Article of footwear

Abstract

An article of footwear having an upper, an outsole attached to the upper, and a midsole. The outsole includes a ground surface and an interior surface arranged on opposite sides. The midsole has a footbed and a bottom surface arranged on opposite sides. The bottom surface opposes the interior surface to define a cavity between the bottom surface and the interior surface. The article of footwear further includes a first series of protrusions extending from one of the interior surface and the bottom surface into the cavity in a first direction toward the other of the interior surface and the bottom surface. The article of footwear further includes a second series of protrusions extending from one of the interior surface and the bottom surface into the cavity in the first direction toward the other of the interior surface and the bottom surface. The article of footwear further includes an amount of particulate matter arranged within the cavity.

Description

[0001] This application is a divisional application of an application filed on September 23, 2016, with application number 201680062323.0 and invention name “Footwear and method for manufacturing footwear”.

[0002] CROSS-REFERENCE TO RELATED APPLICATIONS

[0003] No. 62 / 222,822, filed on September 24, 2015; No. 62 / 222,873, filed on September 24, 2015; No. 62 / 222,851, filed on September 24, 2015; No. 62 / 222,842, filed on September 24, 2015; No. 62 / 222,832, filed on September 24, 2015; and No. 62 / 222,816, filed on September 24, 2015, the disclosures of which are hereby incorporated by reference in their entireties. Technical Field

[0004] The present disclosure relates to articles of footwear having particulate foam in combination with other cushioning materials. Background Art

[0005] This section provides background information related to the present disclosure which is not necessarily prior art.

[0006] An article of footwear typically includes an upper and a sole structure. The upper can be formed from any suitable material to receive, secure, and support the foot on the sole structure. The upper can be used in conjunction with laces, straps, or other fasteners to adjust the fit of the upper around the foot. The bottom portion of the upper, adjacent to the bottom surface of the foot, is attached to the sole structure.

[0007] The sole structure typically includes a layered arrangement extending between the ground and the upper. One layer of the sole structure includes an outsole that provides wear resistance and traction with the ground. The outsole can be formed from rubber or other materials that impart durability and wear resistance and enhance traction with the ground. Another layer of the sole structure includes a midsole arranged between the outsole and the upper. The midsole provides cushioning for the foot and is typically formed at least in part from a polymer foam material that elastically compresses under applied loads to cushion the foot by reducing ground reaction forces. The midsole can define a bottom surface on the side opposite the outsole and a footbed on the opposite side, the contour of which can be shaped to conform to the contour of the bottom surface of the foot. The sole structure can also include a comfort-enhancing insole or sockliner located in a space near the bottom portion of the upper.

[0008] Midsoles using polymer foam materials are typically constructed as a single plate that compresses elastically under an applied load, such as during a walking or running motion. Typically, the design of a single plate of polymer foam focuses on balancing cushioning properties related to the softness and responsiveness of the plate when compressed under a gradient load. Providing a polymer foam that is too soft for cushioning will reduce the compressibility of the midsole and its ability to attenuate ground reaction forces after repeated compressions. Conversely, a polymer foam that is too hard and therefore very responsive will sacrifice softness, resulting in a loss of comfort. Although the density, hardness, energy return and material selection of different areas of a plate made from polymer foam can be varied to balance the softness and responsiveness of the plate as a whole, it is difficult to create a single plate of polymer foam that is loaded in a gradient manner from soft to responsive. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The drawings described herein are for illustrative purposes only of selected configurations and are not intended to limit the scope of the present disclosure.

[0010] Figure 1 is a top perspective view of an article of footwear according to the principles of the present disclosure;

[0011] Figure 2 for Figure 1 an exploded view of an article of footwear showing a protrusion extending from an inner surface of the outsole toward a bottom surface of the midsole;

[0012] Figure 3 To follow Figure 1 a cross-sectional view taken along line 3-3 of the outsole showing projections extending from the inner surface of the outsole toward the bottom surface of the midsole and particulate matter arranged at the inner surface to surround the base of the projections;

[0013] Figure 4 is a top perspective view of an article of footwear according to the principles of the present disclosure;

[0014] Figure 5 for Figure 4 an exploded view of an article of footwear showing a protrusion extending from a bottom surface of the midsole toward an inner surface of the outsole;

[0015] Figure 6 and Figure 7 To follow Figure 4 cross-sectional views taken along line 6-6 of FIG, each illustrating a first series of protrusions and a second series of protrusions extending from the bottom surface of the midsole toward the inner surface of the outsole and particulate matter disposed on the inner surface of the outsole;

[0016] Figure 8 is a top perspective view of an article of footwear according to the principles of the present disclosure;

[0017] Figure 9 for Figure 8an exploded view of an article of footwear illustrating projections extending from an inner surface of an outsole, the inner surface of the outsole defining honeycomb cells for receiving a quantity of particulate matter;

[0018] Figure 10 To follow Figure 8 a cross-sectional view taken along line 10-10 of FIG. 1 showing a protrusion extending from the inner surface of the outsole toward the bottom surface of the midsole and terminating at a point of contact with the bottom surface;

[0019] Figure 11 For the Figure 10 a partial cross-sectional view taken along line 10-10 of FIG. 1 showing a protrusion extending from the inner surface of the outsole toward the bottom surface of the midsole;

[0020] Figure 12 is a bottom perspective view of an article of footwear according to the principles of the present disclosure;

[0021] Figure 13 for Figure 12 an exploded view of an article of footwear showing particulate matter stored within a housing disposed between an outsole and a midsole of the sole structure;

[0022] Figure 14 To follow Figure 12 a cross-sectional view taken along line 14-14 of FIG. 1 showing particulate matter stored in a housing disposed between an outsole and a midsole of the sole structure when the sole structure is at rest;

[0023] Figure 15 To follow Figure 12 a cross-sectional view taken along line 14-14 of FIG. 1 showing particulate matter lodged in a housing disposed between an outsole and a midsole of the sole structure when the sole structure is flexed;

[0024] Figure 16 is a bottom perspective view of an article of footwear according to the principles of the present disclosure;

[0025] Figure 17 for Figure 16 The footwear items along Figure 16 a cross-sectional view of the heel region taken along line 17-17 illustrating particulate matter deposited within the cavity of the sole structure;

[0026] Figure 18 for Figure 16 The footwear items along Figure 16 a partial cross-sectional view of a portion of the forefoot region taken along line 18-18 illustrating particulate matter deposited within a cavity of the sole structure;

[0027] Figure 19 is a bottom perspective view of an article of footwear according to the principles of the present disclosure;

[0028] Figure 20 for Figure 19 an exploded view of an article of footwear illustrating a protruding plate extending from an inner surface of the outsole toward a bottom surface of the midsole;

[0029] Figure 21 for Figure 19 The footwear items along Figure 19 a partial cross-sectional view taken along line 21-21 of the embodiment of the present invention, showing a protruding plate extending from the inner surface of the outsole toward the bottom surface of the midsole and particulate matter stored in an aperture extending through the protruding plate;

[0030] Figure 22 is a top perspective view of an article of footwear according to the principles of the present disclosure;

[0031] Figure 23 for Figure 22 an exploded view of an article of footwear showing projections extending from an inner surface of the outsole toward a bottom surface of the midsole and a tufted casing containing particulate matter disposed on the projections;

[0032] Figure 24 To follow Figure 22 a partial cross-sectional view taken along line 24-24 showing projections extending from the inner surface of the outsole toward the bottom surface of the midsole and a tufted shell containing particulate matter disposed on the projections;

[0033] Figure 25 is a top perspective view of an article of footwear according to the principles of the present disclosure.

[0034] Figure 26 for Figure 25 an exploded view of an article of footwear showing a tufted shell containing a particulate matter and a cushioning layer, wherein the cushioning layer is received within the cavity and positioned on projections extending from an inner surface of the outsole toward a bottom surface of the midsole;

[0035] Figure 27 To follow Figure 25 a cross-sectional view taken along line 27-27 of the embodiment of the present invention, showing a tufted shell containing a particulate material and a cushioning layer, wherein the cushioning layer is received within the cavity and positioned on projections extending from the inner surface of the outsole toward the bottom surface of the midsole;

[0036] Figure 28 is a top perspective view of an article of footwear according to the principles of the present disclosure;

[0037] Figure 29 To follow Figure 28 a cross-sectional view taken along line 29-29 illustrating a sole structure including a cushioning layer disposed on an inner surface of the outsole and a particulate material disposed between the cushioning layer and a bottom surface of the midsole;

[0038] Figure 30 is a top perspective view of an article of footwear according to the principles of the present disclosure;

[0039] Figure 31 To follow Figure 30 a cross-sectional view taken along line 31-31 of FIG, illustrating a sole structure including a fluid-filled chamber disposed on an inner surface of the outsole and a particulate matter disposed between the fluid-filled chamber and a bottom surface of the midsole;

[0040] Figure 32 is a top perspective view of an article of footwear according to the principles of the present disclosure;

[0041] Figure 33 for Figure 32 a cross-sectional view taken along line 33-33 illustrating a sole structure including a fluid-filled chamber disposed on an inner surface of the outsole and a particulate matter disposed between the fluid-filled chamber and a bottom surface of the midsole;

[0042] Figure 34 is a top perspective view of an article of footwear according to the principles of the present disclosure;

[0043] Figure 35 for Figure 34 a partial cross-sectional view taken along line 35-35 showing an inner surface of the outsole defining a series of top ridges extending into the cavity toward the bottom surface of the midsole and a tufted shell containing particulate matter disposed on the top ridges of the outsole;

[0044] Figure 36 is a top perspective view of an article of footwear according to the principles of the present disclosure; and

[0045] Figure 37 for Figure 36 A partial cross-sectional view taken along line 37-37 shows a tufted shell containing particulate matter and a cushioning layer received within the cavity and positioned on a top ridge defined by the inner surface of the outsole and extending into the cavity toward the bottom surface of the midsole.

[0046] Corresponding reference characters indicate corresponding parts throughout the several views of the drawings. DETAILED DESCRIPTION

[0047] The exemplary configuration will now be described more fully with reference to the accompanying drawings. The exemplary configuration is provided so that the present disclosure will be thorough and the exemplary configuration fully conveys the scope of the present disclosure to those of ordinary skill in the art. Specific details such as examples of specific components, devices, and methods are set forth to provide a thorough understanding of the configuration of the present disclosure. It will be apparent to those of ordinary skill in the art that the specific details need not be employed and that the exemplary configuration can be implemented in many different forms, and that the specific details and exemplary configuration should not be construed as limiting the scope of the present disclosure.

[0048] The terms used herein are only used to describe specific exemplary configurations and are not intended to be restrictive. As used herein, the singular forms "one", "an" and "the" may also be intended to include plural forms, unless the context clearly indicates otherwise. The terms "comprise", "include", "includes" and "have" are inclusive and therefore indicate the presence of features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts and / or groups thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring completion in the particular order discussed or described, unless specifically indicated as the order of completion. Additional steps or alternative steps may be adopted.

[0049] When an element or layer is referred to as being "on," "engaged to," "connected to," "attached to," or "coupled to" another element or layer, the element or layer may be directly on, engaged, connected, attached, or coupled to the other element or layer, or there may be intermediate elements or intermediate layers. 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, there may be no intermediate elements or intermediate layers. Other words used to describe the relationship between elements (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.) should be understood in the same manner. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0050] The terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers, and / or sections. These elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may only be used to distinguish one element, component, region, layer, or section from another region, layer, or section. Terms such as "first," "second," and other numerical terms do not imply a sequence or order unless the context clearly indicates otherwise. Therefore, the first element, component, region, layer, or section discussed below can be referred to as a second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments.

[0051] One aspect of the present disclosure includes an article of footwear comprising an upper and an outsole attached to the upper. A ground contact surface and an inner surface are disposed on opposite sides of the outsole. The midsole of the article of footwear comprises a footbed and a bottom surface disposed on opposite sides of the midsole. The bottom surface of the midsole opposes the inner surface of the outsole to define a cavity between the bottom surface of the midsole and the inner surface of the outsole. A quantity of particulate matter is disposed within the cavity. The article of footwear further comprises a first series of protrusions and a second series of protrusions, each of the first series of protrusions and the second series of protrusions extending from one of the inner surface and the bottom surface in a first direction toward the other of the inner surface and the bottom surface into the cavity. The first series of protrusions is spaced apart from the other of the inner surface and the bottom surface. The second series of protrusions has a height different from that of the first series of protrusions and is spaced apart from the other of the inner surface and the bottom surface.

[0052] In some examples, as the first series of protrusions and the second series of protrusions extend from the inner surface of the outsole into the cavity, a quantity of particulate matter is arranged around the circumference of the base of the first series of protrusions and around the base of the second series of protrusions. Either or both of the first series of protrusions and the second series of protrusions may include a cross-sectional area that decreases in the first direction.

[0053] In some embodiments, the first series of protrusions and the second series of protrusions include a continuously tapered outer surface. The tapered outer surface may terminate at a rounded distal end of each protrusion opposite the other of the inner surface and the outer surface. The first series of protrusions may be arranged near the heel portion of the outsole, while the second series of protrusions may be arranged near the forefoot portion of the outsole. Alternatively, the first series of protrusions may extend further from one of the inner surface and the bottom surface than the second series of protrusions. Alternatively, the first series of protrusions and the second series of protrusions may be separated from each other by a space arranged near the midfoot portion of the outsole.

[0054] In some examples, the particulate matter disposed within the cavity comprises foam beads having substantially the same size and shape or at least one of different sizes and different shapes. In these examples, the foam beads may comprise a substantially spherical shape.

[0055] Another aspect of the present disclosure includes an article of footwear comprising an upper and an outsole attached to the upper. The outsole has a ground contact surface and an inner surface disposed on opposite sides thereof. The midsole of the article of footwear comprises a footbed disposed on opposite sides thereof and a bottom surface. The inner surface of the outsole comprises a first series of protrusions and a second series of protrusions, each of the first series of protrusions and the second series of protrusions extending toward the upper and having different heights. The bottom surface of the midsole opposes the inner surface of the outsole to define a cavity between the bottom surface of the midsole and the inner surface of the outsole. A quantity of particulate matter is disposed within the cavity. Additionally, the bottom surface is spaced apart from the first series of protrusions and the second series of protrusions.

