device comprises at least one of a clip, a tie, a spool, and a removable knot formed in the tensile strand.

10. The knit component according to claim 8, wherein the tensile strand extends through the second auxetic portion.

11. The knitted component according to claim 8, wherein the fixation device is detachable from the tensile strand, and wherein the tensile strand is movable relative to the fixation device when the fixation device is in a detached state.

12. The knitted component of claim 8 , wherein the tensile strand is engaged with the knitted element at a location proximate a boundary of the auxetic portion, the tensile strand having a longitudinal axis, and wherein the tensile strand is configured to slide relative to the location along the longitudinal axis of the tensile strand and remain engaged with the knitted element at the location.

13. The knitted component according to claim 8, wherein the auxetic portion has greater elasticity than adjacent knit areas of the knitted element.

14. The knit component according to claim 8, wherein the auxetic portion is generally shaped as a concave triangle.

15. A method for forming a knitted component, comprising: forming the knitted component on a knitting machine, wherein the knitted component is formed of unitary knitted construction and is configured to stretch, and the knitted component comprises: a knit element having an auxetic portion configured to move between a first position and a second position as the knit component stretches, and a tensile strand embedded within at least one of the courses and wales of the knit element, wherein the tensile strand extends through the auxetic portion, the tensile strand being formed of unitary knit construction with the knit element, wherein the tensile strand is configured to be manipulated to selectively vary an area of the auxetic portion to alter stretch properties of the knit component; and A securing device is provided, wherein the securing device is configured to removably secure the tensile strand to the knitted element.

16. The method of claim 15, wherein the securing device comprises at least one of a clip, a tie, a spool, and a removable knot formed in the tensile strand.

17. The method of claim 15, wherein the tensile strand extends through a second auxetic portion.

18. The method of claim 15, wherein the securement device is detachable from the tensile strand, and wherein the tensile strand is movable relative to the securement device when the securement device is in the detached state.

19. An upper for an article of footwear, comprising: a knitted component formed of unitary knit construction and configured to stretch, the knitted component having a knitted element and a tensile strand extending through and engaging the knitted element, wherein the knit element includes an auxetic portion configured to move between a first position and a second position as the knit component stretches, the auxetic portion being positioned in one of a midfoot region of a medial side of the upper and a midfoot region of a lateral side of the upper, and wherein the tensile strand extends through the auxetic portion and to a throat area of the upper on one of the medial side and the lateral side, the tensile strand being formed of unitary knit construction with the knit element, wherein the tensile strand is configured to be manipulated to selectively vary an area of the auxetic portion to alter stretch properties of the knitted component.

20. The upper of claim 19, wherein the auxetic portion includes an apex on a boundary of the auxetic portion, and wherein the tensile strand is secured to the boundary of the auxetic portion at the apex.

21. The upper of claim 19, wherein the auxetic portion has greater elasticity than adjacent knit areas of the knit element.

22. The upper of claim 19, wherein an area of the auxetic portion changes as the auxetic portion moves from the first position to the second position.

23. The upper of claim 19, wherein the tensile strand is inlaid within at least one of a course and a wale of the knitted component on one of the medial side and the lateral side.

24. The upper of claim 19, wherein the auxetic portion is generally shaped as a concave triangle.

25. An upper for an article of footwear, comprising: a knitted component formed of unitary knit construction, the knitted component being configured to stretch, the knitted component having a knitted element and a tensile strand extending through and engaging the knitted element, the tensile strand being formed of unitary knit construction with the knitted element, wherein the knitted element includes a medial auxetic portion positioned on a medial side of the upper and a lateral auxetic portion positioned on a lateral side of the upper, wherein each of the inner auxetic portion and the outer auxetic portion is configured to change area in response to stretching of the knitted component by the tensile strand, and wherein the tensile strands include a first tensile strand extending through and engaging the inner auxetic portion and a second tensile strand extending through and engaging the outer auxetic portion, wherein the first tensile strand and the second tensile strand are each configured to be manipulated to selectively vary an area of the inner auxetic portion and the outer auxetic portion, respectively, to vary stretch properties of the knitted component.

