Sole structure for an article of footwear

Abstract

A sole structure for an article of footwear includes a heel region, a forefoot region, and a midfoot region disposed between the heel region and the forefoot region. The sole structure also includes a fluid-filled chamber including a first barrier layer and a second barrier layer, the first barrier layer cooperating with the second barrier layer to define: a first segment extending along a medial side of the sole structure in the heel region; a second segment extending from the medial side in the forefoot region to the lateral side in the heel region and along the lateral side of the sole structure in the heel region; and a web region disposed between and connecting the first and second segments. The first barrier layer is attached to the second barrier layer in the web region.

Description

[0001] This application is a divisional application of the invention patent application with the application date of December 12, 2018, application number 201880088661.0, and invention name “Sole structure for footwear articles”.

[0002] CROSS-REFERENCE TO RELATED APPLICATIONS

[0003] This application is a PCT international application claiming priority to U.S. Provisional Application Serial No. 62 / 598,811 filed on December 14, 2017, the entire contents of which are incorporated herein by reference. Technical Field

[0004] The present disclosure relates generally to sole structures for articles of footwear, and more particularly to sole structures incorporating a fluid-filled bladder having multiple sections. Background Art

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

[0006] Articles of footwear generally include an upper and a sole structure. The upper may be formed of any suitable material(s) to receive, secure and support the foot on the sole structure. The upper may be fitted with laces, straps or other fasteners to adjust the fit of the upper around the foot. The bottom portion of the upper, proximate the bottom surface of the foot, is attached to the sole structure.

[0007] The sole structure generally includes a layered arrangement extending between the ground and the upper. One layer of the sole structure includes an outsole, which provides wear resistance and adhesion to the ground. The outsole can be formed by rubber or other materials that impart durability and wear resistance and enhance adhesion to 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 can be partially formed by a polymer foam material that elastically compresses under an applied load to cushion the foot by weakening the ground reaction force. The midsole can additionally or alternatively be combined with a fluid-filled bladder to increase the durability of the sole structure, and to provide cushioning for the foot by elastically compressing under an applied load to reduce the ground reaction force. The sole structure can also include an insole or insole that enhances comfort, the insole or insole being located in a gap near the bottom portion of the upper, and the sole structure includes a strobel, which is attached to the upper and is arranged between the midsole and the insole or insole.

[0008] Midsoles using fluid-filled bladders typically include a bladder formed from two polymeric barrier layers that are sealed or bonded together. The fluid-filled bladder is pressurized with a fluid, such as air, and a tensile member may be incorporated within the bladder to maintain the shape of the bladder when elastically compressed under an applied load (e.g., during athletic activity). Typically, the design of the bladder focuses on balancing support for the foot and cushioning properties associated with the responsiveness of the bladder when elastically compressed under an applied load. 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. In the drawings:

[0010] Figure 1 is a side perspective view of an article of footwear in accordance with the principles of the present invention.

[0011] Figure 2 yes Figure 1 0014] An exploded view of an article of footwear is shown having an upper, a midsole, and an outsole arranged in a layered configuration.

[0012] Figure 3 yes Figure 1 0026] A bottom perspective view of an article of footwear illustrating the geometry and configuration of various sections associated with a bladder of the sole structure.

[0013] Figure 4 It is along Figure 3 The cross-sectional view taken along line 4-4 of FIG. 1 shows segments arranged in the forefoot region of the sole structure and separated from each other by the web region.

[0014] Figure 5 is along Figure 3 The cross-sectional view taken along line 5-5 of FIG. 1 shows segments arranged in the forefoot region of the sole structure and separated from each other by the web region.

[0015] Figure 6 It is along Figure 3 The cross-sectional view taken along line 6-6 of FIG. 1 shows segments arranged in the forefoot region of the sole structure and separated from each other by the web region.

[0016] Figure 7 is along Figure 3 a cross-sectional view taken along line 7-7 of FIG. 1 showing the overmolded outsole attached to the segment along the length of the sole structure;

[0017] Figure 8 is a perspective view of a first chamber of a bladder with an outsole attached.

[0018] Fig. 9 is a perspective view of the second chamber of the bladder with the outsole attached; and

[0019] Fig.10 yes Figure 1 0026] A bottom perspective view of an article of footwear illustrating the cushioning support vectors defined by the bladder of the sole structure.

[0020] Corresponding reference numerals indicate corresponding parts throughout the drawings. DETAILED DESCRIPTION

[0021] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments are provided so that the present disclosure will be thorough and the scope of the present disclosure will be fully conveyed to those skilled in the art. Many specific details, such as examples of specific components, devices, and methods, are set forth to provide a thorough understanding of the construction of the present disclosure. It will be apparent to those of ordinary skill in the art that specific details need not be employed, that the example constructions may be implemented in many different forms, and that the specific details and example constructions should not be construed as limiting the scope of the present disclosure.

[0022] The terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. As used herein, the singular forms of "one", "an" and "the" may also be intended to include plural forms unless the context clearly indicates otherwise. The terms "include", "comprise", "contain", and "have" are inclusive, and thus specify 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 combinations thereof. Unless explicitly identified as an execution order, the method steps, processes and operations described herein should not be interpreted as having to be performed in the specific order discussed or shown. Additional or alternative steps may be adopted.

[0023] When an element or layer is referred to as being "on" or "engaged to," "connected to," "attached to," or "coupled to" another element or layer, it may be directly located on, engaged, connected, attached to, or coupled to the other element or layer, or there may be intervening elements or layers. Conversely, when an element is referred to as being "directly on" or "directly engaged to," "directly connected to," "directly attached to," or "directly coupled to" another element or layer, there may be no intervening elements or layers. Other words used to describe the relationship between elements (e.g., "between" versus "directly between," "adjacent" versus "directly adjacent," etc.) should be interpreted in a similar manner. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0024] The terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and / or parts. These elements, regions, layers and / or parts should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or part from another region, layer or part. Unless the context clearly indicates, the terms such as "first", "second" and other numerical terms used in this article do not imply an order or sequence. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer or part discussed below may be referred to as a second element, component, region, layer or part.

[0025] One aspect of the present disclosure provides a sole structure for an article of footwear having an upper. The sole structure includes a heel region, a forefoot region, and a midfoot region disposed between the heel region and the forefoot region. The sole structure also includes a fluid-filled cavity that includes a first barrier layer and a second barrier layer, the first barrier layer cooperating with the second barrier layer to define: a first segment extending along a medial side of the sole structure in the heel region; a second segment extending from the medial side in the forefoot region to the lateral side in the heel region and extending along the lateral side of the sole structure in the heel region; and a web region disposed between and connecting the first segment and the second segment. The first barrier layer is attached to the second barrier layer in the web region.