[0056] In some embodiments, the cross-sectional area of ​​the first series of protrusions decreases in a direction extending from the outsole toward the midsole. Alternatively, the cross-sectional area of ​​the second series of protrusions may decrease in a direction extending from the outsole toward the midsole. In some examples, the first series of protrusions and the second series of protrusions include a continuously tapered outer surface. In these examples, the tapered outer surface may terminate at a rounded distal end of each protrusion opposite the bottom surface of the midsole. In some cases, the first series of protrusions are arranged near the heel portion of the outsole, while the second series of protrusions are arranged near the forefoot portion of the outsole. In these cases, the first series of protrusions may optionally extend further from the inner surface of the outsole than the second series of protrusions. Alternatively, the first series of protrusions and the second series of protrusions may be separated from each other by a space arranged near the midfoot portion of the outsole.

[0057] In some examples, the particulate matter disposed within the cavity comprises foam beads having substantially the same size and shape or at least one of different sizes and different shapes. In these examples, the foam beads may comprise a substantially spherical shape.

[0058] In another aspect of the present disclosure, an article of footwear includes an upper and a midsole, the midsole having a footbed and a bottom surface disposed on a side of the midsole opposite the footbed. The bottom surface of the midsole includes a first series of protrusions extending away from the upper. The bottom surface also includes a second series of protrusions extending away from the upper and having a height different from that of the first series of protrusions. The article of footwear also includes an outsole attached to the upper and including a ground contact surface disposed on an opposite side of the outsole and an inner surface. The inner surface opposes the bottom surface of the midsole. The inner surface of the outsole and the bottom surface of the midsole cooperate to define a cavity between the inner surface of the outsole and the bottom surface of the midsole. A quantity of particulate material is disposed within the cavity, and the inner surface of the outsole is spaced apart from the first and second series of protrusions.

[0059] In some embodiments, the cross-sectional area of ​​the first series of protrusions decreases in a direction extending from the midsole toward the outsole. Additionally, the cross-sectional area of ​​the first series of protrusions may decrease in a direction extending from the midsole toward the outsole. In some examples, the first series of protrusions and the second series of protrusions include a continuously tapered outer surface. In these examples, the tapered outer surface may terminate at a circular distal end of each protrusion opposite the inner surface of the outsole. The first series of protrusions may optionally be opposite the heel portion of the outsole, while the second series of protrusions may optionally be opposite the forefoot portion of the outsole. In one configuration, the first series of protrusions extend further from the bottom surface of the midsole than the second series of protrusions. In some cases, the first series of protrusions and the second series of protrusions may be separated from each other by a space arranged near the midfoot portion of the outsole.

[0060] In some examples, the particulate matter disposed within the cavity comprises foam beads having substantially the same size and shape or at least one of different sizes and different shapes. In these examples, the foam beads may comprise a substantially spherical shape.

[0061] Another aspect of the present disclosure provides a method for manufacturing an article of footwear. The method includes: providing a cavity between a footbed and an outsole; and providing one of the footbed and the outsole with a first series of protrusions, the first series of protrusions extending into the cavity in a first direction toward the other of the footbed and the outsole. The first series of protrusions is spaced apart from the other of the footbed and the outsole. The method also includes providing one of the footbed and the outsole with a second series of protrusions, the second series of protrusions extending into the cavity in the first direction toward the other of the footbed and the outsole. The second series of protrusions is spaced apart from the other of the footbed and the outsole. The second series of protrusions has a height different from that of the first series of protrusions. The method also includes providing the cavity with a quantity of granular material.

[0062] In some examples, the method includes providing the outsole with a first series of protrusions and a second series of protrusions. In these examples, a quantity of particulate matter is provided around bases of the first series of protrusions and around bases of the second series of protrusions.

[0063] In some embodiments, the method includes providing one of the footbed and the outsole with a first series of protrusions by providing the first series of protrusions with a cross-sectional area that decreases in a direction toward the other of the footbed and the outsole. Alternatively, the method includes providing one of the footbed and the outsole with a first series of protrusions and a second series of protrusions by providing the first series of protrusions and the second series of protrusions with a continuously tapered outer surface. The method may also include providing one of the footbed and the outsole with a first series of protrusions and a second series of protrusions by providing a space between the first series of protrusions and the second series of protrusions near a midfoot portion of the outsole.

[0064] In some examples, the method includes providing one of a footbed and an outsole with a first series of protrusions and a second series of protrusions by providing the first series of protrusions proximate a heel portion of the outsole and providing the second series of protrusions proximate a forefoot portion of the outsole. In these examples, the method may also include extending the first series of protrusions further from one of the footbed and the outsole than the second series of protrusions.

[0065] In some examples, providing the cavity with a particulate material includes providing the cavity with foam beads. Providing the cavity with a particulate material may include providing the cavity with a quantity of foam beads having a substantially spherical cross-section. Additionally or alternatively, providing the cavity with a foam bead may include providing the cavity with a quantity of foam beads having at least one of the same size and shape or different sizes and different shapes.

[0066] Reference Figures 1 to 3 In some embodiments, an article of footwear 10 includes an upper 100 and a sole structure 200 attached to the upper 100. The article of footwear 10 can be divided into one or more portions. These portions can include a forefoot portion 12, a midfoot portion 14, and a heel portion 16. The forefoot portion 12 can correspond to the toes and the joints connecting the metatarsal bones to the phalanges of the foot. The midfoot portion 14 can correspond to the arch area of ​​the foot, and the heel portion 16 can correspond to the back portion of the foot, including the calcaneus. The shoe 10 can include a lateral side 18 and a medial side 20, which correspond to opposite sides of the shoe 10 and extend through portions 12, 14, and 16, respectively.

[0067] Upper 100 includes an inner surface defining an interior space 102 that receives and secures a foot for supporting the foot on sole structure 200. An ankle opening 104 in heel portion 16 can provide access to interior space 102. For example, ankle opening 104 can receive a foot to secure the foot within space 102 and facilitate entry and removal of the foot from interior space 102. In some examples, one or more fasteners 106 extend along upper 100 to adjust the fit of interior space 102 around the foot while accommodating entry and removal of the foot from interior space 102. Upper 100 can include apertures such as eyelets and / or other engaging features such as fabric loops or mesh loops that receive fasteners 106. Fasteners 106 can include laces, straps, cords, hooks and loops, and any other suitable type of fastener.

[0068] Upper 100 may include a tongue 110 extending between interior void 102 and fastener 106. Upper 100 may be formed from one or more materials sewn together or bonded together to form interior void 102. Suitable upper materials may include, but are not limited to, textiles, foam, leather, and synthetic leather. The materials may be selected and positioned to provide durability, breathability, wear resistance, flexibility, and comfort to the foot when disposed within interior void 102.

[0069] In some embodiments, sole structure 200 includes an outsole 210 and a midsole 220 arranged in a layered configuration. Outsole 210 is generally positioned on the bottom surface of article of footwear 10 to allow outsole 210 to contact the ground during use. Midsole 220 is positioned between upper 100 and outsole 210 and provides a degree of cushioning to the foot during use of article of footwear 10. In some examples, sole structure 200 may also incorporate additional layers, such as an insole or sockliner, which may be positioned within interior space 102 of upper 100 to accommodate the plantar surface of the foot and enhance the comfort of shoe 10. In some embodiments, sidewall 230 separates outsole 210 and midsole 220 to define cavity 240 between them. In some embodiments, protrusion 300 extends into cavity 240 to provide cushioning to the foot and control the migration of particulate matter 350 deposited in cavity 240 during use of shoe 10. The protrusions 300 and the particulate material 350 disposed within the cavity 240 can work together to enhance the functionality and cushioning properties provided by conventional midsoles. For example, one or more polymer foam materials, such as ethylene vinyl acetate or polyurethane, can form the protrusions 300 to provide elastic compressibility under applied loads to reduce ground reaction forces. The particulate material 350 can include foam beads having a generally spherical shape. In some examples, the particulate material 350 includes foam beads having approximately the same size and shape. In other examples, the particulate material 350 includes foam beads having at least one of different sizes and different shapes.

[0070] In some examples, outsole 210 includes a ground-engaging surface 212 and an opposing inner surface 214. Outsole 210 can be attached to upper 100. In some examples, sidewall 230 extends from a perimeter of outsole 210 and is attached to midsole 220 or upper 100. Figure 1 The example of FIG. 1 shows an outsole 210 attached to the upper 100 proximate the end of the forefoot portion 12. The outsole 210 is generally configured to provide wear resistance and traction with the ground. The outsole 210 can be formed from one or more materials that impart durability and wear resistance and enhance traction with the ground. For example, rubber can form at least a portion of the outsole 210.

[0071] The midsole 220 may include a bottom surface 222 and a footbed 224 disposed on a side of the midsole 220 opposite the bottom surface 222. Stitches 226 or adhesive may secure the midsole 220 to the upper 100. The footbed 224 may be shaped to conform to the contours of a bottom surface of the foot (e.g., the plantar surface). In some embodiments, an insole or sockliner may be disposed on the footbed 224, positioned below at least a portion of the midfoot within the interior space 102 of the upper 100. The bottom surface 222 may oppose the inner surface 214 of the outsole 210 to define a cavity 240 between the bottom surface 222 and the inner surface 214 of the outsole 210.

[0072] Midsole 220 can be formed from a flexible material that allows it to conform to and interact with the granular material 350 located in cavity 240. Thus, the flexible midsole 220 can correspond to a flexible cushion that allows the granular material 350 located in cavity 240 to interact with the contours of the bottom surface of the foot during gradient loading of sole structure 200. Providing midsole 220 with the ability to flex during use of article of footwear 10 allows it to conform to the surface contours of the bottom of the foot when compressed in response to ground reaction forces, which in turn allows the foot to experience the soft cushioning provided by the compressibility of granular material 350. In some examples, sidewall 230 can define the outer perimeter of cavity 240 and the depth of cavity 240 based on the length of the separation between bottom surface 222 and inner surface 214. One or more polymer foam materials can form sidewall 230 to provide elastic compressibility under applied loads to attenuate ground reaction forces.

[0073] Figure 2 An exploded view of article of footwear 10 is provided, illustrating protrusions 300 extending in a direction from inner surface 214 of outsole 210 toward bottom surface 222 of midsole 220. In this embodiment, a quantity of particulate matter 350 (e.g., foam beads) stored in cavity 240 can be arranged around each protrusion 300 near inner surface 214 of outsole 210. In some examples, protrusions 300 are arranged in repeating rows, with each protrusion 300 equally spaced from adjacent protrusions 300. In other examples, protrusions 300 are arranged in alternating, repeating rows to restrict movement or migration of particulate matter 300.

[0074] Reference Figure 3 ,along Figure 1 The cross-sectional view taken along line 3-3 shows the protrusion 300 extending in a direction from the inner surface 214 of the outsole 210 toward the bottom surface 222 of the midsole 220. Figure 3In the example shown, arrow 302 indicates a direction from outsole 210 toward midsole 220. In some embodiments, protrusions 300 include a first series of protrusions 310 and a second series of protrusions 320, each of which extends in a first direction from inner surface 214 (outsole 210) toward bottom surface 222 (midsole 222). The first series of protrusions 310 can be arranged near heel portion 16 of outsole 210, while the second series of protrusions 320 can be arranged near forefoot portion 12 of outsole 16. In some examples, the first series of protrusions 310 and the second series of protrusions 320 are separated by a space 330. Figure 3 , the example of the outsole 210 shows a space 330 located at or near the midfoot portion 14 of the outsole 210 to separate a first series of protrusions 310 arranged near the heel portion 16 from a second series of protrusions 320 arranged near the forefoot portion 12. The first series of protrusions 310 may include corresponding bases 312 and corresponding rounded distal ends 314. Similarly, the second series of protrusions 310 may include corresponding bases 322 and corresponding rounded distal ends 324. A quantity of particulate matter 350 (e.g., foam beads) may be dispersed and arranged around the corresponding bases 312, 322 of the first and second series of protrusions 310, 320, respectively.

[0075] In some embodiments, each protrusion of the first series of protrusions 310 includes a cross-sectional area that decreases as the protrusion 310 extends from the base 312 toward the rounded distal end 314 (e.g., the cross-sectional area of ​​the protrusion 310 decreases in a first direction). Additionally or alternatively, each protrusion of the second series of protrusions 320 may include a cross-sectional area that decreases as the protrusion 320 extends from the base 322 toward the rounded distal end 324 (e.g., the cross-sectional area of ​​the protrusion 320 decreases in a first direction). In some examples, the first and second series of protrusions 310, 320 include a continuously tapered outer surface extending between the base 312, 322 and the distal end 314, 324. In the example shown, the tapered outer surface of each protrusion 310, 320 terminates at its corresponding rounded distal end 314, 324.

[0076] Figure 2 and Figure 3The tapered outer surfaces of the protrusions 310, 320 are shown, defining recesses between adjacent protrusions 310, 320 for receiving or containing particulate matter 350. The distal ends 314, 324 may oppose the bottom surface 222 of the midsole 220. The tapered shape and reduced cross-sectional area of ​​the protrusions 310, 320 may restrict the migration or movement of particulate matter 350 located near the base portions 312, 322, while allowing some movement or migration of particulate matter 350 located near the distal ends 314, 324. Conversely, the spaces 330 may restrict all migration of particulate matter 350 located between the forefoot portion 12 and the heel portion 16 of the sole structure 200.

[0077] In addition to controlling the migration of particulate matter 350, the tapered shape and reduced cross-sectional area of ​​protrusions 300 also control the compressibility of protrusions 300. Controlling the compressibility of protrusions 300 determines the responsiveness of cushioning at the corresponding forefoot portion 12 and heel portion 16 (and / or midfoot portion 14). For example, because the cross-sectional area of ​​protrusions 300 is relatively small at the tip, a smaller load applied to the tip or distal end 314, 324 of protrusion 300 more easily compresses the protrusion 300 at the tip. The remainder of the protrusion 300 is only compressed when sufficient load is applied to each protrusion 300 to compress the wider base 312, 322 of the protrusion 300. Thus, protrusions 300 provide a gradient cushioning effect that increases in compressibility as the applied load increases. If the particulate matter 350 is disposed only near the bases 312, 322 of the projections, the particulate matter 350 will only increase the cushioning effect when sufficient load is applied to the projections 300 to compress the projections by a predetermined amount (i.e., such that the projections 300 are compressed in a direction opposite to the direction 302). Conversely, if a sufficient amount of particulate matter 350 is disposed within the cavity 240 such that the particulate matter 350 extends between the distal ends 314, 324 and the bottom surface 222 of the midsole 220, any force that causes the midsole 220 to flex will cause compressibility of the particulate matter within the cavity 240. Such force may cause the particulate matter 350 to migrate or move relative to and within the cavity 240, and thus, such force may cause the applied load to be transferred to the distal end 314 of the projection 300.

