Article of footwear including sole structure

Abstract

A sole structure has a lateral side and a medial side opposite the lateral side. The sole structure has an outsole layer, a first support element including a first recess, a second support element coupled to the outsole layer and including a second recess, and a cushioning element disposed between the first support element and the second support element. The cushioning element has a plurality of pockets and a central pod. A first subset of the plurality of pockets is disposed on the outer side, a second subset of the plurality of pockets is disposed on the inner side, and a posterior pocket of the plurality of pockets extends from the outer side to the inner side. The first subset, the second subset, and the posterior pocket are separated from the central pod by a web region. The plurality of pockets is at least partially surrounded by the first recess and the second recess.

Description

[0001] Cross Reference to Related Applications

[0002] This application claims priority under 35 U.S.C. § 119(e) to U.S. Provisional Patent Application No. 63 / 511,406, filed June 30, 2023, the disclosure of which is hereby incorporated by reference in its entirety. TECHNICAL FIELD

[0003] The present disclosure relates generally to articles of footwear including sole structures, and more particularly to sole structures incorporating fluid-filled bladders. BACKGROUND

[0004] This section provides background information relating to the present disclosure and is not necessarily prior art.

[0005] Articles of footwear generally include an upper and a sole structure. The upper can be formed from any suitable materials to receive, secure, and support the foot on the sole structure. The upper can cooperate with laces, straps, or other fasteners to adjust the fit of the upper around the foot. A bottom portion of the upper proximate a bottom surface of the foot is attached to the sole structure.

[0006] The sole structure generally includes layered devices extending between a ground surface and the upper. One layer of the sole structure includes an outsole that provides durability and traction with the ground surface. The outsole can be formed from rubber or other materials that impart durability and abrasion resistance as well as enhanced traction with the ground surface. Another layer of the sole structure includes a midsole disposed between the outsole and the upper. The midsole provides cushioning for the foot and can be formed in part from a polymeric foam material that elastically compresses under applied loads to cushion the foot by attenuating ground reaction forces. The midsole can additionally be coupled to or alternatively incorporate fluid-filled bladders to increase durability of the sole structure as well as provide cushioning for the foot by elastically compressing under applied loads to attenuate ground reaction forces. The sole structure can also include a comfort-enhancing insole or sockliner located within a void proximate a bottom portion of the upper, and a strobel attached to the upper and disposed between the midsole and the insole or sockliner.

[0007] The midsole coupled to the fluid-filled bladder generally includes a bladder formed from two polymeric material barrier layers sealed or bonded together. The fluid-filled bladder is pressurized with a fluid such as air and can incorporate tensile members within the bladder to maintain the shape of the bladder when elastically compressed under applied loads, such as during athletic activities. Generally, the design of the bladder focuses on balancing support and cushioning characteristics for the foot related to responsiveness of the bladder when elastically compressed under applied loads. BRIEF DESCRIPTION OF DRAWINGS

[0008] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure.

[0009] Figure 1 is a side view of an article of footwear;

[0010] Figure 2 is a bottom perspective view of the sole structure of the article of footwear of Figure 1

[0011] Figure 3A is a perspective view of a cushioning element of the sole structure of Figure 2

[0012] Figure 3B is a top view of the cushioning element of Figure 3A

[0013] Figure 3C is a bottom view of the cushioning element of Figure 3A

[0014] Figure 3D is a side view of the cushioning element of Figure 3A

[0015] is a cross-sectional view of the cushioning element of Figure 4A Figure 3A is another cross-sectional view of the cushioning element of

[0016] Figure 4B Figure 3A is another cross-sectional view of the cushioning element of

[0017] Figure 4C is another cross-sectional view of the cushioning element of Figure 3A

[0018] Figure 5 is a top perspective view of a portion of an outsole of the sole structure of Figure 2

[0019] Figure 6A is a bottom perspective view of a midsole and a cushioning element of the sole structure of Figure 2

[0020] Figure 6B is a top perspective view of an outsole and a cushioning element of the sole structure of Figure 2

[0021] Figure 7 is a bottom view of the article of footwear of Figure 1

[0022] Figure 8 is a cross-sectional view of the sole structure of the article of footwear of Figure 1 ​​​​​​​​​​​​

[0023] Figure 9 is a side view of a sole structure of an article of footwear; Figure 1

[0024] Figure 10 is a side view of an alternative embodiment of an article of footwear;

[0025] Figure 11 is a bottom view of an alternative embodiment of another article of footwear;

[0026] Figure 12 is a bottom view of an alternative embodiment of another article of footwear;

[0027] Figure 13 is a side view of an alternative embodiment of another article of footwear; and

[0028] Figure 14 is a side view of an alternative embodiment of another article of footwear. Figure 13

[0029] In all of the drawings, corresponding reference numerals indicate corresponding parts throughout the various figures.DETAILED DESCRIPTION

[0030] Example configurations will now be described more fully with reference to the accompanying drawings. Example configurations are provided so that this disclosure will be thorough, and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth such as examples of specific components, devices, and methods, to provide a thorough understanding of the present disclosure. Those skilled in the art will recognize, however, that the example configurations can be practiced without the need for every

[0031] The terminology used herein is for the purpose of describing particular example configurations only and is not intended to be limiting. As used herein, the singular articles "a," "an," and "the" can be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order

[0032] ​​When an element or layer is referred to as being “on,” “engaged to,” “connected to,” “attached to,” or “coupled to” another element or layer, it can be directly on, engaged, connected, attached, or coupled to the other element or layer, or one or more intervening elements or layers can be present. In contrast, when an element is referred to as being “directly on,” “directly engaged to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, then there are no intervening elements or layers present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.

[0033] The terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections. Such elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be used only to distinguish one element, component, region, layer, or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as “first,” “second,” and other numerical terminology do not imply an order or sequence. Thus, a first element, component, region, layer, or section discussed below can be termed a second element, component, region, layer, or section, without departing from the teachings of example configurations.

[0034] In the following discussion, the terms about, approximately, essentially, and the like, when used to describe numerical values, mean a + / - 10% variation of the value, unless otherwise indicated.

[0035] The present disclosure relates to an article of footwear, such as Figure 1 The illustrated article of footwear 10 provides underfoot cushioning and responsiveness during use. Figure 1 The article of footwear 10 is depicted to further provide a balance of comfort and stability.

[0036] As Figure 1As shown, footwear 10 includes a sole structure 101 and an upper 100 attached to the sole structure 101. Footwear article 10 is divided into a forefoot region 12, a midfoot region 14, and a heel region 16. The heel region 16 includes gaps 270A and 270B and a contact area 272, which are described in further detail below. The forefoot region 12 includes a toe portion 12T that corresponds with the toes of the foot and a ball portion 12B that corresponds with the metatarsal-phalangeal (MTP) joints. The midfoot region 14 corresponds with the arch area of the foot, and the heel region 16 corresponds with rear portions of the foot, including the calcaneus. Footwear 10 also includes a forward end 18 proximate an anterior-most point of the forefoot region 12 and an aft end 20 proximate a posterior-most point of the heel region 16. For ease of discussion, footwear 10 is discussed with reference to a longitudinal axis 6-6, a medial-lateral axis AML (shown in Figure 3B FIG. 4), and a vertical axis 8-8, which are perpendicular to one another. The longitudinal axis 6-6 of footwear 10 extends along the length of footwear 10 from forward end 18 to aft end 20 and generally divides footwear 10 into a medial side 22 and a lateral side 24 (shown in Figure 8 FIG. 4). The medial-lateral axis AML extends from medial side 22 to lateral side 24. Thus, medial side 22 and lateral side 24 each correspond with opposite sides of footwear 10 and extend from forward end 18 to aft end 20. The vertical axis 8-8 extends from the bottom (i.e., ground-contacting portion) of footwear 10 to the top of footwear 10.

