Footwear

Abstract

The sole structure for footwear includes a midsole and a reinforcing member. The reinforcing member can include a first end and a second end. The first end is disposed along a bottom surface of the midsole. A first sub-portion of the first end extends along a first side of the midsole and a second sub-portion of the first end extends across the bottom surface from the first side of the midsole to a second side of the midsole. A second portion extends upward from the first portion to the second side of the midsole, wraps around at least a portion of a heel region of the midsole, and extends to the first side of the midsole.

Description

Technical Field

[0001] The present disclosure generally relates to footwear having a stable structure, and more specifically, to footwear having an upper and sole structure including a midsole, an outsole, and a thermoplastic polyurethane (TPU) reinforcing member.

Background Art

[0002] Many conventional shoes and other footwear generally include an upper and a sole attached to the lower end of the upper. Conventional shoes further include an internal space (i.e., a gap or cavity) formed by the inner surfaces of the upper and the sole, which accommodates the user's foot before the shoe is secured to the foot. The sole is attached to the lower surface or boundary of the upper and is positioned between the upper and the ground. As a result, the sole typically provides stability and cushioning to the user while wearing the shoe. In some cases, the sole may include multiple components such as an outsole, a midsole, and an insole. The outsole may provide static friction to the bottom surface of the sole, and the midsole may be attached to the inner surface of the outsole and provide cushioning or additional stability to the sole. For example, the sole may include a foam or foam-like material that can enhance stability at one or more desired positions along the sole or reduce the stress and impact energy applied to the foot and leg when the user is running, walking, or performing other activities.

[0003] The upper generally extends upward from the sole and defines an internal cavity that completely or partially encloses the foot. In most cases, the upper extends across the instep and toe areas, and crosses over them on both the inside and outside. Many footwear may include a tongue that extends across the instep area and fills the gap between the inner and outer edges of the upper, defining an opening to the cavity. The tongue may be positioned between the inner and outer edges of the upper, below the lacing system, to allow adjustment of the tightness of the shoe. The tongue may also be manipulable by the user to allow the foot to enter and exit the internal space or cavity. Furthermore, the lacing system may allow the user to adjust specific dimensions of the upper or sole, thereby adapting the upper to various foot types with varying sizes and shapes.

[0004] The upper may be composed of a wide variety of materials selected based on one or more uses of the shoe. The upper may also include parts containing different materials specific to certain areas of the upper. For example, it may be desirable to add stability to areas adjacent to the forefoot or heel area of ​​the upper to provide greater resistance or rigidity. In contrast, other parts of the shoe may include soft fabrics to have properties such as anti-stretch, flexibility, breathability, or moisture-wicking properties.

[0005] The sole assembly generally extends between the ground and the upper. In some examples, the sole assembly includes an outsole that provides abrasion resistance and static friction with the ground. The outsole may be formed from rubber or other materials that provide durability and abrasion resistance and increase static friction with the ground.

[0006] While many shoes currently on the market possess various features related to the characteristics mentioned above, many athletic shoes, and even running shoes, lack additional support structures in their soles that help provide stability when running or engaging in strenuous exercise. This can be particularly problematic for people who suffer from pronation and supination, which result in the foot rotating inward and outward, respectively, during normal foot movement. Such pronation and supination can lead to injuries if left untreated. [Overview of the Initiative] [Problems that the invention aims to solve]

[0007] Therefore, footwear is desired that has features that contribute to stability along both the upper and sole structures. These and other deficiencies of the prior art are addressed by the following disclosure. [Means for solving the problem]

[0008] Many of the advantages of the footwear described herein will be obvious to those skilled in the art. For example, the various components that make up the sole structure, in particular the elongated reinforcing members, add various athletic advantages to the shoe, such as increased rigidity and support for pronation and supination.

[0009] According to one aspect of the present disclosure, a sole structure for footwear may include a midsole and a reinforcing member. The midsole may have a first side and a second side extending between an upper surface and a bottom surface. The reinforcing member may include a first end and a second end. The first end may be positioned along the bottom surface of the midsole and may include a first sub-portion and a second sub-portion. The first sub-portion may extend along the first side of the midsole, and the second sub-portion may extend from the first side of the midsole to the second side of the midsole, intersecting (diagonally) with the bottom surface. The second end may extend upward from the first portion of the midsole to the second side, wrapping around at least a portion of the periphery of the heel region of the sole structure and extending to the first side of the midsole.

[0010] In some embodiments, the reinforcing member can be positioned at least partially on top of the midsole in the heel region. In some cases, the distal end of the second end can be positioned closer to the midfoot region of the midsole than to the heel end of the midsole.

[0011] In some embodiments, a first sub-portion of the reinforcing member can be positioned in the forefoot region of the midsole, and a second sub-portion of the reinforcing member can be positioned in the midfoot region of the midsole. In some cases, the second end can be positioned in both the midfoot and heel regions of the sole structure.

[0012] In some embodiments, the inner surface of the first end of the reinforcing member is bonded to the midsole, and the outer surface of the first end of the reinforcing member can form at least a portion of the ground engagement surface of the sole structure. In some cases, the first end can be at least partially positioned within a channel formed in the midsole. In some cases, the sole structure may further include an outsole having a first outsole portion and a second outsole portion separated by the reinforcing member. The first and second outsole portions can form the remaining portion of the ground engagement surface of the sole structure. In some cases, the first end may include a first flange extending from a first edge of the first portion. The first flange can be fixed between the midsole and at least one of the first outsole portion or the second outsole portion. In some cases, the first end may further include a second flange extending from a second edge opposite the first portion. The second flange can be fixed between the midsole and the other of the first outsole portion or the second outsole portion.

[0013] In another aspect of the present disclosure, footwear may include an upper and a sole structure attached to the upper. The sole structure may extend across the forefoot, midfoot, and heel regions of the footwear. The sole structure may include a midsole, an outsole attached to the bottom surface of the midsole, and a reinforcing member. The reinforcing member may extend traverse from a first distal end on the medial side of the forefoot region of the outsole to the lateral side of the midsole in the midfoot region, continue along the lateral side of the midsole from the midfoot region to the heel region, around the periphery of the heel region, and extend upward until it terminates at a second distal end in the medial midfoot region, wrapping around the periphery of the midsole.

[0014] In some embodiments, the reinforcing member can be bonded to at least one of the midsole or upper so as to wrap around the heel area. In some cases, the sole structure may further include an outsole bonded to the bottom surface of the midsole. The outsole may include a first outsole portion and a second outsole portion separated by the reinforcing member. The reinforcing member may include a flange fixed between the outsole and the midsole. Together, the outsole and the first end of the reinforcing member can form a ground engagement surface of the footwear.

[0015] In some embodiments, the outer surface of the reinforcing member may include a plurality of substantially parallel ridges extending along the length of the reinforcing member from a first distal end to a second distal end. In some cases, the first distal end of the reinforcing member may be coupled to at least one of the medial side of the midsole or the upper in the forefoot region. In some cases, the reinforcing member may be at least partially positioned within a channel formed in the midsole.

[0016] According to yet another aspect of the present disclosure, footwear may include an upper and a sole structure attached to the upper. The sole structure may extend over the forefoot, midfoot, and heel regions of the footwear. The sole structure may include a midsole and a reinforcing member which may include a first end and a second end. The first end may include a first sub-portion positioned along the bottom surface of the midsole and extending along the medial side of the midsole in the forefoot region, and a second sub-portion extending from the medial side to the lateral side of the midsole in the midfoot region, intersecting the bottom surface. The second end may extend upward from the first portion to the lateral side of the midsole in the midfoot region. The second end may continue to extend posteriorly along the lateral side of the midsole and may wrap around the heel end of the midsole and extend to the medial side of the midsole.

[0017] In some embodiments, the reinforcing member can be bonded to the midsole and the upper, respectively, in at least one of the forefoot region or the heel region.