[0078] In some embodiments, the protrusions 310, 320 extending from the outsole 210 (e.g., the inner surface 214) are spaced apart from the midsole 220 (e.g., the bottom surface 222). In other words, a gap may exist between the bottom surface 222 of the midsole 220 and the distal ends 314, 324 opposite the bottom surface 222. In these embodiments, when the sole structure 200 is not subjected to an applied load and is at rest, the protrusions 310, 320 are spaced apart from the midsole 220. However, compression of the sole structure 200 may cause the bottom surface 222 of the midsole 220 to translate toward the outsole 210 and come into contact with one or more of the protrusions 310, 320 in cooperation with the particulate matter 350. In other embodiments, the protrusions 310, 320 remain in contact with the bottom surface 222 of the midsole 220 even when the sole structure 200 is not subjected to a load. In other words, distal ends 314, 324 are opposed to and in contact with bottom surface 222 of midsole 220. In some examples, when sole structure 200 is at rest, a portion of either distal end 314, 324 may contact bottom surface 222, while the remainder of distal end 314, 324 may be spaced apart from bottom surface 222. The compressibility of protrusions 310, 320 can provide responsive cushioning.

[0079] The distance between the inner surface 214 of the outsole 210 and the distal end 314 defines the height of the first series of protrusions 310. Similarly, the distance between the inner surface 214 and the distal end 324 defines the height of the second series of protrusions 310. Alternatively, the height of the protrusions 310, 320 can be derived based on the distance between the distal ends 314, 324 and the corresponding bases 312, 322. In some examples, the height of the first series of protrusions 310 is different from the height of the second series of protrusions 320. For example, Figure 3 The first series of protrusions 310 are shown as having a greater height (e.g., the corresponding distal ends 314 extend further from the inner surface 214) than the second series of protrusions 320. The height (and taper) of the protrusions 300 enables the ability to disperse the particulate matter 350. For example, because the first series of protrusions 310 extend further from the inner surface 214 (e.g., a greater height) than the second series of protrusions 320, the heel portion 16 allows a greater amount of particulate matter 350 to be disposed at the base 312 rather than in the forefoot portion 12. Although the examples herein illustrate a uniform height for each protrusion in the first series of protrusions 310 and a uniform corresponding height for each protrusion in the second series of protrusions 320, in some configurations, the height of individual protrusions in either series of protrusions 310, 320 may vary.

[0080] Figures 1 to 3The example of FIG. 2 shows that the geometry (e.g., height, taper, cross-sectional area) and arrangement of the first and second protrusions 310, 320 extending into the cavity 240 achieves dispersion of the particulate material 350 and achieves a shift in cushioning from soft to responsive during gradient loading of the insole structure 200, such as during walking or running motions. For example, due to the initial impact of ground reaction forces occurring at the heel portion 16, it may be more desirable to increase the level of soft cushioning at the heel portion 16. Thus, by extending the first series of protrusions 310 further from the inner surface 214, a higher proportion of particulate material 350 may be present at the heel portion 16. In this example, a certain amount of particulate material 350 may provide a soft level of cushioning during the initial impact of the ground reaction force, while the compressibility of the protrusions 310, 320 may occur after the initial impact to provide responsive cushioning.

[0081] Reference Figures 4 to 7 In some embodiments, an article of footwear 10a includes an upper 100 and a sole structure 200a attached to the upper 100. Given that the components associated with article of footwear 10 are generally similar in structure and function to those of article of footwear 10a, identical reference numerals are used below and in the accompanying drawings to identify identical components, while identical reference numerals with letter extensions are used to identify those components that have been modified. Sole structure 200a may include an outsole 210a and a midsole 220a arranged in a layered configuration and defining a cavity 240a therebetween. Outsole 210a includes an inner surface 214a disposed on a side of outsole 210a opposite ground-contacting surface 212. Midsole 220a includes a bottom surface 222a disposed on a side of midsole 220a opposite footbed 224. The bottom surface 222a is opposed to the inner surface 214a to define a cavity 240a therebetween. The sidewall 230 may separate the bottom surface 222a and the inner surface 214a to define a depth of the cavity 240a.

[0082] In some embodiments, the protrusion 300a extends into the cavity 240a to provide cushioning for the foot and to control the migration of particulate matter 350 stored in the cavity 240a during use of the shoe 10a. The protrusion 300a may be formed of Figures 1 to 3 The protrusions 300 are formed of one or more polymer foam materials to provide elastic compressibility under applied loads to attenuate ground reaction forces. Figure 5An exploded view of the article of footwear 10a is provided, showing protrusions 300a extending in a direction from the bottom surface 222a of the midsole 220a toward the inner surface 214a of the outsole 210a. In this embodiment, a certain number of particulate matter (e.g., foam beads) can be arranged and laid on the inner surface 214a of the outsole 210a to be stored within the cavity 240a around each protrusion 300a extending from the bottom surface 222a of the midsole 220a. In some examples, the protrusions 300a are arranged in repeating rows and each protrusion 300a is spaced equidistant from adjacent protrusions 300a. In other examples, the protrusions 300a are arranged in alternating repeating rows to limit the movement or migration of the particulate matter 350. The midsole 220a can be formed of Figures 1 to 3 The flexible material of midsole 220 is formed to provide sufficient flexibility to midsole 220a. Providing flexibility to sole 220a allows particulate matter 350 stored in cavity 240a around protrusion 300a to provide cushioning for the foot when sole structure 220, and thus protrusion 300a, flexes during loading of sole structure 220a.

[0083] In some examples, one or more dividers 332a, 334a extend partially from inner surface 214a of outsole 210a into cavity 240. Dividers 332a, 334a extend between lateral side 18 and medial side 20 and include ends that terminate at sidewall 230. Dividers 332a, 334a can cooperate with one or more of protrusions 300a to limit or control the migration of particulate matter 350 between separated areas or between portions of cavity 240. In some examples, first divider 332a is positioned proximate to midfoot portion 14 of outsole 210a. Additionally or alternatively, in other examples, second divider 334a is positioned proximate to forefoot portion 12 of outsole 210a. Figure 5 Shown are a forefoot region 512 disposed to the right of the second divider 334a, a midfoot region 514 extending between the first divider 332a and the second divider 334a, and a heel region 516 disposed to the left of the first divider 332a.

[0084] Figure 6 and Figure 7 It is along Figure 4 The cross-sectional view is taken along line 6-6 of FIG and shows the protrusion 300a extending in a direction from the bottom surface 222a of the midsole 220a toward the inner surface 214a of the outsole 210. Figure 6 and Figure 7In the example shown in FIG. 1 , arrow 602 indicates a direction from midsole 220a toward outsole 210a. In some embodiments, protrusions 300a include a first series of protrusions 310a and a second series of protrusions 320a, each of which extends in the direction of arrow 602. The first series of protrusions 310a can be positioned near the heel portion 16 of outsole 210a, while the second series of protrusions 320a can be positioned near the forefoot portion 12 of outsole 210a.

[0085] In some examples, the first series of protrusions 310a is separated from the second series of protrusions 320a by a space 330a. Figure 6 , first divider 332a extends from inner surface 214a of outsole 210a into space 330a in the region of third series of protrusions 340a. Third series of protrusions 340a are disposed proximate midfoot portion 14 and extend in a direction from bottom surface 222a toward inner surface 214a. Third series of protrusions 340a can cooperate with first divider 332a within space 330a to restrict migration of particulate matter 350 within cavity 240a in a direction generally parallel to the longitudinal axis of article of footwear 10. Specifically, third series of protrusions 340a are disposed between lateral side 18 and medial side 20 and parallel to first divider 332a and can contact first divider 332a to substantially contain particulate matter 350 within corresponding region 514 or region 516 ( Figure 6 Alternatively, a gap may separate the protrusion 340a and the first divider 332a to allow the particulate matter 350 to cross the divider 332a (between the midfoot region 514 and the heel region 516) Figure 7 ) some migration occurs in the gap. Similarly, Figure 6 and Figure 7 Both illustrate the presence of gaps between the second divider 334a and the second series of protrusions 320a, thereby allowing some migration of particulate matter 350 between the forefoot region 512 and the midfoot region 514 of the sole structure 200a.

[0086] and Figure 3Similar to the protrusions 300 in the example of FIG, the first series of protrusions 310a may include corresponding bases 312a and corresponding rounded distal ends 314a. Similarly, the second series of protrusions 320a may include corresponding bases 322a and corresponding rounded distal ends 324a. In some embodiments, the first series of protrusions 310a include a cross-sectional area that decreases as the protrusion 310a extends from the base 312a toward the rounded distal end 314a (e.g., the cross-sectional area of ​​the protrusion 310a decreases in the direction of arrow 602). Additionally or alternatively, each protrusion of the second series of protrusions 320a may include a cross-sectional area that decreases as the protrusion 320a extends from the base 322a toward the rounded distal end 324a (e.g., the cross-sectional area of ​​the protrusion 320a decreases in the direction of arrow 602). In some examples, the first series of protrusions 310a and the second series of protrusions 320a include a continuously tapered outer surface extending between the base 312a, 322a and the distal end 314a, 324a. Figure 6 and Figure 7 The example of FIG20 shows that the tapered outer surface of each protrusion 310a, 320a terminates at its corresponding rounded distal end 314a, 324a. Distal ends 314a, 324a can be opposite inner surface 214a of outsole 210a. The tapered shape and reduced cross-sectional area of ​​protrusions 310a, 320a can limit the migration or movement of particulate matter 350 located near base portions 312a, 322a, while allowing some movement or migration of particulate matter 350 located near distal ends 314a, 324a through cavity 240. However, if third protrusion 340a contacts first divider 332a, which substantially forms a wall extending through article of footwear 10 between lateral side 18 and medial side 20, then space 330a can limit all migration of particulate matter 350 between forefoot portion 12 and heel portion 16 of sole structure 200a. This wall can be formed by providing third protrusions 340a with a sufficient width so that adjacent protrusions 340a contact each other in a direction extending generally perpendicular to the longitudinal axis of article of footwear 10 , thereby forming a continuous wall extending between lateral side 18 and medial side 20 .

[0087] In addition to controlling the migration of the particulate material 350, the tapered shape and reduced cross-sectional area can also control the compressibility of the protrusions 300a to determine the softness and responsiveness of the cushioning at the corresponding forefoot portion 12 and heel portion 16 (and / or midfoot portion 14). The tapered outer surfaces of the protrusions 310a, 320a define recesses between adjacent protrusions 310a, 320a for receiving or holding the particulate material 350. For example, referring to Figure 6, an amount of granular material 350 fills the recessed portion of cavity 240 between protrusions 310a, 320a and inner surface 214a. In these examples, distal ends 314a, 324a, bases 312, 322, and inner surface 214a cooperate to compress granular material 350 to attenuate ground reaction forces under gradient loading of sole structure 200a.

[0088] In other examples and with reference to Figure 7 ,and Figure 6 Compared to the examples shown in FIG. 3 , a smaller amount of particulate matter 350 is dispersed within cavity 240a, resulting in a lack of particulate matter 350 within portions of the recesses proximal to the corresponding bases 322a, 324a. In these examples, the particulate matter 350 compresses in response to ground reaction forces through engagement of the distal ends 314a, 324a with the inner surface 214a. As the particulate matter 350 compresses, the partially empty recesses between adjacent protrusions 310a, 320a allow the particulate matter 350 to displace and occupy previously unoccupied space within cavity 240a.

[0089] The protrusions 310a, 320a extending from the midsole 220a (e.g., bottom surface 222a) can be spaced apart from the outsole 210a (e.g., inner surface 214a). For example, when the sole structure 200a is not subjected to an applied load, a gap may exist between the inner surface 214a of the outsole 210a and the distal ends 314a, 324a opposite the inner surface 214a. However, when the corresponding protrusions 310a, 310b translate simultaneously with the midsole 220a when the particulate material 350 is subjected to gradient loading compression, one or more of the distal ends 314a, 324a can contact the inner surface 214a. Here, during gradient loading of the sole structure 200a, the protrusions 310a, 320a can be compressed while contacting the inner surface 214a. As discussed above, the compressibility of particulate material 350 can provide soft-type cushioning, while the compressibility of protrusions 300a can provide responsive cushioning. Thus, protrusions 300a and particulate material 350 can cooperate to provide gradient cushioning to article of footwear 10 that varies with applied load (i.e., the greater the load, the more protrusions 300a are compressed, and thus the shoe 10 performs more responsiveness). In some configurations, midsole 220a or a portion of midsole 220a can be removed to provide direct contact between the bottom surface of the foot and base 312a of the first series of protrusions 310a and / or base 322a of the second series of protrusions 320a. In these configurations, the flat surface of at least one of the bases 312a, 322a opposite the distal ends 314a, 324a and opposite the bottom surface of the foot can correspond to a flexible pad that allows the particulate material 350 stored in the cavity 240a to provide cushioning for the foot during gradient loading of the sole structure 200a as the protrusions 310a and / or 320a move toward the particulate material 350.

[0090] The distance between the bottom surface 222a of the midsole 220a and the distal end 314a defines the height of the first series of protrusions 310a, and the distance between the bottom surface 222a of the midsole 220a and the distal end 324a defines the height of the second series of protrusions 320a. Alternatively, the heights of the protrusions 310a, 320a can be obtained based on the distance between the distal ends 314a, 324a and the corresponding bases 312a, 322a. In some examples, the height of the first series of protrusions 310a is different from the height of the second series of protrusions 320a. For example, Figure 6 and Figure 7The first series of protrusions 310a are shown as having a greater height than the second series of protrusions 320a (e.g., the corresponding distal ends 314a extend further from the bottom surface 222a). The height (and taper) of the protrusions 300a allows for a certain amount of particulate matter 350 to be present in the cavity 240a. For example, because the first series of protrusions 310a extend further from the inner surface 222a than the second series of protrusions 320a (e.g., a greater height), the heel portion 16 allows for a greater amount of particulate matter 350 than the forefoot portion 12. Although the examples herein illustrate a uniform height for each protrusion in the first series of protrusions 310a, a uniform height for each protrusion in the second series of protrusions 320a, and a uniform height for each protrusion in the second series of protrusions 320a, in some cases, the height of the protrusions 300a may vary between individual protrusions in either the first series of protrusions 310a or the second series of protrusions 320a.