[0026] Implementations of the present disclosure may include one or more of the following optional features: In some implementations, the third segment tapers continuously from the first segment to a distal end of the third segment in a direction toward the upper.

[0027] In some examples, the cavity includes a fourth segment extending around the heel region and fluidly coupled to the first segment and the second segment. Here, the cavity may include a fifth segment extending from the second segment on the medial side of the forefoot region toward the lateral side and terminating at a distal end between the medial side and the lateral side. In some examples, the first segment, the second segment, the fourth segment, and the fifth segment include a ground engaging surface, and the web area may be recessed from the ground engaging surface.

[0028] In some configurations, the cavity includes a sixth segment extending from the other of the first segment and the second segment toward one of the first segment and the second segment and terminating at a distal end between the first segment and the second segment in the heel region. The sixth segment may taper continuously from the first segment to the distal end of the sixth segment in a direction toward the upper. Here, the sixth segment is substantially parallel to the third segment, and the third segment and the sixth segment extend obliquely relative to the longitudinal axis of the sole structure.

[0029] In some configurations, at least one of the first section and the second section includes a necked region.

[0030] In some aspects, the sole structure may further include an outsole attached to at least one of the first segment, the second segment, and the third segment and including a contact pad and a plurality of serrations.

[0031] Another aspect of the present disclosure provides a sole structure for an article of footwear having an upper. The sole structure includes a heel region, a forefoot region, and a midfoot region disposed between the heel region and the forefoot region. The sole structure also includes a first cavity having a first barrier layer and a second barrier layer, the first barrier layer cooperating with the second barrier layer to define: a first segment extending along one of a medial side of the sole structure and a lateral side of the sole structure in the forefoot region; a second segment extending from a first end of the first segment toward the other of the medial side and the lateral side; a third segment extending from a second end of the first segment toward the other of the medial side and the lateral side; and a fourth segment extending from the other of the medial side and the lateral side toward one of the medial side and the lateral side.

[0032] Implementations of the present disclosure may include one or more of the following optional features. In some examples, the cavity includes a fifth segment extending along the other of the inner side and the outer side, a fourth segment extending from a first end of the fifth segment toward one of the inner side and the outer side, and a sixth segment extending from a second end of the fourth segment toward one of the inner side and the outer side, the fifth segment being disposed between the second segment and the third segment.

[0033] In some examples, the sole structure includes a second cavity having a seventh segment extending from one of the medial and lateral sides toward the other of the medial and lateral sides, the seventh segment being between the second segment and the sixth segment. Here, the third segment and the seventh segment may be disposed between the fifth segment and the sixth segment. Optionally, the first cavity includes a fluid-filled eighth segment extending around the forefoot region from a first end on one of the medial and lateral sides to a second end on the other of the medial and lateral sides. Additionally, the fifth segment and the eighth segment may be disposed between the second segment and the third segment.

[0034] In some examples, the first cavity includes a ninth segment extending from the second end of the eighth segment toward one of the inner side and the outer side. The seventh segment and the ninth segment may be substantially parallel to each other, and the third segment and the fifth segment may be substantially parallel to each other. In some configurations, the fluid-filled second segment, the third segment, the fifth segment, the sixth segment, the seventh segment, and the ninth segment may each terminate at a distal end between the inner side and the outer side.

[0035] Reference Figure 1 and Figure 2, the article of footwear 10 includes an upper 100, a midsole 200 attached to the upper 100, and an outsole 300 extending between the midsole 200 and the ground. The article of footwear 10 can be divided into one or more regions. The regions can include a forefoot region 12, a midfoot region 14, and a heel region 16. The forefoot region 12 can correspond to the toes and joints connecting the metatarsal bones and the phalanges of the foot. The midfoot region 14 can correspond to the arch region of the foot, and the heel region 16 can correspond to the rear portion of the foot, including the calcaneus. The footwear 10 can include lateral and medial sides 18, 20 that correspond to opposite sides of the footwear 10 and extend through the regions 12, 14, 16, respectively.

[0036] Upper 100 includes an interior surface defining an interior void 102 that is configured to receive and secure a foot supported on midsole 200. Upper 100 may be formed of one or more materials stitched or adhesively bonded together to form interior void 102. Suitable materials for the upper may include, but are not limited to, mesh, textiles, foams, leather, and synthetic leather. The materials may be selected and positioned to impart durability, breathability, wear resistance, flexibility, and comfort.

[0037] In some examples, upper 100 includes last 104 having a bottom surface 106 opposite midsole 200 and an opposing top surface defining foot bed 108 of interior void 102. Sutures or adhesive may secure last 104 to upper 100. Figure 4 As shown, the contour of the footbed 108 can conform to the contour of the bottom surface of the foot (e.g., the sole). Optionally, the upper 100 can also incorporate additional layers, such as an insole 110 or a sockliner, which can be disposed on the last 104 and within the interior void 102 of the upper 100 to accommodate the plantar surface of the foot to enhance the comfort of the footwear article 10. An ankle opening 112 in the heel region 16 can provide access to the interior cavity 102. For example, the ankle opening 112 can receive a foot to secure the foot within the cavity 102 and facilitate entry and removal of the foot from the interior cavity 102.

[0038] In some examples, one or more fasteners 114 extend along upper 100 to adjust the fit of interior void 102 around the foot and accommodate entry and removal of the foot therefrom. Upper 100 may include apertures 116, such as eyelets and / or other engagement features, such as fabric or mesh loops, that receive fasteners 114. Fasteners 114 may include laces, straps, cords, hooks and loops, or any other suitable type of fastener. Upper 100 may include a tongue portion 118 extending between interior cavity 102 and fasteners 114.

[0039] like Figure 4-7As shown, the midsole 200 includes a bladder 202 defined by an upper barrier layer 204 (hereinafter referred to as "upper layer 204") and a lower barrier layer 206 (hereinafter referred to as "lower layer 206"). The upper layer 204 and the lower layer 206 are joined together and bonded at a plurality of discrete locations during a molding or thermoforming process to form a flange 208 extending around the perimeter of the midsole 200 and a web area 210 extending between the lateral side 18 and the medial side 20 of the midsole 200, thereby defining a barrier layer of the bladder 202. The flange 208 and the web area 210 are disposed proximate to the upper 100 and are therefore recessed relative to the ground engaging surface 302 of the outsole 300.