[0018] Other embodiments of the footwear described herein, including their features and advantages, will become apparent to those skilled in the art upon examination of the drawings and detailed description herein. Therefore, all such embodiments of the footwear are intended to be included in the detailed description and this summary. [Brief explanation of the drawing]

[0019] [Figure 1] Figure 1 is a side view of a footwear device including the upper and sole structure disclosed herein. [Figure 2] Figure 2 is an internal side view of the footwear shown in Figure 1. [Figure 3] Figure 3 is a bottom view of the footwear shown in Figure 1. [Figure 4] Figure 4 is a side view of another example of footwear similar to that shown in Figure 1. [Figure 5] Figure 5 is an internal side view of the footwear shown in Figure 4. [Figure 6]FIG. 6 is a top view of yet another footwear similar to the footwear of FIG. 1. [Figure 7] FIG. 7 is a bottom side isometric view of the footwear of FIG. 6. [Figure 8] FIG. 8 is an inner bottom isometric view of another footwear similar to the footwear of FIG. 1. [Figure 9] FIG. 9 is an inner bottom isometric view of yet another footwear similar to the footwear of FIG. 1. [Figure 10] FIG. 10 is a bottom view of another embodiment of the sole structure according to an aspect of the present disclosure. [Figure 11] FIG. 11 is a side view of the sole structure of FIG. 10. [Figure 12] FIG. 12 is an inner side view of the sole structure of FIG. 10. [Figure 13] FIG. 13 is a cross-sectional view of the sole structure taken along line A-A of FIG. 10. [Figure 14] FIG. 14 is a side view of another example of a footwear similar to the footwear of FIG. 1.

MODE FOR CARRYING OUT THE INVENTION

[0020] CROSS-REFERENCE TO RELATED APPLICATIONS This application claims the benefit and priority of U.S. Provisional Application No. 63 / 235,353, titled "Footwear," filed on August 20, 2021, which is hereby incorporated by reference in its entirety.

[0021] REFERENCE TO FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT NOT APPLICABLE

[0022] SEQUENCE LISTING NOT APPLICABLE

[0023] The following description and accompanying diagrams disclose various embodiments or configurations of shoes having an upper and sole structure. While the embodiments are disclosed with reference to sports shoes such as running shoes, tennis shoes, and basketball shoes, the concepts relating to the embodiments of shoes may also apply to a wide range of footwear and foot styles, such as basketball shoes, cross-training shoes, football shoes, golf shoes, hiking shoes, hiking boots, ski and snowboard boots, soccer shoes and cleats, walking shoes, and track cleats. The concept of shoes may also apply to footwear considered non-athletic, such as dress shoes, sandals, loafers, slippers, and heels.

[0024] As used herein, the term “about” refers to variations in numerical values ​​that may arise, for example, from common measurement and manufacturing procedures used in footwear or other manufactured products, which may include embodiments of the disclosure herein, from careless errors in these procedures, from differences in the manufacture, source, or purity of components used in the manufacture of a composition or mixture or in the execution of a method. Throughout the disclosure, the terms “about” and “approximately” refer to values ​​within ±5% of the numerical value preceding the term.

[0025] Furthermore, as used herein, "or" refers to a non-exclusive list of configurations or operations that can exist in various combinations, rather than an exclusive list of configurations that can only exist as substitutes for each other, unless otherwise restricted or defined. For example, the list "A, B, or C" indicates the options of A, B, C, A and B, A and C, B and C, and A, B, and C. Similarly, the term "or" as used herein is intended to indicate exclusive choices only when preceded by terms indicating exclusivity, such as "either," "one of the two," "only one," or "only one." For example, the list "one of A, B, or C" indicates the options of A but not B and C, B but not A and C, and C but not A and B. A list preceded by "one or more" (and its variations) and containing "or" to separate the listed elements indicates one or more choices of any or all of the listed elements. For example, the phrases "one or more of A, B, or C" and "at least one of A, B, or C" indicate one or more A, one or more B, one or more C, one or more A and one or more B, one or more B and one or more C, one or more A and one or more C, and one or more A, one or more B, and one or more C. Similarly, lists beginning with "multiple" (and variations thereof) and containing "or" to separate the listed elements indicate options in which any or all of the listed elements appear multiple times. For example, the phrases "multiple of A, B, or C" and "two or more of A, B, or C" indicate options in which A and B, B and C, A and C, and A, B, and C.

[0026] Furthermore, as used herein, unless otherwise defined or limited, directional terms are used for convenience when referring to descriptions of specific figures or examples. For example, references to “downward” or other directions, or to “lower” or other positions, may be used to describe aspects of specific examples or figures, and not all installations or configurations necessarily require the same direction or shape.

[0027] In this specification, terms such as "first," "second," and "third" may be used to describe various elements, components, regions, layers, and / or parts. These elements, components, regions, layers, and / or parts should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or part from another region, layer, or part. Terms such as "first," "second," and other numerical terms do not imply order or sequence unless explicitly indicated by the context. Thus, the first element, component, region, layer, or part described below may be referred to as the second element, component, region, layer, or part without deviating from the teaching of the exemplary configuration.

[0028] This disclosure relates to footwear, or specific components of footwear such as uppers, soles, or sole structures. Uppers may consist of knitted materials, woven fabrics, nonwoven fabrics, leather, mesh, suede, or a combination of one or more of the aforementioned materials. Knitted materials may be made by knitting yarn, woven fabrics by weaving yarn, and nonwoven fabrics may be made by manufacturing a one-piece nonwoven web. Knitted fabrics include woven fabrics formed by warp knitting, weft knitting, plain knitting, circular knitting, or other suitable knitting operations. Knitted fabrics may have, for example, plain knit structures, mesh knit structures, rib knit structures, etc. Woven fabrics include, but are not limited to, woven fabrics formed by any of a number of weaving methods such as plain weave, twill weave, satin weave, dobbin weave, jacquard weave, double weave, or double cloth weave. Nonwoven fabrics include, for example, woven fabrics made by airlaid or spunlaid methods. The upper may be composed of various materials such as a first thread, a second thread, or a third thread, and may have various properties or various visual features.

[0029] Furthermore, this disclosure relates to footwear having a sole structure attached to an upper. The sole structure may include a midsole, an outsole, and reinforcing members. The midsole, outsole, and reinforcing members may each be separate components joined together, or one or more of these elements may be integrally formed with each other. The midsole may be made of foam material and is positioned between the upper and the outsole, connecting the upper and the outsole. The midsole may cushion the impact when the user's foot contacts the ground. The outsole may be attached to the midsole and define the bottom surface of the shoe. The outsole may be made of rubber material and is configured to exert static friction in contact with the ground. The outsole may include one or more parts, such as a heel portion and a forefoot portion, but the outsole may include two or more parts in different areas, or it may be a single configuration. The reinforcing members may be made of hard plastic such as TPU, or other types of plastic or composite materials, and are provided to enhance support for the user's foot and guide the foot while walking. In particular, the reinforcing material wraps around the midsole and has parts on both the inside and outside of the footwear, which can help prevent the user's foot from rotating due to pronation and supination.

[0030] The reinforcing member is an elongated member that is bonded to the midsole and wraps around the midsole. The reinforcing member has an inner surface facing the footwear and is configured to bond to the midsole, and further, if the sole structure connects to the upper, is configured to bond to at least a portion of the upper. The reinforcing member also has an outer surface, which in some embodiments may be smooth, undulating, or have other features such as ribs. The reinforcing member may be curved to match adjacent portions of the midsole and / or upper. Such features can be used to adjust the flexibility of the reinforcing member, making it stiffer in a certain direction, such as in a certain portion or along the length of the reinforcing member, and can enhance the decorative aspect of the reinforcing member. Furthermore, the reinforcing member may generally have smooth and curved, wavy, zigzag, or other wavy edges. Some portions of the reinforcing member, for example, portions adjacent to the bottom surface, may have one or more flanges extending from there. The flanges may be positioned between the midsole and the outsole to help secure the reinforcing member to the sole structure.

[0031] As described above, the reinforcing member wraps around the midsole. In particular, the reinforcing member may define a first distal end in the forefoot region near the medial side. The first distal end may be positioned adjacent to the bottom surface of the sole structure, or it may partially extend to the side of the midsole or upper. The reinforcing member may extend posteriorly along the bottom surface of the sole structure near the medial side, or it may cross over to the lateral side. Upon reaching the lateral side, the reinforcing member wraps upward and posteriorly along the outside of the midsole, toward the heel region. In the heel region, the reinforcing member may extend above the midsole and connect to the upper. The reinforcing member may wrap around the heel region from the lateral to the medial side, extend forward, and terminate at a second distal end adjacent to the midfoot region. In the heel region, the reinforcing member may be configured to connect to both the midsole and the upper for at least a portion of its length.