[0091] Figures 4 to 7 The example of FIG. 2 shows that the geometry (e.g., height, taper, cross-sectional area) and arrangement of the first and second protrusions 310a, 320a extending into the cavity 240a achieves dispersion of the particulate material 350 and provides for a shift in cushioning from soft to responsive during gradient loading of the insole structure 200a, such as during walking or running motions. Due to the initial impact of ground reaction forces occurring at the heel portion 16, it may be more desirable to increase the soft level of cushioning at the heel portion 16 rather than at the forefoot portion 12. Thus, by extending the first series of protrusions 310a further from the bottom surface 222a, a greater amount of particulate material 350 may be present at the heel portion 16. In this example, a certain amount of particulate material 350 may provide a soft level of cushioning during the initial impact of the ground reaction force, while the compressibility of the protrusions 310a, 320a may occur after the initial impact to provide a responsive level of cushioning. Furthermore, when shoe 10a is worn, the amount of particulate matter 350 stored in cavity 240a may be varied to increase or decrease the level of soft-type cushioning.

[0092] The amount of particulate matter 350 can be expressed as the ratio of particulate matter 350 in cavity 240a to the unoccupied space. For example, by filling all recesses of cavity 240a between protrusions 310a, 320a and inner surface 214a of outsole 210a with particulate matter 350, Figure 6), the soft type cushioning level is increased to reduce the ground reaction force under the load experienced by the sole structure 200a, while the movement of the particulate matter 350 is also limited due to the lack of unoccupied space. In contrast, by dispersing a smaller amount of particulate matter 350 within the cavity 240a, a lower ratio of particulate matter 350 to unoccupied space is provided ( Figure 7 ), the level of soft-type cushioning decreases during gradient loading, while also allowing particulate matter 350 to move into and occupy previously unoccupied space within cavity 240a as particulate matter 350 and protrusions 310a, 320a compress. The ability of particulate matter 350 to move into previously unoccupied space within cavity 240a can dynamically provide soft-type cushioning to various areas or portions of sole structure 200a based on the magnitude of the ground reaction force and the direction in which the ground reaction force is applied.

[0093] Reference Figures 8 to 11 In some embodiments, an article of footwear 10b includes an upper 100 and a sole structure 200b attached to the upper 100. Given that the components associated with the article of footwear 10 are substantially similar in structure and function relative to the article of footwear 10b, the same reference numerals are used below and in the figures to identify the same components, while the same reference numerals with letter extensions are used to identify those components that have been modified. The sole structure 200b may include an outsole 210b and a midsole 220b, which are arranged in a layered configuration and define a cavity 240b between the outsole 210b and the midsole 220b. The outsole 210b includes an inner surface 214b disposed on a side of the outsole 210b opposite the ground engaging surface 212. The midsole 220b includes a bottom surface 222b disposed on a side of the midsole 220b opposite the footbed 224b. The sole structure 200b may also include an insole 228( Figure 10 and Figure 11 ), an insole 228 is disposed on a footbed 224b beneath the foot within at least a portion of the interior volume 102 of the upper 100. A bottom surface 222b opposes the inner surface 214b to define a cavity 240b, and a sidewall 230 may separate the bottom surface 222b and the inner surface 214b to define a depth of the cavity 240b.

[0094] In some embodiments, protrusion 300b extends into cavity 240b to provide cushioning for the foot and to control the migration of particulate matter 350 located in cavity 240b during use of footwear 10b. Protrusion 300b may be formed of Figures 1 to 7 The protrusions 300, 300a are formed of one or more polymer foam materials to provide elastic compressibility under an applied load to attenuate ground reaction forces. Figure 9An exploded view of the article of footwear 10b is provided showing protrusions 300b extending from the inner surface 214b of the outsole 210b in a direction toward the bottom surface 222b of the midsole 220b and arranged in a pattern across the inner surface 214b to define a plurality of honeycomb-shaped cells 902 .

[0095] In some examples, divider 334b ​​may extend partially from inner surface 214a of outsole 210 into cavity 240b. Divider 334b ​​may limit or manipulate the migration of particulate matter 350 between specific areas or portions within cavity 240b of sole structure 200b. For example, forefoot region 912 may extend partially from inner surface 214a of outsole 210 into cavity 240b. Figure 10 The view shown in FIG is located to the right of the partition 334b, and the protrusion 300b is relative to Figure 10 The view shown in FIG is located to the left of the divider 334 b. Figures 9 to 11 The example shows divider 334b ​​positioned proximate to forefoot portion 12 of outsole 210. Although divider 334b ​​is shown as being positioned proximate to forefoot portion 12, one or more other dividers may additionally or alternatively be positioned proximate to midfoot portion 14 and / or heel portion 16 of outsole 210b.

[0096] The protrusions 300b defining the honeycomb cells 902 can receive a portion of a quantity of particulate material 350 (e.g., foam beads) at the midfoot portion 14 and the heel portion 16 of the sole structure 200b (e.g., to the left of the divider 334b). Similarly, the remainder of the quantity of particulate material 350 can be arranged and laid on the inner surface 214b to be located within the cavity 240b at the forefoot region 912 of the sole structure 200b (e.g., relative to the forefoot region 912). Figure 10 34b of the view shown in FIG). Thus, during gradient loading of sole structure 200b, protrusions 300b and particulate material 350 can cooperate to provide a combination of soft and responsive cushioning at midfoot portion 14 and heel portion 16, while particulate material 350 provides soft cushioning in forefoot region 912 at forefoot portion 12. Midsole 220b can be formed of Figures 1 to 3 The flexible material of midsole 220 is formed so that midsole 220b has sufficient flexibility to allow particulate matter 350 contained within honeycomb cells 902 to interact with the contours of the bottom surface of the foot during gradient loading of sole structure 200b.

[0097] Figure 10 and Figure 11 It is along Figure 8The cross-sectional view taken along line 10-10 of FIG. 1 shows a protrusion 300b extending from the inner surface 214a of the outsole 210b toward the bottom surface 222a of the midsole 220b. In some examples, the protrusion 300b can extend from a protrusion base 900 that is opposite and in contact with the inner surface 214b of the outsole 210b. Figure 9 and Figure 10 In the example shown, arrow 302 indicates the direction from outsole 210b toward midsole 220b. In some examples, the size and volume of one or more honeycomb cells 902 vary to provide different levels of soft cushioning for responsiveness. In some examples, protrusion 300b and protrusion base 900 are part of a single component disposed within cavity 240b located on inner surface 214b. In embodiments where protrusion base 900 is omitted, protrusion 300b may be part of a single component 240b disposed on inner surface 214b. In other examples, protrusion 300b is integrally formed with outsole 210b and extends from inner surface 214b.

[0098] Reference Figure 10 , protrusions 300b are shown extending in the direction of arrow 302 from protrusion base 900 (or, if base 900 is omitted, from inner surface 214b) toward bottom surface 222b and terminating at a point of contact with bottom surface 222b. A quantity of particulate matter 350 is located between inner surface 214b and bottom surface 222b at forefoot portion 12 and within honeycomb cells 902 defined by protrusions 300b in midfoot portion 16 at heel portion 14 of sole structure 200b. Figure 10 In the example shown, each compartment 902 restricts the migration or displacement of particulate matter 350 located therein to adjacent compartments 902. In some cases, under gradient loading of sole structure 200b, protrusions 300b compress to provide responsive cushioning, and particulate matter 350 compresses to provide soft cushioning, thereby attenuating ground reaction forces.

[0099] In other examples, refer to Figure 11, protrusions 300b extend from protrusion base 900 (or, if base 900 is omitted, from inner surface 214b) toward bottom surface 222b in the direction of arrow 302 and terminate at respective distal ends 314b that do not contact bottom surface 222b of midsole 220b when sole structure 200b is at rest. Thus, gaps separate distal ends 314b from bottom surface 222b of midsole 220b. Although particulate matter 350 resides in cavities 240b at forefoot portion 12, midfoot portion 14, and heel portion 16, respectively, when sole structure 200b is at rest and unloaded, particulate matter 350 located in honeycomb cells 902 can migrate to adjacent cells at distal ends 314b via the gaps when sole structure 200b is under load. In other words, under gradient loading of sole structure 200b, granular material 350 initially compresses between bottom surface 222b, inner surface 214b, and protrusion 300b to provide an initial soft cushioning effect, thereby attenuating ground reaction forces. Thereafter, compressed granular material 350 causes midsole 220b to translate in a direction opposite to arrow 302 toward inner surface 214b and into contact with distal end 314b of protrusion 300b. As midsole 220b translates, but before bottom surface 222b contacts distal end 314b, portions of granular material 350 located within one or more compartments 902 may migrate to adjacent compartments 902 based on the magnitude and direction of the ground reaction force.

[0100] By translating the midsole 220b and compressing the protrusion 300b, responsive cushioning is provided after the initial soft cushioning provided by the granular material 350, further attenuating ground reaction forces. The migration of the granular material 350 between the honeycomb cells 902 enables the distribution of soft and responsive cushioning during gradient loading. However, the divider 334b ​​restricts the migration of the granular material 350 into and out of the forefoot region 912 located below the divider 334b. Furthermore, the magnitude and direction of the ground reaction forces applied to the sole structure 200b can dictate how and whether the granular material 350 will migrate through the gaps on the distal end 314b of the protrusion 300b. In some configurations, the midsole 220b or a portion of the midsole 220b can be removed to provide direct contact between the insole 228 supporting the bottom surface of the foot and the granular material 350 located in the cavity 240b. In these configurations, insole 228 may correspond to a flexible stroble that allows particulate matter 350 located in cavity 240b to conform to the bottom surface of the foot during gradient loading of sole structure 200b.

[0101] Reference Figures 12 to 15 In some embodiments, article of footwear 10c includes an upper 100 and a sole structure 200c attached to upper 100 . Figure 12A bottom perspective view of footwear 10c is shown. Given that the components associated with article of footwear 10 are substantially similar in structure and function to article of footwear 10c, like reference numerals are used hereinafter and in the accompanying drawings to identify like components, while like reference numerals with letter extensions are used to identify those components that have been modified. Sole structure 200c may include an outsole 210c and a midsole 220c arranged in a layered configuration and defining a cavity 240c therebetween. Outsole 210c includes an inner surface 214c disposed on a side of outsole 210c opposite ground engaging surface 212c. Midsole 220c includes a bottom surface 222c disposed on a side of midsole 220c opposite footbed 224b. Sole structure 200c may also include an insole 228( Figure 14 and Figure 15 ), an insole 228 is disposed on a footbed 224b beneath the foot within at least a portion of the interior volume 102 of the upper 100. A bottom surface 222c opposes the interior surface 214c to define a cavity 240c, and a sidewall 230 may separate the bottom surface 222c from the interior surface 214c to define a depth of the cavity 240c.

[0102] In some embodiments, the particulate matter 350 is received within the housing 1350, and the cavity 240c receives the housing 1350. In some configurations, the housing 1350 is flexible and can be transparent or opaque. Figure 13 FIG2 is an exploded view of article of footwear 12c, illustrating particulate matter 350 positioned within a transparent shell 1350. Shell 1350 includes a bottom surface 1352 and a top surface 1354, which define a volume for receiving and storing a quantity of particulate matter 350. Shell 1350 can be disposed on inner surface 214c of outsole 210c, while the perimeter of shell 1350 can be surrounded by sidewall 230. That is, bottom surface 1352 opposes and rests on inner surface 214c, and top surface 1354 opposes bottom surface 222c of midsole 220c, while sidewall 230 surrounds shell 1350. In some examples, the depth of shell 1350, which extends from inner surface 214c toward midsole 220c, is less than the depth of cavity 240c defined by sidewall 230, which separates outsole 210c from midsole 220c. The volume of the shell 1350 can be substantially filled with the multiple layers of particulate matter 350, thereby causing the shell 1350 to be substantially solid. The midsole 220c can be formed of Figures 1 to 3 The flexible material of midsole 220 is formed to provide midsole 220c with sufficient flexibility to allow particulate matter 350 contained within shell 1350 and located within cavity 240c to interact with the contours of the bottom surface of the foot during gradient loading of sole structure 200c.

[0103] In some examples, the shell 1350 has one or more dividers 332c, 334c, 336c that extend between the lateral side 18 and the medial side 20 and also extend from the bottom surface 1352 of the shell 1350 toward the top surface 1354. The dividers 332c-336c may also be referred to as protrusions. One divider 332c may be positioned proximate to the midfoot portion 14 of the sole structure 200c, another divider 334c may be positioned proximate to the forefoot portion 12 of the sole structure 200c, and another divider 336c may be positioned proximate to the heel portion 16 of the sole structure 200c. In some configurations, the toe region 1300 of the shell 1350 is oriented relative to the Figure 14 The view shown in FIG is formed on the right side of the separator 334c, the forefoot region 1302 is formed between the separator 332c and the separator 334c, the midfoot region 1304 is formed between the separator 332c and the separator 336c, and the heel region 1306 is formed relative to Figure 14 336c. The view shown in FIG. 332c, 334c, 336c can limit or control the migration of particulate material 350 between adjacent regions 1300-1306. In addition, different amounts of particulate material 350 can be located within respective regions 1300-1306 to provide a desired level of soft-type cushioning and to help promote the migration of particulate material 350 between defined adjacent regions during gradient loading of sole structure 200c.

[0104] Figure 14 and Figure 15 It is along Figure 12 The cross-sectional view taken along line 14-14 of FIG. 1 shows the housing 1350 filled with particulate matter 350 and positioned within the cavity 240c between the midsole 220c and the outsole 210c. More specifically, Figure 14 and Figure 15 The sole structure 200c is shown when it is not under load ( Figure 14 ) and when the sole structure 200c is under load ( Figure 15) surface 212c of outsole 210c that engages ground surface 2. These examples illustrate that bottom surface 1352 of shell 1350 protrudes toward top surface 1354 at corresponding locations to form dividers 332c-336c that extend toward top surface 1354. In some examples, dividers 332c-336c terminate within shell 1350, and gaps separate top surface 1354 from dividers 332c-336c. These gaps allow some particulate matter 350 to migrate between adjacent areas 1300-1306 of shell 1350 during use of article of footwear 10. Conversely, other configurations may include one or more dividers 332c-336c that terminate at corresponding points of contact with top surface 1354 to prevent any migration between adjacent areas 1300-1306 separated by dividers 332c-336c in contact with top surface 1354.

