Sole structure for an article of footwear
By introducing a multi-chamber bladder structure and conduit connection into the sole structure, a gradient cushioning system is formed, which solves the shortcomings of existing soles in terms of cushioning and support, improves the responsiveness and durability of the sole, and meets the needs of diverse sports.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NIKE INNOVATE CV
- Filing Date
- 2018-12-12
- Publication Date
- 2026-06-09
AI Technical Summary
Existing shoe sole structures are inadequate in terms of cushioning and support, especially in terms of responsiveness and durability to ground reaction forces in different areas, making it difficult to meet the diverse sports needs.
It adopts a multi-chamber bladder structure, including a first chamber and a second chamber. The chambers are fluidly connected by conduits. Combined with polymer materials and the outsole, it forms a gradient cushioning system, providing multi-layer cushioning and support, and enhancing the durability and responsiveness of the sole.
It achieves a gradient cushioning effect, improving the responsiveness and stability of the sole under different sports conditions, and enhancing the durability and comfort of the sole.
Smart Images
Figure CN122163022A_ABST
Abstract
Description
[0001] This application is a divisional application of the invention patent application filed on December 12, 2018, with application number 202211235232.6 and invention title "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 / 598,822, filed on December 14, 2017, the entire contents of which are incorporated herein by reference. Technical Field
[0004] This disclosure generally relates to sole structures for footwear articles, and more specifically to sole structures incorporating fluid-filled bladders having multiple segments. Background Technology
[0005] This section provides background information relating to this disclosure, which is not necessarily prior art.
[0006] Footwear typically consists of an upper and a sole structure. The upper can be formed from any suitable material (of various kinds) to receive, secure, and support the foot within the sole structure. The upper can be fitted with laces, straps, or other fasteners to adjust the fit around the foot. The bottom portion of the upper, closest to the sole surface of the foot, is attached to the sole structure.
[0007] The sole construction typically comprises a layered arrangement extending between the ground and the upper. One layer of the sole construction includes an outsole, which provides abrasion resistance and traction to the ground. The outsole may be formed of rubber or other materials that impart durability and abrasion resistance as well as enhanced traction. Another layer of the sole construction includes a midsole layer disposed between the outsole and the upper. The midsole layer provides cushioning for the foot and may be partially formed of a polymer foam material that elastically compresses under applied loads to cushion the foot by reducing ground reaction forces. The midsole layer may additionally or alternatively incorporate fluid-filled bladders to increase the durability of the sole construction and to cushion the foot by elastically compressing under applied loads to reduce ground reaction forces. The sole construction may also include an insole or insole for enhanced comfort, located within a gap near the bottom portion of the upper, and the sole construction includes a strobel attached to the upper and disposed between the midsole layer and the insole or insole.
[0008] Insole midsoles using fluid-filled bladders typically consist of a bladder formed by two barrier layers of polymer material sealed or bonded together. The fluid-filled bladder is pressurized with a fluid such as air and may incorporate tension members within the bladder to maintain its shape when elastically compressed under applied loads, such as during athletic activity. Typically, the bladder is designed with a focus on balancing support for the foot with cushioning properties related to its responsiveness to elastic compression under applied loads. Attached Figure Description
[0009] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this disclosure. In the drawings:
[0010] Figure 1 This is a side perspective view of a footwear item according to the principles of the present invention.
[0011] Figure 2 yes Figure 1 An exploded view of footwear shows a footwear item with an upper, midsole, and outsole arranged in a layered construction.
[0012] Figure 3 yes Figure 1 A bottom perspective view of a footwear item, showing the geometry and construction of multiple segments associated with the bladder of the sole structure.
[0013] Figure 4 It is along Figure 3 The sectional view taken by line 4-4 shows the sections arranged in the forefoot area of the sole structure and separated from each other by the ventral area.
[0014] Figure 5 It is along Figure 3 The sectional view taken by line 5-5 shows the sections arranged in the forefoot area of the sole structure and separated from each other by the ventral area.
[0015] Figure 6 It is along Figure 3 The sectional view taken by line 6-6 shows the sections arranged in the forefoot area of the sole structure and separated from each other by the ventral area.
[0016] Figure 7 It is along Figure 3 The sectional view taken along line 7-7 shows the overmolded outsole attached to the segment along the length of the sole structure;
[0017] Figure 8 This is a perspective view of the first cavity of the sac with the outer floor attached.
[0018] Figure 9 yes Figure 1 A bottom perspective view of a footwear item, showing the cushioning support vector defined by the bladder of the sole structure.
[0019] Throughout the accompanying figures, corresponding reference numerals denote the corresponding parts. Detailed Implementation
[0020] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. Exemplary embodiments are provided so that this disclosure will be thorough and will fully convey the scope of the disclosure to those skilled in the art. Numerous specific details, such as examples of particular components, apparatus, and methods, are set forth to provide a thorough understanding of the construction of this disclosure. It will be apparent to those skilled in the art that specific details are not required, that the exemplary constructions may be implemented in many different forms, and that the specific details and exemplary constructions should not be construed as limiting the scope of this disclosure.
[0021] The terminology used herein is for the purpose of describing particular exemplary embodiments only and is not intended to be limiting. As used herein, the singular forms “a,” “an,” and “the” may also be intended to include the plural forms unless the context clearly indicates otherwise. The terms “comprising,” “including,” “containing,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. Unless expressly identified as the order of execution, the method steps, processes, and operations described herein should not be construed as necessarily having to be performed in the specific order discussed or shown. Additional or alternative steps may be employed.
[0022] When an element or layer is referred to as being “on top of” another element or layer, or “joined to,” “connected to,” “attached to,” or “linked to” another element or layer, it may be directly located, joined, connected, attached to, or linked to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as being “directly on” another element or layer, or “directly joined to,” “directly connected to,” “directly attached to,” or “directly linked to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” vs. “directly between,” “adjacent” vs. “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the associated listed items.
[0023] 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 are used only to distinguish one element, component, region, layer, or part from another. Unless the context clearly indicates otherwise, terms such as “first,” “second,” and other numerical terms used herein do not imply 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 the second element, component, region, layer, or part.
[0024] One aspect of this disclosure provides a sole structure for footwear articles having an upper. The sole structure includes a heel region, a forefoot region including a toe portion, and a midfoot region disposed between the heel region and the forefoot region. The sole structure also includes a pocket comprising a first blocking layer and a second blocking layer, the first blocking layer cooperating with the second blocking layer to define a first cavity and a second cavity, the first cavity defining the outer periphery of the heel region, the second cavity extending from the midfoot region through the forefoot region, and including a plurality of segments extending from the medial side of the sole structure to the lateral side of the sole structure, said plurality of segments including a plurality of reservoirs.