[0032] Figures 1 to 3 show a first exemplary embodiment of footwear 100, including an upper 102 and a sole structure 104. As will be described in more detail below, the upper 102 is attached to the sole structure 104 and together with the sole structure 104 defines an internal cavity 106 into which the user's foot can be inserted. The upper 102 may also include an insole (not shown) placed within the internal cavity 106, which may be connected to the inner surface (not shown) of the footwear 100. When the shoe is worn, the inner surface may be in direct contact with the user's foot. The sole structure 104 includes a midsole 108, an outsole 110 defining the bottom surface 112 of the footwear 100 (e.g., a ground engagement surface), and a reinforcing member 114. In some embodiments, an outsole may not be included, and the bottom of the midsole may define the ground engagement surface.

[0033] For reference, footwear 100 also defines the outer side 116 (i.e., the first side of footwear 100, see Figure 1) and the inner side 118 (i.e., the second side of footwear 100, see Figure 2). For reference, footwear 100 defines a cross section 120 extending from the toe tip 122 located at the distal end of the forefoot region 126 to the heel tip 124 located at the distal end of the heel portion opposite the toe tip 122 (see Figure 3). The cross section 120, along with the central portion of footwear 100, defines the outer side 116 extending from one side of the cross section 120 and the inner side 118 extending from the other side. In other words, the sides of the outer side 116 and the inner side 118 are adjacent to each other along the cross section 120. In particular, the outer side 116 corresponds to the outer part of the footwear 100 with respect to the user's foot, and the inner side 118 corresponds to the inner part of the footwear 100. Thus, the left and right sides of the footwear have opposing outer 116 and inner 118 sides, with the inner 118 being closest to each other when the user is wearing the footwear 100, and the outer 116 being defined as the side furthest from each other when worn.

[0034] Referring to Figure 3, the footwear 100 also defines a forefoot region 126, a midfoot region 130, and a heel region 134, which are shown separated by dashed lines intersecting the cross-section 120. The forefoot region 126 generally corresponds to the portion of the footwear 100 that encloses the toes, the ball of the foot, and the joints connecting the metatarsals to the toes or phalanges. The midfoot region 130 is adjacent to the forefoot region 126 and generally corresponds to the portion of the footwear 100 that encloses the arch of the foot along the foot joint. The heel region 134 is adjacent to the midfoot region 130 and generally corresponds to the portion of the footwear 100 that encloses the posterior part of the foot, including the heel or calcaneus, ankle, or Achilles tendon.

[0035] Continuing to refer to Figure 3, the forefoot region 126, midfoot region 130, heel region 134, medial 118, and lateral 116 are intended to define boundaries or regions of the footwear 100 and extend collectively along the entire length of the footwear 100 from the toe 122 to the heel 124. It should be understood that aspects of this disclosure may refer to portions or elements having the same extension as one or more of the forefoot region 126, midfoot region 130, heel region 134, medial 118, or lateral 116. The forefoot region 126 extends from the toe 122 to the widest part 137a of the footwear 100 (i.e., the distance between the medial 118 and lateral 116 of the sole structure 104). The midfoot region 130 extends from the widest part 137a to the thinnest part 137b of the footwear 100 (i.e., the distance between the inner 118 and outer 116 of the sole structure 104). The heel region 134 extends from the thinnest part 137b to the heel end 124 of the footwear 100.

[0036] Referring to Figures 1 and 3, the lateral portion 116 begins where the toe tip 122 intersects the cross section 120 and curves outward (i.e., away from the cross section 120) along the forefoot region 126 toward the midfoot region 130. At its widest point 137a, the lateral portion 116 curves inward (i.e., toward the cross section 120) toward the thinnest point 137b and enters the midfoot region 130. Upon reaching the thinnest point 137b, the lateral portion 116 curves outward and extends toward the heel region 134. Next, the lateral portion 116 curves inward toward the heel end 124 and terminates where the heel end 124 intersects the cross section 120.

[0037] Referring to Figures 2 and 3, the medial portion 118 begins where the toe tip 122 intersects the cross section 120 and curves outward (i.e., away from the cross section 120) along the forefoot region 126 toward the midfoot region 130. At its widest point 137a, the medial portion 118 curves inward (i.e., toward the cross section 120) toward the thinnest point 137b and enters the midfoot region 130. Upon reaching the thinnest point 137b, the medial portion 118 curves outward and extends toward the heel region 134. Next, the medial portion 118 curves inward toward the heel end 124 and terminates where the heel end 124 intersects the cross section 120.

[0038] In light of the foregoing description, it should be understood that numerous modifications are apparent to those skilled in the art, and that the individual components may be incorporated into numerous footwears. Accordingly, the embodiments of the footwear 100 and its components may be described by reference to a general area or part of the footwear 100, and it should be understood that the boundaries of the forefoot area 126, midfoot area 130, heel area 134, outer 116, and / or inner 118 described herein may differ from footwear to footwear. Furthermore, the embodiments of the footwear 100 and its individual components may also be described by reference to a precise area or part of the footwear 100, and the scope of the claims appended herein may incorporate limitations relating to these boundaries of the forefoot area 126, midfoot area 130, heel area 134, outer 116, and / or inner 118 described herein.

[0039] As shown in Figures 1 and 2, the upper 102 is positioned above the sole structure 104 and is coupled to the sole structure 104. The upper 102 is made from a single mesh material that extends along the entire sides of the inner 118 and outer 116, including the upper part of the forefoot area 126 and around the heel area 134. Although the upper 102 is illustrated and described as a single piece, the upper 102 may be formed from other materials or structures. For example, many conventional uppers are made from multiple elements (textiles, polymer foams, polymer sheets, leather, synthetic leather, etc.) bonded together by seams or stitching. In various embodiments, the knitted material may incorporate different types of yarn that can provide the upper with different properties. In some embodiments, the upper may incorporate multiple layers of different materials, each with different properties, such as improved breathability or moisture wicking.

[0040] Continuing to refer to Figures 1 and 2, several other features may be attached to or combined with the upper 102 to provide or enhance certain characteristics of the upper 102. For example, a tongue 138 is shown attached to the upper 102. The tongue 138 includes a lining and foam pad (not shown) for added comfort. However, in some embodiments, the tongue 138 does not have to be a separate part and may be integrated with the upper 102. Furthermore, the upper 102 also includes a tension adjustment system 140 that allows the user to adjust the upper 102 to fit the user's foot. As shown in Figures 1 and 2, the tension adjustment system 140 includes laces 142 that extend into the midfoot 130 and forefoot 126 regions of the upper 102. Furthermore, the upper 102 is provided with holes or other structures (not shown) that allow the laces 142 to be tightened. The TPU skin 144 may stretch the tension adjustment system 140 and provide high structural integrity to the upper 102 at various stress points. In a further embodiment, the tension adjustment system 140 may be another laceless fastening system known in the art.

[0041] Continuing to refer to Figures 1 and 2, the TPU skin 144 is applied to the outer surface of the upper. The TPU skin 144 may extend to any location along the upper 102, including the heel 134, midfoot 130, and forefoot 126 areas. The TPU skin 144 may consist of multiple different parts and may be included in both the outer 116 and inner 118 of the upper. For example, in this embodiment, each of the outer 116 and inner 118 of the upper 102 contains two parts of the TPU skin 144. The TPU skin 144 can help support the user's foot by giving the upper 102 different properties, such as areas of low flexibility or areas of low stretchability. Furthermore, the TPU skin 144 may be applied to areas of the upper 102 that are subjected to significant stress and friction from other components, for example, the area near where the shoelaces 142 are attached to the upper 102.