26. The upper of claim 25, wherein the first tensile strand and the second tensile strand each include a first end, a second end, and an intermediate segment extending between the first end and the second end; wherein a first section of the intermediate segment extends through the knit element and engages the auxetic portion; wherein a second section of the intermediate section is exposed from the knitted element; and wherein the second segment of the first tensile strand and the second segment of the second tensile strand are each configured to be manipulated to selectively vary an area in the medial auxetic portion and the lateral auxetic portion, respectively; wherein the second segment of the first tensile strand and the second segment of the second tensile strand each define a loop that receives a fixation device to attach the fixation device to the upper.

27. The upper of claim 25, wherein the first tensile strand and the second tensile strand are each inlaid within at least one of a course and a wale of the knitted component.

28. The upper according to claim 25, wherein the medial auxetic portion has greater elasticity than a first knit area of the knit component, the first knit area surrounding the medial auxetic portion.

29. The upper according to claim 28, wherein the lateral auxetic portion has greater elasticity than a second knitted area of the knitted component, the second knitted area surrounding the lateral auxetic portion.

30. The upper according to claim 29, wherein an area of each of the medial and lateral auxetic portions changes as the first and second knit areas of the knit component are stretched.

31. The upper of claim 25, wherein the medial and lateral auxetic portions are each generally shaped as a concave triangle.

32. An upper for an article of footwear, comprising: A knitted component formed of unitary knitted construction, the knitted component configured to stretch, the knitted component comprising: Auxetic portion of knitted; a knitted region surrounding the knitted auxetic portion, wherein said knitted auxetic portion has an elasticity greater than that of said knitted region; and and at least one tensile strand extending through the knitted auxetic portion, and wherein the at least one tensile strand is inlaid through the knitted region, the tensile strand being formed of unitary knit construction with the knitted auxetic portion and the knitted region, wherein the tensile strand is configured to be manipulated to selectively vary an area of the knitted auxetic portion to alter stretch properties of the knitted component.

33. The upper of claim 32, wherein the knitted auxetic portion comprises concave triangles.

34. A knit component formed of unitary knit construction, the knit component configured to stretch, the knit component comprising: a knit element comprising an auxetic portion configured to move between a first position and a second position as the knit component stretches, and a tensile strand extending through and engaging the auxetic portion such that the tensile strand controls stretch of the auxetic portion, the tensile strand being formed of unitary knit construction with the knit element, wherein the tensile strand is configured to be manipulated to selectively vary an area of the auxetic portion to alter stretch properties of the knitted component, wherein the tensile strand is detachably secured to the knitted element by a securing device, and wherein the securing device is spaced apart from the auxetic portion.

35. The knitted component according to claim 34, wherein the securing device comprises at least one of a clip, a tie, a spool, and a removable knot formed in the tensile strand.

36. The knitted component of claim 34, wherein the knitted component is used in an article of apparel and the securing device is positioned proximate a cuff of the article of apparel.

37. The knitted component according to claim 34, wherein the fixation device is detachable from the tensile strand, and wherein the tensile strand is movable relative to the fixation device when the fixation device is in a detached state.

38. The knitted component of claim 34, wherein the tensile strand is engaged with the knitted element at a location proximate a boundary of the auxetic portion, the tensile strand having a longitudinal axis, and wherein the tensile strand is configured to slide relative to the location along the longitudinal axis of the tensile strand and remain engaged with the knitted element at the location.

39. The knitted component according to claim 34, wherein the auxetic portion has greater elasticity than adjacent knit areas of the knitted element.

40. The knit component according to claim 34, wherein the auxetic portion is generally shaped as a concave triangle.

41. A knit component formed of unitary knit construction, the knit component configured to stretch, the knit component comprising: a knit element comprising an auxetic portion configured to move between a first position and a second position as the knit component stretches, and a tensile strand extending through and engaging the auxetic portion such that the tensile strand controls stretch of the auxetic portion, the tensile strand being formed of unitary knit construction with the knit element, wherein the tensile strand is configured to be manipulated to selectively vary an area of the auxetic portion to alter stretch properties of the knitted component, The tensile strand is detachably fixed to the knitted element by a fixing device.