[0037] Still referring to Figure 1 , upper 100 includes an interior surface that defines an interior void configured to receive and secure a foot for support on sole structure 101. Upper 100 can be formed from one or more materials that are stitched or cemented together to form the interior void. Suitable materials for the upper include, but are not limited to, mesh, fabric, foam, leather, and synthetic leather. These materials are configured and positioned to impart properties such as durability, breathability, abrasion resistance, flexibility, and comfort.

[0038] In some examples, the upper 100 includes a strobel (not shown) having a bottom surface opposite the sole structure 101 and an opposite top surface defining a footbed of an interior void. Stitching or adhesive secures the strobel to the upper 100. The footbed is contoured to the contour of the bottom surface (e.g., plantar surface) of the foot. The upper 100 can incorporate additional layers, such as an insole or sockliner (not shown) disposed on the strobel and within the interior void of the upper 100 to receive the plantar surface of the foot to enhance the comfort of the article of footwear 10. An ankle opening 103 in the heel region 16 provides access to the interior void. For example, the ankle opening 103 receives the foot to secure the foot within the void and to facilitate entry and removal of the foot into and out of the interior void.

[0039] In some examples, one or more fasteners 105 extend along the upper 100 to adjust the fit of the interior void around the foot and to accommodate entry and removal of the foot into and out of the interior void. These fasteners 105 can include laces, straps, cords, hook-and-loop, or any other suitable type of fastener. The upper 100 can include a tongue portion (not shown) extending between the interior void and the fasteners.

[0040] With reference to Figure 2 The sole structure 101 includes a midsole 102 that includes a first support element 107. In some examples, the midsole 102 has a unitary construction. The sole structure 101 also includes a cushioning element 104 and an outsole 112. The outsole 112 includes a second support element 106 and an outsole layer 110. The outsole layer 110 extends from the midfoot region 14 to the forefoot region 12. The second support element 106 extends from the heel region 16 to the midfoot region 14. A distal end of the outsole layer 110 is curved upward toward the upper 100. Portions of the outsole 112 are configured to provide a ground-engaging surface of the article of footwear 10 that directly contacts the ground. The sole structure 101 is configured to provide cushioning properties to the article of footwear 10.

[0041] Still referring to Figure 2The first support element 107 includes a top surface 201 and a bottom surface 202. The bottom surface 202 includes a plurality of recesses 204, a plurality of elevations 206, a receiving portion 208, and a containment portion 210. The recesses 204, elevations 206, receiving portion 208, and containment portion 210 together form an interface region 203. The plurality of recesses 204 and the plurality of elevations 206 alternate with one another along the longitudinal axis 6-6 to form an undulating path along the bottom surface 202 of the first support element 107. The plurality of recesses 204 and the plurality of elevations 206 bound an outer side and an inner side of the containment portion 210. The receiving portion 208 bounds a forward-most portion of the containment portion 210. One of the plurality of recesses 204 bounds a rearward-most portion of the containment portion 210. The undulating path presents a plurality of peaks and valleys when viewed from the exterior of the article of footwear 10. The plurality of recesses 204 correspond to the peaks of the undulating path, and the plurality of elevations 206 correspond to the valleys of the undulating path. The containment portion 210 is generally oval-shaped, but can be any other suitable shape, including, for example, rectangular, triangular, diamond-shaped, etc. As shown, each of the plurality of elevations 206 has a circular shape, but can include any other shape (e.g., rectangular, triangular, irregular, jagged, etc.). Some of the plurality of recesses 204 and the plurality of elevations 206 are present in the heel region 16, and some of the plurality of recesses 204 and the plurality of elevations 206 are present in the midfoot region 14. As shown, the plurality of recesses 204 and the plurality of elevations 206 span the entire (or substantially the entire) length of the heel region 16, and only a portion of the midfoot region 14. However, the recesses 204 and elevations 206 can span the entire midfoot region 14 and some or all of the forefoot region 12.

[0042] The receiving portion 208 is a cavity positioned within the bottom surface 202 in the midfoot region 14. The receiving portion 208 has a generally rectangular shape, but can have another shape (e.g., square, triangular, oval, etc.). The receiving portion 208 provides access for removal of the cushioning element 104. Additionally, the receiving portion 208 receives a portion of the cushioning element 104, such as, for example, the inflation tube 245 of the cushioning element 104. The portion of the bottom surface 202 extending from the midfoot region 14 to the forefoot region 16 is devoid of and does not include the plurality of recesses 204, the plurality of elevations 206, and the receiving portion 208. In other words, the portion of the bottom surface 202 extending from the portion of the midfoot region 14 to the forefoot region 16 can be a substantially smooth surface. In other embodiments, the portion of the bottom surface 202 extending from the portion of the midfoot region 14 to the forefoot region 16 can include recesses 204 and / or elevations 206.

[0043] The first support element 107 includes a support material suitable to provide the article of footwear 10 with desired cushioning properties. For example, the first support element 107 can be composed of or include a polymeric support material. The polymeric support material can be a foamed polymeric support material, as described in greater detail below.

[0044] With reference to Figure 3A , the cushioning element 104 is a fluid-filled cushioning element, such as an air bladder or bladder. The cushioning element 104 is defined by the pockets 230, 232, 234, 236, and 238, the central pod 239, the different web regions 222, and the plurality of channels 224a, 224b, 224c, 224d, and 224e (shown in Figure 3C ). The web regions 222 extend between the central pod 239 and each of the respective pockets 230, 232, 234, 236, and / or 238. The web regions 222 also extend between respective adjacent pockets 230, 232, 234, 236, and / or 238. The pockets 230, 232, 234, 236, and / or 238 and the central pod 239 are shown in a fluid-filled state (e.g., inflated). Figure 3A ). The pockets 230, 232, 234, 236, 238, and / or the central pod 239 are filled via the inflation tube 245 to include any suitable fluid, such as a gas or a liquid. In examples, the gas includes air, nitrogen (N2), an inert gas, or any other suitable gas. In other examples, the pockets 230, 232, 234, 236, 238, and / or the central pod 239 include other media, such as granules, beads, ground recycled material, etc. (e.g., foamed beads and / or rubber beads). In examples, the fluid provided to the pockets 230, 232, 234, 236, and 238 and the central pod 239 is at atmospheric pressure, such that the pockets 230, 232, 234, 236, and 238 and the central pod 239 are not pressurized and each contain a volume of fluid exerting atmospheric pressure and / or causing the cushioning element 104 to be held at atmospheric pressure. It is contemplated that the pockets 230, 232, 234, 236, and / or 238 can be cylindrical, triangular, pentagonal, cubical, etc.

[0045] In some examples, the geometry (e.g., thickness, width, and length) of the pockets 230, 232, 234, 236, 238, and / or the central pod 239 defines the cushioning element 104. For example, each of the web region 222, the channels 224a, 224b, 224c, 224d, and / or 224e, the pockets 230, 232, 234, 236, and / or 238, and / or the central pod 239 seals fluid (e.g., air) within the interior void 226 (shown in Figure 4A FIG. 14) in each of the pockets 230, 232, 234, 236, and 238, and the central pod 239. Thus, the pockets 230, 232, 234, 236, 238, and / or the central pod 239 are associated with a region of the cushioning element 104 in which the interior surfaces of the cushioning element 104 are not joined together and, thus, are separated from one another. Each of the pockets 230, 232, 234, 236, and 238 are fluidically isolated from one another and the central pod 239. In other examples, each of the pockets 230, 232, 234, 236, and 238 can be in fluid communication with one another and the central pod 239. In other examples, some of the pockets 230, 232, 234, 236, and 238 can be in fluid communication with one another and the central pod 239, while other ones of the pockets 230, 232, 234, 236, and 238 are not in fluid communication with one another and the central pod 239.