[0040] The upper layer 204 of the bladder 202 is opposite and attached (e.g., connected and bonded) to the bottom surface 106 of the last 104 of the upper 100. In addition, the contour of the upper layer 204 of the bladder 202 can conform to the contour of the bottom surface of the foot to provide cushioning and support for the foot. The upper layer 204 can be formed from one or more polymer materials during a molding process or a thermoforming process and can include a peripheral edge extending upward on the outer periphery of the upper 100. The lower layer 206 of the bladder 202 is disposed on a side of the bladder 202 opposite to the upper layer 204. The lower layer 206 can include a peripheral edge extending upward toward the upper 100 and bonded to the peripheral edge of the upper layer 204 to form a flange 208. Like the upper layer 204, the lower layer 206 can be formed from the same or different polymer material as the upper layer 204 during the molding or thermoforming process.

[0041] In some embodiments, the upper layer 204 and the lower layer 206 are formed by corresponding mold parts, each of which defines various surfaces for forming depressions and extrusion surfaces, which correspond to such locations: when the lower layer 206 and the upper layer 204 are joined and combined together, the flange 208 and / or the web area 210 are formed at these locations. In some embodiments, adhesive bonding joins the upper layer 204 and the lower layer 206 to form the flange 208 and the web area 210. In other embodiments, the upper layer 204 and the lower layer 206 are joined by thermal bonding to form the flange 208 and the web area 210. In some examples, one or both of the upper layer 204 and the lower layer 206 are heated to a temperature that facilitates forming and melting. In some examples, the layers 204, 206 are heated before being placed between their corresponding molds. In other examples, the mold can be heated to increase the temperature of the layers 204, 206. In some embodiments, the molding process used to form the bladder 202 incorporates vacuum ports within the mold sections to remove air so that the upper layer 204 and the lower layer 206 are drawn into contact with the respective mold sections. In other embodiments, a fluid such as air can be injected into the region between the upper layer 204 and the lower layer 206 so that a pressure differential causes the layers 204, 206 to engage with the surfaces of their respective mold sections.

[0042] In some embodiments, the midsole 200 may include a polymer foam layer (not shown) disposed between the upper layer 204 of the bladder 202 and the upper 100. Thus, the optional foam layer of the midsole 200 serves as an intermediate layer to indirectly attach the upper layer 204 of the bladder 202 to the upper 100 by bonding the upper layer 204 of the bladder 202 to the upper 100 and / or to the bottom surface 106 of the last 104. In this manner, the optional foam layer also bonds the lower layer 206 to the outsole 300, thereby securing the midsole 200 and the outsole 300 to the upper 100. In addition, the foam layer of the footwear 10 may also reduce the extent to which the upper layer 204 extends onto the peripheral surface of the upper 100, thereby increasing the durability of the footwear 10 by reducing the likelihood that the upper layer 204 will become detached from the upper 100 during prolonged use of the footwear 10.

[0043] Reference Figure 3 , the bladder 202 includes one or more chambers 212, 214. In the example shown, the first chamber 212 extends from the midfoot region 14 to the toe portion of the forefoot region 12, and the second chamber 214 extends through the heel region 16. The second chamber 214 is fluidly coupled to the first chamber 212 by a conduit 220d, as described in more detail below.

[0044] Each of the cavities 212, 214 is defined by a plurality of segments 218a-218n, which are fluidically coupled to each other via one or more conduits 220a-220d. In some embodiments, the lower layer 206 defines the geometry (e.g., thickness, width, and length) of the plurality of segments 218a-218n and conduits 220a-220d. The lower layer 206 and the upper layer 204 can be joined and combined together in a plurality of discrete regions between the outer side 18 and the inner side 20 of the bladder 202 to form a portion of the web region 210 that defines and separates each segment 218a-218n and conduit 220a-220d. Thus, each segment 218a-218n and conduit 220a-220d is associated with such a region of the bladder 202 where the upper layer 204 and the lower layer 206 are not joined together and are therefore separated from each other to form a corresponding void.

[0045] The flange 208 and the web area 210 can cooperate to define and extend around each of the segments 218a-218n to contain a fluid (e.g., air) within the segments 218a-218n. In some examples, an area of ​​the web area 210 is defined entirely by the segments 218a-218n and / or the ducts 220a-220d, while other areas of the web area 210 are defined by a combination of the segments 218a-218n and / or the ducts 220a-220d along one of the lateral side 18 and the medial side 20 and the flange 208 along the other of the lateral side 18 or the medial side 20. In some configurations, an area of ​​the web area 210 defines a flexure zone to facilitate flexion of the footwear 10 as the midsole 200 rolls along the ground. Figure 3 As shown, no portion of the web region 210 extends continuously between the outer side 18 and the inner side 20 .

[0046] like Figure 4-7 As shown, each segment 218a-218n and conduit 220a-220d can define a substantially tubular cross-sectional shape and a thickness that extends between the upper layer 204 and the lower layer 206 substantially perpendicular to the longitudinal axis L2 of the midsole 200. As such, the thickness of each segment 218a-218n is defined by the distance that the lower layer 206 protrudes from the upper layer 204 in a direction away from the upper 100. At least two of the segments 218a-218n can define different thicknesses. For example, one or more segments 218j-218m disposed in the heel region 16 can have a greater thickness than a thickness associated with one or more segments 218a-218i disposed in the forefoot region 12 or the midfoot region 14. As shown in FIG. Figure 7 As shown, the thickness of the midsole 200 gradually decreases from the heel area 16 to the forefoot area 12 to provide a greater degree of cushioning to absorb the larger ground reaction forces that initially occur in the heel area 16 and decrease as the forefoot area 12 of the midsole 200 rolls to engage the ground.

[0047] Each of the segments 218a-218n and conduits 220a-220d can be filled with a pressurized fluid (i.e., gas, liquid) to provide cushioning and stability to the foot during use of the footwear 10. In some embodiments, the compressibility of a first portion of the plurality of segments 218a-218n of the chambers 212, 214 under an applied load provides a responsive type of cushioning, while a second portion of the segments 218a-218n of the chambers 212, 214 can be configured to provide a soft type of cushioning under an applied load. Thus, the segments 218a-218n of the bladder 202 can cooperate to provide a gradient cushioning for the article of footwear 10 that changes as the applied load changes (i.e., the greater the load, the more the segments 218a-218n are compressed, and thus the footwear 10 performs a faster response).

[0048] In other embodiments, one or more cushioning materials (e.g., polymer foam and / or particulate matter (neither shown)) are surrounded by one or more of the segments 218a-218n to provide cushioning for the foot, instead of or in addition to the pressurized fluid. In these embodiments, the cushioning materials can cause one or more of the segments 218a-218n to have different cushioning characteristics than the segments 218a-218n filled with the pressurized fluid. For example, the cushioning materials can be more or less responsive or provide greater shock absorption than the pressurized fluid.