42. The knitted component of claim 41, wherein the securing device comprises at least one of a clip, a tie, a spool, and a removable knot formed in the tensile strand.

43. The knit component according to claim 41, wherein the tensile strand extends through a second auxetic portion.

44. The knitted component according to claim 41, wherein the fixation device is detachable from the tensile strand, and wherein the tensile strand is movable relative to the fixation device when the fixation device is in a detached state.

45. The knitted component of claim 41 , wherein the tensile strand is engaged with the knitted element at a location proximate a boundary of the auxetic portion, the tensile strand having a longitudinal axis, and wherein the tensile strand is configured to slide relative to the location along the longitudinal axis of the tensile strand and remain engaged with the knitted element at the location.

46. The knitted component of claim 41, wherein the auxetic portion has greater elasticity than adjacent knit areas of the knitted element.

47. The knitted component according to claim 41, wherein the auxetic portion is generally shaped as a concave triangle.

48. A method for forming a knitted component, comprising: forming the knitted component on a knitting machine, wherein the knitted component is formed of unitary knitted construction and is configured to stretch, and the knitted component comprises: a knit element having an auxetic portion configured to move between a first position and a second position as the knit component stretches, and a tensile strand extending through and engaging the auxetic portion such that the tensile strand controls stretch of the auxetic portion, the tensile strand being formed of unitary knit construction with the knit element, wherein the tensile strand is configured to be manipulated to selectively vary an area of the auxetic portion to alter stretch properties of the knit component; and A fixing device is provided so that the tensile strand is detachably fixed to the knitted element by means of the fixing device.

49. The method of claim 48, wherein the securing device comprises at least one of a clip, a tie, a spool, and a removable knot formed in the tensile strand.

50. The method of claim 48, wherein the tensile strand extends through a second auxetic portion.

51. The method of claim 48, wherein the securement device is detachable from the tensile strand, and wherein the tensile strand is movable relative to the securement device when the securement device is in the detached state.

52. An article of footwear, wherein the article of footwear comprises a sole structure and an upper attached to the sole structure, the upper comprising the knitted component according to any one of claims 1-2, 4-14, 34-35, and 37-47.

53. An article comprising a knitted component, the knitted component being the knitted component according to any one of claims 1-14 and 34-47.

54. An article of apparel, wherein the article of apparel comprises a knitted component according to any one of claims 1-14 and 34-47.

55. The article of apparel according to claim 54, wherein the article of apparel is a shirt, jersey, or other article configured to be worn on the torso and / or arms of a wearer.

56. A knit component formed of unitary knit construction, the knit component configured to stretch, the knit component comprising: a knit element comprising an auxetic portion configured to move between a first position and a second position as the knit component stretches, the knit element being formed from at least one yarn, cable, filament, or fiber manipulated to form a plurality of interlaced loops; and a tensile strand that alternates between being positioned: (a) behind the loop; and (b) in front of the loop, the knit element and the tensile strand together being formed of unitary knit construction, the tensile strand being engaged with the knit element proximate the auxetic portion, wherein the tensile strand is configured to be manipulated for selectively varying an area of the auxetic portion to alter the stretch properties of the knitted component.

57. The knitted component of claim 56, wherein the plurality of staggered loops are staggered in a plurality of wales extending along the first direction and in a plurality of courses extending along the second direction.

58. The knitted component of claim 57, wherein at least a portion of the tensile strand is inlaid into one or more courses and / or wales of the knitted elements.

59. The knitted component of claim 56, wherein the tensile strand is disposed within the knitted element between a front face and a back face of the knitted component.

60. The knitted component of claim 57, wherein the tensile strands are framed within a single course and extend in the second direction; or wherein the tensile strands are framed within a single wale and extend in the first direction.

61. The knitted component according to claim 57, wherein different sections of the tensile strand extend along different courses of the knitted elements; or wherein different sections of the tensile strand extend along different wales of the knitted elements.

62. The knitted component of claim 57, wherein the tensile strand extends through the knitted element along the first direction and the second direction.

63. The knitted component of claim 57, wherein the knitted elements are formed from a plurality of yarns that cooperate to define common loops, common courses, and / or common wales.

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