[0025] Embodiments of this disclosure may include one or more of the following optional features. In some embodiments, each segment of the second cavity includes an inner reservoir adjacent to the inner side and an outer reservoir adjacent to the outer side, the inner reservoir being fluidly connected to the outer reservoir via a first conduit. Each segment may also include a central reservoir disposed between the inner reservoir and the outer reservoir. The sole structure may also include an outsole attached to the pouch and including a plurality of contact pads, each of which may be formed on one of the reservoirs. The inner reservoir may be fluidly connected to the central reservoir via the first conduit, and the outer reservoir may be connected to the central reservoir via a second conduit.
[0026] In some examples, the inner reservoir defines an elongated hemispherical shape having a main axis extending inward, the outer reservoir defines an elongated hemispherical shape having a main axis extending outward, and the central reservoir defines an elongated hemispherical shape whose main axis intersects the main axes of the inner and outer reservoirs. Here, multiple segments may include a first segment, a second segment, and a third segment, with the second segment disposed longitudinally between the first and third segments. The central reservoir of the third segment may be disposed between the inner and outer reservoirs of the second segment. Optionally, the central reservoir of the second segment may be disposed between the inner and outer reservoirs of the first segment. The inner reservoir of the first segment can be fluidly connected to the inner reservoir of the second segment via a third conduit, and the outer reservoir of the first segment can be fluidly connected to the outer reservoir of the second segment via a fourth conduit.
[0027] Another aspect of this disclosure provides a sole structure for footwear articles having an upper. The sole structure includes a heel region, a forefoot region including a toe portion, and a midfoot region disposed between the heel region and the forefoot region. The sole structure also includes a first cavity extending from the midfoot region to the forefoot region and including a plurality of ribs extending from the inside to the outside of the sole structure, each rib including an inner reservoir formed along the inside of the sole structure, an outer reservoir formed along the outside of the sole structure, and a central reservoir disposed between the inner reservoir and the outer reservoir.
[0028] Aspects of this disclosure may include one or more of the following optional features. In some configurations, the inner reservoir of each rib defines a main axis extending along the inner side of the sole structure, the outer reservoir of each rib defines a main axis extending along the outer side of the sole structure, and the central reservoir of each rib defines a main axis extending transversely to the longitudinal axis of the sole structure. Each rib may include an outer conduit for fluidly connecting the central reservoir to the outer reservoir and an inner conduit for fluidly connecting the central reservoir to the inner reservoir.
[0029] In some embodiments, the first cavity includes a first rib, a second rib, and a third rib, wherein the second rib is disposed between the first and second ribs along the longitudinal axis of the sole structure. Here, the outer reservoir of the first rib is fluidly connected to the outer reservoir of the second rib via a first conduit, and the outer reservoir of the second rib is fluidly connected to the outer reservoir of the third rib via a second conduit. Optionally, the inner reservoir of the first rib can be fluidly connected to the inner reservoir of the second rib via a third conduit, and the inner reservoir of the second rib can be fluidly connected to the inner reservoir of the third rib via a fourth conduit.
[0030] In some examples, the central reservoir of the first rib is positioned between the inner and outer reservoirs of the second rib. The main axis defined by the central reservoir of one of the ribs may be positioned in front of the auxiliary axis defined by the inner and outer reservoirs of one of the ribs.
[0031] In some configurations, the first cavity further includes a first segment extending from the inside to the outside around the forefoot region and connected via a first conduit to an inner reservoir of a first rib in the rib and via a second conduit to an outer reservoir of the first rib in the rib. Here, the sole structure may also include: a second cavity surrounding the heel region; and a third cavity disposed in the midfoot region of the sole structure between the first and second cavities.
[0032] Reference Figure 1 and Figure 2 The footwear article 10 includes an upper 100, a sole interlayer 200 attached to the upper 100, and an outsole 300 extending between the sole interlayer 200 and the ground. The footwear article 10 may be divided into one or more regions. The regions may include a forefoot region 12, a midfoot region 14, and a heel region 16. The forefoot region 12 may correspond to the toes and joints connecting the metatarsals and phalanges of the foot. The midfoot region 14 may correspond to the arch region of the foot, while the heel region 16 may correspond to the posterior portion of the foot, including the calcaneus. The footwear 10 may include lateral and medial sides 18 and 20, respectively, corresponding to opposite sides of the footwear 10 and extending through regions 12, 14, and 16.
[0033] The upper 100 includes an inner surface defining an internal cavity 102 configured to receive and secure the foot to the midsole 200. The upper 100 may be formed from one or more materials stitched or bonded together to form the internal cavity 102. Suitable materials for the upper may include, but are not limited to, mesh, textiles, foam, leather, and synthetic leather. Materials can be selected and positioned to impart durability, breathability, abrasion resistance, flexibility, and comfort.
[0034] In some examples, the upper 100 includes a last 104 having a bottom surface 106 opposite to the sole interlayer 200 and a top surface opposite to the footbed 108 defining an internal void 102. The last 104 can be secured to the upper 100 using stitching or adhesive. Figure 4As shown, the contour of the footbed 108 can conform to the contour of the sole surface of the foot (e.g., the sole). Optionally, the upper 100 can also incorporate additional layers, such as an insole 110 or a shoe insole, which can be disposed on the last 104 and located within the internal cavity 102 of the upper 100 to accommodate the sole surface of the foot, thereby enhancing the comfort of the footwear article 10. Ankle opening 112 in the heel region 16 provides access to the internal cavity 102. For example, ankle opening 112 can receive the foot to secure it within the cavity 102 and facilitate entry into and exit from the internal cavity 30.
[0035] In some examples, one or more fasteners 114 extend along the upper 100 to adjust the fit of the internal cavity 102 around the foot and to accommodate entry and exit of the foot. The upper 100 may include openings 116, such as eyelets, and / or other engagement features, such as fabric or mesh loops receiving the fasteners 114. The fasteners 114 may include laces, straps, cords, hooks and loops, or any other suitable type of fastener. The upper 100 may include a tongue-like portion 118 extending between the internal cavity 102 and the fasteners 114.
[0036] like Figure 4-7 As shown, the midsole 200 includes a pocket 202 defined by an upper blocking layer 204 (hereinafter referred to as "upper layer 204") and a lower blocking layer 206 (hereinafter referred to as "lower layer 206"). The upper layer 204 and the lower layer 206 are joined together and bonded at multiple discrete locations during molding or thermoforming to form a flange 208 extending around the periphery of the midsole 200 and a ventral region 210 extending between the outer side 18 and the inner side 20 of the midsole 200, thereby defining the blocking layer of the pocket 202. The flange 208 and the ventral region 210 are disposed close to the upper 100 and are therefore recessed relative to the ground contact surface 302 of the outsole 300.