[0049] In some embodiments, the overmolded portion extends over a portion of the bladder 202 to provide increased durability and resilience to the cavities 212, 214 when a load is applied. The overmolded portion may extend over the forefoot region 12, the midfoot region 14, and / or the heel region 16 by attaching to the lower layer 206 to provide enhanced durability and resilience to the bladder 202, wherein the separation distance between the lower layer 206 and the upper layer 204 is greater, or to provide increased thickness in a specific area of ​​the bladder 202 (e.g., the heel region 16). In some examples, the overmolded portion is bonded to the lower layer 206 and includes at least one of a different thickness, a different hardness, and a different material than the lower layer 206. The overmolded portion may be limited to the area of ​​the lower layer 206 that partially defines the cavities 212, 214 located in the forefoot region 12, the midfoot region 14, and the heel region 16, and therefore, the flange 208 and the web region 210 may not be free of the overmolded portion. Thus, the overmolded portion may partially define the plurality of segments 218a - 218q .

[0050] The outsole 300 is attached to the midsole 200 and conforms in shape to the midsole 200. In some examples, the outsole 300 includes a ground engaging surface 302 and an opposing inner surface 304 that is attached to the area of ​​the lower layer 206 defining the segments 218a-218n. Thus, the outsole 300 may include a plurality of segments, each segment defining a shape that conforms to the shape of the corresponding segment 218a-218l, whereby the outsole 300 is absent in the area between the segments 218a-218q, thereby exposing the flange 208 and the web area 210 of the bladder 202. The outsole 300 generally provides wear resistance and friction to the ground, and may be formed of one or more materials that impart durability and wear resistance and enhance traction to the ground. For example, rubber may form at least a portion of the outsole 300.

[0051] The ground engaging surface 302 may define a plurality of contact pads 306 and serrations 308 that protrude from the ground engaging surface 302 in a direction away from the upper 100. Each contact pad 306 defines a substantially flat portion of the ground engaging surface and is intermittently spaced along the segments 218a-218l. In particular, one of the contact pads 306 may be disposed at each intersection of adjacent ones of the segments 218a-218l such that a first portion of one of the contact pads 306 extends along a first one of the segments 218a-218l and a second portion of one of the contact pads 306 extends along a second one of the segments 218a-218l. Additionally or alternatively, the contact pads 306 may extend along the length of the fluid-filled segments 218a-218l to impart traction and stability in the midfoot region 14 and the forefoot region 12. Sawtooth 308 includes a plurality of protrusions evenly spaced along ground engaging surface 302 of outsole 300 to provide increased traction. In particular, serration 308 is configured to engage soft ground to improve traction.

[0052] As described above, in the illustrated example, the outsole 300 is formed as an overmolded portion. Thus, the outsole 300 can be integrally formed with the lower layer 206 of the bladder 202 using an overmolding process. In other examples, the outsole 300 can be formed separately from the lower layer 206 of the bladder 202 and can be adhesively bonded to the lower layer 206.

[0053] refer to Figure 3 , 8 9, the geometry and configuration of the bladder 202 are shown with reference to a bottom perspective view of the footwear 10. As described above, the bladder 202 includes a first chamber 212 and a second chamber 214 having a plurality of segments 218a-218n and conduits 220a-220d defining a fluid network. At least one of the segments 218a-218n may have a different length than the other segments 218a-218n. As described above, the segments 218a-218n are formed in areas of the midsole 200 where the upper layer 204 and the lower layer 206 are separated and spaced apart from each other to define respective voids for enclosing a pressurized fluid or a cushioning material. As such, flange 208 and web region 210 correspond to regions of bladder 202 where upper layer 204 and lower layer 206 are joined and bonded, and cooperate to define and define the perimeter of each segment 218a-218n, thereby sealing the pressurized fluid therein. Thus, segments 218a-218n may be disposed within corresponding regions of regions 12, 14, 16 of midsole 200, and may be separated from one another by web region 210. In other words, one or more segments 218a-218n may cooperate to define corresponding regions of web region 210.

[0054] In some embodiments, at least two of the segments 218a-218n extend along the lateral side 18 of the midsole 200, while at least two other segments 218a-218n extend along the medial side 20 of the midsole 200. Furthermore, some of the segments 218a-218n extend between the lateral side 18 of the midsole 200 and the medial side 20 of the midsole 200. For example, at least one segment 218a-218n may extend from one of the lateral side 18 and the medial side 20 to the other of the lateral side 18 and the medial side 20. Additionally or alternatively, at least one of the segments 218a-218n extends from one of the lateral side 18 and the medial side 20 to a distal end 222 that terminates at a location between the medial side 20 and the lateral side 18. Here, distal end(s) 222 may taper in a direction toward upper 100 (ie, lower layer 206 tapers toward upper layer 204 of bladder 202 such that the thickness of segments 218a - 218n decreases in a direction toward distal end 222 ).

[0055] In some embodiments, the segments 218a-218n are in fluid communication with each other, either directly or through conduits 220, to form a single pressure system for bladder 202. The single pressure system directs fluid through the segments 218a-218n as the segments 218a-218n compress or expand when a load is applied to provide cushioning and stability and support by attenuating ground reaction forces, particularly during forward running motion of footwear 10. Alternatively, one or more of the segments 218a-218n may be fluidly isolated from the other segments 218a-218n so that at least one of the segments 218a-218n may be pressurized differently.

[0056] In some configurations, at least two adjacent segments 218a-218n are connected to one another at a bend 224 or turn, whereby each segment connected by a corresponding bend 224 extends in a different direction from one another. Each bend 224 is associated with an inner radius that extends toward the periphery of the midsole 200. In some examples, the radius of each bend 224 is at least 3 mm. Moreover, each bend 224 is disposed adjacent the periphery of the midsole 200 on the side of the corresponding segment 218a-218n opposite the flange 208. By positioning the bend 224 on opposite sides of the segments 218a-218n from the flange 208, collapse of the segments 218a-218n is limited during directional excursions between loads applied to the midsole 200.

[0057] Reference Figure 3 and Figure 8In some examples, the first cavity 212 includes a plurality of segments 218a-218h and conduits 220a-220b extending from the forefoot region 12 to the midfoot region 14. The first segment 218a extends along the lateral side 20 in the forefoot region 12. The second segment 218b extends from a first end of the first segment 218a toward the lateral side 18, and the third segment 218c extends from a second end of the first segment 218a toward the lateral side 18. The second segment 218b and the third segment 218c each terminate at a distal end 222b, 222c disposed between the lateral side 18 and the medial side 20. The second segment 218b and the third segment 218c diverge from each other in a direction from the medial side 20 to the lateral side 18.