[0046] Still referring to FIG. 14, the central pod 239 is disposed between the first and second lateral sides 202, 204 of the cushioning element 104. The central pod 239 is disposed between the first and second lateral sides 202, 204 of the cushioning element 104. The central pod 239 is disposed between the first and second lateral sides 202, 204 of the cushioning element 104. The central pod 239 is disposed between the first and second lateral sides 202, 204 of the cushioning element 104. The central pod 239 is disposed between the first and second lateral sides 202, 204 of the cushioning element 104. Figure 3AThe pocket 230 has a medial side 221a and a lateral side 223a. The medial side 221a is a generally circular surface of the pocket 230 on the medial side 22 of the article of footwear 10. The lateral side 223a is also a generally circular surface of the pocket 230 on the lateral side 24 of the article of footwear 10. The lateral side 223a is substantially similar to the medial side 221a such that the size of the lateral side 223a is substantially similar to the size of the medial side 221a. In other embodiments, the lateral side 223a is different than the medial side 221a. The pocket 232 includes a medial side 221b and the pocket 238 includes a medial side 221c. The pocket 234 includes a lateral side 223b and the pocket 236 includes a lateral side 223c. The medial sides 221b and 221c are substantially similar to the medial side 221a such that the size of the medial sides 221b and 221c is substantially similar to the size of the medial side 221a. In other embodiments, the medial sides 221b and 221c are different than the medial side 221a. In alternative examples, the medial side 221a is smaller than the medial sides 221b and 221c. In alternative examples, the medial side 221a is larger than the medial sides 221b and 221c. In alternative examples, the medial side 221b is smaller than the medial sides 221a and 221c. In alternative examples, the medial side 221b is larger than the medial sides 221a and 221c. In alternative examples, the medial side 221c is smaller than the medial sides 221a and 221b. In alternative examples, the medial side 221c is larger than the medial sides 221a and 221b. The lateral sides 223b and 223c are substantially similar to the lateral side 223a such that the size of the lateral sides 223b and 223c is substantially similar to the size of the lateral side 223a. In other embodiments, the lateral sides 223b and 223c are different than the lateral side 223a. In alternative examples, the lateral side 223a is smaller than the lateral sides 223b and 223c. In alternative examples, the lateral side 223a is larger than the lateral sides 223b and 223c. In alternative examples, the lateral side 223b is smaller than the lateral sides 223a and 223c. In alternative examples, the lateral side 223b is larger than the lateral sides 223a and 223c. In alternative examples, the lateral side 223c is smaller than the lateral sides 223a and 223b. In alternative examples, the lateral side 223c is larger than the lateral sides 223a and 223b.

[0047] In examples, the total number of pockets 230, 232, 234, 236, and 238 is five. It is contemplated that the number of pockets can be one, two, three, four, five, or more to provide the desired cushioning characteristics. In examples, the pockets 230, 232, 234, 236, and 238 can be arranged such that there is a rearmost pocket 230, a central medial pocket 232, a central lateral pocket 234, a forwardmost lateral pocket 236, and a forwardmost medial pocket 238. The width of each of the pockets 230, 232, 234, 236, and 238 extends parallel to the medial-lateral axis AML.

[0048] With reference to Figure 3B A distance D1 is provided between the central pod 239 and the pocket 230. The distance D1 extends between opposing outer surfaces of the central pod 239 and the pocket 230. The distance D1 can be, for example, about 5 mm. A distance D2 is provided between the central pod 239 and the pocket 232. The distance D2 extends between opposing outer surfaces of the central pod 239 and the pocket 232. The distance D2 can be, for example, about 5 mm. A distance D3 is provided between the central pod 239 and the pocket 234. The distance D3 extends between opposing outer surfaces of the central pod 239 and the pocket 234. The distance D3 can be, for example, about 5 mm. A distance D4 is provided between the central pod 239 and the pocket 236. The distance D4 extends between opposing outer surfaces of the central pod 239 and the pocket 236. The distance D4 can be, for example, about 5 mm. A distance D5 is provided between the central pod 239 and the pocket 238. The distance D5 extends between opposing outer surfaces of the central pod 239 and the pocket 238. The distance D5 can be, for example, about 5 mm. In examples, each of the distances D1, D2, D3, D4, and D5 are the same, and a uniform region is formed between the central pod 239 and each of the pockets 230, 232, 234, 236, and 238. In other examples, any of the distances D1, D2, D3, D4, and D5 can be different from one another, thereby forming a non-uniform region between the central pod 239 and each of the pockets 230, 232, 234, 236, and 238.

[0049] The width of the recess 230 (e.g., in the medial-lateral direction) corresponds to the width of the recess 230 extending from the medial side 22 to the lateral side 24. The width of the recess 230 is measured from a medial center point 283 on the medial side face 221a of the recess 230 to a lateral center point 285 on the lateral side face 223a of the recess 230. The center point 283 is centrally disposed on the medial side face 221a between a first surface of the recess 230 (e.g., a top surface facing the upper 100) and a second surface of the recess 230 (e.g., a bottom surface facing the ground surface). The center point 283 is disposed at a middle location along the longitudinal dimension of the recess 230. The center point 285 is centrally disposed on the lateral side face 223a between a first surface of the recess 230 (e.g., a top surface facing the upper 100) and a second surface of the recess 230 (e.g., a bottom surface facing the ground surface). The center point 285 is disposed at a middle location along the longitudinal dimension of the recess 230. The width of the recess 230 is measured using a centerline extending along the medial-lateral axis AML. In addition to or instead of using the centerline, the width can be measured using any line extending between the medial side face 221a and the lateral side face 223a and parallel to the medial-lateral axis AML. The line extending between the medial side face 221a and the lateral side face 223a and parallel to the medial-lateral axis AML of the recess 230 includes a value that can be denoted as an average width. The average width is an average of values obtained via lines taken between the medial side face 221a and the lateral side face 223a and parallel to the medial-lateral axis AML. Additionally or alternatively, the width can be measured between longitudinal centers of the medial side face 221a and the lateral side face 223a.

[0050] The width of the recesses 232, 234, 236, and 238 (e.g., in the medial-lateral direction) corresponds to the width of the given recess 232, 234, 236, and 238 extending from the area on the outer edge of the web region 222 adjacent to the given recess to the respective medial or lateral face of the given recess 232, 234, 236, and 238. The width can be measured using any line extending between the outer edge of the web region 222 and the face of the given recess 232, 234, 236, and 238. The line extending between the outer edge of the web region 222 and the face of the given recess 232, 234, 236, and 238 and parallel to the medial-lateral axis AML includes a value that can be denoted as an average width. The average width is an average of values obtained via lines taken between the outer edge of the web region 222 and the face of the given recess 232, 234, 236, and 238 and parallel to the medial-lateral axis AML. Additionally or alternatively, the width can be measured between longitudinal centers of the outer edge of the web region 222 and the respective medial or lateral face of the given recess 232, 234, 236, and 238.

[0051] The pocket 230 has a width 230W. The pocket 232 has a width 232W. The pocket 234 has a width 234W. The pocket 236 has a width 236W. The pocket 238 has a width 238W. The widths of the pockets 230, 232, 234, 236, and 238 are denoted as average widths. The width 230W can range from about 0.5 cm to about 15 cm. The width 230W can range from about 2 cm to about 12 cm. The width 230W can range from about 3 cm to about 10 cm. In an example, the width 230W is about 5 cm. The widths 232W, 234W, 236W, 238W can range from about 0.5 cm to about 8 cm. The widths 232W, 234W, 236W, 238W can range from about 0.75 cm to about 6 cm. The widths 232W, 234W, 236W, 238W can range from about 1 cm to about 5 cm. In an example, the width 232W is about 1 cm. In an example, the width 234W is about 1 cm. In an example embodiment, the width 236W is about 0.8 cm. In an example, the width 238W is about 0.8 cm.