[0042] The TPU skin 144 may be a single TPU piece or multiple TPU pieces. For example, as best shown in Figure 1, the outer surface 116 of the upper 102 includes a first TPU skin portion 144A and a second TPU skin portion 144B. The first TPU skin portion 144A has an inverted V shape that extends along the outer surface 116 of the upper 102. More specifically, the first TPU portion 144A has a first arm 146A that extends diagonally along the tongue 138 and receives part of the shoelace 142, and a second arm 146B that extends diagonally downward and backward toward the sole structure 104 (i.e., the part where the upper 102 and the midsole 108 are joined) and the heel end 124, away from the tongue 138. The second TPU portion 144B is circular and positioned in front of the first TPU portion 146A, and accommodates the remaining portion of the outer shoelace 142 116.

[0043] Similarly, as best shown in Figure 2, the inner surface 118 of the upper 102 includes a third TPU skin portion 144C and a fourth TPU skin portion 144D. The third TPU skin portion 144C is similar to the second arm 146B of the first TPU skin portion 144A and extends diagonally downward and backward toward the sole structure 104 (i.e., the portion where the upper 102 and the midsole 108 are joined) and the heel end 124, away from the tongue 138. The third TPU skin portion 144C accommodates a portion of the shoelace 142 on the inner surface 118 of the upper 102. The fourth TPU skin portion 144D has a V-shape with a first arm 146C and a second arm 146D. The first arm 146C of the fourth TPU skin portion 144D extends downward and backward from the tongue 138 toward the sole structure 104 (i.e., the portion where the upper 102 and midsole 108 are joined) and the heel area 134. The second arm 146D of the fourth TPU skin portion 144D is curved and extends generally forward toward the toe 122. Each of the first arm 146C and the second arm 146D of the fourth TPU skin portion 144D accommodates a portion of the inner shoelace 142 118.

[0044] Referring again to Figures 1 and 2, the upper 102 is connected to the sole structure 104. The sole structure 104 extends between the upper 102 and the ground and includes a midsole 108, an outsole 110, and a reinforcing member 114. The upper 102 and the midsole 108 may be joined by adhesive. Furthermore, the upper 102 is attached to the reinforcing member 114 in the heel region 134, also by adhesive. The sole structure 104 may also include one or more other components, including a last board, plate, or Stroller board (not shown). The midsole 108 is defined as the part of the sole structure 104 that extends between the upper 102 and the outsole 110 and connects them. The midsole 108 functions as a cushion to absorb the impact that occurs when the user's foot hits the ground and is thickened to enhance its cushioning function. For example, as shown in Figures 1 and 2, the midsole is thickened in the heel region 134 where the user's foot first hits the ground.

[0045] In this embodiment, the midsole 108 extends from the toe 122 to the heel 124, across the entire forefoot 126, midfoot 130, and heel 134 regions. The midsole 108 is made from a foam material such as TPU foam, EVA (ethylene vinyl acetate), or other thermoplastic polymer materials such as thermoplastic polyurethane, polyolefin elastomer, ethylene vinyl acetate, or mixtures thereof. In some embodiments, the midsole 108 or a portion of the midsole 108 may contain beads or pellets containing particulate foam such as eTPU or eTPE-E. Furthermore, the midsole 108 may be a double-density foam or a multi-density foam.

[0046] As best illustrated in Figure 3, the midsole 108 of this embodiment is a dual-density foam. In particular, the shock absorption capacity can be enhanced by providing a first midsole member 148 containing soft EVA foam at least in the heel region 134. Conversely, a second midsole member 150 containing a denser, harder EVA foam can be provided at least in the forefoot region 126 to assist with toe-off or to provide high stability to the forefoot 126 and other areas of the sole structure 104, such as the midfoot 130 and heel 134 regions. However, the use of various types of foam, such as nitrogen-filled foam, is not limited to these regions. Rather, various foams can be included in any of the forefoot 126, midfoot 130, and heel 134 regions to achieve the desired cushioning characteristics. Furthermore, the various foams may be layered, or pockets or cavities of different types of materials may exist within the midsole 108.

[0047] In other embodiments, the midsole 108 may include various textures on its sides, thereby adding aesthetic elements to the footwear 100. For example, as shown in Figures 1 and 2, the midsole 108 has a laser-etched texture 152. The texture 152 is etched along the inner 118 and outer 116 of the midsole 108 and extends across the entire forefoot 126, midfoot 130, and heel 134 areas. The texture 152 can also add aesthetic appeal to the shoe. Alternatively, known methods such as UV (ultraviolet) printing can be used to create various textures and other decorative elements.

[0048] As shown in Figure 3, the outsole 110 connects to the midsole 108, is positioned beneath the midsole 108, and extends substantially across the underside of the midsole 108. The outsole 110 defines the bottom surface 112 of the sole structure and is configured to at least partially contact the ground. Furthermore, the outsole 110 enhances the structural integrity of the sole structure 104 and provides static friction to the user. As illustrated, the outsole 110 is formed from two parts separated by a reinforcing member 114, namely a first outsole portion 110a and a second portion 110b. Thus, the bottom surface 112 of the outsole 110 is discontinuous. Here, the first outsole portion 110a extends from the heel end 124 to the midfoot region 130, and the second outsole portion 110b extends from the toe end 122 to the midfoot region 130. However, the outsole 110 may be formed as a single, integrated unit or as any number of separate parts. The outsole 110 is integrally molded or co-molded with the midsole 108, but instead, the outsole 110 may be attached to the midsole 108 by adhesive or other adhesive. Furthermore, the outsole 110 is integrally molded or co-molded with the reinforcing member 114. In some embodiments, the outsole 110 may be attached to the reinforcing member 114 by adhesive or other adhesive, or it may not be attached to the reinforcing member 114 at all.

[0049] Continuing to refer to Figure 3, the sole structure 104 may include one or more recesses. As shown in Figure 3, a first recess 156 is provided in the heel region 134, and a second recess 158 is provided in the forefoot region 126. Recesses 156 and 158 extend through the outsole 110 to the midsole 108, so that the first and second midsole members 148 and 150 are visible from the bottom of the sole structure 104. Although the sole structure 104 is shown to have two recesses 156 and 158, in some embodiments more or fewer recesses may be provided. Furthermore, although this embodiment includes recesses 156 and 158 in the forefoot region 126 and the heel region 134, more or fewer recesses may be included anywhere within each of the forefoot region 126, midfoot region 130, and heel region 134. In this embodiment, the recesses 156 and 158 intersect the cross-section 120, but the recesses 156 and 158 may be offset outwards or inwards towards the 116 and 118.

[0050] Referring to Figures 1-3, the sole structure 104 includes grooves 160 (e.g., flexible grooves) along the bottom surface 112, thereby improving the flexibility of the sole structure 104 and enhancing static friction. The grooves 160 define gaps within the sole structure 104. In some embodiments, the grooves 160 may be replaced by other static friction structures such as ribs or treads. In this embodiment, the sole structure 104 is provided with a first groove set or internal groove set 160a and a second groove set or peripheral groove set 160b. As illustrated, all grooves in the first groove set 160a are shallower than all grooves in the second groove set 160b, but this is not always the case. In other words, the maximum depth of all grooves in the first groove set 160a is less than the maximum depth of all grooves in the second groove set 160b, and each depth is measured along a direction perpendicular to the bottom surface 112 in each groove of the first groove set 160a and the second groove set 160b. In some embodiments, the first groove set 160a may have a maximum depth greater than or equal to the maximum depth of the second groove set 160b. In some embodiments, only a portion of the grooves in the first groove set 160a may have a maximum depth that is shallower than or equal to the maximum depth of all grooves in the second groove set 160b.

[0051] Referring particularly to Figure 3, the grooves of the first groove set 160a are elongated recesses located within the outsole 110. Some of the grooves within the first groove set 160a are curved, and some of the grooves within the first groove set 160a are straight, but all of the grooves within the first groove set 160a extend at least partially into the outsole 110. In this embodiment, the grooves within the first groove set 160a are located entirely within the outsole 110, and each groove within the first groove set 160a does not extend to the outer circumference of the outsole 110, but is only visible from the bottom of the footwear 100.