[0058] The fourth segment 218d extends along the lateral side of the midsole 200 in the forefoot region 12. The fifth segment 218e extends from a first end of the fourth segment 218d toward the medial side 20 in the forefoot region 12, and the sixth segment 218f extends from an opposite second end of the fourth segment 218d toward the lateral side 18 in the midfoot region 14. Each of the fifth segment 218e and the sixth segment 218f terminates at a distal end 222e, 222f disposed between the lateral side 18 and the medial side 20. The fifth segment 218e extends between the second segment 218b and the third segment 218c, and the third segment 218c extends between the fifth segment 218e and the sixth segment 218f. The fifth segment 218e diverges from the sixth segment 218f in a direction from the medial side 20 to the lateral side 18. In addition, the fifth segment 218e is adjacent to the third segment 218c and extends substantially parallel to the third segment 218c. Fig.10 shown.

[0059] Still refer to Figure 3 , the seventh segment 218g extends around the toe portion of the forefoot region 12 from a first end disposed at the medial side 20 of the midsole 200 to a second end disposed at the lateral side 18 of the midsole 200. The eighth segment 218h extends from the second end of the seventh segment 218g toward the lateral side 18 and terminates at a distal end 222h between the medial side 20 and the lateral side 18. The distal end 222h of the eighth segment 218h extends between the second segment 218b and the fifth segment 218e.

[0060] like Figure 3 and 9 As shown, the second cavity 214 includes a ninth segment 218i disposed within the forefoot region 12 and extending from the medial side 20 toward the lateral side 18. The ninth segment 218i terminates at a distal end 222i between the medial side 20 and the lateral side 18 and extends between the third segment 218c and the sixth segment 218f of the first cavity 212.

[0061] The second chamber 214 also includes a tenth segment 218j having a first portion extending from the ninth segment 218i of the medial side 20 of the forefoot region 12 to the lateral side 18 of the heel region 16 and a second portion extending along the lateral side 18 of the heel region 16. Thus, the first portion of the tenth segment 218j traverses the midfoot region 14 at an angle oblique to the longitudinal axis L of the midsole 200. The eleventh segment 218k extends along the medial side 20 in the heel region 16 and includes a first end fluidly coupled to the first portion of the tenth segment 218j by the conduit 220d. The twelfth segment 218l of the second chamber 214 extends from the tenth segment 218j of the lateral side 18 to the eleventh segment 218m of the medial side 20 around the heel region 16. The twelfth segment 218l may be fluidly coupled to each of the tenth segment 218j and the eleventh segment 218k.

[0062] The second cavity 214 also includes a pair of anchoring segments 218p, 218n extending transversely to the longitudinal axis L. For example, the first anchoring segment 218p extends from the tenth segment 218j and / or the twelfth segment 218l along the outer side 20 toward the inner side and terminates at a distal end 222m between the tenth segment 218j and the eleventh segment 218k. Similarly, the second anchoring segment 218n extends from the eleventh segment 218k along the inner side 20 toward the outer side 18 and terminates at a distal end 222n between the eleventh segment 218k and the tenth segment 218j. The second anchoring segment 218n and the first anchoring segment 218m extend along axes 30p, 30q that are substantially parallel to the longitudinal axis L and are at an oblique angle relative to the longitudinal axis L, such as Fig.10 shown.

[0063] As described above, each of the sections 2181 to 218o of the second chamber 214 can be filled with a pressurized fluid to impart desired cushioning and response characteristics. Additionally or alternatively, one or more of the sections 218a-218n can include a cushioning material (not shown) to provide cushioning characteristics different from the pressurized fluid. For example, the tenth section 218o can include a polymer foam cushioning material to increase the absorption of the initial impact of the footwear 10 with the ground.

[0064] like Figure 3-6 As shown, the segments 218a-218l on which the first and second cavities 212, 214 of the outsole 300 are formed may include a necked region 226 disposed in the middle of the contact pad 306. The necked region 226 defines an area of ​​reduced thickness of the segments 218a-218l such that the ground engaging surface 302 is recessed from the ground. Figure 3 As shown, the necked regions 226 of the chambers 212, 214 include serrations 308 and are configured to provide secondary engagement with the ground when the bladder 202 is compressed into the ground.

[0065] In some examples, each of the segments 218b, 218c, 218e, 218f, 218h, 218i extends generally in a direction from the outer side 18 to the inner side 20. Fig.10 As shown, the third segment 218c and the fifth segment 218e extend in parallel along a first direction transverse to the longitudinal axis L, while the second segment 218b and the eighth segment 218h extend in parallel along a second direction transverse to the longitudinal axis L. Therefore, the segments 218b, 218c, 218e, 218f, 218h, 218i are configured to be continuously compressed as the outsole 300 rolls to engage the ground while the footwear 10 performs a running motion to provide cushioning for the foot. The web area 210 can separate the segments 218b, 218c, 218e, 218f, 218h, 218i from each other so that the web area 210 defines a flexion section extending from the forefoot region 12 through the midfoot region 14. The lateral arrangement of segments 218b, 218c, 218e, 218f, 218h, 218i relative to the longitudinal axis L and the web area 210 separating segments 218b, 218c, 218e, 218f, 218h, 218i allow segments 218b, 218c, 218e, 218f, 218h, 218i to compress under applied loads, thereby providing cushioning for the forefoot by attenuating ground reaction forces during running motion, while also damping oscillations of the foot when segments 218b, 218c, 218e, 218f, 218h, 218i are in compression.

[0066] like Figure 3 , 8 9, the distal end 222 includes a compound tapered portion in which the thickness T and width of the segments 218b, 218c, 218e, 218f, 218h, 218i, 218m, 218n both decrease in a direction toward the distal end 222. The tapered distal end 222 serves as an anchor point for the respective segments 218b, 218c, 218e, 218f, 218h, 218i, 218m, 218n and as an anchor point for the entire balloon 202 to maintain its shape when loads such as shear forces are applied thereto.

[0067] Reference Figure 3 , Figure 8 and Fig. 9, the first chamber 212 includes a first conduit 220a, which fluidly couples the first end of the seventh segment 218g to the first end of the first segment 218a along the inner side 20. The second conduit 220b fluidly couples the second end of the seventh segment 218g to the first end of the fourth segment 218d along the outer side 18. Therefore, all of the segments 218a-218h of the first chamber 212 are in direct or indirect fluid communication with each other. Similarly, the second end of the first segment 218a is fluidly coupled to the first end of the tenth segment 218j along the inner side 20 through the third conduit 220c, thereby fluidly coupling the first chamber 212 to the second chamber 214. As described above, the conduit 220d fluidly couples the first end of the eleventh segment 218k to the middle portion of the tenth segment 218j adjacent to the inner side 20. Relative to the conduits 220a-220c, the conduits 220 can be arranged in an alternative or additional arrangement. For example, a catheter may be included in a region of balloon 202 between outer side 18 and inner side 20 .