[0037] The upper layer 204 of the pouch 202 is opposite to and attached (e.g., connected and joined) to the bottom surface 106 of the last 104 of the upper 100. Additionally, the contour of the upper layer 204 of the pouch 202 may conform to the contour of the sole surface of the foot to provide cushioning and support. The upper layer 204 may be formed from one or more polymer materials during a molding or thermoforming process and may include an outer peripheral edge extending upward on the outer periphery of the upper 100. The lower layer 206 of the pouch 202 is disposed on the side of the pouch 202 opposite to the upper layer 204. The lower layer 206 may include an outer peripheral edge extending upward toward the upper 100 and engaging with the outer peripheral edge of the upper layer 204 to form a flange 208. Like the upper layer 204, the lower layer 206 may be formed from the same or different material as the upper layer 204 during the molding or thermoforming process.
[0038] In some embodiments, the upper layer 204 and the lower layer 206 are formed by respective mold portions, each mold portion defining various surfaces for forming recesses and extrusion surfaces, the extrusion surfaces corresponding to locations where flanges 208 and / or web regions 210 are formed when the lower layer 206 and the upper layer 204 are joined and bonded together. In some embodiments, the upper layer 204 and the lower layer 206 are bonded together to form flanges 208 and web regions 210. In other embodiments, the upper layer 204 and the lower layer 206 are bonded together by thermal bonding to form flanges 208 and web regions 210. In some examples, one or both of the upper layer 204 and the lower layer 206 are heated to a temperature conducive to forming and melting. In some examples, the layers 204, 206 are heated before being placed between their respective molds. In other examples, the molds may be heated to increase the temperature of the layers 204, 206. In some embodiments, the molding process for forming the capsule 202 incorporates a vacuum port within the mold portion to remove air, causing the upper layer 204 and the lower layer 206 to be drawn into contact with their respective mold portions. In other embodiments, a fluid such as air may be injected into the region between the upper layer 204 and the lower layer 206, causing an increase in pressure that results in the layers 204, 206 bonding to the surfaces of their respective mold portions.
[0039] 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 connecting the upper layer 204 of the bladder 202 to the upper 100 and / or to the bottom surface 106 of the last 104. The optional foam layer may also connect the lower layer 206 to the outsole 300, thereby securing the midsole 200 and the outsole 300 to the upper 100. Furthermore, the foam layer of the footwear 10 may reduce the extent to which the upper layer 204 extends beyond the outer surface of the upper 100, thus increasing the durability of the footwear 10 by reducing the likelihood of the upper layer 204 detaching from the upper 100 during long-term use.
[0040] In some embodiments, the overmolded portion extends over a portion of the bladder 202 to provide increased durability and resilience to cavities 212, 214 when a load is applied. The overmolded portion can extend over the forefoot region 12, midfoot region 14, and / or 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 increased thickness is provided in specific areas of the bladder 202 (e.g., the heel region 16). In some examples, the overmolded portion is incorporated into the lower layer 206 and includes at least one of a different thickness, different stiffness, and different material than the lower layer 206. The overmolded portion may be limited to partially defining a section of the lower layer 206 located in the heel region 16 and midfoot region 14; therefore, the flange 208 and web region 210 may not have an overmolded portion.
[0041] In some examples, the outsole 300 includes a ground-contacting surface 302 and an opposing inner surface 304 attached to regions defining cavities 212, 214, 216 of the underlying layer 206. Therefore, the outsole 300 may include multiple segments, each defining a shape conforming to the shape of a corresponding cavity 212, 214, 216, such that the outsole 300 is absent in the regions between cavities 212, 214, 216, thereby exposing the flange 208 and the ventral region 210 of the bladder 202. The outsole 300 typically provides abrasion resistance and traction against the ground and may be formed of one or more materials that impart durability and abrasion resistance as well as enhanced traction against the ground. For example, rubber may form at least a portion of the outsole 300.
[0042] The ground contact surface 302 of the outsole 300 may be defined by a plurality of contact pads 306. In some examples, the contact pads 306 extend from the lower layer 206 of the pocket 202 in a direction away from the upper 100 to provide increased traction with respect to the ground. The contact pads 306 may have a shape corresponding to the ground contact surface 302 of the outsole 300. For example, one of the contact pads 306 may be formed on each of the reservoirs 220, 222, 224, and may have an elliptical or rectangular shape corresponding to the elongated hemispherical shape of one or more of the reservoirs 220, 222, 224. The contact pads 306 may also position the sole surface of the foot higher above the ground. Reference Figure 8 The contact pad 306 may include recesses or gaps 308 to impart improved traction and responsiveness.
[0043] As described above, in the illustrated example, the outsole 300 is formed as an overmolded portion. Therefore, the outsole 300 can be integrally formed with the lower layer 206 of the pouch 202 using an overmolding process. In other examples, the outsole 300 can be formed separately from the lower layer 206 of the pouch 202 and can be adhesively bonded to the lower layer 206.
[0044] Reference Figure 3 The sac 202 includes one or more cavities 212, 214. In the illustrated example, a first cavity 212 extends from the midfoot region 14 to the toe portion of the forefoot region 12, a second cavity 214 extends through the heel region 16, and a third cavity 216 is disposed within the midfoot region between the first cavity 212 and the second cavity 216. In the illustrated example, the first cavity 212 is indirectly fluidly connected to the second cavity 214 via the third cavity 216. Alternatively or additionally, the first cavity 212 may be directly fluidly connected to the second cavity 214.
[0045] In some embodiments, the lower layer 206 defines the geometry (e.g., thickness, width, and length) of a plurality of cavities 212, 214, 216. The lower layer 206 and the upper layer 204 may be connected and joined together in a plurality of discrete regions between the outer side 18 and the inner side 20 of the sac 202 to define the ventral region 210 and separate portions of the cavities 212, 214, 216. Thus, each cavity 212, 214, 216 is associated with such a region of the sac 202 where the upper layer 204 and the lower layer 206 are not connected together and are therefore separated from each other to form a corresponding void.
[0046] The flange 208 and the web region 210 may cooperate to define and surround each extension of the cavities 212, 214, 216 to contain fluid (e.g., air) within the sac 202. In some examples, the area of the web region 210 is entirely defined by the cavities 212, 214, 216 and defines a flexure segment to facilitate the flexion of the footwear 10 as the sole interlayer 200 rolls along the ground. Figure 3 As shown, no part of the web region 210 extends continuously between the outer side 18 and the inner side 20.