[0052] Referring again to Figures 1 to 3, the grooves of the second groove set 160b are arranged along the perimeter of the outsole 110 and extend to the midsole 108. That is, each groove in the second groove set 160b has at least one open end located around the midsole 108, either along the inner 118 or the outer 116. The grooves in the second groove set 160b may be straight or curved. Furthermore, the grooves of the second groove set 160b have varying depths. In particular, the grooves of the second groove set 160b are deeper at the edges of the sole structure 104. In other words, the depth of the second groove set 160b increases along its length as it extends outward toward the respective outer 116 or inner 118. Furthermore, the outsole 110 has a plurality of fingers 166 extending between at least a portion of the second groove set 160b. To this end, at least a portion of the first groove set 160a can be aligned with at least a portion of the second groove set 160b, thereby allowing the first and second groove sets 160a and 160b to work together to form a row that extends generally laterally between the outer 116 and inner 118 of the sole structure. For example, in the heel region 134, the first and second groove sets 160a and 160b form a substantially arc-shaped row that is convex toward the heel end 124 of the footwear 100.

[0053] In some embodiments, the grooves of the second groove set 160b can be arranged such that the width of the finger 166 (e.g., the dimension between adjacent grooves) changes depending on the specific position of the finger 166 on the sole structure 104. For example, along the heel region 134, more specifically along the outer 116 of the heel region 134, the grooves of the second groove set 160b are angled relative to each other such that the width of the finger 166 narrows as it moves laterally outward toward the outer 116. Conversely, along the inner 118 of the midfoot region 130, the grooves of the second groove set 160b are angled relative to each other such that the width of the finger 166 widens as it moves laterally outward toward the inner 118. Furthermore, the finger 166 generally widens as it moves along the inner 118 from the midfoot region 130 to the heel region 134, and narrows (i.e., becomes narrower) as it moves along the outer 116 from the forefoot region 126 to the heel region 134.

[0054] Continuing to refer to Figures 1 to 3, the sole structure 104 also includes a reinforcing member 114. The reinforcing member 114 is an elongated member that wraps at least partially around the outsole 110 and midsole 108. As illustrated, the reinforcing member 114 is a carrier structure made from a thermoplastic material such as TPU. In some embodiments, the reinforcing member 114 is made from translucent TPU or another translucent material. Furthermore, the reinforcing member 114 is composed of two or more materials having different properties. For example, in some embodiments, the reinforcing member 114 comprises a portion made of TPU and another portion containing a composite material, which can be formed integrally or joined together.

[0055] The reinforcing member 114 helps guide the user's foot as it moves and provides support to the user's foot while it is in contact with the ground. In particular, the reinforcing member 114 helps prevent or reduce foot or ankle rolling specific to a user's particular walking style. This allows users who suffer from pronation or supination to achieve a more natural gait and reduce the likelihood of injury. For example, users who pronate or supinate during normal walking may be more prone to ankle, knee, or other injuries because these parts of the body need to compensate for the rotation of the foot. Supporting the foot can reduce the likelihood of injury. Furthermore, including the reinforcing member 114 enhances the visual appeal of the shoe and provides a strong visual element, allowing the user to see how the footwear is designed to provide support.

[0056] Referring further to Figures 1-3, the reinforcing member 114 is an elongated member that wraps around the midsole 108 and provides support to both the inner 118 and outer 116 of the sole structure 104. The reinforcing member 114 has an inner surface facing the footwear 100 (see, for example, inner surface 668 in Figure 13) and an outer surface 170 facing away from the footwear 100. In some embodiments, the reinforcing member 114 may be at least partially located within a channel formed in the midsole 108 (see, for example, channel 608a in Figure 13). The inner surface of the reinforcing member 114 is configured to connect to the bottom of the midsole 108 in the forefoot 126 and midfoot 130 regions, and to connect to the midsole 108 and upper 102 in the heel region 134. However, in some embodiments, the reinforcing member 114 may also connect to the sides of the midsole 108 or upper 102 in the forefoot 126 and midfoot 130 regions. With respect to the midsole 108, the reinforcing member 114 can be integrally molded with the midsole 108, or it can be bonded to the midsole 108 with an adhesive or other adhesive.

[0057] Referring particularly to Figure 3, the reinforcing member 114 includes one or more flanges 172, indicated by dashed lines, which are at least partially aligned with the length of the reinforcing member 114 and extend parallel to the length of the reinforcing member 114. As used herein, the length of the reinforcing member 114 is the dimension measured along the centerline 181 of the reinforcing member 114, extending from a first distal end 178 to a second distal end 180. The flanges 172 extend substantially perpendicularly from the edge of the reinforcing member 114. Accordingly, the flanges 172 can increase the local width of the reinforcing member 114 (e.g., a dimension substantially perpendicular to the length). The flanges 172 are positioned in the forefoot region 126 and the midfoot region 130, increasing the contact area between the midsole 108 and the inner surface of the reinforcing member 114, thereby ensuring a strong bond between them. By including the flanges 172, the outsole 110 can be bonded to the top of the flanges 172 or integrally molded on top of the flanges 172, providing an even stronger bond. In some embodiments, the outsole 110 and the reinforcing member 114 are either identical in thickness (e.g., dimensions along a direction perpendicular to the bottom surface 112 and substantially perpendicular to the length and width of the reinforcing member 114) or substantially corresponding to each other, so that the outsole 110 and the reinforcing member 114 form a flat or continuous bottom surface 112 of the sole structure 104. For example, the outsole 110 may protrude beyond the reinforcing member 114 by up to 10% of its thickness, and vice versa.

[0058] Returning to Figures 1-3, the reinforcing member 114 can have varying thickness along its entire length, resulting in some parts of the reinforcing member 114 being stiffer or more flexible than others. This allows the footwear 100 to have zones that enhance support while maintaining sufficient flexibility. Furthermore, the outer surface 170 of the reinforcing member 114 may be substantially flat, as shown in Figures 1-3, or it may have a contour, or it may have ribs or protrusions. In some embodiments, the contour, ribs, or protrusions may extend substantially along the entire length of the reinforcing member 114, or substantially perpendicular to the length of the reinforcing member 114. In some embodiments, the contour and / or ribs may be curved.

[0059] Continuing to refer to Figures 1 and 3, the reinforcing member 114 defines a first end or bottom 174 and a second end or top 176 connected at an angle or inflection point 175. As illustrated, the first end 174 crosses the bottom surface 112 roughly obliquely from the inside 118 to the outside 116. The second portion 176 extends upward from the first end 174 to the inflection point 175, wraps around the outside 116 of the midsole 108, wraps around at least a portion of the heel region 134, and returns to the inside 118. In some embodiments, the reinforcing member 114 is substantially mirrored around the cross section 120, with the first end 174 extending roughly obliquely across the bottom surface 112 from the outside 116 to the inside 118. Similarly, the second portion 176 can extend upward from the first end 174 at an inflection point 175, wrap around the inner side 118 of the midsole 108, wrap around at least a portion of the heel region 134, and return to the outer side 116. In either case, the reinforcing member 114 can extend upward from the midsole 108 in the heel region 134, thereby forming the highest part of the sole structure 104. Furthermore, the flexion point 175 is located in the midfoot region 130, but could also be located in either the forefoot region 126 or the heel region 134, thereby selectively enhancing support in those regions.

[0060] Continuing to refer to Figures 1 to 3, the first end 174 is associated with a portion of the reinforcing member 114 that starts at the toe 122 of the forefoot region 126 and extends substantially posteriorly along the bottom surface 112 from the medial 118 of the forefoot region 126 to the lateral 116 of the midfoot region 130. The second end 176 is associated with a portion of the reinforcing member 114 that extends upward in the midfoot region 130 along the lateral 116 of the midsole 108 and wraps around the heel region 134 to the medial 118. Thus, the second end 176 can be the heel portion of the reinforcing member 114. In some embodiments, the first end 174 extends posteriorly along the bottom surface 112 to the heel region 134, and the second end 176 extends posteriorly to the heel region 134, starting at the lateral 116 of the heel region 134. Alternatively, the first end 174 may extend posteriorly along the bottom surface 112 such that the second end 176 begins outside 116 of the forefoot region 126.