[0052] In an example, the width 230W is greater than each of the widths 232W, 234W, 236W, and 238W. In one example, the widths 232W and 234W are substantially similar or the same. In one example, the widths 236W and 238W are substantially similar or the same. In one example, the widths 232W and 234W can vary from one width to another. In one example, the widths 236W and 238W can vary from one width to another. The width of the central medial pocket 232 can be greater than the forward-most lateral pocket 236 and the forward-most medial pocket 238. The width of the central lateral pocket 234 can be greater than the forward-most lateral pocket 236 and the forward-most medial pocket 238. In other examples, each of the pockets 232, 234, 236, and 238 can have substantially similar widths. It is contemplated that any of the pockets 232, 234, 236, or 238 can have a different width than one or more other pockets. It is also contemplated that the pockets 232, 234, 236, and / or 238 can have substantially similar widths. As Figure 3A As shown in the examples in FIGS. 1-3, the pockets 230, 232, 234, 236, and / or 238 facilitate transitions during ambulation by rolling the foot from the largest pocket 230 through the pockets 232, 234, 236, 238, and / or the central pod 239. The pockets 230, 232, 234, 236, and 238 additionally provide the desired form of underfoot cushioning.

[0053] The central pod 239 extends between the inner edges of the web region 222, corresponding to a width (e.g., in the medial-lateral direction) of the central pod 239. The width of the central pod 239 is measured between the inner edges of the web region 222. The width of the central pod 239 is measured through a longitudinal center of the central pod 239. The width of the central pod 239 is measured between the inner edges of the web region 222 disposed adjacent the central pod 239 using a centerline extending parallel to the medial-lateral axis AML. In addition to or instead of using the centerline, the width can be measured using any line extending between the inner edges of the web region 222 and parallel to the medial-lateral axis AML. The line extending between the inner edges of the web region 222 and parallel to the medial-lateral axis AML of the central pod 239 includes a value that can be denoted as an average width. The average width is an average of values obtained via lines taken between the inner edges of the web region 222 and parallel to the medial-lateral axis AML.

[0054] The central pod 239 has a width 239W. The width 239W can be in a range from about 2 cm to about 15 cm. The width 239W can be in a range from about 2 cm to about 12 cm. The width 239W can be in a range from about 3 cm to about 10 cm. In an example, the width 239W is about 5 cm.

[0055] The outer surface of the pocket 230 is spaced apart from the outer surface of the pocket 232 by a first length LI. The outer surface of the pocket 234 is spaced apart from the outer surface of the pocket 230 by a second length L2. The outer surface of the pocket 232 is spaced apart from the outer surface of the pocket 238 by a third length L3. The outer surface of the pocket 234 is spaced apart from the outer surface of the pocket 236 by a fourth length L4. In an example, the first length LI, the second length L2, the third length L3, and the fourth length L4 are the same or approximately the same. In an alternative example, one or more of the first length LI, the second length L2, the third length L3, and the fourth length L4 are different from one another. In an example, the first length LI, the second length L2, the third length L3, and / or the fourth length are about 9 mm. Alternatively, the first length LI, the second length L2, the third length L3, and / or the fourth length L4 are about 12 mm.

[0056] Referring to Figure 3CChannels 224a, 224b, 224c, 224d, and 224e extend between each of pockets 230, 232, 234, 236, and 238 and central pod 239, respectively, corresponding to a width (e.g., in the medial-lateral direction) of channels 224a, 224b, 224c, 224d, and 224e. The width of channels 224a, 224b, 224c, 224d, and 224e is approximately the width of webbing area 222 between each of pockets 230, 232, 234, 236, and 238 and central pod 239, respectively. Channels 224a, 224b, 224c, 224d, and 224e are not in fluid communication with central pod 239, nor are they in fluid communication with pockets 230, 232, 234, 236, and 238. In alternative examples, channels 224a, 224b, 224c, 224d, and 224e can be in fluid communication with central pod 239 as well as pockets 230, 232, 234, 236, and 238. Channels 224a, 224b, 224c, 224d, and / or 224e are disposed proximate to outsole layer 110 such that channels 224a, 224b, 224c, 224d, and / or 224e are disposed on a bottom, ground-facing surface of cushioning element 104. In alternative embodiments, any one or more of the channels can be disposed on a top, upward-facing surface of cushioning element 104 or within cushioning element 104.

[0057] Figure 3D A side view of cushioning element 104 is shown. The height of central pod 239 can be less than the height of pockets 230, 232, 234, 236, 238. In alternative embodiments, the height of central pod 239 can be greater than the height of pockets 230, 232, 234, 236, 238. In some other alternative embodiments, the height of central pod 239 can be the same as the height of pockets 230, 232, 234, 236, 238. In some other alternative embodiments, the height of central pod 239 can be the same as the height of some of pockets 230, 232, 234, 236, 238. In some other alternative embodiments, the height of central pod 239 can be less than the height of some of pockets 230, 232, 234, 236, 238. In some other alternative embodiments, the height of central pod 239 can be greater than the height of some of pockets 230, 232, 234, 236, 238.

[0058] Referring to Figure 4A , Figure 4B and Figure 4Ccross sections taken along lines 4A-4A, 4B-4B, and 4C-4C, respectively, illustrate that a space can be formed between the opposing interior surfaces of each of the pockets 230, 232, 234, 236, 238 and the central pod 239 to define each respective interior void 226. As shown with reference to the pocket 232 in FIG. 3B, the interior surfaces of each of the pockets 230, 232, 234, 236, 238 and the central pod 239 include an inboard (first) interior surface 291, an interior (fourth) surface 293, an outboard (second) interior surface 295, and an upper (third) interior surface 297. Similarly, the exterior surfaces of each of the pockets 230, 232, 234, 236, 238 and the central pod 239 define the exterior profile of the cushioning element 104. Figure 4A

[0059] The pockets 230, 232, 234, 236, 238 and the central pod 239 of the cushioning element 104 include an average cross-sectional dimension (e.g., an average height). This average height can be the average of all heights of a given longitudinal-vertical plane. This longitudinal-vertical plane is taken at the midpoint of the respective pocket 230, 232, 234, 236, 238 and the central pod 239 along and perpendicular to the inboard-outboard axis AML. The pockets 230, 232, 234, 236, 238 and the central pod 239 can be sectioned and observed along a line extending parallel to the vertical plane 8-8, which line represents height. As an example, a vertical line VI extends between the upper interior surface 297 and the interior surface 293 of the pocket 232. A vertical line V2 extends between the upper interior surface 297 and the interior surface 293 of the central pod 239. A vertical line V3 extends between the upper interior surface 297 and the interior surface 293 of the pocket 234. Any given vertical line (e.g., vertical lines VI, V2, and V3) extending from the upper interior surface 297 to the interior surface 293 is considered the height of the respective pocket 230, 232, 234, 236, 238 and the central pod 239. The average height (230D, 232D, 234D, 236D, 238D, and 239D) is obtained by averaging the set of vertical lines within the respective pocket.

[0060] Accordingly, the term "average height" as used throughout this DETAILED DESCRIPTION and the claims is to be understood to mean the average of the heights of the respective pockets 230, 232, 234, 236, 238 and the central pod 239 over different portions, and does not necessarily refer to the height of the respective pockets 230, 232, 234, 236, 238 and the central pod 239 at a particular portion.