[0047] refer to Figure 4-7Each cavity 212, 214, 216 can define a generally tubular cross-sectional shape and thickness, which extends substantially perpendicular to the longitudinal axis L of the sole interlayer 200 between the upper layer 204 and the lower layer 206. Thus, the thickness of each cavity 212, 214, 216 is defined by the distance by which the lower layer 206 protrudes away from the upper layer 204 in a direction away from the upper 100. At least two of the segments 218a-218g of the first cavity 212 and the second cavity 214 can define different thicknesses. For example, segments 218e-218g disposed in the heel region 16 can have a greater thickness than one or more associated thicknesses of segments 218a-218d disposed in the forefoot region 12. Furthermore, the thickness within any of the segments 218a-218e can be variable, such that a first portion of one of the segments 218a-218e has a different thickness than a second portion of one of the segments 218a-218e. Figure 7 As shown, the thickness of the midsole 200 gradually decreases from the heel region 16 to the forefoot region 12 to provide greater cushioning and absorb larger ground reaction forces that initially occur in the heel region 16 and decrease as the midsole 200 rolls into contact with the ground in the forefoot region 12. In some examples, a third cavity 216 is provided in the midfoot region 14 and is associated with a smaller thickness than the first and second cavities 212 and 214, such that the lower layer 206 is recessed from the ground contact surface 302 of the outsole 300.
[0048] Each of cavities 212, 214, and 216 may be filled with a pressurized fluid (i.e., gas or liquid) to provide cushioning and stability for the foot during use of footwear 10. In some embodiments, the first portion of cavities 212, 214, and 216 provides responsive cushioning due to compressibility under applied load, while the second portion of cavities 212, 214, and 216 may be configured to provide soft cushioning under applied load. Thus, cavities 212, 214, and 216 of sac 202 may cooperate to provide gradient cushioning for footwear article 10, which changes with the applied load (i.e., the greater the load, the more cavities 212, 214, and 216 are compressed, and therefore the faster the response of footwear 10).
[0049] In other embodiments, instead of or in addition to pressurized fluid, one or more cushioning materials (e.g., polymer foams and / or particulate matter (all not shown)) surround one or more of cavities 212, 214, 216 to provide foot cushioning. In these embodiments, the cushioning material may cause portions of one or more of cavities 212, 214, 216 to have cushioning properties different from the cushioning properties of the fluid-filled portions of cavities 212, 214, 216. For example, the cushioning material may be more or less responsive to or provide greater shock absorption than the pressurized fluid.
[0050] refer to Figure 3 The bottom perspective view of footwear 10 shows the geometry and construction of cavities 212, 214, and 216. As described above, cavities 212, 214, and 216 are formed in areas of the sole interlayer 200 in which the upper layer 204 and the lower layer 206 are separated from and spaced apart from each other to define corresponding gaps for surrounding pressurized fluid or cushioning material. Thus, the flange 208 and the web region 210 correspond to the regions of the bladder 202, in which the upper layer 204 and the lower layer 206 are connected and joined, and cooperate to define and define the periphery of each cavity 212, 214, and 216, thereby sealing the pressurized fluid therein.
[0051] In some embodiments, cavities 212, 214, and 216 are fluidly connected to each other to form a single pressure system for the bladder 202. This single pressure system directs fluid through cavities 212, 214, and 216 as they compress or expand under load to provide cushioning and stability and support by reducing ground reaction forces, particularly during forward running motion of the footwear 10. Alternatively, one or more of cavities 212, 214, and 216 may be fluidly isolated from the other cavities 212, 214, and 216, allowing at least one of the segments 218a-218g to be pressurized differently.
[0052] In some examples, the first cavity 212 includes a plurality of segments 218a-218d spaced apart from the forefoot region 12 to the midfoot region of the sole interlayer 200 and extending from the outer side 18 to the inner side 20. As shown, segments 218a-218d of the first cavity 212 define a U-shaped rib extending continuously from the outer side 18 to the inner side 20 of the sole interlayer 200. In one example, the first cavity 212 includes three segments 218a-218c spaced apart from the forefoot region 12 to the midfoot region 14 and a fourth segment 218d extending continuously around the toe portion of the forefoot region 12. As described below, each of segments 218a-218c includes a plurality of discretely formed reservoirs 220, 222, 224 interconnected by conduits 226, 228.
[0053] Each of segments 218a-218c includes an outer reservoir 220a-220c disposed adjacent to the outer side 18 of the sole interlayer 200, a central reservoir 222a-222c disposed between the outer side 18 and the inner side 20, and an inner reservoir 224a-224c disposed adjacent to the inner side 20 of the sole interlayer 200. The outer reservoir 220a-220c of each of segments 218a-218c defines an elongated hemisphere with its main axis 30a1-30c1 extending along the outer side 18 of the sole interlayer 200. Similarly, the inner reservoir 224a-224c of each of segments 218a-218c may also define an elongated hemisphere with its main axis 30a3-30c3 extending along the inner side 20 of the sole interlayer 200. The central reservoirs 222a-222c of each of segments 218a-218c define an elongated hemisphere, with their main axes 30a2-30c2 extending transversely to each of the outer 18 and inner 20. More specifically, the main axis of each central reservoir 222a-222c is substantially perpendicular to the longitudinal axis L of the footwear 10.
[0054] The first cavity 212 also includes a fourth segment 218d that extends from a first end on the outer side 18 to a second end on the inner side 20 around the toe portion of the forefoot region 12. In one example, the fourth segment 218d is a continuously formed, fluid-filled segment. In other examples, the fourth segment 218d may include a separate reservoir similar to segments 218a-218c of the first cavity 212.
[0055] Still referencing Figure 3 The first cavity 212 includes a plurality of conduits 226, 228, 230, and 232 that are fluidly connected to reservoirs 220, 222, and 224. Each of the segments 218a-218c includes a corresponding outer conduit 226a-226c that fluidly connects the outer reservoirs 220a-220c to the central reservoirs 222a-222c, and a corresponding inner conduit 228a-228c that fluidly connects the inner reservoirs 224a-224c to the central reservoirs 222a-222c.
[0056] In addition to the reservoirs 220, 222, and 224 of each of the corresponding segments 218a-218c being fluidly connected to each other, adjacent segments of segments 218a-218d are fluidly connected to each other along the outer side 18 and the inner side 20 via a plurality of longitudinal conduits 230a-230f. For example, the outer end of segment 218d is connected to the first outer reservoir 220a of the first segment 218a via the first longitudinal conduit 230a, and the inner end of segment 218d is connected to the first inner reservoir 224a via the second longitudinal conduit 232a. Similarly, the first outer reservoir 220a is fluidly connected to the second outer reservoir 220b via the third longitudinal conduit 230b, and the first inner reservoir 224a is fluidly connected to the second inner reservoir 224b via the fourth longitudinal conduit 232b. Furthermore, the second outer reservoir 220b is fluidly connected to the third outer reservoir via a fifth longitudinal conduit 230c, and the second inner reservoir 224b is fluidly connected to the third inner reservoir 224c via a sixth longitudinal conduit 232c. The longitudinal conduits extend substantially along the outer 18 and inner 20 of the sole interlayer 200. Additionally or alternatively, adjacent reservoirs in the central reservoirs 222a-222c of each segment 218a-218c may be fluidly connected to each other via conduits (not shown). In some examples, two or more outer conduits 226 and / or longitudinal conduits 230 of adjacent segments in segments 218a-218c may be fluidly connected to each other via sub-conduits (not shown).