[0061] Referring to Figure 3, the reinforcing member 114 further defines the first distal end 178 of the first end 174. The first distal end 178 is positioned along the bottom surface 112 of the toe tip 122, near the medial side 118 of the forefoot region 126, and connects to the midsole 108. In some embodiments, the distal end 178 may connect to a portion of the midsole 108 and / or the side of the upper 102. From the first distal end 178, the first end 174 (e.g., the first sub-portion 174a) extends posteriorly along the medial side 118 of the forefoot region 126, roughly in the heel-to-toe direction, to the midfoot region 130. That is, the first sub-portion 174a extends from the toe tip 122 toward the midfoot region 130, in the toe-to-heel direction. In some cases, as the first end 174 approaches the metatarsal region 130, the first end 174 (e.g., the second sub-portion 174b) may begin to extend outward 116.

[0062] As a result, the stability of the medial 118 of the forefoot region 134 is improved, and the flexibility of the lateral 116 of the forefoot region 134 is improved, which helps to reduce or prevent pronation. The first end 174 then continues to extend from the medial 118 to the lateral 116 of the midfoot region 130. The first end 174 extends almost obliquely across the sole surface 112 from the medial forefoot portion of the midfoot region 130 to the lateral heel portion of the midfoot region 130. In other words, the first end 174 extends roughly toward the heel region 134 from the medial 118 to the lateral 116. It should be noted that the reinforcing member 114 includes both straight and curved portions and is considered to extend obliquely across the sole surface 112.

[0063] Although the first end 174 is shown to be positioned along or adjacent to the bottom surface 112, in some embodiments, at least a portion of the reinforcing member 114, particularly the distal end 178, may extend upward along the medial 118 of the forefoot region 126, so that the reinforcing member 114 extends to the sides of the midsole 108 and / or upper 102. Furthermore, since at least a portion of the first end 174 is positioned adjacent to the bottom surface 112, the reinforcing member 114 may also be in contact with the ground, similar to the outsole 110.

[0064] Returning to Figure 1, as the reinforcing member 114 extends upward from the bottom surface 112 of the outer 116 of the midfoot 130, the first end 174 becomes the second end 176, or transitions into the second end 176. The second end 176 continues to extend upward and backward along the outer 116 of the midsole 108 from the midfoot region 130 to the heel region 134. In the heel region 134, the second end 176 continues to extend upward and backward toward the outer 116 of the heel region 134, and the second end 176 is positioned on at least a portion of the upper part of the midsole 108 and connects to the upper 102. At the heel end 124, the reinforcing member 114 remains connected to the midsole 108. For example, as shown in Figure 1, the reinforcing member 114 may be connected only to the midsole 108 at its edge, or only along a small portion of the inner surface of the reinforcing member 114.

[0065] On the outer side 116, the reinforcing member 114 is connected to the midsole 108 so as to extend upward and backward from the bottom surface 112. Upon reaching the heel region 134, the reinforcing member 114 extends along the upper 102, primarily connecting to the upper 102, and moves backward toward the heel end 124. Although the reinforcing member 114 is primarily connected to the upper, the local lower end of the reinforcing member 114 remains connected to the upper end of the midsole 108. Subsequently, as it moves along the inner side 118, the reinforcing member 114 inclines downward, and as it moves toward the metafoot region 130, a larger portion of the reinforcing member 114 is connected to the midsole 108. For example, at the second distal end 180, approximately half of the width of the reinforcing member 114 is connected to the upper 102, and the remaining approximately half of the width of the reinforcing member 114 is connected to the midsole 108. Thus, the upper and lower ends each contain multiple inflection points and wavy configurations. In some embodiments, the reinforcing member 114 may be connected to only one of the upper 102 or the midsole 108 at the heel end 124. From there, the second end 176 continues along the perimeter of the heel region 134 and crosses the heel end 124 across the inside 118 of the heel region 134.

[0066] Returning to Figure 2, it is shown that the second end 176 extends generally forward from the heel end 124 and extends along the outer circumference of the heel region 134 to the midfoot region 130. The reinforcing member 114 terminates at the second distal end 180 of the second end 176 adjacent to the midfoot region 130. In other words, the reinforcing member 114 wraps around the medial 118 of the forefoot region 126 of the outsole 110 from the first distal end 178, crosses to the lateral 116 of the midfoot region 134, and then upward along the lateral 116 of the midsole 108 from the midfoot region 130 to the heel region 134, around the heel region 134, and wraps around to the second distal end 180 which terminates within the midfoot region 130 on the medial 118.

[0067] As shown in Figures 1 and 2, the reinforcing member 114 widens as it moves along the outer side 116 of the midsole 108 through the upper 104 to the heel end 124. Next, the reinforcing member 114 narrows along the inner side 118 toward the midfoot region 130, reaching its tip at the second distal end 180. Furthermore, as the reinforcing member 114 extends along the side of the midsole 108 toward the upper 102, it is shaped to conform to the contours of the midsole 108 and the upper 102. The reinforcing member 114 is located at the highest point on the upper 102 at the heel end 124 and can be inclined generally downward (i.e., toward the midsole 108) along the inner and outer sides 118, 116 so as not to hinder the user's ankle movement. Furthermore, the reinforcing member 114 can form a contour to match the portion of the upper 102 and midsole 108 to which the reinforcing member 114 is connected. As a result, the reinforcing member 114 can define a wavy outer and inner surface that can include various inflection points, such as near the heel end 124 or near the joint between the upper 102 and the sole structure 102 (e.g., the midsole 108).

[0068] In some embodiments, the reinforcing member 114 can terminate within the heel region 134 to increase mobility, which may be preferable in certain activities such as running where the user's ankle moves extensively. In some embodiments, the reinforcing member 114 may terminate in either the midfoot region 130 or the forefoot region 126 to increase support, which may be preferable in certain activities such as trail running or hiking. The reinforcing member 114 is connected to both the midsole 108 and the upper 102 so as to wrap around the heel region 134. The portion of the reinforcing member 114 that wraps around the heel region 134 extends on or along the upper 102, providing the user with additional stability and rigidity.

[0069] In some embodiments, the reinforcing member may be a mirror image of the reinforcing member 114, intersecting the cross-section 120. More specifically, the reinforcing member may wrap around the outer side of the forefoot region of the outsole from a first distal end, beyond the inner side of the midfoot region, and wrap upward along the inner side of the midsole from the midfoot region to the heel region, and wrap around the heel region to a second distal end that terminates in the inner side within the midfoot region. In such embodiments, the reinforcing member may provide excellent support on the outer side of the forefoot region and excellent flexibility on the inner side of the forefoot region, thereby potentially helping to reduce or prevent eversion. The reinforcing member may be connected to one or both of the upper and the midsole so as to wrap around the heel region.

[0070] Referring here to Figures 4 and 5, another exemplary embodiment of the footwear 200, including the upper 202 and the sole structure 204, is shown. The footwear 200 is similar to the previous embodiment, and similar elements are indicated by similar reference numbers under the "2xx" series reference numbers. The footwear 200 is similar to the previous embodiment in many aspects, but there are also several different aspects. In particular, the tongue 238 is integrated with the upper 202, and the upper 202 is configured to rise higher to the user's ankle to enhance support from the upper 202. Furthermore, the groove set 260 extends deeper to the midsole 208 on the outer 216 and inner 218 (i.e., to a depth along the direction perpendicular to the bottom surface 212 in each groove 260). The deeper grooves 260 further improve the static friction and flexibility of the sole structure 204. Furthermore, the reinforcing member 214 includes a rib 282 extending from a first end 274 to a second end 276. Rib 282 is also located at the second end 276 of the inner 218 of the heel region 234. Furthermore, reinforcing member 214 is partially positioned within a channel 208a formed in the midsole 208. By recessing reinforcing member 214 within channel 208a, reinforcing member 214 can be more securely attached to the midsole 208 along the portion of reinforcing member 214 that does not include the flange.

[0071] Referring here to Figures 6 and 7, yet another exemplary embodiment of the footwear 300, including the upper 302 and the sole structure 304, is shown. The footwear 300 is similar to the previous embodiment, and similar elements are indicated by similar reference numbers under the "3xx" series reference numbers. The footwear 300 is similar to the previous embodiment in many aspects, but there are also some different aspects. In particular, the upper 302 is a two-piece upper connected to the sole structure 304. Furthermore, the upper 302 has an integrated tongue 338 and does not include a tension adjustment system or a TPU skin. Referring to the sole structure 304, the outsole 310 defines the bottom surface 312 of the footwear 300 and integrates with the midsole 308. Neither the midsole 308 nor the outsole 310 has grooves. Rather, the outsole 310, including the first and second outsole portions 310a and 310b, is provided with a plurality of triangular protrusions 384 that run perpendicular to a cross-section 320 that extends through the footwear 300 from the toe tip 322 located at the distal end of the forefoot region 326 to the heel tip 324 located at the distal end of the heel region 334 opposite the toe tip 322. Furthermore, the sides of the midsole 308 are not etched with texture.