[0061] ​Each of the average heights of each of the pockets 230, 232, 234, 236, 238 and the central pod 239 extends parallel to a plane that contains the vertical axis 8-8. The average height is the average of the values obtained via a plurality of lines that are taken between the inner surfaces of each of the pockets 230, 232, 234, 236, 238 and the central pod 239 and that are parallel to the vertical axis 8-8. The pocket 230 has a first average height 230D and a second average height 230D'. The first average height 230D is different than the second average height 230D'. The first average height 230D is disposed within the inboard portion 230a or the outboard portion 230b of the pocket 230 and the second average height 230D' is disposed within the central portion 230c of the pocket 230. The pocket 232 has an average height 232D. The pocket 234 has an average height 234D. The pocket 236 has an average height 236D. The pocket 238 has an average height 238D. The central pod 239 has an average height 239D. The average heights 230D, 230D', 232D, 234D, 236D, 238D, and 239D are between about 0.5 cm and about 10 cm. In an example, the average height 230D is about 5 cm. In an example, the average height 230D' is about 2 cm. In an example, the average height 232D is about 7 cm. In an example, the average height 234D is about 7 cm. In an example, the average height 236D is about 5 cm. In an example, the average height 238D is about 5 cm. In an example, the average height 239D is about 3 cm.

[0062] In one example, the average height of each of the pockets 230, 232, 234, 236, 238 and the central pod 239 is the same when viewed in a plane that extends parallel to the vertical axis 8-8. In this embodiment, the average height is 5 cm. In one example, the average height varies when viewed in a plane that extends parallel to the vertical axis 8-8. For example, the average height can decrease as one moves from the inboard side 22 to the outboard side 24. As another example, the average height can increase as one moves from the inboard side 22 to the outboard side 24. As another example, the average height is higher at outer regions of each of the pockets 230, 232, 234, 236, 238 as one moves from the inboard side 22 to the outboard side 24 and is shorter at inner regions of each of the pockets 230, 232, 234, 236, 238. The outer regions are at respective end portions of each of the pockets 230, 232, 234, 236, 238. The respective end portions include the inboard faces 221a, 221b, and 221c and the outboard faces 223a, 223b, and 223c, and regions disposed directly adjacent to the web regions 222. The inner regions are disposed between the respective outer regions.

[0063] In one example, the height 232D, 234D, 236D, and 238D of each of the pockets 232, 234, 236, and 238 is substantially similar or identical. In one example, the height 232D, 234D, 236D, and 238D of each of the pockets 232, 234, 236, and 238 is different from one another.

[0064] Referring to Figure 5 The second support element 106 includes a medial segment 242 and a lateral segment 244. The segment 242 is disposed on the medial side 22 and the segment 244 is disposed on the lateral side 24. The second support element 106 includes a heel portion 241 and a midfoot portion 243. The second support element 106 extends from the heel region 16 to the midfoot region 14. In other examples, the second support element 106 can extend from the heel region 16 to the forefoot region 12. In other examples, the second support element 106 can extend only in the heel region 16.

[0065] The second support element 106 also includes a receptacle 240 bounded by the segment 242, the segment 244, the heel portion 241, and the midfoot portion 243. The receptacle 240 can have an oval shape. It is contemplated that the receptacle 240 can be shaped as a diamond, a square, a circle, etc. that is suitable to receive the central pod 239.

[0066] The medial segment 242 and the lateral segment 244 of the second support element 106 include one or more recesses. The one or more recesses are formed on the top surface of the medial segment 242 and the lateral segment 244. The one or more recesses can include one, two, three, four, five, or more recesses. In an example, the recesses include two pairs of recesses 246a and 246b and a recess 246c. The recesses have a generally curved shape. Each individual recess 246a, 246b, and 246c is configured to receive a corresponding pocket 230, 232, 234, 236, and 238. It is contemplated that the recesses include any shape that is suitable to receive the pockets 230, 232, 234, 236, and 238 of the cushioning element 104. When viewed externally, the second support element 106 undulates between peaks and valleys, or has other serpentine curves. The valleys correspond to the recesses. The peaks correspond to portions of the respective medial segment 242 and lateral segment 244 that separate adjacent recesses.

[0067] Referring to Figure 6A The cushioning element 104 is coupled to the first support element 107. Referring to Figure 6BThe cushioning element 104 is coupled to a second support element 106. The second support element 106 is coupled to the outsole layer 110 at a connection region 602. This connection region 602 is disposed in the midfoot region 14. Upon assembly, one or more pockets 230, 232, 234, 236, 238 of the cushioning element 104 fit within the confines of the recess 204 of the first support element 107 (shown in Figure 2 ) and the recesses 246a, 246b, 246c of the second support element 106 (shown in Figure 5 ). Upon assembly, the recesses 246a, 246b, 246c form a continuous receiving area for the one or more pockets 230, 232, 234, 236, 238 and the central pod 239. In an example, the recess 204 of the first support element 107 is located on the top surface of the pockets 230, 232, 234, 236, 238 and the central pod 239, and the protuberance 206 extends downward toward the web region 222, but the recess 204 does not contact any portion of the web region 222 when the shoe is in a resting state with a user’s foot not inserted into the recess. It is contemplated that in alternative examples, the recess 204 of the first support element 107 does not contact the top surface of the pockets 230, 232, 234, 236, 238 and the central pod 239. In further alternative examples, the recess 204 contacts the periphery of the pockets 230, 232, 234, 236, and 238, but does not contact the central pod 239.

[0068] The second support element 106 receives the bottom surface of the pockets 230, 232, 234, 236, 238, the central pod 239, and the web region 222, as shown in Figure 6B . In alternative examples, the second support element 106 can not contact the web region 222, such that a gap is preserved between the web region 222 and the second support element 106.

[0069] Reference is made to Figure 7The second support element 106 and the outsole layer 110 include a plurality of traction elements disposed on a bottom surface thereof. In an example, the plurality of traction elements includes one of traction element shapes 274A, 274B, and 274C. The plurality of traction elements 274A, 274B, and 274C having traction element shape 274A extend from the midfoot region 14 to the forefoot region 12. The traction elements 274A do not extend all the way through the forefoot region 12 to the front end 18. The plurality of traction elements 274A, 274B, and 274C having traction element shape 274B extend between a portion of the heel region 16 and the midfoot region 14. The traction elements 274B are adjacent to the traction elements 274A and the traction elements 274C. The plurality of traction elements 274A, 274B, and 274C having traction element shape 274C are present in the heel region 16 and the forefoot region 12. The traction elements 274C are adjacent to the traction elements 274A and 274B. The traction elements 274A and 274A are disposed between the traction elements 274C, thereby dividing the traction elements 274C into separate groups of traction elements 274C. The plurality of traction elements 274A through 274C have a generally square shape. It is contemplated that the plurality of traction elements 274A, 274B, and 274C can be rectangular, oval, triangular, irregular, linear, or any shape that provides the desired form of grip for the article of footwear 10. The traction elements can be arranged in any configuration that is suitable to provide the desired form of grip or traction for the article of footwear 10.

[0070] When the bottom of the sole structure 101 is viewed along the outer path of line A, the bottom of the sole structure 101 can include the medial side segment 242 and the lateral side segment 244, the central portion 260 of the second support element 106 and the outsole layer 110. When the bottom of the sole structure 101 is viewed along the outer path of line B, the sole structure 101 can include only the outsole layer 110.

[0071] Referring to Figure 9 The first support element 107 and the outsole layer 110 are in direct contact with each other at a contact area 272, which can extend along the midfoot region 14 to the forefoot region 12. As shown in cross-section, the size and shape of each of the first support element 107, the second support element 106, and the cushioning element 104 are set to fit together. The second support element 106 extends around a rear portion of the first support element 107.