[0105] In some embodiments, the outsole 210c defines a series of grooves 442, 444, 446 that extend between the lateral side 18 and the medial side 20 and also extend in a direction toward the midsole 220c. Each groove 442, 444, 446 curves and bends in a direction toward the midsole 220c, and each groove 442, 444, 446 is contoured to correspond to a corresponding divider in the dividers 332c, 334c, 336c. In some examples, the grooves 442-444 are flexible to form corresponding flexure zones that enhance the ability of the outsole 210c to flex, bend, or otherwise deform when the sole structure 200c is under load, such as during walking, running, or jumping. For example, Figure 15 It is shown that when a load is applied to the sole structure 200c, such as during a walking or running stride, the grooves 442 flex, causing the midfoot portion 14 and heel portion 16 of the sole structure 200c to bend about the grooves 442 and lift off the ground surface 2. In this example, the particulate material 350 located in the midfoot region 1304 above the divider 332c can be displaced or migrated into the forefoot region 1302, and / or the particulate material 350 located in the heel region 1304 above the divider 336c can be displaced or migrated into the midfoot region 1304. In addition to the soft cushioning provided by the compression of the particulate material 350, the shell 1350 can include rigid features to provide responsive cushioning when the sole structure 200c is compressed. In some configurations, the midsole 220c and the insole 228, or portions of the midsole 220c and the insole 228, can be removed to provide direct contact between the bottom surface of the foot and the top surface 1354 of the shell 1350. In these configurations, top surface 1354 of shell 1350 can correspond to a flexible cushion that allows particulate matter 350 located in cavity 240c to conform to the bottom surface of the foot during gradient loading of sole structure 200c.

[0106] Reference Figures 16 to 18 In some embodiments, an article of footwear 10d includes an upper 100 and a sole structure 200d attached to the upper 100 . Figure 16 Given that the components associated with article of footwear 10 are substantially similar in structure and function to those of article of footwear 10d, like reference numerals will be used hereinafter and in the accompanying drawings to identify like components, while like reference numerals with letter extensions will be used to identify those components that have been modified.

[0107] The sole structure 200d may include an outsole 210d and a midsole 220d arranged in a layered configuration and defining a cavity 240d therebetween. The outsole 210d includes an inner surface 214d disposed on a side of the outsole 210d opposite the ground engaging surface 212d. The outsole 210d may define a series of grooves 442, 444, 446 ( Figure 14 and Figure 15 ), the series of grooves 442, 444, 446 extend within cavity 240d between lateral side 18 and medial side 20 to form a toe region 1300, a forefoot region 1302, a midfoot region 1304, and a heel region 1306, respectively. In some embodiments, outsole 210d further defines one or more closed grooves 1400, 1402, 1404, 1406 located within corresponding ones of regions 1300, 1302, 1304, 1306. A closed groove refers to a groove having one or more sides that close at their ends to form a loop that completely or partially surrounds an interior region within cavity 240d. The interior regions formed by the respective grooves 1400-1406 can include the same or different shapes, such as polygonal (e.g., rectangular or trapezoidal) or elliptical. Figure 16 The toe region 1300 is shown having two symmetrically arranged closed grooves 1400, the forefoot region 1302 having a closed groove 1402, the midfoot region 1304 having a closed groove 1404, and the heel region 1306 having a closed groove 1406. Each closed groove 1400-1406 can extend into the cavity 240d in a direction toward the midsole 220d, as shown. Figure 17 and Figure 18 shown.

[0108] Midsole 220d includes a bottom surface 222d disposed on the side of midsole 220c opposite footbed 224d, and midsole 220d may be integrally formed with outsole 210d. Sole structure 200d may also include an insole 228 disposed on footbed 224b within at least a portion of interior space 102 of upper 200. Bottom surface 222d opposes interior surface 214d to define cavity 240d. Sidewall 230 separates bottom surface 222d from interior surface 214d to define the depth of cavity 240d and, like midsole 222d, may be integrally formed with outsole 210d.

[0109] In some embodiments, the particulate matter 350 is located within the cavity 240d between the inner surface 214d of the outsole 210d, the bottom surface 222d of the midsole 220d, and the sidewall 230. Figures 12 to 15 In contrast to the example of FIG, no housing is used to enclose the particulate matter 350. Instead, the particulate matter 350 fills a portion or all of the volume of the cavity 240d. Figure 17 , along Figure 16A cross-sectional view of heel region 1306 taken along line 17-17 in FIG. 1 shows closed groove 1406 and particulate material 350 within cavity 240d of sole structure 200d. In some examples, outsole 210d curves and tapers into cavity 240d in a direction toward midsole 220d to form closed groove 1406. In other examples, outsole 210d curves or bends without tapering into cavity 240d. Closed groove 1406 defines a divider 368 positioned proximate lateral side 18 and a divider 370 positioned proximate medial side 20. A peripheral region 1718 is formed between divider 368 and sidewall 230 at lateral side 18, an inner peripheral region 1720 is formed between divider 370 and sidewall 230 at medial side 20, and an inner region 1722 is formed between dividers 368, 370 (e.g., inner region 1722 is surrounded by closed groove 1406). Particulate matter 350 may be located within cavity 240d at each of regions 1718, 1720, and 1722. In some embodiments, dividers 368 and 370 extend from outsole 210d into cavity 240d and have distal ends that terminate without contacting bottom surface 222d of midsole 220d. That is, the distal ends of dividers 368 and 370 are separated from bottom surface 222d by corresponding gaps. The corresponding gaps separating dividers 368 and 370 from bottom surface 222d can allow particulate matter 350 located in regions 1718, 1720, and 1722 to migrate to adjacent areas through the gaps during gradient loading of sole structure 200d. In other embodiments, the dividers 368, 370 extend from the outsole 210d into the cavity 240d and have distal ends that terminate at a point of contact with the bottom surface 222d of the midsole 220d, thereby preventing particulate matter 350 from migrating between the adjacent areas 1718, 1720, 1722 that are separated and isolated by the dividers 368, 370 in contact with the bottom surface 222d. The midsole 220d may be formed of Figures 1 to 3 The flexible material of midsole 220d is formed to provide sufficient flexibility to midsole 220d to allow particulate matter 350 received within cavity 240d to interact with the contours of the bottom surface of the foot during gradient loading of sole structure 200d.

[0110] Reference Figure 18 , along Figure 16A partial cross-sectional view of forefoot region 1302, taken along line 18-18, illustrates closed groove 1402 and particulate material 350 within cavity 240d of sole structure 200d. In some examples, outsole 210d curves and tapers into cavity 240d in a direction toward midsole 220d to form closed groove 1402. In other examples, outsole 210d curves or bends without tapering into cavity 240d. Closed groove 1402 defines divider 468 positioned proximate lateral side 18 and divider 470 positioned proximate medial side 20. A peripheral region 1818 is formed between the divider 468 and the side wall 230 at the outer side 18, an inner region 1820 is formed between the divider 470 and the side wall 230 at the inner side 20, and an inner region 1822 is formed between the dividers 468, 470 (e.g., the inner region 1822 is surrounded between the closed grooves 1402).

[0111] Particulate matter 350 may be located within cavity 240d at each of regions 1818, 1820, and 1822. In some embodiments, dividers 468 and 470 extend from outsole 210d into cavity 240d and have distal ends that terminate without contacting bottom surface 222d of midsole 220d. That is, the distal ends of dividers 468 and 470 are separated from bottom surface 222d by corresponding gaps. The corresponding gaps separating dividers 468 and 470 from bottom surface 222d can allow particulate matter 350 located in regions 1818, 1820, and 1822 to migrate through the gaps to adjacent areas during gradient loading of sole structure 200d. In other embodiments, dividers 468, 470 extend from outsole 210d into cavity 240d and have distal ends that terminate at a point of contact with bottom surface 222d of midsole 220d, thereby preventing particulate matter 350 from migrating between adjacent areas 1818, 1820, 1822 that are separated and isolated by dividers 468, 470 in contact with bottom surface 222d. Closed grooves 1400 and 1404 can be constructed similarly to closed grooves 1402 and 1406 discussed in the above embodiments. In some configurations, midsole 220d or a portion of midsole 220d can be removed to provide direct contact between insole 228 supporting the bottom surface of the foot and particulate matter 350 located in cavity 240d. In these configurations, insole 228 may correspond to a flexible cushion that allows particulate matter 350 located in cavity 240d to conform to the bottom surface of the foot during gradient loading of sole structure 200d.

[0112] Reference Figures 19 to 21 , an article of footwear 10e is provided and includes an upper 100 and a sole structure 200e attached to the upper 100. Figure 19Given the substantial similarity in structure and function of components associated with article of footwear 10 relative to article of footwear 10e, like reference numerals will be used hereinafter and in the accompanying drawings to identify like components, while like reference numerals with letter extensions will be used to identify those components that have been modified.

[0113] The sole structure 200e may include an outsole 210e and a midsole 220e, which are arranged in a layered configuration and define a cavity 240e therebetween. The outsole 210e includes an inner surface 214e disposed on a side of the outsole 210e opposite the ground-engaging surface 212e. The midsole 220e includes a bottom surface 222e disposed on a side of the midsole 220e opposite the footbed 224e. The sole structure 200e may also include an insole 228 disposed on the footbed 224e within at least a portion of the interior space 102 of the upper 100. The bottom surface 222e opposes the inner surface 214e to define the cavity 240e, and a sidewall 230 separates the bottom surface 222e from the inner surface 214e to define the depth of the cavity 240e.

[0114] In some embodiments, protruding plate 300e extends into cavity 240e to control migration of particulate matter 350 located in cavity 240e during use of footwear 10e. Figure 20 An exploded view of an article of footwear 10e is provided, showing a protruding plate 300e extending in the direction of arrow 302 from an inner surface 214e of an outsole 210e toward a bottom surface 222e of a midsole 220e. The protruding plate 300e, the midsole 220e, and the outsole 210e extend around the perimeter of the sole structure 200e and have a shape that generally corresponds to the contours of a foot. More specifically, the protruding plate 300e, the midsole 220e, and the outsole 210e extend from the forefoot portion 12 to the heel portion 16 and also extend from the lateral side 18 to the medial side 20. Apertures 2000, 2002, 2004, 2006 extend between the surfaces of the protruding plate 300e to form an opening that exposes a portion of the inner surface 214e of the outsole 210e. The surface of the protruding plate 300e can be contoured to conform to the shape of the bottom surface of a foot. One of the apertures 2000 is located primarily in the forefoot portion 12, while the other aperture 2002 is located in the forefoot portion 12 and extends into the midfoot portion 14. The aperture 2004 is located in the midfoot portion 14 and the heel portion 16, and the aperture 2006 is located primarily in the heel portion 16 and is located at a position corresponding to the calcaneus bone of the foot. That is, the aperture 2006 in the heel portion 16 is generally positioned to correspond to the heel of the foot.

[0115] Each of the apertures 2000-2006 corresponds to a receptacle surrounded by the inner wall of the protruding plate 300e to receive and store a corresponding amount of particulate matter 350. The distance that the protruding plate 300e extends from the inner surface 214e of the outsole 210e toward the bottom surface 222e of the midsole 220e defines the depth of the apertures / receptacles 2000-2006. In some examples, the protruding plate 300e partially extends from the inner surface 214e of the outsole 210e into the cavity 240e, thereby allowing particulate matter 350 located above the protruding plate (e.g., outside the apertures 2000-2006) to migrate through the cavity 240e to the adjacent portions 12, 14, 16 of the sole structure 200e. In other examples, the protruding plate 300e extends from the inner surface 214e through the cavity 240e and contacts the bottom surface 222e of the midsole 220e to close the apertures 2000-2006, thereby restricting the migration or displacement of particulate matter 350 within the apertures 2000-2006.

[0116] For example, the protruding plate 300e can be formed from various materials including polymers. Suitable polymers include polyesters, thermosetting polyurethanes, thermoplastic polyurethanes, various nylon formulations, rubber, polyether block amides, polybutylene terephthalate, or mixtures of these materials. Composite materials can also be formed by combining glass fiber or carbon fiber into the various polymer materials mentioned above. In some examples, the plate 300e can also be formed from a polymer foam material. Therefore, depending on the desired characteristics of the sole structure 200e, a variety of different materials can be used when manufacturing the protruding plate 300e. The midsole 220e can be formed from Figures 1 to 3 The midsole 220 is formed of a flexible material to provide sufficient flexibility to the midsole 220e to allow the protruding plate 300e and the particulate matter 350 located in the cavity 240a to translate from the midsole 220e toward the inner surface 214e of the outsole 210e during gradient loading of the sole structure 200e to provide cushioning for the bottom surface of the foot.

[0117] Reference Figure 21 , along Figure 19The cross-sectional view taken along line 21-21 of FIG. 2 shows particulate matter 350 within the cavity 240e between the midsole 220e and the outsole 210e. This example shows a protruding plate 300e extending partially from the inner surface 214e of the outsole 210e into the cavity 240e and orifices 2000-2006 extending through the surface of the protruding plate 300e, which expose the inner surface 214e. Particulate matter 350 can partially or completely fill the volume of the cavity 240e between the bottom surface 222d and the inner surface 214e or the protruding plate 300e. The distance that the protruding plate 300e extends away from the inner surface 214e corresponds to the height of the inner wall of the protruding plate 300e that defines the depth of the orifices 2000-2006. Accordingly, particulate matter 350 located below the depth of one of the orifices 2000-2006 is restricted from migrating to the adjacent orifice. However, if unoccupied space exists within cavity 240e, particulate matter 350 located above the depth of apertures 2000-2006 is allowed to migrate between adjacent apertures. In some configurations, midsole 220e or a portion of midsole 220e can be removed to provide direct contact between insole 228 supporting the bottom surface of the foot and particulate matter 350 located in cavity 240e. In these configurations, insole 228 can correspond to a flexible cushion that allows particulate matter 350 located in cavity 240e to conform to the bottom surface of the foot during gradient loading of sole structure 200e.