[0072] Continuing to refer to Figures 6 and 7, as in the previous embodiment, the reinforcing member 314 is wrapped around the midsole 308 and outsole 310 and embedded therein. That is, the reinforcing member 314 is at least partially located within a channel 308a provided in the midsole 308 and outsole 310 configured to accommodate the reinforcing member 314. The first end 374 of the reinforcing member 314 extends along the side surface of the midsole 308 and upper 302, with a first distal end 378 located on the inner side 318 of the forefoot region 326. Furthermore, the reinforcing member 314 is provided with a plurality of ridges 382 arranged across the entire outer surface 370 of the reinforcing member 314. Some of the ridges 382 are curved and / or concentric with one another, while the others are generally straight.

[0073] Referring here to Figure 8, another exemplary embodiment of footwear 400, including an upper 402 and a sole structure 404, is shown. Footwear 400 is similar to the previous embodiment, and similar elements are indicated by similar reference numbers under the "4xx" series reference numbers. The upper 402 is laceless, and the sole structure 404 is made of a plurality of inflatable thermoplastic beads molded together to form a single structure. In some embodiments, the thermoplastic beads may be molded together with a binder. Furthermore, a plurality of grooves 460 are located on the bottom surface 412 of the outsole 410 (for example, on each of the first and second outsole portions 410a, 410b). The grooves 460 extend through footwear 400 perpendicular to a longitudinal plane 420 that extends from the heel end 442 to the toe end 422. Furthermore, the sole structure 404 includes two elongated recesses, namely a first recess 456 and a second recess 458. The first recess 456 is located near the inner side 418 of the heel region 434 of the sole structure 404. The second recess 458 extends through the midfoot region 430 and the forefoot region 426 of the sole structure 404.

[0074] Continuing to refer to Figure 8, the sole structure 404 includes a reinforcing member 414, the first end 474 of which a portion (e.g., a first sub-portion 474a) extends upward to the medial 418 of the forefoot region 430 and connects to the upper 402, and the first distal end 478 is connected to the upper 402. The outer surface 470 of the reinforcing member is provided with a number of curved ribs 482. Some of the ribs 482 are located at the first end 474, and other ribs 482 extend from the first end 474 to the second end 476. For example, the ribs 482 include a first rib set 482a along the medial 418 of the first end 474. The ribs within the first rib set 482a are arranged in an elongated spiral and extend to the portion of the reinforcing member 414 connected to the medial 418 of the midsole 408. Furthermore, the ribs within the first rib set 482a extend along the outer 418 of the first end 474 to the second end 476. Similar to the first rib set 482a, the ribs within the second rib set 482b are also arranged in an elongated spiral. In some embodiments, the ribs 482 may be arranged in different shapes, such as concentric ellipses formed according to the contour of the reinforcing member 414.

[0075] Furthermore, the reinforcing member 414 (for example, the second sub-portion 474b of the first end 474) changes width along its length as it moves from the first distal end 478 to the second distal end 480. In particular, the reinforcing member 414 widens as it intersects diagonally along the bottom surface 412 from the outer 416 to the inner 418. Because the reinforcing member 414 is wider along the outer 416, it can provide increased support for users who supinate or rotate their foot outward 416. Furthermore, because the reinforcing member 414 remains wide throughout the entire second end 476, it can provide greater support in the heel area 434.

[0076] Referring here to Figure 9, another exemplary embodiment of footwear 500, including an upper 502 and a sole structure 504, is shown. Footwear 500 is similar to the previous embodiment, and similar elements are indicated by similar reference numbers under the "5xx" series reference numbers. While footwear 500 is similar to the previous embodiment in many aspects, there are also several different aspects. In particular, the upper 502 is a laceless upper, and the sole structure includes an outsole 510 with a plurality of curved grooves 560 in the forefoot region 526, the midfoot region 530, and the heel region 534. Thus, the curved grooves 560 are provided in the first and second outsole portions 510a and 510b, respectively. Furthermore, the reinforcing member 514 has a plurality of ribs 582 perpendicular to the length of the reinforcing member 514. That is, the ribs 582 are perpendicular to a midline 584 extending from a first distal end 578 to a second distal end 580. In some embodiments, the rib 582 may be perpendicular to the length of the footwear 500, or the rib 582 may be oriented in multiple directions.

[0077] Continuing to refer to Figure 9, the width of the reinforcing member 514 varies along its length. The first end 574 of the reinforcing member 514 (e.g., the first sub-portion 574a) extends from the first distal end 576 to the widest part 537a of the footwear 500, while extending near the medial side 518 of the forefoot region 526. Part of the reinforcing member 514 extends over the upper 502 of the forefoot region 526. Extending from the widest part 537a of the footwear 500, the first end 574 of the reinforcing member 514 (e.g., the second sub-portion 574b) curves toward the cross section 520 that extends through the footwear 500, intersecting the cross section 520 at the thinnest part 537b of the footwear 500. By doing so, the reinforcing member 514 also becomes thin to its thinnest point, which coincides with the thinnest point 537b of the footwear 500.

[0078] The reinforcing member 514 continues to extend along the bottom surface 512 of the footwear 500 to the outer side 516 of the heel region 534 near the heel end 524. At this position, the reinforcing member 514 curves upward at an inflection point 575 to a second end 576, wrapping around the heel region 534 to the second distal end 580 of the inner side 518 of the heel region 534. The reinforcing member 514 bends downward along the inner side 518 of the heel region 534, forming a U-shape that provides room around the user's ankle. By providing room around the user's ankle, the footwear 500 can increase or avoid restricting ankle mobility, which may be advantageous, for example, when running. Furthermore, providing room around the ankle may improve comfort. Furthermore, since the reinforcing member 514 curves upward toward the eyelet stay (not shown) and / or the tongue 538, the footwear 500 may provide improved support to reduce or prevent pronation.

[0079] Referring here to Figures 10-13, yet another exemplary sole structure 604 is shown. Sole structure 604 is similar to the previous sole structures, and similar elements are indicated by similar reference numbers under the "6xx" series reference numbers. Sole structure 604 has only a single recess 656 located in the heel region 634 of sole structure 604 (see Figures 10 and 13). The recess 656 extends through the outsole 610 to the midsole 608. Furthermore, the reinforcing member 614 has multiple parallel ridges 682 that extend along its length (see Figures 11-13). In this embodiment, there are five ridges 682, all of which are triangular in shape and extend parallel to the sides of the reinforcing member 614. That is, the ridges 682 form elongated pointed folds on the outer surface 670 of the reinforcing member 614 and extend along the length of the reinforcing member 614 from the first distal end 674 to the second distal end 676. However, in some embodiments, the number of raised portions 682 may be large or small, and the raised portions 682 may have different external shapes, such as round or square. In any case, the raised portions 682 help to increase static friction between the footwear 500 and the ground, while also increasing support.

[0080] Referring to Figure 13, a cross-sectional view of the sole structure 604 taken along line AA in Figure 10 is shown, with the upper 602 indicated by a dashed line. The sole structure 604 has a dual-density midsole 608, which includes a first midsole member 648 made of low-density EVA foam for enhanced cushioning and a second midsole member 650 made of high-density EVA foam for improved support and stability. The first and second midsole members 648 and 650 are integrally molded, but may also be formed as separate components connected by adhesive. The first midsole member 648 is positioned within the second midsole member 650, and each of the midsole members 648 and 650 extends across the forefoot region 626, the midfoot region 630, and the heel region 634. Furthermore, the second midsole member 650 has a hole 658 in the heel region 634 that coincides with a recess 656. The first midsole member 648 extends into the hole 658, and the first midsole member 648 is visible through the recess 656. Thus, the recess 656 extends through the outsole 610 to the first midsole member 648, and the first midsole member 648 defines the bottom of the recess 656.