[0057] In some examples, segments 218a-218c and reservoirs 220, 222, 224 are in fluid communication with each other to form a single pressure system for the first chamber 212. This single pressure system, when a load is applied, directs fluid through reservoirs 220, 222, 224 as they compress or expand to provide cushioning and stability and support by reducing ground reaction forces, particularly during forward running motion of the footwear 10. Alternatively, one or more of reservoirs 220, 222, 224 may be fluidly isolated from the other reservoirs 220, 222, 224, allowing segments 218a-218d or at least one of reservoirs 220, 222, 224 to be pressurized differently.
[0058] like Figure 3As shown, the central reservoirs 222a-222c of each of segments 218a-218c are arranged closer to the toes of the footwear 10 than the corresponding outer and inner reservoirs 220a-220c, 224a-220c of each segment 218a-218c. For example, the main axes 30a2-30c2 of each central reservoir 222a-222c are positioned in front of the auxiliary axes 32a1-32c1, 32a3-32c3 of the corresponding outer and inner reservoirs 220a-220c, 224a-220c. Therefore, each of segments 218a-218c defines a horseshoe shape, opening toward the heel area 16 of the sole interlayer 200. Furthermore, the central storage 222b of the second segment 218b may be partially disposed between the outer storage 220a and the inner storage 224a of the first segment 218a, while the central storage 222c of the third segment 218c may be partially disposed between the outer storage 220b and the inner storage 224b of the second segment 218b.
[0059] In some configurations, the second cavity 214 includes a series of connecting segments 218e-218g surrounding the heel region 16 of the midsole 200. A fifth segment 218e extends within the heel region 16 along the outer side 18 of the midsole 200, a sixth segment 218f extends within the heel region 16 along the inner side 20 of the midsole 200, and a seventh segment 218g extends around the heel region 16 and fluidly connects to the fifth and sixth segments 218e and 218f. Thus, the second cavity 214 can generally define a horseshoe shape, with the seventh segment 218g connecting to the fifth and sixth segments 218e and 218f at a corresponding location on the outer side 18 and inner side 20. In some examples, the length of the sixth segment 218f is greater than the length of the fifth segment 218e. For example, the seventh segment 218g may extend laterally toward the midfoot region 14 more far than it extends along the inner side 20. Therefore, compared to the fifth segment which can extend along the outer side 18, the sixth segment 218f can extend a greater distance along the inner side 20 of the heel area 16 of the sole interlayer 200.
[0060] Each of segments 218e-218g may be filled with pressurized fluid to impart cushioning properties. However, as described above, instead of pressurized fluid or in addition to pressurized fluid, at least one of segments 218e-218g of the second cavity 214 may include one or more cushioning materials to provide cushioning and responsiveness different from the pressurized fluid of the other segments 218e-218g. For example, the seventh segment 218g may include cushioning material instead of a fluid-filled cavity, such that the seventh segment 218g is configured to absorb the initial impact of ground reaction forces.
[0061] like Figure 3As shown, the third cavity 216 includes a fluid-filled reservoir disposed in the midfoot region 14 of the sole structure, between the outer side 18 and the inner side 20. In some examples, the third cavity 216 defines an elongated hemisphere with its main axis 30h extending substantially along the longitudinal axis L of the sole interlayer 200. The toe-facing end of the third cavity 216 is disposed between the outer reservoir 220c and the inner reservoir 224c of the third segment 218c, and the heel-facing end of the third cavity 216 is disposed between the fifth segment 218e and the sixth segment 218f of the second cavity 214.
[0062] The third cavity 216 is fluidly connected to the first cavity 212 via a first pair of conduits 234. For example, the first conduit 234 fluidly connects the third cavity 216 directly to the third outer reservoir 220c of the first cavity 212, and the second conduit 234 fluidly connects the third cavity 216 directly to the third inner reservoir 224c of the first cavity. Similarly, the third and fourth conduits 234 fluidly connect the third cavity 216 directly to each of the fifth segment 218e and the sixth segment 218f of the second cavity 214.
[0063] Figure 4 Provided along Figure 3 The sectional view taken along line 4-4 shows the sole interlayer 200 in the forefoot region 12, with a layer arranged in reference... Figure 1 and Figure 2 The layered structure includes an insole 110, a last 104 for the upper 100, and an upper layer 204 for the pouch 202. The outer peripheral edge of the lower layer 206 may extend upward toward the upper 100 and connect with the outer peripheral edge of the upper layer 204 to form a flange 208 along the inner side 20 and the outer side 18. The lower layer 206 of the pouch 202 may also extend toward the upper 100 and connect with the upper layer 204 to form a region of the belly region 210, which extends between and separates the reservoirs 220a and 224a. For example, the outer reservoir 220a is defined by the belly region 210 and the flange 208 formed at the outer side 18, while the inner reservoir 224a is defined by the belly region 210 and the flange 208 formed at the inner side 20.
[0064] Outsole 300 is attached to and conforms to each of the reservoirs 220a, 224a. In some examples, contact pad 306 extends from outsole 300 in a direction away from upper 100 and along the respective length of reservoirs 220a, 224a to provide increased traction to the ground.
[0065] Figure 5 Provided along Figure 3 The sectional view taken by line 5-5 shows the sole interlayer 200 in the forefoot region 12, wherein it has a layer arranged in reference... Figure 1 and Figure 2The layered structure includes the insole 110, the last 104 of the upper 100, and the upper layer 204 of the pouch 202. The outer peripheral edge of the lower layer 206 may extend upward toward the upper 100 and connect with the outer peripheral edge of the upper layer 204 to form a flange 208 along the inner side 20 and the outer side 18. As shown, the lower layer 206 is spaced apart from the upper layer 204 from the outer side 18 to the inner side 20. For example, the lower layer 206 defines an outer reservoir 220b, an outer conduit 226b, a central reservoir 222b, an inner conduit 228b, and an inner reservoir 224b continuously across the sole interlayer 200 from the outer side 18 to the inner side 20.
[0066] Outsole 300 is attached to and conforms to each of reservoirs 220b, 222b, and 224b. In some examples, contact pad 306 extends from outsole 300 away from upper 100 and along the respective length of reservoirs 220a and 224a to provide increased traction to the ground.
[0067] Figure 6 Provided along Figure 3 The sectional view taken by line 6-6 shows the sole interlayer 200 in the forefoot region 16, with a layer arranged in reference... Figure 1 and Figure 2 The layered structure includes the insole 110, the last 104 of the upper 100, and the upper layer 204 of the pouch 202. The outer peripheral edge of the lower layer 206 can extend upward toward the upper 100 and connect with the outer peripheral edge of the upper layer 204 to form a flange 208 along the inner side 18 and the outer side 20. Relative to... Figure 6 In the view, the lower layer 206 protrudes away from the upper layer 204 in a direction away from the upper 100 to define a corresponding extension 218e, 218f along the outer side 18 and the inner side 20.