[0118] Reference Figures 22 to 24 In some embodiments, an article of footwear 10f includes an upper 100 and a sole structure 200f attached to the upper 100. Given that the components associated with the article of footwear 10 are substantially similar in structure and function to those of the article of footwear 10f, identical reference numerals will be used hereinafter and in the accompanying drawings to identify identical components, while identical reference numerals with extended letters will be used to identify those components that have been modified. The sole structure 200f may include an outsole 210f and a midsole 220f, which are arranged in a layered configuration and define a cavity 240f therebetween. The outsole 210f includes an inner surface 214f ​​disposed on a side of the outsole 210f opposite the ground-engaging surface 212. The midsole 220f includes a bottom surface 222f disposed on a side of the midsole 220f opposite the footbed 224. The bottom surface 222f is opposite to the inner surface 214f ​​to define a cavity 240f therebetween. The sidewall 230 may separate the bottom surface 222f and the inner surface 214f ​​to define a depth of the cavity 240f.

[0119] In some embodiments, protrusion 300f extends into cavity 240f to provide cushioning for the foot during use of footwear 10f and to support and limit movement of tufted shell 400 containing particulate matter 350 located in cavity 240a. Protrusion 300f may be formed of Figures 1 to 3 The protrusions 300 are formed of one or more polymer foam materials to provide resilient compressibility under applied loads to attenuate ground reaction forces. Figure 23 An exploded view of an article of footwear 10f is provided showing protrusions 300f extending in a direction from the inner surface 214f ​​of the outsole 210f toward the bottom surface 222f of the midsole 220f. In this embodiment, a tufted shell 400 that holds particulate matter 350 (e.g., foam beads) is disposed on the protrusions 300f extending from the inner surface 214f ​​of the outsole 210f. The tufted shell 400 can be sized and shaped to generally conform to the contours of the midsole 220f and the outsole 210f. In some examples, the protrusions 300f are arranged in repeating rows, and each protrusion 300f is spaced equidistant from an adjacent protrusion 300f. In other examples, the protrusions 300f are arranged in alternating, repeating rows. The midsole 220f can be formed of Figures 1 to 3 The flexible material of midsole 220 is formed to provide sufficient flexibility to midsole 220f to allow particulate matter 350 received within tufted shell 400 and located in cavity 240f to interact with the contours of the bottom surface of the foot during gradient loading of sole structure 200f.

[0120] Tufted housing 400 can be formed by flexible material. In a kind of configuration, tufted housing 400 is formed by mesh material. Additionally or alternatively, tufted housing 400 can be formed by nylon material. Therefore, tufted housing 400 can be formed by flexible material, mesh material and / or nylon material. Alternatively, tufted housing 400 can be formed by the granular matter 350 that allows to accept with any suitable material that conforms to the profile of the surface profile of inner surface 214f ​​and bottom surface 222f and sidewall 230, respectively, of sole structure 200f. In some configurations, the part of midsole 220f or midsole 220f can be removed to provide the bottom surface of foot and hold the direct contact between the tufted housing 400 of granular matter 350.

[0121] When shell 400 is received by cavity 240f on protrusion 300f, first end 402 of tufted shell 400 is located proximate heel portion 16, and second end 404 of tufted shell 400 is located proximate forefoot portion 12. Tufted shell 400 can be formed by tufting, joining, or fastening together portions of material to define tufted areas or pockets 440, each filled with a corresponding amount of particulate material 350. The pockets can extend along the length of shell 400 between first end 402 and second end 404, and respective lateral side 18 and medial side 20 of sole structure 200f. In some examples, each pocket 440 includes substantially the same amount of particulate material 350, while in other examples, at least one of pockets 440 includes a different amount of particulate material 350. For example, it may be desirable to include a greater amount of particulate material 350 within pockets 440 located proximate heel portion 16 to increase the level of soft-type cushioning in the heel area of ​​the foot. Pockets 440 can restrict the migration of corresponding amounts of particulate matter 350 to adjacent pockets. However, some movement of particulate matter 350 within the corresponding pockets can be permitted to provide fluid cushioning during gradient loading of sole structure 200f. In other words, the pockets effectively prevent loss of cushioning in areas of sole structure 200f due to migration of particulate matter 350 during repeated compression of sole structure 200f, but movement of particulate matter 350 within each pocket 440 can be permitted.

[0122] Reference Figure 24 , along Figure 22 The cross-sectional view taken along line 24-24 of FIG. 24 shows the tufted housing 400 including particulate matter 350 received within the cavity 240f and on a projection 300f extending from the inner surface 214f. Figure 24FIG20 is a diagram showing a shoe sole structure 200f that is not under an applied load (i.e., the shoe sole structure 200f is in a stationary state) wherein the projection 300f supports the tufted housing 400 and the projection 300f is spaced apart from the midsole 220f. However, the compression of the shoe sole structure 200f can allow the bottom surface 222f of the midsole 220f to cooperate with the tufted housing 400 that holds the granular material 350 to translate toward the outsole 210f and contact with one or more projections 300f. Here, as the granular material 350 within the pocket 440 of the tufted housing 400 compresses during the gradient loading of the shoe sole structure 200f, the projection 300f can be compressed when in contact with the bottom surface 222f. As described above, the compressibility of the granular material 350 can provide soft-type cushioning, while the compressibility of the projection 300f can provide responsive cushioning. Thus, the protrusions 300f and the particulate material 350 located within the tufted shell 400 can cooperate to provide gradient cushioning to the article of footwear 10f that varies as the applied load varies (i.e., the greater the load, the more the protrusions 300f are compressed and, therefore, the more responsive the footwear 10f performs). In some configurations, the midsole 220f or a portion of the midsole 220f can be removed to provide closer contact between the bottom surface of the foot and the particulate material 350 disposed within the pockets 440 of the tufted shell 400 and within the cavities 240f. In these configurations, the surface of the shell 400 opposite the bottom surface of the foot can correspond to a flexible cushion that allows the particulate material 350 located in the pockets 440 to conform to the bottom surface of the foot during gradient loading of the sole structure 200f.

[0123] Reference Figures 25 to 27 An article of footwear 10g is provided, and includes an upper 100 and a sole structure 200g attached to the upper 100. Given that the components associated with the article of footwear 10 are substantially similar in structure and function to those of the article of footwear 10g, identical reference numerals will be used hereinafter and in the accompanying drawings to identify identical components, while identical reference numerals with extended letters will be used to identify those components that have been modified. The sole structure 200g may include an outsole 210g and a midsole 220g, arranged in a layered configuration and defining a cavity 240g therebetween. The outsole 210g includes an inner surface 214g disposed on a side of the outsole 210g opposite the ground-engaging surface 212. The midsole 220g includes a bottom surface 222g disposed on a side of the midsole 220g opposite the footbed 224. The bottom surface 222g is opposed to the inner surface 214g to define a cavity 240g therebetween. The sidewall 230 may separate the bottom surface 222g and the inner surface 214g to define a depth of the cavity 240g.

[0124] The projection 300g extends into the cavity 240g to provide cushioning for the foot and to support the cushioning layer 500 and the tufted shell 400 containing the particulate matter 350 present in the cavity 240g during use of the footwear 10f. The projection 300g may be formed of Figures 1 to 3 The protrusions 300 are formed of one or more polymer foam materials to provide elastic compressibility under applied loads to attenuate ground reaction forces. Figure 26 Provide an exploded view of an article of footwear 10g, showing a tufted shell 400, a cushioning layer 500, and a projection 300g extending in a direction from the inner surface 214g of the outsole 210g toward the bottom surface 222g of the midsole 220g. The tufted shell 400 and the cushioning layer 500 can each have a length extending through the forefoot portion 12, the midfoot portion 14, and the heel portion 16, respectively, and a width between the lateral side 18 and the medial side 20, respectively. The tufted shell 400 and the cushioning layer 500 can be sized and shaped to substantially conform to the contours of the midsole 220g and the outsole 210g. When the sole structure 200g is assembled, the cushioning layer 500 can be placed between the distal end of the projection 300g and the tufted shell 400, and the cushioning layer 500 can contact the distal end of the projection 300g and the tufted shell 400. The cushioning layer 500 may include a contoured structure that forms a plurality of ridges 510 positioned along the surface of the cushioning layer 500 to define a so-called egg-crate shape. The cushioning layer 500 may be formed from one or more polymer foam materials, such as ethylene vinyl acetate or polyurethane. Each protrusion 300g may be aligned with a corresponding ridge 510 of the cushioning layer 500 opposite the outsole 210g. The midsole 220g may be formed from Figures 1 to 3 The flexible material of the midsole 220 is formed to provide sufficient flexibility to the midsole 220g to allow the particulate matter 350 received within the tufted shell 400 and located in the cavity 240g to interact with the contours of the bottom surface of the foot during gradient loading of the sole structure 200g.

[0125] Reference Figure 27 , along Figure 25 The cross-sectional view taken along line 27-27 shows the tufted shell 400 housing the particulate matter 350 and the cushioning layer 500 received within the cavity 240g on the projection 300g extending from the inner surface 214g of the outsole 210g. Figure 27Each ridge 510 of the cushioning layer 500 is shown, and each ridge 510 of the cushioning layer 500 is opposite the outsole 210g and is supported by a corresponding one of the protrusions 300g extending from the inner surface 214g into the cavity 240g. The paired ridges 510 and protrusions 300g located within the cavity 240g can cooperate to provide elastic compressibility under an applied load to reduce ground reaction forces. For example, the paired ridges 510 and protrusions 300g can compress against each other under load to provide a spring effect that reduces the impact amplitude on the foot. In some examples, the space between the paired ridges 510 and protrusions 300g can be filled with particulate material 350. In addition to the elastic compressibility provided by the paired ridges 510 and protrusions 300g, the particulate material 350 disposed within the pocket 440 of the tufted shell 400 compresses during gradient loading of the sole structure 200g. As described above, the compressibility of the particulate material 350 can provide soft cushioning, while the compressibility of the protrusions 300g can provide responsive cushioning. Thus, the protrusions 300g, the cushioning layer 500, and the particulate material 350 located within the tufted shell 400 can cooperate to provide a gradient cushioning to the article of footwear 10g that changes with the applied load (i.e., the greater the load, the more the protrusions 300g are compressed, and therefore the more responsive the footwear 10g is). In some configurations, the midsole 220g or a portion of the midsole 220g can be removed to provide direct contact between the bottom surface of the foot and the tufted shell 400 containing the particulate material 350.

[0126] Reference Figure 28 and Figure 29 In some embodiments, an article of footwear 10h includes an upper 100 and a sole structure 200h attached to the upper 100. Given that the components associated with the article of footwear 10 are substantially similar in structure and function to those of the article of footwear 10h, identical reference numerals will be used below and in the accompanying drawings to identify identical components, while identical reference numerals with extended letters will be used to identify those components that have been modified. The sole structure 200h may include an outsole 210h and a midsole 220h, arranged in a layered configuration and defining a cavity 240h therebetween. The outsole 210h includes an inner surface 214h disposed on a side of the outsole 210h opposite the ground-engaging surface 212. The midsole 220h includes a bottom surface 222h disposed on a side of the midsole 220h opposite the footbed 224. The bottom surface 222h is opposite to the inner surface 214h to define a cavity 240h therebetween. The sidewall 230 may separate the bottom surface 222h and the inner surface 214h to define a depth of the cavity 240h.

[0127] In some embodiments, sole structure 200h includes a cushioning layer 500h and particulate matter 350 disposed within cavity 240h. Figure 29 ,along Figure 28 The cross-sectional view taken along line 29-29 of FIG. 1 illustrates a cushioning layer 500h disposed on inner surface 214h of outsole 210h and a quantity of particulate matter 350 disposed between cushioning layer 500h and bottom surface 222h of midsole 220h when sole structure 200h is not under an applied load (i.e., when sole structure 200h is at rest). In some examples, cushioning layer 500h includes a polymer foam sheet sized and shaped to occupy a portion of the empty space within cavity 240h. Here, the gap between cushioning layer 500h and bottom surface 222h defines the remainder of the empty space within cavity 240h that receives particulate matter 350. In some examples, particulate matter 350 (e.g., foam beads) slightly overfills (e.g., crams) the remainder of the empty space within cavity 240h to allow particulate matter 350 to substantially occupy the area surrounding sidewall 230, between bottom surface 222h of midsole 220h, and cushioning layer 500h (except for the spaces between the individual beads of particulate matter 350). Midsole 220h may be formed from Figures 1 to 3 The flexible material of midsole 220 is formed to provide sufficient flexibility to midsole 220h to allow particulate matter 350 received within cavity 240h to interact with the contours of the bottom surface of the foot during gradient loading of sole structure 200h.

[0128] During gradient loading of the sole structure 200h, when the particulate material 350 is compressed between the midsole 220h and the cushioning layer 500h, the midsole 220h can translate toward the outsole 220h. Here, the cushioning layer 500h is elastically compressed between the outsole 210h and the midsole 220h. The cushioning layer 500h, together with a certain amount of particulate material 350 (e.g., foam beads) located on the cushioning layer 500h, can be combined to enhance functionality and strengthen the cushioning characteristics provided by a conventional midsole. For example, when the sole structure 200h is under load, the compression of the particulate material 350 can provide a certain degree of soft cushioning during the initial impact of the ground reaction force, while the compressibility of the cushioning layer 500h may appear after the initial impact to provide responsive cushioning. Thus, the particulate matter 350 and cushioning layer 500h located in cavity 240h can cooperate to provide gradient cushioning to article of footwear 10h that varies with applied load (i.e., the greater the load, the more the cushioning layer 500h compresses and, therefore, the more responsive the footwear 10h performs).

[0129] Reference Figure 30 and Figure 31In some embodiments, an article of footwear 10i includes an upper 100 and a sole structure 200i attached to the upper 100. Given the substantial similarity in structure and function of components associated with article of footwear 10 relative to article of footwear 10i, identical reference numerals will be used below and in the accompanying figures to identify identical components, while identical reference numerals with extended letters will be used to identify those components that have been modified. The sole structure 200i may include an outsole 210i and a midsole 220i, arranged in a layered configuration and defining a cavity 240i therebetween. The outsole 210i includes an inner surface 214i disposed on a side of the outsole 210i opposite the ground-engaging surface 212. The midsole 220i includes a bottom surface 222i disposed on a side of the midsole 220i opposite the footbed 224. The bottom surface 222i is opposite to the inner surface 214i to define a cavity 240i therebetween. The sidewall 230 may separate the bottom surface 222i and the inner surface 214i to define a depth of the cavity 240i.