[0068] Figure 4 Provides along Figure 3 The cross-sectional view taken along line 4-4 shows the midsole 200 in the forefoot region 12, with the midsole 200 arranged in reference Figure 1 and Figure 2 The insole 110, the last 104 of the upper 100, and the upper layer 204 of the bladder 202 in the described layered construction. As provided above, the peripheral edge of the lower layer 206 can extend upward toward the upper 100 and join with the peripheral edge of the upper layer 204 to form a flange 208 along the medial side 20 and the lateral side 18. The lower layer 206 of the bladder 202 can also extend toward the upper 100 and join with the upper layer 204 to form a region of the web area 210 that extends between and separates the sections 218a, 218e. For example, the section 218a extending along the medial side 20 of the midsole 200 is defined by the flange 208 and the web area 210 formed at the medial side 20, while the section 218e extending from the section 218a at the lateral side 18 to the medial side 20 is defined by the flange 208 and the web area 210 formed at the lateral side 18. The distal end 222e of the segment 218e tapers in a direction toward the upper 100 and terminates in a web region 210 formed at a location between the lateral side 18 and the medial side 20 . Figure 4 The section line (see Figure 3 ) is taken through one of the necked regions 226 of the first segment 218a, wherein the thickness of the first segment 218a is reduced and the ground engaging surface 302 of the first segment 218a is spaced from the ground.

[0069] Outsole 300 is attached to each of sections 218a, 218d, 218e and conforms in shape thereto. In some examples, contact pad 306 extends from outsole 300 in a direction away from upper 100 and along respective lengths of sections 218a, 218c, 218d to provide increased traction against the ground.

[0070] Figure 5 Provides along Figure 3 The cross-sectional view taken along line 5-5 of FIG. 1 shows the midsole 200 in the forefoot region 12, with the midsole 200 disposed in reference to FIG. Figure 1 and Figure 2 The insole 110, the last 104 of the upper 100, and the upper layer 204 of the bladder 202 in the described layered construction. The peripheral edge of the lower layer 206 can extend upward toward the upper 100 and join with the peripheral edge of the upper layer 204 to form a flange 208 along the medial side 20 and the lateral side 18. The lower layer 206 of the bladder 202 can also extend toward the upper 100 and join with the upper layer 204 to form a region of the web area 210 that extends between and separates the sections 218d, 218i. For example, the section 218d extending along the lateral side 18 of the midsole 200 is defined by the flange 208 and the web area 210 formed at the lateral side 18, while the section 218f extending from the section 218j at the medial side 20 toward the lateral side 18 is defined by the flange 208 and the web area 210 formed at the medial side 20. The distal end 222i of the segment 218f tapers in a direction toward the upper 100 and terminates in a web region 210 formed at a location between the lateral side 18 and the medial side 20 . Figure 5 Section line 5-5 (see Figure 3 ) is taken through one of the necked regions 226 of the fourth segment 218d, wherein the thickness of the fourth segment 218d is reduced and the ground engaging surface 302 of the fourth segment 218d is spaced from the ground.

[0071] Outsole 300 is attached to each of sections 218d, 218i, 218j and conforms in shape thereto. In some examples, contact pad 306 extends from outsole 300 in a direction away from upper 100 and along respective lengths of sections 218d, 218i, 218j to provide increased traction against the ground.

[0072] Figure 6 Provides along Figure 3 A cross-sectional view taken along line 6-6 of FIG. 1 shows the midsole 200 in the heel region 16 with a configuration in reference to FIG. Figure 1 and Figure 2The upper layer 204 of the insole 110, the last 104 and the bladder 202 in the described layered construction. The peripheral edge of the lower layer 206 can extend upward toward the upper 100 and join with the peripheral edge of the upper layer 204 to form a flange 208 along the medial side 20 and the lateral side 18. Figure 6 , the lower layer 206 protrudes away from the upper layer 204 in a direction away from the upper 100 to define a tenth segment 218j along the lateral side 18, an eleventh segment 218k along the medial side 20, and a first anchoring segment 218m defining the second cavity 214. Figure 6 The section line (see Figure 3 ) is taken through one of the necked regions 226 of the tenth segment 218j, wherein the thickness of the tenth segment 218j is reduced and the ground engaging surface 302 of the tenth segment 218j is spaced from the ground.

[0073] Figure 7 Provides along Figure 3 The cross-sectional view taken along line 7-7 of FIG. 1 shows the midsole 200 and outsole 300 extending through the heel region 16, the midfoot region 14, and the forefoot region 12. Figure 1 and Figure 2 As described in the footwear 10 of the embodiment, the outsole 300 is attached to portions of the lower layer 206 in areas where the cavities 212, 214 protrude away from the upper 100 to provide increased durability and resilience to the bladder 202 in the heel area 16, the midfoot area 14, and the forefoot area 12. In addition, segments 218b, 218c, 218e, 218f, 218h-j, 218l-n extend between the lateral side 18 and the medial side 20. With respect to Figure 7 In the view of the web area 210, the web area 210 can be divided and extended between the segments 218b, 218c, 218e, 218f, 218h-j, 218l-n. In some examples, the segments 218a-218i extend into the forefoot region 12 and are associated with a smaller thickness than the segments 218j-218l in the heel region 16 and / or the midfoot region 14.

[0074] Figure 8A bottom perspective view of segments 218a, 218b, 218d, 218e, 218g, 218h is provided, which are fluidly connected to each other and disposed within the forefoot region 12 of the midsole 200. In some examples, the segments 218b, 218e, 18h extend between the lateral side 18 and the medial side 20 to distal ends 222b, 222e, 222h that terminate at a location between the lateral side 18 and the medial side 20. The distal ends 222b, 222e, 222h can taper in a direction toward the upper 100. The taper of the distal ends 222b, 222e, 222h of the segments 218b, 218e, 18h can serve as anchor points for the segments 218b, 218e, 18h when under an applied load.