[0068] In some implementations, relative to Figure 6 In the view, the fifth segment 218e extending along the outer side 18 and the sixth segment 218f extending along the inner side 20 each include a semi-tubular cross-sectional shape to facilitate inward and / or outward rolling of the midsole 200 during lateral movements. Each of the segments 218e and 218f may further include a necking region 236 formed between adjacent contact pads 306 and having a reduced thickness to allow the segments 218e and 218f to absorb the initial impact of ground reaction forces, thereby compressing before applying ground reaction forces to the necking region 236. Thus, a trampoline effect is generated as the fluid-filled segments 218e and 218f are continuously compressed, providing gradient-responsive cushioning as the outsole 300 rolls to engage with the ground.
[0069] Figure 7 Provided along Figure 3 The sectional view taken along line 7-7 shows the upper 100, the midsole 200, and the outsole 300 extending through the heel region 16, the midfoot region 14, and the forefoot region 12. (See above reference.) Figure 1 and Figure 2 As described in footwear 10, the outsole 300 is attached to a portion of the lower layer 206 in areas of the cavities 212, 214 protruding away from the upper 100 to provide increased durability and elasticity to the fossa 202 in the heel area 16, midfoot area 14, and forefoot area 12. Furthermore, segments 218a-218d, 218g extend between the lateral side 18 and the medial side 20. Relative to Figure 7 In the view, the web region 210 may be separated and extended between segments 218a-218d and 218g. In some examples, segments 218a-218d extend into the forefoot region 12 and are associated with a thickness smaller than that of segments 218j-218l in the heel region 16 and / or the midfoot region 14.
[0070] Figure 8 A bottom perspective view of segments 218a, 218b, and 218d is provided, these segments being fluidly connected to each other and disposed within the forefoot region 12 of the sole interlayer 200. In some examples, the outsole 300 includes a shape consistent with the shape and profile of segments 218a, 218b, and 218d (and segments 218c and 218e-g), and is attached to segments 218a-218g by melting and / or adhesive.
[0071] Figure 9 Provided Figure 1A bottom perspective view of the footwear article 10 shows a plurality of cushioning support vectors 30 defined by segments 218a-218l. More specifically, the longitudinal axis 30 of each of segments 218a-218l defines a corresponding one of the cushioning support vectors 30a-30g. 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, thereby providing support and stability for 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 for the foot in those areas by reducing the ground reaction force associated with the applied load. The longitudinal cushioning support vectors 30a1-30c1, 30a3-30c3, 30e, 30f may extend along the longitudinal axis L of the sole interlayer 200, while the transverse cushioning support vectors 30a2-30c2, 30d extend transversely to the longitudinal axis L of the sole interlayer 200. For example, the lateral cushioning support vectors 30a2-30c2, 30d can define an angle within 15 degrees (15°) relative to the direction perpendicular to the longitudinal axis L of the sole interlayer 200. The seventh segment 218g defines a pair of composite cushioning support vectors 30g1, 30g2, whereby the curved segment 218g provides responsive support along the longitudinal and lateral directions of the sole interlayer 200.
[0072] During forward movement (e.g., walking or running), the load applied to the midsole 200 is associated with the direction of the longitudinal cushioning support vectors 30a1-30c1, 30a3-30c3, 30e, 30f, to cause the corresponding reservoirs 220a-220c, 224a-224c and segments 218e, 218f to be under shear force, thereby causing the corresponding reservoirs 220a-220c, 224a-224c and segments 218e, 218f to maintain their shape (e.g., not compress) and provide support and stability as the outsole rolls to engage with the ground through the heel area 16 and midfoot area 14. The web region 210 extending between the reservoirs 220a-220c, 224a-224c and the segments 218e, 218f reduces the torque acting on the reservoirs 220a-220c, 224a-224c and the segments 218e, 218f when a load is applied, thereby damping foot oscillations and providing a gradient response type of buffer.
[0073] During lateral movements, such as displacement or cutting movements, the load applied to the midsole 200 is associated with a direction that is lateral and generally perpendicular to the longitudinal cushioning support vectors 30a1-30c1, 30a3-30c3, 30e, and 30f. Therefore, when the applied load is directed toward the inner side 20 of the midsole 200, the reservoirs 224a-224c and segment 218af defining vectors 30a3-30c3 and 30f will compress to provide cushioning to the inner side of the foot, while when the applied load is directed toward the outer side 18 of the midsole 200, the reservoirs 220a-220c and segment 218e defining vectors 30a1-30c1 and 30e will compress to provide cushioning to the outer side of the foot.
[0074] In some embodiments, a series of lateral cushioning support vectors 30a2-30c2, 30d are disposed within the midfoot region 14 and the forefoot region 12, and extend substantially parallel to each other in a direction transverse to the longitudinal axis L of the midsole 200. During forward movement, such as walking or running, the load applied to the midsole 200 is associated with a direction transverse to the lateral cushioning support vectors 30a2-30c2, 30d. Therefore, the corresponding reservoirs 222a-222c and segments 218d defining the respective vectors 30a2-30c2, 30d successively compress and collapse to provide cushioning for the metatarsal region of the foot by pushing away from the ground. The orientation of the vectors 30a2-30c2, 30d relative to the direction of the applied load, and the lengths of the corresponding reservoirs 222a-222c and segments 218d, determine how the segments will compress to reduce ground reaction forces.
[0075] During lateral movements such as offset or cutting motions, the load applied to the midsole 200 is associated with a direction that is generally parallel to or only slightly transverse to the lateral cushioning support vectors 30a2-30c2, 30d, to cause the corresponding reservoirs 222a-222c and segments 218d to be under shear force, thereby allowing the corresponding reservoirs 222a-222c and segments 218d to maintain their shape (e.g., not compressed or slightly compressed) and to provide support and stability to the metatarsal region of the foot in response to lateral movements performed by the footwear 10.
[0076] As described above, the seventh segment 218g further defines a pair of composite buffer support vectors 30g1 and 30g2, each of which is configured to provide a certain degree of longitudinal buffering and responsiveness as well as lateral buffering and responsiveness, thereby complementing the lateral buffer support vectors 30a2-30c2 and 30d and the longitudinal buffer support vectors 30a1-30c1, 30a3-30c3, 30e and 30f.