[0072] Referring to Figure 9The web region 222 and the space between the ridge 206 or the respective medial segment 242 and lateral segment 244 (separating adjacent concavities 246) form one or more exposed gaps 270, including first gap 270A and second gap 270B (shown in Figure 1 FIG. 13), that include the first support element 107. In other words, the first support element 107 covers the top surface of the pockets 230, 232, 234, 236, 238, and the central pod 239, such that the one or more exposed gaps 270A and 270B are maintained between the ridge 206 and the web region 222. The gaps 270A and 270B extend from the medial side 22 to the lateral side 24, corresponding to the width of the article of footwear. The gap 270A extends from the first support element 107 to the web region 222. The gap 270B extends from the second support element 106 to the web region 222. The gaps 270A and 270B are respective distances between the web region 222, the first support element 107, and the second support element 106. The width of the gaps 270A and 270B extend parallel to the medial-lateral axis AML. The height of the gaps 270A, 270B extend parallel to the vertical axis 8-8.

[0073] The gaps 270A and 270B expose the web region 222 of the cushioning element 104. In other words, the assembled sole structure 101 forms the gaps 270A and 270B between the first support element 107 and the second support element 106 in the heel region 16 and the midfoot region 14, such that a viewer would see the central pod 239. In other words, the web region 222 is open to the environment when viewed from a vantage point outside of the sole structure 101.

[0074] In one example, the gap 270A on the medial side 22 is greater than the gap 270A on the lateral side 24. In one example, the gap 270B on the medial side 22 is greater than the gap 270B on the lateral side 24.

[0075] In one example, the gap 270A on the medial side 22 is less than the gap 270A on the lateral side 24. In one example, the gap 270B on the medial side 22 is less than the gap 270B on the lateral side 24.

[0076] Continuing with the side view shown in Figure 10 FIG. 13, the sole structure 101 includes the outsole layer 110, the second support element 106, the cushioning element 104, and the first support element 107 when the exterior of the article of footwear 10 is viewed from the ground up.

[0077] When viewed from the ground up along the exterior path of line A', the sole structure 101 can include the outsole layer 110, the second support element 106, and the first support element 107. When viewed from the ground up along the exterior path of line B', the sole structure 101 can include the outsole layer 110, the second support element 106, one of the pockets 230, 232, 234, 236, and / or 238 of the cushioning element 104, and the first support element 107. When viewed from the ground up along the exterior path of line C', the sole structure 101 can include the outsole layer 110, the exposed gap 270B, the web region 222, the exposed gap 270A, and the first support element 107. When viewed from the ground up along the exterior path of line D', the sole structure 101 can include the outsole layer 110, the second support element 106, and the first support element 107. When viewed from the ground up along the exterior path of line E', the sole structure 101 can include the outsole layer 110 and the first support element 107.

[0078] The combination of the first support element 107, the second support element 106, and the cushioning element 104 disposed therebetween provides improved feel and performance during use of the article of footwear 10. In an example embodiment, when the cushioning element 104 is a fluid-filled bladder, the first support element 107 is an elastomeric material, and the second support element 106 is an elastomeric material, the sole structure 101 provides a unique durable and comfortable feel to the user of the article of footwear 10. Additionally, when the article of footwear 10 is configured with the gap 270, the cushioning element 104 is given room to move around within the article of footwear 10. In other words, the cushioning element 104 is allowed to flex, expand, contract, and / or slide within the article of footwear 10. In this example, the responsiveness of the cushioning element 104 is improved.

[0079] In alternative examples, the plurality of recesses 204 and the plurality of elevations 206 do not extend into the midfoot region 14 and are disposed only in the heel region 16. In other examples, the plurality of recesses 204 and the plurality of elevations 206 extend through the entire midfoot region 14. It is also contemplated that the plurality of recesses 204 and the plurality of elevations 206 extend through the entire midfoot region 14 and extend into a portion or all of the forefoot region 12. It is also contemplated that the plurality of recesses 204 and the plurality of elevations 206 extend longitudinally through the entire first support element 107 from the heel region 16 through the forefoot region 12.

[0080] In some examples, such as, for example, Figure 10As shown, there is no gap between the first support element 107 and the cushioning element 104, and there is also no gap between the second support element 106 and the cushioning element 104. For example, the recess 204 of the first support element 107 is on the top surface of the pockets 230, 232, 234, 236, and 238, and the protuberance 206 extends downward toward the web region 222. In this alternative example, the protuberance 206 contacts the top or bottom of the web region 222 when the shoe is in a resting state with no user’s foot inserted therein. In other words, there is no exposed gap between the protuberance 206 and the web region 222. The protuberance 206 is flush with the web region 222. The first support element 107 covers the entire top surface of the cushioning element 104. Additionally, the bottom surface of the cushioning element 104 is surrounded by the second support element 106, such that there is no gap between the cushioning element 104 and the second support element 106. In this alternative example, the entire top surface and the entire bottom surface of the cushioning element 104 are surrounded by the first support element 107 and the second support element 106, respectively. The rear portions of the first support element 107 and the second support element 106 can be flush with each other at the rear end 20, forming a flush interface.

[0081] In alternative examples, the plurality of traction elements 274 includes only one shape. In Figure 11 As shown, the plurality of traction elements 274 includes only one shape. In Figure 12 In the alternative embodiment shown, the outsole layer 110 is devoid of traction elements 274. In other words, in the alternative embodiment, the outsole layer 110 has a smooth or relatively smooth bottom surface.

[0082] The article of footwear 10 includes alternatingly shaped elements to provide varying underfoot sensations. Figure 13 and Figure 14 An example of an alternative sole structure is shown in which the cushioning element 104 is not visible from an exterior view of the article of footwear 10. The cushioning element 104 is entirely housed within the midsole 102 of the sole structure 101. It is contemplated that the cushioning element 104 can be only partially surrounded by the midsole 102.

[0083] It is contemplated that, in other alternative examples, the cushioning element 104 can directly contact the outsole layer 110. In other words, in certain alternative examples, the second support element 106 can be omitted. In other alternative examples, the cushioning element 104 can directly contact a ground surface. In other words, the outsole layer 110 can not extend to the heel region, and the second support element 106 can be omitted. In other alternative examples, the sole structure 101 can have a unitary construction.

[0084] In some examples, a blow molding process can be utilized to form some or all of the cushioning element 104. Generally, a suitable blow molding process involves positioning an insert within at least one of two mold portions, and then positioning a parison between the mold portions. The parison is generally a hollow and tubular structure of molten polymeric material. The molten polymeric material is extruded from the mold as the parison is formed. The wall thickness of the parison can be substantially constant, or can vary around the periphery of the parison. Thus, a cross-sectional view of the parison can present regions having different wall thicknesses. After the parison is placed between the mold portions, the mold portions approximate the parison, and pressurized air within the parison causes the liquefied elastomeric material to contact the surfaces of the mold. Additionally, the closure of the mold portions and the introduction of pressurized air causes the liquefied elastomeric material to contact the surfaces of the insert. Air can also be evacuated from the region between the parison and the mold to further facilitate molding and bonding.

[0085] In some examples, portions of the cushioning element 104 can be formed during a thermoforming process by respective mold portions. Each mold portion can define various surfaces and extrusion surfaces for forming recesses that correspond to locations where the upper and lower films are joined and bonded together to form the web region 222. In some examples, adhesive bonding can join the upper and lower films to form the web region 222. In other examples, the upper and lower films can be joined to form the web region 222 by thermal bonding. In some examples, one or both of the films can be heated to a temperature that promotes shaping and fusing. In some examples, the films can be heated prior to being positioned between their respective molds. In other examples, the molds can be heated to increase the temperature of the films. In some implementations, the molding process for forming the pockets 230, 232, 234, 236, 238 and the central pod 239 can incorporate vacuum ports within the mold portions to remove air such that the upper and lower films are drawn into contact with the surfaces of the respective mold portions. In other examples, a fluid, such as air, can be injected into the region between the upper and lower films such that pressure is increased, causing the films to engage the surfaces of their respective mold portions. The fluid can be injected into the pockets 230, 232, 234, 236, 238 and the central pod 239 until a desired pressure is achieved. Once the pockets 230, 232, 234, 236, 238 and the central pod 239 achieve the desired pressure, the pockets 230, 232, 234, 236, 238 and the central pod 239 are fluidly sealed from one another.