[0081] Continuing to refer to Figure 13, the first end 674 of the reinforcing member 614 is embedded in the channel 608a of the midsole 608, and the first end 674 of the reinforcing member 614 is connected to the midsole 608 along the inner surface 668 of the reinforcing member 614. Furthermore, the flange 672 of the reinforcing member 614 is positioned along the outsole 610 (for example, along the first and second outsole portions 610a and 610b, respectively). Thus, the reinforcing member 614 is connected to the outsole 610 at its outer surface 670. Similarly, the flange 672 is positioned between the outsole 610 and the midsole 608.

[0082] In particular, referring to the heel region 634, the second end 676 of the reinforcing member 614 is connected to the midsole 608 at the lower end 690 of the reinforcing member 614. This allows a large portion of the inner surface 668 to be bonded to the upper part 602 or connected in other ways. In some embodiments, the reinforcing member 614 may be positioned above or below the midsole 608 within the heel region 634. If the reinforcing member 614 is positioned below the midsole 608, the reinforcing member 614 may be connected to the midsole 608 at a portion of the inner surface 668 of the reinforcing member 614.

[0083] Referring to Figure 14, yet another exemplary embodiment of footwear 700, including the upper 702 and sole structure 704, is shown. Footwear 700 is similar to the previous embodiment, and similar elements are indicated by similar reference numbers under the "7xx" series reference numbers. While footwear 700 is similar to the previous embodiment in many aspects, there are also several different aspects. In particular, the first midsole member 748 extends from the heel end 724 to the toe 722. The first midsole member 748 increases in height (i.e., in the direction extending perpendicularly from the bottom surface 710 of footwear 700 toward the upper 702) as it extends from the heel end 724 through the heel region 734 to the thickest midfoot region 730. The first midsole member 748 decreases in height as it continues from the forefoot region 726 toward the toe 722. The second midsole member 750 is mounted beneath the first midsole member 748 in the heel region 734 and has a wedge shape that complements the first midsole member 748, with its thickest portion located at the heel end 724. Both the first and second midsole members 748 and 750 have grooves 760 that extend upward from the bottom surface 712 of the footwear 700.

[0084] Continuing to refer to Figure 14, the reinforcing member 714 does not extend around the heel region 734. Rather, the second end 776 of the reinforcing member 714 rises from the bottom surface 712 of the outer 716 of the midfoot region 730 and extends posteriorly to the second distal end 780 located on the midsole 708 of the heel end 724. The second end 776 tapers from the midfoot region 730 and tapers to the second distal end 780. Furthermore, since the reinforcing member 714 does not wrap around the heel region 734, the heel cup 788 is provided to substantially enclose the user's heel. The heel cup 788 is made of a rigid or semi-rigid plastic such as TPU. In this case, the heel cup 788 is formed from translucent TPU.

[0085] Any embodiment described herein may be modified to include any of the structures or methodologies disclosed in relation to different embodiments. For example, certain features and combinations of features presented in relation to a particular embodiment in the above description may be used in several embodiments and other combinations as needed. Similarly, in some embodiments, materials or construction techniques other than those disclosed above may be substituted or added according to known approaches. Furthermore, this disclosure is not limited to the types of footwear specifically shown. Moreover, any aspect of footwear in any of the embodiments disclosed herein may be modified to work in conjunction with any type of footwear, clothing, or other athletic equipment.

[0086] As stated above, while this disclosure is described in relation to specific embodiments and examples, it will be understood by those skilled in the art that this disclosure is not necessarily limited in this way, and that numerous other embodiments, examples, uses, modifications, and departures from embodiments, examples, and uses are intended to be included in the claims appended herein. [Industrial applicability]

[0087] Numerous modifications to the present invention will be apparent to those skilled in the art in light of the foregoing description. Therefore, this description should be interpreted as illustrative only and is presented for the purpose of enabling those skilled in the art to manufacture and use the invention. Exclusive rights to all modifications included within the appended claims are reserved.

Claims

1. A sole structure for footwear, the sole structure comprising a midsole defining a first side portion and a second side portion extending between an upper surface and a bottom surface, A first end positioned along the bottom surface of the midsole, comprising a first sub-portion extending along the first side of the midsole and a second sub-portion extending across the bottom surface from the first side of the midsole to the second side of the midsole, A reinforcing member comprising: a second end extending upward from the first end to the second side of the midsole, which wraps around at least a portion of the heel region of the sole structure and extends to the first side of the midsole; Equipped with, The reinforcing member is at least partially disposed on the midsole in the heel region of the sole structure.

2. The sole structure according to claim 1, wherein the distal end of the second end is positioned closer to the midfoot region of the midsole than the heel end of the midsole.

3. The sole structure according to claim 1, wherein the first sub-portion of the reinforcing member is arranged in the forefoot region of the sole structure, and the second sub-portion of the reinforcing member is arranged in the midfoot region of the sole structure.

4. The sole structure according to claim 1, wherein the second end is positioned in both the midfoot region and the heel region of the sole structure.

5. The sole structure according to claim 1, wherein the inner surface of the first end of the reinforcing member is bonded to the midsole, and the outer surface of the first end of the reinforcing member forms at least a portion of the ground engagement surface of the sole structure.

6. The sole structure according to claim 5, wherein the first end is at least partially located within a channel formed in the midsole.

7. The sole structure according to claim 6, further comprising an outsole having a first outsole portion and a second outsole portion separated by the reinforcing member, wherein the first outsole portion and the second outsole portion form the remaining portion of the ground engagement surface of the sole structure.

8. The sole structure according to claim 7, wherein the first end includes a first flange extending from a first edge of the first end, and the first flange is fixed between the midsole and at least one of the first outsole portion or the second outsole portion.

9. The sole structure according to claim 8, wherein the first end includes a second flange extending from a second edge opposite to the first end, and the second flange is fixed between the midsole and the other of the first outsole portion or the second outsole portion.

10. Footwear, The upper and, The footwear comprises a sole structure that is connected to the upper and extends through the forefoot, midfoot, and heel regions of the footwear, The sole structure described above is Midsole and, The outsole is attached to the bottom surface of the midsole, The outsole comprises a reinforcing member that wraps around the midsole from a first distal end on the inner side of the forefoot region, traverses the outer side of the midsole in the midfoot region, extends upward along the outer side of the midsole from the midfoot region to the heel region, continues around the periphery of the heel region, and terminates at a second distal end on the inner side of the midfoot region, The reinforcing member is attached to at least one of the midsole or the upper so as to wrap around the heel region of the footwear.

11. The footwear according to claim 10, further comprising an outsole bonded to the bottom surface of the midsole, wherein the outsole comprises a first outsole portion and a second outsole portion separated by the reinforcing member.

12. The footwear according to claim 11, wherein the outsole and the first end of the reinforcing member together form a ground engagement surface of the footwear.

13. The footwear according to claim 11, wherein the reinforcing member includes a flange fixed between the outsole and the midsole.

14. The footwear according to claim 10, wherein the outer surface of the reinforcing member includes a plurality of substantially parallel ridges extending along the length of the reinforcing member from the first distal end to the second distal end.

15. The footwear according to claim 10, wherein the first distal end of the reinforcing member is connected in the forefoot region to at least one of the inner side of the midsole or the upper.

16. The footwear according to claim 10, wherein the reinforcing member is at least partially disposed within a channel formed in the midsole.

17. Footwear, The upper and, The footwear comprises a sole structure that is connected to the upper and extends through the forefoot, midfoot, and heel regions of the footwear, The sole structure described above is Midsole and, A first end positioned along the bottom surface of the midsole, comprising: a first sub-portion extending along the inner side of the midsole in the forefoot region; and a second sub-portion extending across the bottom surface from the inner side to the outer side of the midsole in the midfoot region; A reinforcing member comprising: a second end extending upward from the first end to the outer side of the midsole in the midfoot region, the second end extending posteriorly along the outer side of the midsole, wrapping around the heel end of the midsole and extending to the inner side of the midsole; The reinforcing member is connected to the midsole and the upper, respectively, in at least one of the forefoot region or the heel region.

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