[0077] The segments 218a-218g associated with cavities 212, 214, and 216 can cooperate to enhance the functionality and cushioning properties provided by the conventional midsole, while providing enhanced stability and support for the foot by damping foot oscillations in response to ground reaction forces during use of the footwear 10. For example, during forward movement (such as walking or running), the load applied to the midsole 200 may cause segments 218a-218g to compress, thereby providing cushioning for the foot by reducing ground reaction forces, while other segments 218a–218g can maintain their shape to impart stability and support properties, thereby damping foot oscillations relative to the footwear 10 in response to the initial impact of ground reaction forces.
[0078] Furthermore, one or more of segments 218a-218g can interact with the ventral region 210 within different regions 12, 14, 16 of the midsole 200 to provide a responsive cushioning isolation zone. For example, segments 218e-218g within the heel region 16 can define corresponding portions of the ventral region 210 to provide responsive cushioning within the heel region 16 by absorbing the initial impact of ground reaction forces through a trampoline effect generated when segments 218e-218g are continuously compressed around the periphery of the heel region 16, thereby providing gradient responsive cushioning within the heel region 16.
[0079] Additionally, during forward movement as the outsole 300 rolls to engage with the ground from the heel area 16 to the forefoot area, and during lateral movement as the outsole 300 rolls to engage with the ground from one of the outer 18 and inner 20 to the other of the outer 18 and inner 20, the geometry and positioning along the segments 218a-218g of the midsole 200 can enhance traction between the outsole 300 and the ground.
[0080] The following terms provide an exemplary construction of the aforementioned footwear items.
[0081] Clause 1: A sole structure for footwear articles having an upper, the sole structure including a heel region, a forefoot region including a toe portion, a midfoot region disposed between the heel region and the forefoot region, and a pocket, the pocket including a first blocking layer and a second blocking layer, the first blocking layer cooperating with the second blocking layer to define a first cavity and a second cavity, the first cavity defining the periphery of the heel region, and the second cavity extending from the midfoot region through the forefoot region and including a plurality of segments extending from the inside of the sole structure to the outside of the sole mechanism.
[0082] Clause 2: The sole structure according to Clause 1, wherein each of the segments of the second cavity includes an inner reservoir adjacent to the inner side and an outer reservoir adjacent to the outer side, the inner reservoir being fluidly connected to the outer reservoir via a first conduit.
[0083] Clause 3: The sole structure according to Clause 2, wherein each of the segments further includes a central reservoir disposed between the inner reservoir and the outer reservoir.
[0084] Clause 4: The sole structure described in Clause 3 also includes an outsole attached to the bladder and comprising a plurality of contact pads, wherein each of the contact pads is formed on one of the reservoirs.
[0085] Clause 5: The sole structure according to Clause 3, wherein the inner reservoir is fluidly connected to the central reservoir via a first conduit, and the outer reservoir is connected to the central reservoir via a second conduit.
[0086] Clause 6: The sole structure according to Clause 3, wherein the inner reservoir defines an elongated hemispherical shape having a main axis extending in the direction of the inner side, the outer reservoir defines an elongated hemispherical shape having a main axis extending in the direction of the outer side, and the central reservoir defines an elongated hemispherical shape whose main axis intersects the main axis of the inner reservoir and the main axis of the outer reservoir.
[0087] Clause 7: The sole structure according to Clause 6, wherein the plurality of segments include a first segment, a second segment and a third segment, wherein the second segment is disposed longitudinally between the first segment and the third segment.
[0088] Clause 8: The sole structure according to Clause 7, wherein the central reservoir of the third section is disposed between the inner reservoir and the outer reservoir of the second section.
[0089] Clause 9: The sole structure according to Clause 8, wherein the central reservoir of the second segment is disposed between the inner reservoir and the outer reservoir of the first segment.
[0090] Clause 10: The sole structure according to Clause 7, wherein the inner reservoir of the first segment is fluidly connected to the inner reservoir of the second segment via a third conduit, and the outer reservoir of the first segment is fluidly connected to the outer reservoir of the second segment via a fourth conduit.
[0091] Clause 11: A sole structure for footwear articles having an upper, the sole structure including a heel region, a forefoot region including a toe portion, a midfoot region disposed between the heel region and the forefoot region, and a first cavity extending from the midfoot region to the forefoot region, and including a plurality of ribs extending from the inside of the sole structure to the outside of the sole structure, each of the ribs including an inner reservoir formed along the inside of the sole structure, an outer reservoir formed along the outside of the sole structure, and a central reservoir disposed between the inner reservoir and the outer reservoir.
[0092] Clause 12: The sole structure according to Clause 11, wherein the inner reservoir of each rib defines a main axis extending along the inner side of the sole structure, the outer reservoir of each rib defines a main axis extending along the outer side of the sole structure, and the central reservoir of each rib defines a main axis extending transversely to the longitudinal axis of the sole structure.
[0093] Clause 13: The sole structure according to Clause 12, wherein each rib includes an outer conduit for fluidly connecting the central reservoir to the outer reservoir and an inner conduit for fluidly connecting the central reservoir to the inner reservoir.
[0094] Clause 14: The sole structure according to Clause 11, wherein the first cavity includes a first rib, a second rib and a third rib, and the second rib is disposed between the first rib and the second rib along the longitudinal axis of the sole structure.
[0095] Clause 15: The sole structure according to Clause 14, wherein the outer reservoir of the first rib is fluidly connected to the outer reservoir of the second rib via a first conduit, and the outer reservoir of the second rib is fluidly connected to the outer reservoir of the third rib via a second conduit.
[0096] Clause 16: The sole structure according to Clause 15, wherein the inner reservoir of the first rib is fluidly connected to the inner reservoir of the second rib via a third conduit, and the inner reservoir of the second rib is fluidly connected to the inner reservoir of the third rib via a fourth conduit.
[0097] Clause 17: The sole structure according to Clause 11, wherein the central reservoir of the first rib is disposed between the inner reservoir and the outer reservoir of the second rib.
[0098] Clause 18: The sole structure according to Clause 11, wherein the main axis defined by the central reservoir of one of the ribs is positioned in front of the auxiliary axis defined by the inner reservoir and the outer reservoir of one of the ribs.
[0099] Clause 19: The sole structure according to Clause 11, wherein the first cavity further includes a first segment extending from the inside to the outside around the forefoot region and connected via a first conduit to an inner reservoir of a first rib in the rib and via a second conduit to an outer reservoir of the first rib in the rib.
[0100] Clause 20: The sole structure according to Clause 19 further includes: a second cavity surrounding the heel region; and a third cavity disposed between the first and second cavities in the midfoot region of the sole structure.
[0101] The foregoing description has been provided for illustrative purposes. It is not intended to be exhaustive or limiting of this disclosure. Elements or features of a particular construction are generally not limited to that particular construction, but are interchangeable where applicable, and may be used in the chosen construction even if not specifically shown or described. It can also be varied in many ways. Such variations should not be considered a departure from this disclosure, and all such modifications are intended to be included within the scope of this disclosure.