[0075] Fig. 9 A bottom perspective view of segments 218j-218h is provided, which are fluidly connected to each other and are located within the heel region 16 of the midsole 200. In some examples, segments 218m, 218n extend between the lateral side 18 and the medial side 20 to distal ends 222m, 222n that terminate at a location between the tenth segment 218j and the eleventh segment 218k. The distal ends 222m, 222n can taper in a direction toward the upper 100. The taper of the distal ends 222m, 222n of the segments 218m, 218n can serve as anchor points for the segments 218m, 218n when under an applied load.

[0076] Fig.10 Provided Figure 1A bottom perspective view of an article of footwear 10 is shown, which shows a plurality of cushioning support vectors 30a-30l defined by segments 218a-218l. More specifically, the longitudinal axis of each of segments 218a-218l defines a corresponding one of the cushioning support vectors 30a-30l. An applied load associated with a direction parallel to the cushioning support vector causes one or more of the segments to substantially maintain their shape without collapsing to provide support and stability to the foot in those areas. On the other hand, an applied load associated with a direction transverse to the cushioning support vector causes one or more corresponding segments to compress and collapse, thereby providing cushioning to the foot in those areas by attenuating the ground reaction forces associated with the applied load. The longitudinal cushioning support vectors 30a, 30d, 30k, 30j2 can extend in the direction of the longitudinal axis L of the midsole 200, while the lateral cushioning support vectors 30b, 30c, 30e, 30f, 30h, 30i extend transversely to the longitudinal axis L of the midsole 200. For example, the lateral cushioning support vectors 30b, 30c, 30e, 30f, 30h, 30i may define an angle within fifteen degrees (15°) relative to a direction perpendicular to the longitudinal axis L of the midsole 200. The seventh, tenth and twelfth segments 218g, 218j, 218l each define a composite cushioning support vector 30g 1,2 ,30j1,30l 1,2 , wherein the angled and / or curved sections 218g , 218j , 218l provide a degree of responsive support along the longitudinal and lateral directions of the midsole 200 .

[0077] During forward motion (e.g., walking or running motion), loads applied to the midsole 200 are associated with directions parallel to the longitudinal cushioning support vectors 30a, 30d, 30k, 30j2 to cause the respective segments 218a, 218d, 218k, 218j to be in shear, thereby causing the respective segments 218a, 218d, 218k, 218j to maintain their shape (e.g., not compress) and provide support and stability as the outsole rolls to engage the ground through the heel region 16 and the midfoot region 14. The web region 210 extending between the segments 218a, 218d, 218k, 218j reduces the torsional forces acting on the segments 218a, 218d, 218k, 218j when loads are applied, thereby damping oscillations of the foot while providing a gradient response type of cushioning.

[0078] During lateral movement, such as a shifting or cutting movement, the load applied to the midsole 200 is associated with a direction that is lateral and generally perpendicular to the longitudinal cushioning support vectors 30a, 30d, 30k, 30j2. Thus, when the applied load is in a direction toward the medial side 20 of the midsole 200, the segments 218a, 218k defining one of the vectors 30a, 30k will compress to provide cushioning for the medial side of the foot, while when the applied load is in a direction toward the lateral side 18 of the midsole 200, the segments 218d, 218j defining the other vectors 30d, 30j will compress to provide cushioning for the lateral side of the foot.

[0079] In some embodiments, a series of lateral cushioning support vectors 30b, 30c, 30e, 30f, 30h, 30i are disposed within the midfoot region 14 and the forefoot region 12 and extend in a direction transverse to the longitudinal axis L of the midsole 200. During forward motion, such as walking or running motion, loads applied to the midsole 200 are associated with directions transverse to the lateral cushioning support vectors 30b, 30c, 30e, 30f, 30h, 30i. Accordingly, the corresponding segments 218b, 218c, 218e, 218f, 218h, 218i defining corresponding ones of the vectors 30b, 30c, 30e, 30f, 30h, 30i sequentially compress and collapse to provide cushioning to the metatarsal region of the foot by pushing away from the ground. The direction of the vectors 30b, 30c, 30e, 30f, 30h, 30i relative to the direction of the applied load and the length of the corresponding segments 218b, 218c, 218e, 218f, 218h, 218i determine how the segments will compress to attenuate the ground reaction forces.

[0080] During lateral movement such as an offset or cutting motion, the load applied to the midsole 200 is associated with a direction generally parallel to or only slightly transverse to the lateral cushioning support vectors 30b, 30c, 30e, 30f, 30h, 30i to cause the corresponding segments 218b, 218c, 218e, 218f, 218h, 218i to be placed under shear forces, thereby causing the corresponding segments 218b, 218c, 218e, 218f, 218h, 218i to maintain their shape (e.g., not compressed or slightly compressed) and provide support and stability to the metatarsal region of the foot in response to the footwear 10 performing lateral movement.

[0081] As described above, the midsole 200 also defines a series of composite cushioning support vectors 30g 1,2 ,30j1,30l 1,2, each is constructed to provide a degree of longitudinal cushioning and responsiveness as well as lateral cushioning and responsiveness, thereby complementing the lateral cushioning support vectors 30b, 30c, 30e, 30f, 30h, 30i and the longitudinal cushioning support vectors 30a, 30d, 30k, 30j2.

[0082] The segments 218a-218h associated with the chambers 212, 214 may cooperate to enhance the functionality and cushioning properties provided by conventional midsoles while providing enhanced stability and support to the foot by damping oscillations of the foot that occur in response to ground reaction forces during use of the footwear 10. For example, during forward motion (e.g., a walking or running motion), a load applied to the midsole 200 may cause the segments 218a-218n to compress, thereby providing cushioning to the foot by attenuating ground reaction forces, while other segments 218a-218n may retain their shape to impart stability and support properties to damp oscillations of the foot relative to the footwear 10 that occur in response to the initial impact of the ground reaction forces.

[0083] In addition, one or more of the segments 218a-218n may interact with the web area 210 in different areas 12, 14, 16 of the midsole 200 to provide isolated areas of responsive cushioning. For example, the segments 218j-218l in the heel area 16 may define corresponding portions of the web area 210 to provide responsive cushioning in the heel area 16 by causing the segments 218j-218l around the perimeter of the heel area 16 to absorb the initial impact of ground reaction forces by creating a trampoline effect as the segments 218j-218l continue to compress, thereby providing a gradient of responsive cushioning in the heel area 16.

[0084] Additionally, the geometry and positioning of segments 218a-218n along the midsole 200 may enhance traction between the outsole 300 and the ground during forward movement as the outsole 300 rolls to engage the ground from the heel region 16 to the forefoot region, and during lateral movement as the outsole 300 rolls to engage the ground from one of the lateral side 18 and the medial side 20 to the other of the lateral side 18 and the medial side 20.

[0085] The following clauses provide exemplary constructions of the above-described articles of footwear.