[0130] In some embodiments, sole structure 200i includes a fluid-filled chamber 600 and particulate matter 350 disposed within cavity 240i. In some examples, fluid-filled chamber 600 defines an interior space that receives a pressurized fluid and provides a durable sealing barrier for retaining the pressurized fluid therein. The pressurized fluid can be air. Various polymeric materials can be used to form fluid-filled chamber 600. When selecting a polymeric material, engineering properties such as tensile strength, tensile properties, fatigue properties, and dynamic modulus, as well as material properties that prevent diffusion of the fluid contained in chamber 600, can be considered. Exemplary materials for forming fluid-filled chamber 600 can include one or more of the following: thermoplastic urethane, polyurethane, polyester, polyester polyurethane, and polyether polyurethane.

[0131] Reference Figure 31 , along Figure 30The cross-sectional view taken along line 31-31 of FIG. 1 shows a fluid-filled chamber 600 disposed on the inner surface 214i of the outsole 210i and a quantity of particulate matter 350 disposed between the fluid-filled chamber 600 and the bottom surface 222i of the midsole 220i when the sole structure 200i is not under an applied load (i.e., when the sole structure 200i is at rest). In some examples, the fluid-filled chamber 600 is sized and shaped to occupy a portion of the empty space within the cavity 240i. Here, the gap between the fluid-filled chamber 600 and the bottom surface 222i defines the remainder of the empty space within the cavity 240i that receives the particulate matter 350. In some examples, particulate matter 350 (e.g., foam beads) slightly overfills (e.g., crams) the remainder of the empty space within cavity 240i to allow particulate matter 350 to substantially occupy the area surrounding sidewall 230, between bottom surface 222i of midsole 220i, and fluid-filled chamber 600 (except for the space between the individual beads of particulate matter 350). Midsole 220i may be formed from Figures 1 to 3 The flexible material of midsole 220i is formed to provide sufficient flexibility to midsole 220i to allow particulate matter 350 received within cavity 240i to interact with the contours of the bottom surface of the foot during gradient loading of sole structure 200i.

[0132] During gradient loading of the sole structure 200i, the midsole 220i can translate toward the outsole 210i as the particulate matter 350 compresses between the midsole 220i and the fluid-filled chamber 600. Here, the fluid within the fluid-filled chamber 600 compresses between the outsole 210h and the midsole 220h. The fluid-filled chamber 600, along with a quantity of particulate matter 350 (e.g., foam beads) located above the fluid-filled chamber 600, can work together to enhance functionality and improve the cushioning properties provided by conventional midsoles. For example, when the sole structure 200i is under load, the compression of the particulate matter 350 can provide a degree of soft cushioning during the initial impact of a ground reaction force, while the compressibility of the fluid contained in the fluid-filled chamber 600 can emerge after the initial impact to provide responsive cushioning. Thus, the particulate matter 350 and fluid-filled chamber 600 located in cavity 240i can cooperate to provide gradient cushioning to the footwear 10i that varies as a function of the applied load (i.e., the greater the load, the more the fluid contained by the fluid-filled chamber 600 is compressed, and therefore, the more responsive the footwear 10i performs).

[0133] Reference Figure 32 and Figure 33, an article of footwear 10j is provided, and article of footwear 10j includes an upper 100 and a sole structure 200j attached to upper 100. Given that the components associated with article of footwear 10 are substantially similar in structure and function relative to article of footwear 10j, like reference numerals are used below and in the accompanying drawings to identify like components, while like reference numerals with letter extensions are used to identify those components that have been modified.

[0134] The sole structure 200j may include an outsole 210j and Figure 30 and Figure 31 The midsole 220i, the outsole 210j and the midsole 220i are arranged in a layered configuration and define a cavity 240i between the outsole 210j and the midsole 220i. The sole structure 200j also includes a fluid-filled chamber 600 and particulate matter 350 disposed within the cavity 240i. In other embodiments, Figure 28 and Figure 29 A bottom cushioning member 500 h may be provided on the inner surface 214 i in place of the fluid-filled chamber 600 .

[0135] Reference Figure 33 , along Figure 32 The cross-sectional view taken along line 33-33 of FIG shows the fluid-filled chamber 600 disposed on the inner surface 214i of the outsole 210j and a quantity of particulate matter 350 disposed between the fluid-filled chamber 600 and the bottom surface 222i of the midsole 220i when the sole structure 200j is not under an applied load (i.e., when the sole structure 200j is at rest). Figure 30 and Figure 31 The outsole 210i includes a substantially flat ground engaging surface 212, Figure 33 An outsole 210j of an article of footwear 10j is shown, including a ground-engaging surface 212j defining a series of bottom ridges or protrusions 213j extending away from cavity 240i and contacting the ground. Here, ground-engaging surface 212j can allow outsole 210j to bend and flex to engage the ground as sole structure 200j rolls during use of footwear 10j.

[0136] During use of the article of footwear 10j, the protrusions 213j can act as so-called pistons, as the protrusions 213j can move toward the midsole 220i under an applied load, thereby forcing the granular material 350 toward the midsole 220i. Because the midsole 220i is formed of a flexible material, as described above with respect to the article of footwear 10i, this upward movement of the protrusions 213j and the granular material 350 can be felt at the bottom surface of the user's foot, providing the user with noticeable and responsive cushioning during use. This cushioning can be customized by positioning the protrusions 213j at predetermined locations along the outsole 210j and / or by adjusting the relative size of the protrusions 213j. For example, the heel portion 16 can include larger protrusions 213j and / or a greater density of protrusions 213j than the forefoot portion 12 to provide increased upward movement of the granular material 350 during heel-strike maneuvers.

[0137] Reference Figure 34 and Figure 35 , an article of footwear 10k is provided, and the article of footwear 10k includes an upper 100 and a sole structure 200k attached to the upper 100. Given that the components associated with the article of footwear 10 are substantially similar in structure and function relative to the article of footwear 10k, the same reference numerals will be used below and in the accompanying drawings to identify the same components, while the same reference numerals with letter extensions will be used to identify those components that have been modified.

[0138] The sole structure 200k may include an outsole 210k and Figures 22 to 24 The midsole 220f, the outsole 210k and the midsole 220f are arranged in a layered configuration, and a cavity 240k is defined between the outsole 210k and the midsole 220f. Figure 35 ,along Figure 34 The partial cross-sectional view taken along line 35-35 illustrates the outsole 210k as including a ground engaging surface 212k defining a series of bottom ridges or protrusions 213k extending away from the cavity 240k and an inner surface 214k disposed on a side of the outsole 210k opposite the ground engaging surface 212k and defining a series of top ridges or protrusions 215k extending into the cavity 240k.

[0139] The bottom ridge 213k and Figures 32 to 33The bottom ridges 213j of the footwear 100k are substantially identical, and thus the bottom ridges 213k extend into contact with the ground to allow the outsole 210k to bend and flex to engage the ground as the sole structure 200k rolls during use of the footwear 100k. The top ridges 215k extend into the cavity 240k to provide cushioning for the foot and to support and limit movement of the tufted shell 400 containing the particulate matter 350 located in the cavity 240k during use of the footwear 100k. In addition, the top ridges 215k can be aligned with corresponding bottom ridges of the bottom ridges 213k so that loads applied to the bottom ridges 213k are directly transferred to the corresponding top ridges 215k, thereby providing a load path between the outsole 210k and the tufted shell 400.

[0140] Reference above Figures 22 to 24 A tufted shell 400 is depicted and includes a first end 402 positioned proximate the heel portion 16 and a second end 404 positioned proximate the forefoot portion 12 when the shell 400 is received by the cavity 240k on the top ridge 215k defined by the inner surface 214k of the outsole 210k. The shell 400 may include a pocket 440 that holds the same or different amounts of particulate matter 350. Figures 22 to 24 In the case where the outsole 210 includes a protrusion 300f extending from the inner surface 214f ​​into the cavity 240f, Figure 35 A top ridge 215k of the inner surface 214k is shown extending into the cavity 240k to support the shell 400 containing the particulate material 350 instead of the protrusion 300f to provide responsive cushioning for the foot during use of the footwear 10k. When the midsole 220f and the tufted shell 400 cooperate to apply a load on the outsole 210k at the top ridge 215k during use, the responsive cushioning is further enhanced by providing a direct load path from the top ridge 215k to the corresponding bottom ridge 213k.

[0141] Figure 35 The top ridge 215k is shown supporting the tufted shell 400 and spaced apart from the midsole 220f when the sole structure 200k is not under an applied load (i.e., the sole structure 200k is in a static state). However, compressing the sole structure 200k can cause the bottom surface 222f of the midsole 220f to translate toward the outsole 210k and contact one or more top ridges 215k defined by the inner surface 214k in cooperation with the tufted shell 400 containing the particulate matter 350. Here, during gradient loading of the sole structure 200k, the top ridge 215k can compress upon contacting the bottom surface 222f due to the compression and movement of the particulate matter 350 located within the pockets 440 of the tufted shell 400.

[0142] The outsole 210k may be formed of an elastic material so that when the top ridge 215k is aligned with the Figures 22 to 24 responsive cushioning when compressed in the same manner as the protrusions 300f of the tufted shell 400. As discussed above, the compressibility of the particulate material 350 can provide soft cushioning. Thus, the top ridge 215k and the particulate material 350 located within the tufted shell 400 can cooperate to provide a gradient cushioning to the article of footwear 10k that changes with the applied load (i.e., the greater the load, the more the top ridge 215k compresses, and therefore, the more responsive the shoe 10k performs). As described above, the midsole 220f can be formed of Figures 1 to 3 The flexible material of midsole 220 is formed to provide sufficient flexibility to midsole 220f to allow particulate matter 350 received within tufted shell 400 and located in cavity 240k to interact with the contours of the bottom surface of the foot during gradient loading of sole structure 200k. In some configurations, midsole 220f or a portion of midsole 220f can be removed to provide direct contact between the bottom surface of the foot and tufted shell 400 containing particulate matter 350.

[0143] Reference Figure 36 and Figure 37 , an article of footwear 101 is provided, and the article of footwear 101 includes an upper 100 and a sole structure 2001 attached to the upper 100. Given that the components associated with the article of footwear 10 are substantially similar in structure and function to those of the article of footwear 101, the same reference numerals are used below and in the accompanying drawings to identify the same components, while the same reference numerals with letter extensions are used to identify those components that have been modified. The sole structure 2001 may include an outsole 2101 and Figures 25 to 27 The midsole 220g, the outsole 2101 and the midsole 220g are arranged in a layered configuration, and a cavity 2401 is defined between the outsole 2101 and the midsole 220g.

[0144] Reference Figure 37 ,along Figure 36 The partial cross-sectional view taken along line 37-37 of the outer sole 2101 is shown to include a ground engaging surface 2121 defining a series of bottom ridges 2131 extending away from the cavity 2401 and an inner surface 2141 disposed on the side of the outer sole 2101 opposite the ground engaging surface 2121 and defining a series of top ridges 2151 extending into the cavity 2401. The bottom ridges 2131 and the inner surface 2141 are disposed on a side of the outer sole 2101 opposite the ground engaging surface 2121 and defining a series of top ridges 2151 extending into the cavity 2401. Figures 32 to 33 The bottom ridges 213j of the outsole 210l are substantially identical, and thus the bottom ridges 213l extend into contact with the ground to allow the outsole 210l to bend and flex to engage the ground as the sole structure 200l rolls during use of the shoe 10l.

[0145] The top ridge 2151 extends into the cavity 2401 to provide cushioning for the foot during use of the shoe 101 and to support the cushioning layer 5001 and the tufted shell 400 containing the granular material 350 located in the cavity 2401. The tufted shell 400 and the cushioning layer 5001 can be sized and shaped to substantially conform to the perimeter of the midsole 220g and the outsole 2101. When the sole structure 2001 is assembled, the cushioning layer 5001 can be disposed between the distal end of the top ridge 5151 of the inner surface 2141 of the outsole 2101 and the tufted shell 400, and can contact the distal end of the top ridge 5151 of the inner surface 2141 of the outsole 2101 and the tufted shell 400.

[0146] The cushioning layer 500l may include a contoured structure that forms a plurality of bottom ridges 510l and top ridges 515l positioned along the surface of the cushioning layer 500l to define a so-called egg crate shape. In one configuration, the bottom ridges 510l and top ridges 515l are aligned with corresponding bottom ridges 213l and top ridges 215l of the outsole 210l to provide a direct load path from the tufted shell 400 to the ground during use. The cushioning layer 500l may be formed from one or more polymer foam materials, such as ethylene vinyl acetate or polyurethane. Each top ridge 215l of the outsole 210l may be aligned with a corresponding bottom ridge 510l of the cushioning layer 500 that is opposite the outsole 210l. Each top ridge 515l of the cushioning layer 500l may be opposite and in contact with a corresponding pocket 440 of the tufted shell 400. As described above, the midsole 220g may be formed from Figures 1 to 3 The flexible material of the midsole 220 is formed to provide sufficient flexibility to the midsole 220g to allow the particulate matter 350 contained within the tufted shell 400 and located in the cavity 240l to interact with the contours of the bottom surface of the foot during gradient loading of the sole structure 200l.

[0147] Figure 37Each bottom ridge 5101 of the cushioning layer 5001 is shown opposite the outsole 2101 and supported by a corresponding top ridge of the top ridge 2151 of the inner surface 2141 extending into the cavity 2401. The corresponding pairs of bottom ridges 5101 and top ridges 2151 located within the cavity 2401 can cooperate to provide elastic compressibility under applied loads to reduce ground reaction forces. For example, the paired bottom ridges 5101 and top ridges 2151 can compress against each other under load to provide a spring effect that reduces the magnitude of impact on the foot. In some examples, the space between the paired bottom ridges 5101 and top ridges 2151 can be filled with particulate material 350. In addition to the elastic compressibility provided by the paired bottom ridges 5101 and top ridges 2151, the particulate material 350 disposed in the pockets 440 of the tufted shell 400 compresses and moves during gradient loading of the sole structure 2001. As described above, the compressibility of the particulate material 350 can provide soft cushioning, while the compressibility of the bottom ridge 5101 and the top ridge 2151 can provide responsive cushioning. Thus, the outsole 2101, the cushioning layer 5001, and the particulate material 350 located within the tufted shell 400 can cooperate to provide a gradient cushioning to the article of footwear 101 that changes with the applied load (i.e., the greater the load, the more the ridges 3101, 3151, 5101, 5151 are compressed, and therefore, the more responsive the footwear 101 is). In some configurations, the midsole 220g or a portion of the midsole 220g can be removed to provide direct contact between the bottom surface of the foot and the tufted shell 400 containing the particulate material 350.