Claims
1. A sole structure (200) for footwear articles having an upper (10), the sole structure (200) comprising: Heel area (16); Forefoot area (12); The midfoot area (14) is located between the heel area (16) and the forefoot area (12); and The first cavity includes: (i) a first segment (218) having an inner reservoir (224) including a main axis (30) extending along the inner side (20) of the sole structure (200); (ii) a second segment (218) having an outer reservoir (220) including a main axis (30) extending along the outer side (18) of the sole structure (200); and (iii) a central reservoir (222a) defining an elongated hemisphere having a main axis (30) extending transversely to each of the inner side (20) and the outer side (18).
2. The sole structure (200) according to claim 1, wherein, The first cavity is located in the front foot region (12).
3. The sole structure (200) according to claim 1, wherein, The first storage device (224) defines a flattened hemispherical shape.
4. The sole structure (200) according to claim 1 or 3, wherein, The second reservoir (220) defines a flattened hemispherical shape.
5. The sole structure (200) according to claim 1 further includes a second cavity disposed in the midfoot region (14).
6. The sole structure (200) according to claim 5, wherein, The second cavity defines an elongated hemisphere.
7. The sole structure (200) according to claim 6, wherein, The elongated hemisphere of the second cavity includes a main axis (30h) that extends substantially along the longitudinal axis (L) of the sole structure (200).
8. The sole structure (200) according to claim 6 or 7, wherein, A portion of the elongated hemisphere of the second cavity is disposed between the first segment (218) and the second segment (218).
9. The sole structure (200) according to claim 6 or 7, wherein, The elongated hemisphere of the second cavity is in fluid communication with the first section (218) and the second section (218).
10. The sole structure (200) according to claim 9 further includes a first conduit (234) that fluidly connects the elongated hemisphere of the second cavity to one of the first segment (218) and the second segment (218).
11. The sole structure (200) according to claim 10 further includes a second conduit (234) that fluidly connects the elongated hemisphere of the second cavity to the other of the first segment (218) and the second segment (218).
12. The sole structure (200) according to claim 5 further includes a third cavity disposed in the heel region (16) and extending around the rear end of the sole structure.
13. The sole structure (200) according to claim 1 further includes an outsole (300) attached to the first cavity.
14. The sole structure (200) according to claim 1, wherein, The first chamber is pressurized.
15. A footwear article comprising the sole structure (200) according to claim 1.
16. A sole structure (200) for a footwear article having an upper (10), said sole structure (200) comprising: Heel area (16); The forefoot area, including the toes (12); The midfoot area (14) is located between the heel area (16) and the forefoot area (12); The first cavity includes: (i) a first segment (218) having an inner reservoir (224) defining an elongated hemispherical shape extending along the inner side (20) of the sole structure (200); (ii) a second segment (218) having an outer reservoir defining an elongated hemispherical shape extending along the outer side (18) of the sole structure (200); and (iii) a central reservoir (222a) defining an elongated hemispherical shape disposed between the first segment (218) and the second segment (222), and positioned closer to the toe portion than the first segment (218) and the second segment (222).
17. The sole structure (200) according to claim 16, wherein, The central reservoir (222a) has a main axis (30) extending transversely to each of the inner side (20) and the outer side (18) of the sole structure (200).
18. The sole structure (200) according to claim 17, wherein, The first segment (218) includes a main axis (30) extending along the inner side (20) of the sole structure (200).
19. The sole structure (200) according to claim 17 or 18, wherein, The second segment (218) includes a main axis (30) extending along the outer side (18) of the sole structure (200).
20. The sole structure (200) according to claim 16 further includes a second cavity, the second cavity comprising a first segment (218) extending along the inner side (20) of the sole structure and a second segment (218) extending along the outer side (18) of the sole structure (200).
21. The sole structure (200) according to claim 20, wherein, The first segment (218) of the second cavity includes a flattened hemispherical shape extending along the inner side (20) of the sole structure (200), and the second segment (218) of the second cavity includes a flattened hemispherical shape extending along the outer side (18) of the sole structure (200).
22. The sole structure (200) according to claim 20 or 21, wherein, The second cavity includes a third segment (218) that extends between and fluidly connects the first segment (218) and the second segment (218) of the second cavity.
23. The sole structure (200) according to claim 20, wherein, The first cavity is located in the heel region (16).
24. The sole structure (200) according to claim 16, wherein, The first chamber is pressurized.
25. A footwear article comprising the sole structure (200) according to claim 16.
26. A sole structure (200) for a footwear article having an upper (10), said sole structure (200) comprising: Heel area (16); Forefoot area (12); The midfoot area (14) is located between the heel area (16) and the forefoot area (12); The first cavity includes: (i) a first segment (218) having an inner reservoir (224) defining an elongated hemispherical shape extending along the inner side (20) of the sole structure (200); and (ii) a second segment (218) having an outer reservoir (220) defining an elongated hemispherical shape extending along the outer side (18) of the sole structure (200). The second cavity includes: (i) a third segment (218) having an inner reservoir (224) defining an elongated hemispherical shape extending along the inner side (20) of the sole structure (200); and (ii) a fourth segment (218) having an outer reservoir (220) defining an elongated hemispherical shape extending along the outer side (18) of the sole structure (200); and The central storage unit (222a) defines a flattened hemisphere disposed between the first cavity and the second cavity.
27. The sole structure (200) according to claim 26, wherein, The central storage unit (222a) has a main axis (30) extending along the longitudinal axis of the sole structure (200).
28. The sole structure (200) according to claim 27, wherein, The first segment (218) of the first cavity includes a main axis (30) extending along the inner side (20) of the sole structure (200).
29. The sole structure (200) according to claim 27 or 28, wherein, The second segment (218) of the first cavity includes a main axis (30) extending along the outer side (18) of the sole structure (200).
30. The sole structure (200) according to claims 27-29, wherein, The third segment (218) of the second cavity includes a main axis (30) extending along the inner side (20) of the sole structure (200).
31. The sole structure (200) according to claims 27-30, wherein, The fourth segment (218) of the second cavity includes a main axis (30) extending along the outer side (18) of the sole structure (200).
32. The sole structure (200) according to claim 26, wherein, The second cavity includes a fifth segment (218) that extends between the third segment (218) and the fourth segment (218) of the second cavity and fluidly connects the third segment (218) and the fourth segment (218) of the second cavity.
33. The sole structure (200) according to claim 26, wherein, The first cavity is located in the front foot region (12).
34. The sole structure (200) according to claim 33, wherein, The first cavity is located in the heel region (16).
35. The sole structure (200) according to claim 33 or 34, wherein, The central storage unit (222a) is located in the central foot area (14).
36. The sole structure (200) according to claim 26, wherein, The first chamber is pressurized.
37. A footwear article comprising the sole structure (200) according to claim 26.