[0086] Item 1: A sole structure for an article of footwear having an upper, the sole structure comprising: a heel region, a forefoot region, a midfoot region disposed between the heel region and the forefoot region, and a cavity, comprising a first barrier layer and a second barrier layer, the first barrier layer cooperating with the second barrier layer to define: a first segment extending along the medial side of the sole structure in the heel region; a second segment extending from the medial side in the forefoot region to the lateral side in the heel region and extending along the lateral side of the sole structure in the heel region; a third segment extending from one of the first segment and the second segment toward the other of the first segment and the second segment and terminating at a distal end between the first segment and the second segment; and a web region disposed between and connecting the first segment and the second segment, wherein the first barrier layer is attached to the second barrier layer within the web region.

[0087] Clause 2: The sole structure of Clause 1, wherein the third section tapers continuously from the first section to a distal end of the third section in a direction toward the upper.

[0088] Clause 3: The sole structure of Clause 1, wherein the cavity may further include a fourth segment extending around the heel region and fluidly coupled to the first segment and the second segment.

[0089] Clause 4: The sole structure of clause 3, wherein the cavity may include a fifth segment extending from the second segment at the medial side of the forefoot region toward the lateral side and terminating at a distal end between the medial side and the lateral side.

[0090] Clause 5: The sole structure of clause 4, wherein the first segment, the second segment, the fourth segment, and the fifth segment include a ground engaging surface.

[0091] Clause 6: The sole structure of clause 5, wherein the web area is recessed from the ground engaging surface.

[0092] Clause 7: The sole structure of Clause 4, wherein the cavity includes a sixth segment extending from the other of the first segment and the second segment toward one of the first segment and the second segment and terminating at a distal end between the first segment and the second segment in the heel region.

[0093] Clause 8: The sole structure according to clause 7, wherein the sixth section tapers continuously from the first section to the distal end of the sixth section in a direction toward the upper.

[0094] Clause 9: The sole structure of clause 8, wherein the sixth segment is substantially parallel to the third segment, and the third segment and the sixth segment extend at an oblique angle relative to a longitudinal axis of the sole structure.

[0095] Clause 10: The sole structure of Clause 1, wherein at least one of the first section and the second section includes a necked region.

[0096] Clause 11: The sole structure of clause 1, further comprising an outsole attached to at least one of the first segment, the second segment, and the third segment and comprising a contact pad and a plurality of serrations.

[0097] Item 12: A sole structure for an article of footwear having an upper, the sole structure comprising: a heel region, a forefoot region, a midfoot region disposed between the heel region and the forefoot region, and a first cavity, the first cavity comprising a first barrier layer and a second barrier layer, the first barrier layer and the second barrier layer cooperating to define: a first segment extending along one of the medial side of the sole structure and the lateral side of the sole structure in the forefoot region; a second segment extending from a first end of the first segment toward the other of the medial side and the lateral side; and a third segment extending from the second end of the first segment toward the other of the medial side and the lateral side; and a fourth segment extending from the other of the medial side and the lateral side toward one of the medial side and the lateral side.

[0098] Item 13: A sole structure according to Item 12, wherein the first cavity includes a fifth segment extending along the other of the medial side and the lateral side, a fourth segment extending from a first end of the fifth segment toward one of the medial side and the lateral side, and a sixth segment extending from a second end of the fourth segment toward one of the medial side and the lateral side, and the fifth segment is arranged between the second segment and the third segment.

[0099] Clause 14: The sole structure of clause 13, wherein the sole structure includes a second cavity having a seventh segment extending from one of the medial side and the lateral side toward the other of the medial side and the lateral side and between the second segment and the sixth segment.

[0100] Clause 15: The sole structure of Clause 14, wherein the third segment and the seventh segment are disposed between the fifth segment and the sixth segment.

[0101] Clause 16: The sole structure of clause 14, wherein the first cavity includes an eighth segment extending around the forefoot region from a first end on one of the medial side and the lateral side to a second end on the other of the medial side and the lateral side.

[0102] Clause 17: The sole structure of Clause 16, wherein the fifth segment and the eighth segment are disposed between the second segment and the third segment.

[0103] Clause 18: The sole structure of clause 16, wherein the first cavity includes a ninth segment extending from the second end of the eighth segment toward one of the medial side and the lateral side.

[0104] Clause 20: The sole structure of clause 18, wherein the third segment and the fifth segment are substantially parallel to each other.

[0105] Clause 21: The sole structure of clause 18, wherein the fluid-filled second, third, fifth, sixth, seventh, and ninth segments each terminate at a distal end between the medial side and the lateral side.

[0106] For the purpose of illustration and description, the foregoing description has been provided. It is not intended to be exhaustive or limit the present disclosure. The individual elements or features of a particular configuration are generally not limited to that particular configuration, but are interchangeable where applicable, and may be used in a selected configuration even if not specifically shown or described. It may also be varied in many ways. Such variations should not be 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. A sole structure for an article of footwear having an upper, the sole structure comprising: Heel area; Forefoot area; a midfoot region disposed between the heel region and the forefoot region; and a cavity including a first barrier layer and a second barrier layer, the first barrier layer cooperating with the second barrier layer to define: a first segment extending along a medial side of the sole structure in the heel region; a second section extending from the medial side in the forefoot region to the lateral side in the heel region and extending along the lateral side of the sole structure in the heel region; a web region disposed between and connecting the first and second sections, wherein the first barrier layer is connected to the second barrier layer in the web region; a third section extending from the second section toward the lateral side on the medial side of the forefoot region and terminating at a distal end between the medial side and the lateral side; a fourth section extending between and connecting the first and second sections, wherein the fourth section extends around the heel region from the medial side to the lateral side; a fifth section extending from one of the first and second sections toward the other of the first and second sections, wherein the fifth section terminates in the heel region at a position between the first and second sections; and a sixth section extending from the other of the first and second sections toward one of the first and second sections, wherein the sixth section terminates in the heel region at a position between the first and second sections; Wherein, the fifth segment and the sixth segment extend along substantially parallel axes, and the axes are at an oblique angle relative to a longitudinal axis of the sole structure.

2. The sole structure according to claim 1, wherein: The distal end of the third section tapers in a direction toward the shoe upper.

3. The sole structure according to claim 1, wherein: The fourth section fluidly couples the first section and the second section.

4. The sole structure according to claim 1, wherein: At least one of the fifth section and the sixth section includes a distal end that tapers in a direction toward the upper.

5. The sole structure according to any one of claims 1 to 4, wherein: The fifth section is spaced apart from the sixth section.

6. An article of footwear comprising the sole structure according to any one of claims 1-5.

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