[0148] The following clauses provide exemplary configurations of the above-described sole structures for articles of footwear.

[0149] Clause 1: An article of footwear comprising an upper and an outsole, the outsole attached to the upper and comprising a ground-engaging surface and an inner surface, the inner surface being disposed on a side of the outsole opposite the ground-engaging surface. A midsole having a footbed and a bottom surface, the bottom surface being disposed on a side of the midsole opposite the footbed and opposite the inner surface of the outsole to define a cavity between the bottom surface and the inner surface of the outsole, wherein a first series of projections extends from one of the inner surface and the bottom surface in a first direction toward the other of the inner surface and the bottom surface into the cavity. The first series of projections is spaced apart from the other of the inner surface and the bottom surface. A second series of projections extends from one of the inner surface and the bottom surface in the first direction toward the other of the inner surface and the bottom surface into the cavity, the second series of projections having a height different from that of the first series of projections and being spaced apart from the other of the inner surface and the bottom surface. A quantity of particulate matter is disposed within the cavity.

[0150] Clause 2: The article of footwear of clause 1, wherein one of the interior surface and the bottom surface is an interior surface, a quantity of the particulate matter being disposed around bases of the first series of projections and around bases of the second series of projections.

[0151] Clause 3: The article of footwear according to any of the preceding clauses, wherein the first series of protrusions comprises a cross-sectional area that decreases in the first direction.

[0152] Clause 4: The article of footwear according to any of the preceding clauses, wherein the second series of protrusions comprises a cross-sectional area that decreases in the first direction.

[0153] Clause 5: The article of footwear according to any of the preceding clauses, wherein the first series of protrusions and the second series of protrusions comprise continuously tapered outer surfaces.

[0154] Clause 6: The article of footwear of clause 5, wherein the tapered outer surface terminates at a rounded distal end of each protrusion opposite the other of the inner surface and the bottom surface.

[0155] Clause 7: The article of footwear according to any of the preceding clauses, wherein the first series of protrusions are arranged proximate a heel portion of the outsole and the second series of protrusions are arranged proximate a forefoot portion of the outsole.

[0156] Clause 8: The article of footwear of clause 6, wherein the first series of projections extend further from one of the interior surface and the bottom surface than the second series of projections.

[0157] Clause 9: The article of footwear of any preceding clause, wherein the particulate matter comprises foam beads.

[0158] Clause 10: The article of footwear of Clause 9, wherein the foam beads comprise a generally spherical shape.

[0159] Clause 11: The article of footwear of clause 9, wherein the foam beads comprise substantially the same size and shape.

[0160] Clause 12: The article of footwear of clause 9, wherein the foam beads comprise at least one of different sizes and different shapes.

[0161] Clause 13: The article of footwear according to any of the preceding clauses, wherein the first series of protrusions and the second series of protrusions are separated from each other by a space disposed proximate a midfoot portion of the outsole.

[0162] Clause 14: An article of footwear comprising an upper and an outsole, the outsole attached to the upper and comprising a ground-engaging surface and an inner surface, the inner surface being disposed on a side of the outsole opposite the ground-engaging surface. The inner surface comprises a first series of protrusions and a second series of protrusions, the first series of protrusions extending in a direction toward the upper, and the second series of protrusions extending toward the upper and having a height different from that of the first series of protrusions. A midsole having a footbed and a bottom surface, the bottom surface being disposed on a side of the midsole opposite the footbed and opposite the inner surface of the outsole to define a cavity between the bottom surface and the inner surface of the outsole, the bottom surface being spaced apart from the first series of protrusions and the second series of protrusions. A quantity of particulate matter is disposed within the cavity.

[0163] Clause 15: The article of footwear according to clause 14, wherein the first series of projections comprises a cross-sectional area that decreases in a direction extending from the outsole toward the midsole.

[0164] Clause 16: The article of footwear according to any of the preceding clauses, wherein the second series of protrusions comprises a cross-sectional area that decreases in a direction extending from the outsole toward the midsole.

[0165] Clause 17: The article of footwear according to any of the preceding clauses, wherein the first series of protrusions and the second series of protrusions comprise continuously tapered outer surfaces.

[0166] Clause 18: The article of footwear of clause 17, wherein the tapered outer surface terminates at a rounded distal end of each protrusion opposite the bottom surface of the midsole.

[0167] Clause 19: The article of footwear according to any of the preceding clauses, wherein the first series of protrusions are arranged proximate a heel portion of the outsole and the second series of protrusions are arranged proximate a forefoot portion of the outsole.

[0168] Clause 20: The article of footwear according to clause 19, wherein the first series of projections extend further from the inner surface of the outsole than the second series of projections.

[0169] Clause 21: The article of footwear of any preceding clause, wherein the particulate matter comprises foam beads.

[0170] Clause 22: The article of footwear of Clause 21, wherein the foam beads comprise a generally spherical shape.

[0171] Clause 23: The article of footwear according to clause 21, wherein the foam beads comprise substantially the same size and shape.

[0172] Clause 24: The article of footwear according to clause 21, wherein the foam beads comprise at least one of different sizes and different shapes.

[0173] Clause 25: The article of footwear according to any of the preceding clauses, wherein the first series of protrusions and the second series of protrusions are separated from each other by a space disposed proximate a midfoot portion of the outsole.

[0174] Clause 26: An article of footwear comprising an upper and a midsole, the midsole having a footbed and a bottom surface, the bottom surface being disposed on a side of the midsole opposite the footbed. The bottom surface comprises a first series of protrusions and a second series of protrusions, the first series of protrusions extending away from the upper, and the second series of protrusions extending away from the upper and having a height different from that of the first series of protrusions. An outsole is attached to the upper and comprises a ground-contacting surface and an inner surface, the inner surface being disposed on a side of the outsole opposite the ground-contacting surface. The inner surface is opposed to the bottom surface of the midsole and cooperates with the bottom surface to define a cavity therebetween, and the inner surface is spaced apart from the first series of protrusions and the second series of protrusions. A quantity of particulate matter is disposed within the cavity.

[0175] Clause 27: The article of footwear according to clause 26, wherein the first series of projections comprises a cross-sectional area that decreases in a direction extending from the midsole toward the outsole.

[0176] Clause 28: The article of footwear according to any of the preceding clauses, wherein the second series of protrusions comprises a cross-sectional area that decreases in a direction extending from the midsole toward the outsole.

[0177] Clause 29: The article of footwear according to any of the preceding clauses, wherein the first series of protrusions and the second series of protrusions comprise continuously tapered outer surfaces.

[0178] Clause 30: The article of footwear according to clause 29, wherein the tapered outer surface terminates at a rounded distal end of each protrusion opposite the inner surface of the outsole.

[0179] Clause 31: The article of footwear according to any of the preceding clauses, wherein the first series of projections is opposite a heel portion of the outsole and the second series of projections is opposite a forefoot portion of the outsole.

[0180] Clause 32: The article of footwear according to clause 31, wherein the first series of projections extend further from the bottom surface of the midsole than the second series of projections.

[0181] Clause 33: The article of footwear of any preceding clause, wherein the particulate matter comprises foam beads.

[0182] Clause 34: The article of footwear according to clause 33, wherein the foam beads comprise a generally spherical shape.

[0183] Clause 35: The article of footwear according to clause 33, wherein the foam beads comprise substantially the same size and shape.

[0184] Clause 36: The article of footwear according to clause 33, wherein the foam beads comprise at least one of different sizes and different shapes.

[0185] Clause 37: The article of footwear according to any of the preceding clauses, wherein the first series of protrusions and the second series of protrusions are separated from each other by a space opposite a midfoot portion of the outsole.

[0186] Item 38: A method of manufacturing an article of footwear, the method comprising: providing a cavity between a footbed and an outsole; and providing one of the footbed and the outsole with a first series of protrusions, the first series of protrusions extending into the cavity along a first direction toward the other of the footbed and the outsole, the first series of protrusions being spaced apart from the other of the footbed and the outsole; and providing one of the footbed and the outsole with a second series of protrusions extending into the cavity along the first direction toward the other of the footbed and the outsole, the second series of protrusions being spaced apart from the other of the footbed and the outsole and having a height different from the height of the first series of protrusions; and providing the cavity with a certain amount of particulate matter.

[0187] Clause 39: The method of clause 38, wherein providing one of the footbed and the outsole with the first series of protrusions and the second series of protrusions comprises providing the outsole with the first series of protrusions and the second series of protrusions.

[0188] Clause 40: The method of clause 39, wherein providing the cavity with a quantity of particulate matter comprises providing a quantity of the particulate matter around bases of the first series of projections and around bases of the second series of projections.

[0189] Clause 41: The method of any of the preceding clauses, wherein providing one of the footbed and the outsole with the first series of projections comprises providing the first series of projections with a cross-sectional area that decreases in a direction toward the other of the footbed and the outsole.

[0190] Clause 42: The method of any of the preceding clauses, wherein providing one of the footbed and the outsole with the second series of projections includes providing the second series of projections with a cross-sectional area that decreases in a direction toward the other of the footbed and the outsole.

[0191] Clause 43: The method of any of the preceding clauses, wherein providing one of the footbed and the outsole with the first and second series of protrusions comprises providing the first and second series of protrusions with continuously tapered outer surfaces.

[0192] Clause 44: A method according to any of the preceding clauses, wherein providing the first series of protrusions and the second series of protrusions for one of the footbed and the outsole includes providing the first series of protrusions proximate a heel portion of the outsole and providing the second series of protrusions proximate a forefoot portion of the outsole.

[0193] Clause 45: The method of clause 44, wherein positioning the first series of protrusions proximate a heel portion of the outsole and positioning the second series of protrusions proximate a forefoot portion of the outsole includes causing the first series of protrusions to extend further from one of the footbed and the outsole than the second series of protrusions.

[0194] Clause 46: The method of any preceding clause, wherein providing the cavity with a quantity of particulate matter comprises providing the cavity with a quantity of foam beads.

[0195] Clause 47: The method of clause 46, wherein providing the cavity with a quantity of foam beads comprises providing the cavity with a quantity of foam beads having a generally spherical shape.

[0196] Clause 48: The method of clause 46, wherein providing the cavity with a quantity of foam beads comprises providing the cavity with a quantity of foam beads comprising substantially the same size and shape.

[0197] Clause 49: The method of Clause 46, wherein providing the cavity with a quantity of foam beads comprises providing the cavity with a quantity of foam beads comprising at least one of different sizes and different shapes.

[0198] Clause 50: The method of any of the preceding clauses, wherein providing one of the footbed and the outsole with the first and second series of protrusions includes providing a space between the first and second series of protrusions proximate a midfoot portion of the outsole.

[0199] For the purpose of illustration and description, the foregoing description has been provided. These descriptions are not intended to be exhaustive or limit the present disclosure. Each individual element or feature of a particular configuration is generally not limited to that particular configuration, but, even if not specifically shown or described, each individual element or feature of a particular configuration is interchangeable where applicable and can be used in a selected configuration. Each individual element or feature of a particular configuration can also be varied in many ways. These variations are not considered to depart from the present disclosure, and all such modifications are intended to be included within the scope of the present disclosure.

Claims

1. An article of footwear comprising: Upper; A housing, comprising: a shell top surface disposed below the upper; and a shell bottom surface defining a first divider extending between the medial and lateral sides of the article of footwear, the first divider projecting toward the shell top surface and terminating within the shell such that a gap extends between the first divider and the shell top surface; a plurality of foam beads disposed within the housing; An outsole, comprising: a ground engaging surface and an outsole top surface disposed on a side of the outsole opposite the ground engaging surface, the shell bottom surface being disposed on the outsole top surface, the outsole top surface and the ground engaging surface each being contoured upwardly to define a first recess extending at least partially between the medial and lateral sides of the article of footwear and aligned with the first divider; and a midsole disposed between the shell and the upper, wherein the midsole includes a footbed and a midsole bottom surface disposed on a side of the midsole opposite the footbed, wherein the midsole bottom surface opposes the outsole top surface to define a cavity therebetween, and a sidewall separates the midsole bottom surface from the outsole top surface to define a depth of the cavity, the shell (i) being received within the cavity and (ii) including a perimeter surrounded by the sidewall and a depth between the shell top surface and the shell bottom surface, the depth of the shell being less than the depth of the cavity, wherein the housing defines at least two dividers spaced apart from one another along a length of the housing, and at least one of the dividers has a reduced height and / or a different shape than the other dividers.

2. The article of footwear according to claim 1, wherein: The article of footwear includes a forefoot portion, a midfoot portion, and a heel portion, the first divider and the first groove being positioned proximate the forefoot portion.

3. The article of footwear according to claim 2, wherein: The divider includes a second divider offset from the first divider, and wherein the second divider extends between the medial side and the lateral side of the article of footwear and protrudes toward the shell top surface.

4. The article of footwear according to claim 3, wherein: The divider also includes a third divider offset from the second divider, and wherein the third divider extends between the medial side and the lateral side of the article of footwear and protrudes toward the shell top surface.

5. The article of footwear according to claim 4, wherein: The second divider is positioned proximate the midfoot portion, and the third divider is positioned proximate the heel portion.

6. The article of footwear according to claim 3, wherein: The second divider is located in the midfoot portion of the article of footwear.

7. An article of footwear according to any one of the preceding claims, wherein: The upper defines an interior void configured to receive a foot, the interior void housing an insole defining a footbed.

8. The article of footwear according to any one of the preceding claims, wherein: The housing is flexible and transparent.

9. The article of footwear according to claim 1 , wherein: The sidewall extends from a perimeter of the outsole of the article of footwear and is attached to the upper or the midsole.

10. The article of footwear according to any one of the preceding claims, wherein: The volume of the housing is substantially filled with the plurality of foam beads.

11. The article of footwear according to any one of the preceding claims, wherein: The first groove defines a bending area of ​​the outsole.

12. The article of footwear according to any one of the preceding claims, wherein: The outsole is secured to the upper at a tip in a forefoot region of the article of footwear.

Images