[0086] As used herein, the term“barrier film” encompasses both single-layer films and multi-layer films. In some examples, one or both of the barrier films is produced from a single-layer film (a single layer) (e.g., thermoformed or blow molded). In other examples, one or both of the barrier films is produced from a multi-layer film (multiple layers) (e.g., thermoformed or blow molded). The one or more pockets 230, 232, 234, 236, 238 and central pod 239 can be produced from the barrier film using any suitable technique such as thermoforming (e.g., vacuum thermoforming), blow molding, extrusion, injection molding, vacuum forming, spin forming, transfer forming, pressure forming, heat sealing, casting, low pressure casting, spin casting, reaction injection molding, radio frequency (RF) welding, etc. In examples, the barrier film can be produced by co-extrusion followed by vacuum thermoforming to produce the inflatable tube of the one or more pockets 230, 232, 234, 236, 238 and central pod 239, which can optionally include one or more valves (e.g., one-way valves) that allow the pockets 230, 232, 234, 236, 238 and central pod 239 to be filled with a fluid (e.g., a gas) and formed into a fluid-filled barrier. The barrier film can each be produced from an elastomeric material that includes one or more thermoplastic polymers and / or one or more cross-linkable polymers. In examples, the elastomeric material can include one or more thermoplastic elastomeric materials such as one or more thermoplastic polyurethane (TPU) copolymers, one or more ethylene-vinyl alcohol (EVOH) copolymers, etc.

[0087] As used herein,“polyurethane” refers to a copolymer (including an oligomer) that contains urethane groups (—N(C=0)0—). In addition to the urethane groups, these polyurethanes can include additional groups such as esters, ethers, ureas, allophanates, biurets, carbodiimides, oxazolidines, isocyanurates, uretdiones, carbonates, etc. In an aspect, one or more of the polyurethanes can be produced by polymerizing one or more isocyanates with one or more polyols to produce a copolymer chain having (—N(C=0)0—) linkages.

[0088] Examples of suitable isocyanates for producing polyurethane copolymer chains include diisocyanates, such as aromatic diisocyanates, aliphatic diisocyanates, and combinations thereof. Examples of suitable aromatic diisocyanates include toluene diisocyanate (TDI), an adduct of TDI with trimethylolpropane (TMP), methylene diphenyl diisocyanate (MDI), xylene diisocyanate (XDI), tetramethylxylylene diisocyanate (TMXDI), hydrogenated xylene diisocyanate (HXDI), naphthalene 1,5-diisocyanate (NDI), 1,5-tetrahydronaphthalene diisocyanate, p-phenylene diisocyanate (PPDI), 3,3'-dimethyldiphenyl-4,4'-diisocyanate (DDDI), 4,4'-dibenzyl diisocyanate (DBDI), 4-chloro-l,3-phenylene diisocyanate, and combinations thereof. In some embodiments, these copolymer chains are substantially free of aromatic groups.

[0089] In particular examples, the polyurethane polymer chains are produced from diisocyanates including HMDI, TDI, MDI, H12 aliphatic compounds, and combinations thereof. In one aspect, the thermoplastic TPU can include a polyester-based TPU, a polyether-based TPU, a polycaprolactone-based TPU, a polycarbonate-based TPU, a polysiloxane-based TPU, or combinations thereof.

[0090] In another example, the polymeric layer can be formed from one or more of EVOH copolymer, poly(vinyl chloride), polyvinylidene polymers and copolymers (e.g., polyvinylidene chloride), polyamides (e.g., amorphous polyamide), amide-based copolymers, acrylonitrile polymers (e.g., acrylonitrile-methyl acrylate copolymer), polyethylene terephthalate, polyetherimide, polyacrylic imide, and other polymeric materials known to have a relatively low gas permeability. These materials, as well as blends with the TPU copolymers described herein, and optionally including combinations of polyimide and crystalline polymers, are also suitable. The cushioning elements described herein are resilient structures configured to retain fluids, particularly gases. Generally, the fluids need to be retained over the expected life of the cushioning element, including when the cushioning element is exposed to repeated cycles of applied and released forces or pressures, as would be encountered when the cushioning element is used in an article of footwear. As many polymeric materials traditionally used to manufacture consumer goods are relatively impermeable to water and aqueous solutions, but permeable to small gas molecules such as air, oxygen (O2) and nitrogen (N2) and inert gases, a barrier material, i.e., a material having a relatively low fluid permeability and thus providing a relatively high level of liquid and gas retention to the cushioning element, can be used alone or in combination with conventional polymeric materials. Thus, the cushioning elements described herein (including the various structures forming the cushioning elements) can include, consist essentially of, or consist of a barrier material.

[0091] Outer bottom layer 110 of outsole 112 and attached friction elements 274A to 274A (e.g., such as...) Figure 8 The second support element 106 (as shown) can be formed of an elastic material configured to impart abrasion resistance and adhesion friction properties to the sole structure 101. The first support element 107 can be formed of a material with a harderness than the second support element 106. For example, the first support element 107 can be formed of a foam material having a first hardness, while the second support element 106 can be formed of a foam material having a second hardness less than the first hardness. The first support element may include a polymer material having a first hardness, such as a foamed polymer material and / or an unfoamed (e.g., solid resin) polymer material. The second support element 106 may include a polymer material having a second hardness. It is conceivable that the second support element 106 may include a second polymer material having a third hardness or another suitable foam material capable of providing the desired cushioning properties. Alternatively, the second support element 106 may include a solid polymer material having a different hardness than the selected foam material.

[0092] The following terms provide exemplary configurations of the aforementioned footwear products and sole structures.

[0093] Clause 1. A sole structure having an outer side and an inner side opposite to the outer side, the sole structure comprising: an outer bottom layer; a first support element including a first recess; a second support element coupled to the outer bottom layer and including a second recess; and a cushioning element disposed between the first support element and the second support element, the cushioning element including a plurality of recesses and a central pod, wherein a first subset of the plurality of recesses is disposed on the outer side, a second subset of the plurality of recesses is disposed on the inner side, and a rear recess of the plurality of recesses extends from the outer side to the inner side, each of the first subset, the second subset, and the rear recess being separated from the central pod by a ventral region, wherein the plurality of recesses are at least partially surrounded by the first recess and the second recess.

[0094] Clause 2. The sole structure according to Clause 1, wherein the cushioning element is a fluid-filled bladder.

[0095] Clause 3. The sole structure according to Clause 1, wherein the fluid inside the cushioning element is under ambient pressure.

[0096] Clause 4. The sole structure according to Clause 1, wherein each of the plurality of recesses is fluidly separated from another of the plurality of recesses.

[0097] Clause 5. The sole structure of Clause 1, wherein the central pod is fluidly separated from each of the plurality of pockets.

[0098] Clause 6. The sole structure of Clause 1, wherein the first subset includes an anterior lateral pocket and a central lateral pocket.

[0099] Clause 7. The sole structure of Clause 6, wherein the second subset includes an anterior medial pocket and a central medial pocket.

[0100] Clause 8. The sole structure of Clause 7, wherein the posterior pocket is disposed at a posterior portion of the cushioning element.

[0101] Clause 9. The sole structure of Clause 8, wherein the central lateral pocket is disposed between the posterior pocket and the anterior lateral pocket.

[0102] Clause 10. The sole structure of Clause 9, wherein the central medial pocket is disposed between the posterior pocket and the anterior medial pocket.

[0103] Clause 11. The sole structure of Clause 10, wherein the central pod is disposed between the posterior pocket, the central medial pocket, the central lateral pocket, the anterior medial pocket, and the anterior lateral pocket.

[0104] Clause 12. The sole structure of Clause 8, wherein the central medial pocket includes a size that is greater than the anterior medial pocket.

[0105] Clause 13. The sole structure of Clause 8, wherein the central lateral pocket includes a size that is greater than the anterior lateral pocket.

[0106] Clause 14. The sole structure of Clause 1, wherein the cushioning element includes a top surface and a bottom surface opposite the top surface, the bottom surface including a plurality of channels.

[0107] Clause 15. The sole structure of Clause 14, wherein the first support element is coupled to the top surface of the cushioning element and the second support element is coupled to the bottom surface of the cushioning element.

[0108] Clause 16. The sole structure of Clause 1, wherein the second support element coupled to an outsole forms at least a portion of a ground-engaging surface of the sole structure.

[0109] Clause 17. The sole structure of Clause 1, wherein a top surface of the outsole layer is in direct contact with a bottom surface of the first support element at an anterior location of the sole structure.

[0110] Clause 18. An article of footwear, comprising: a sole structure according to Clause 1 ; and an upper coupled to the sole structure.

[0111] Clause 19. A cushioning element for an article of footwear, the cushioning element comprising: a plurality of pockets, the plurality of pockets comprising a lateral pocket, a medial pocket, and a rear pocket; a central pod disposed between the lateral pocket, the medial pocket, and the rear pocket; a web region extending between the central pod and the plurality of pockets; and a plurality of channels extending between the central pod and each of the plurality of pockets.

[0112] Clause 20. The cushioning element according to Clause 19, wherein the lateral pocket comprises a forward-most lateral pocket and a central-most lateral pocket, each of the forward-most lateral pocket and the central-most lateral pocket disposed on a lateral side of the cushioning element.

[0113] Clause 21. The cushioning element according to Clause 20, wherein the medial pocket comprises a forward-most medial pocket and a central-most medial pocket, each of the forward-most medial pocket and the central-most medial pocket disposed on a medial side of the cushioning element.

[0114] Clause 22. The cushioning element according to Clause 21, wherein the rear pocket extends from the lateral side to the medial side.

[0115] Clause 23. The cushioning element according to Clause 22, wherein the rear pocket is spaced apart from the central pod by a first distance.

[0116] Clause 24. The cushioning element according to Clause 23, wherein the central-most medial pocket is spaced apart from the central pod by the first distance.

[0117] Clause 25. The cushioning element according to Clause 24, wherein the central-most lateral pocket is spaced apart from the central pod by a second distance.

[0118] Clause 26. The cushioning element according to Clause 25, wherein the forward-most medial pocket is spaced apart from the central pod by a third distance.

[0119] Clause 27. The cushioning element according to Clause 26, wherein the forward-most lateral pocket is spaced apart from the central pod by a fourth distance.

[0120] Clause 28. The cushioning element according to Clause 21, wherein the rear pocket is spaced apart from the central-most medial pocket by a first length.

[0121] Clause 29. The cushioning element of Clause 20, wherein the rear pocket is spaced apart from the most central lateral pocket by a second length.

[0122] Clause 30. The cushioning element of Clause 21, wherein the most central medial pocket is spaced apart from the most anterior medial pocket by a third length.

[0123] Clause 31. The cushioning element of Clause 20, wherein the most central lateral pocket is spaced apart from the most anterior lateral pocket by a fourth length.

[0124] Clause 32. The cushioning element of Clause 19, wherein each of the plurality of pockets is fluidly isolated from one another, and wherein the central pod is fluidly isolated from each of the plurality of pockets.

[0125] Clause 33. An article of footwear incorporating the sole structure of Clause 19.

[0126] Clause 34. A cushioning element having a lateral side and a medial side opposite the lateral side, the cushioning element comprising: a plurality of pockets including a lateral pocket, a medial pocket, and a rear pocket, wherein the rear pocket extends from the lateral side to the medial side; a central pod disposed between the lateral pocket, the medial pocket, and the rear pocket, wherein a fluid within the central pod is at ambient pressure; and a web region extending between the central pod and the plurality of pockets.

[0127] Clause 35. The cushioning element of Clause 34, wherein the rear pocket includes a depression disposed proximate the web region.

[0128] Clause 36. The cushioning element of Clause 34, wherein a first pocket of the plurality of pockets includes a medial side and a lateral side, a second pocket includes a medial side, a third pocket includes a lateral side, a fourth pocket includes a medial side, and a fifth pocket includes a lateral side.

[0129] Clause 37. The cushioning element of Clause 36, wherein each medial side and each lateral side includes a center point, and wherein the first pocket includes a width measured between the center point of the medial side and the center point of the lateral side.

[0130] Clause 38. The cushioning element of Clause 37, wherein a width of the second pocket is measured from the web region to the center point of the medial side, a width of the third pocket is measured from the web region to the center point of the lateral side, a width of the fourth pocket is measured from the web region to the center point of the medial side, and a width of the fifth pocket is measured from the web region to the center point of the lateral side.

[0131] Clause 39. An article of footwear comprising the cushioning element of Clause 34.

Claims

1. A sole structure having an outer side and an inner side opposite to the outer side, the sole structure comprising: Outer bottom layer; A first support element, the first support element including a first recess; A second support element is connected to the outer bottom layer and includes a second recess; as well as A cushioning element is disposed between a first support element and a second support element. The cushioning element includes a plurality of recesses and a central pod. A first subset of the recesses is disposed on the outer side, a second subset of the recesses is disposed on the inner side, and a rear recess of the plurality of recesses extends from the outer side to the inner side. Each of the first subset, the second subset, and the rear recess is separated from the central pod by a web region. The plurality of recesses are at least partially surrounded by the first recess and the second recess.

2. The sole structure according to claim 1, wherein the cushioning element is a fluid-filled bladder.

3. The sole structure according to claim 1, wherein the fluid inside the cushioning element is under ambient pressure.

4. The sole structure according to claim 1, wherein each of the plurality of recesses is fluidly separated from another recess of the plurality of recesses.

5. The sole structure of claim 1, wherein the central pod is fluidly separated from each of the plurality of recesses.

6. The sole structure according to claim 1, wherein the first subset includes a front lateral recess and a central lateral recess.

7. The sole structure according to claim 6, wherein the second subset includes a front medial recess and a central medial recess.

8. The sole structure according to claim 7, wherein the rear recess is located at the rear portion of the cushioning element.

9. The sole structure according to claim 8, wherein the central lateral recess is disposed between the rear recess and the front lateral recess.

10. The sole structure according to claim 9, wherein the central inner recess is disposed between the rear recess and the front inner recess.

11. The sole structure according to claim 10, wherein the central pod-shaped portion is disposed between the rear recess, the central inner recess, the central outer recess, the front inner recess, and the front outer recess.

12. The sole structure of claim 8, wherein the central inner recess includes a size larger than that of the front inner recess.

13. The sole structure according to claim 8, wherein the central lateral recess includes a size larger than that of the front lateral recess.

14. The sole structure of claim 1, wherein the cushioning element comprises a top surface and a bottom surface opposite the top surface, the bottom surface comprising a plurality of channels.

15. The sole structure of claim 14, wherein the first support element is coupled to the top surface of the cushioning element, and the second support element is coupled to the bottom surface of the cushioning element.

Images