CLEAT STRUCTURE FOR ARTICLE OF FOOTWEAR

Abstract

A sole structure for an article of footwear includes a baseplate defining a ground-contacting surface of the sole structure and at least two ground-engaging members extending from the ground-contacting surface. The at least two ground-engaging members including a first portion and a second portion, the first portions of the ground-engaging members being connected to one another by a bridge formed separately from the baseplate.

Description

FIELD

The present disclosure relates generally to an article of footwear and more particularly to a cleat structure for an article of footwear

BACKGROUND

This section provides background information related to the present disclosure and is not necessarily prior art.

Articles of footwear conventionally include an upper and a sole structure. The upper may be formed from any suitable material(s) to receive, secure, and support a foot on the sole structure. The upper may cooperate with laces, straps, or other fasteners to adjust the fit of the upper around the foot. A bottom portion of the upper, proximate to a bottom surface of the foot, attaches to the sole structure.

Sole structures generally include a layered arrangement extending between a ground surface and the upper and include an outsole. The outsole may include a baseplate formed of a rigid or semi-rigid material that provides rigidity and energy distribution across the sole structure. The baseplate may be provided with one or more ground-engaging members for engagement with a ground surface.

While conventional baseplates of sole structures adequately provide a wearer with traction, separately formed ground-engaging members or ground-engaging members that have multiple components and/or materials can cause excess material waste during manufacturing. This material waste is often referred to as runner waste, which is a byproduct of forming a conventional ground-engaging member, or a portion thereof, via an injection-molding process. Such processes typically require runners to supply molten plastic to various regions of a mold to simultaneously form multiple ground-engaging members or portions thereof. Accordingly, conventional sole structures may be designed and function well for a particular activity but may be lacking in manufacturing efficiency and sustainability.

BRIEF DESCRIPTION OF DRAWINGS

The drawings described herein are for illustrative purposes only of selected configurations and not all possible implementations, and are not intended to limit the scope of the present disclosure.

FIG. 1 is a side elevation view of an article of footwear according to the present disclosure;

FIG. 2 is a bottom perspective view of the article of footwear of FIG. 1;

FIG. 3 is a cross-sectional view of the article of footwear of FIG. 1, taken along Line 3-3 in FIG. 1;

FIG. 4 is bottom-front perspective view of a sole structure according to the present disclosure;

FIG. 5A is a bottom plan view of the sole structure of FIG. 4;

FIG. 5B is a top plan view of the sole structure of FIG. 4

FIG. 6A is bottom exploded perspective view of the sole structure of FIG. 4

FIG. 6B is a top exploded perspective view of the sole structure of FIG. 4;

FIG. 7 is a cross-sectional view of the sole structure of FIG. 4, taken along Line 7-7 in FIG. 5A;

FIG. 8 is a cross-sectional view of the sole structure of FIG. 4, taken along Line 8-8 in FIG. 5A;

FIG. 9 is a bottom perspective view of a bridge of the sole structure in accordance with the principles of the present disclosure;

FIG. 10 is a bottom perspective view of a baseplate of the sole structure of the present disclosure; and

FIGS. 11A-11F show example configurations of traction elements for a sole structure according to the present disclosure.

Corresponding reference numerals indicate corresponding parts throughout the drawings.

DETAILED DESCRIPTION

Example configurations will now be described more fully with reference to the accompanying drawings. Example configurations are provided so that this disclosure will be thorough, and will fully convey the scope of the disclosure to those of ordinary skill in the art. Specific details are set forth such as examples of specific components, devices, and methods, to provide a thorough understanding of configurations of the present disclosure. It will be apparent to those of ordinary skill in the art that specific details need not be employed, that example configurations may be embodied in many different forms, and that the specific details and the example configurations should not be construed to limit the scope of the disclosure.

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

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

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

In one configuration, a sole structure for an article of footwear includes a baseplate defining a ground-contacting surface of the sole structure and at least two ground-engaging members extending from the ground-contacting surface and including a first portion and a second portion, the first portions of the ground-engaging members being connected to one another by a bridge formed separately from the baseplate.

The sole structure may include one or more of the following optional features. For example, the first portions of the at least two ground-engaging members may be integrally formed with the bridge, the first portions of the at least two ground-engaging members may be formed from a different material than a material forming the baseplate, the second portions of the at least two ground-engaging members may be formed from the same material as a material forming the baseplate, the second portions of the at least two ground-engaging members may be integrally formed with the baseplate, and/or the first portions of the at least two ground-engaging members may include a first leg extending substantially perpendicular to the ground-contacting surface and a second leg extending from the first leg.

In one configuration, the second leg may extend substantially perpendicular to the first leg. Further, the second leg may extend substantially parallel to the ground-contacting surface. Additionally or alternatively, the second leg may define a distal end of the at least two ground-engaging members.

An article of footwear may incorporate the sole structure described above.

In another configuration, a sole structure for an article of footwear includes a baseplate defining a ground-contacting surface of the sole structure and at least two ground-engaging members extending from the ground-contacting surface and including a first portion and a second portion, the first portions of the at least two ground-engaging members being connected to one another by a bridge with the ground-contacting surface extending (i) between and separating the first portions of the at least two ground-engaging members and (ii) substantially parallel to the bridge.

The sole structure may include one or more of the following optional features. For example, the first portions of the at least two ground-engaging members may be integrally formed with the bridge, the first portions of the at least two ground-engaging members may be formed from a different material than a material forming the baseplate, the second portions of the at least two ground-engaging members may be formed from the same material as a material forming the baseplate, the second portions of the at least two ground-engaging members may be integrally formed with the baseplate, and/or the first portions of the at least two ground-engaging members may include a first leg extending substantially perpendicular to the ground-contacting surface and a second leg extending from the first leg.

In one configuration, the second leg may extend substantially perpendicular to the first leg. Further, the second leg may extend substantially parallel to the ground-contacting surface. Additionally or alternatively, the second leg may define a distal end of the at least two ground-engaging members.

An article of footwear may incorporate the sole structure described above.

Referring to FIGS. 1-3, an article of footwear 10 includes a sole structure 100 and an upper 200 attached to the sole structure 100. The article of footwear 10 may further include an anterior end 12 associated with a forward-most point of the footwear 10 and a posterior end 14 corresponding to a rearward-most point of the footwear 10. A longitudinal axis A₁₀ of the footwear 10 extends along a length of the footwear 10 from the anterior end 12 to the posterior end 14 parallel to a ground surface, and generally divides the footwear 10 into a medial side 16 and a lateral side 18. Accordingly, the medial side 16 and the lateral side 18 respectively correspond with opposite sides of the footwear 10 and extend from the anterior end 12 to the posterior end 14. As used herein, a longitudinal direction refers to the direction extending from the anterior end 12 to the posterior end 14, while a lateral direction refers to the direction transverse to the longitudinal direction and extending from the medial side 16 to the lateral side 18.

The article of footwear 10 may be divided into one or more regions. The regions may include a forefoot region 20, a mid-foot region 22, and a heel region 24. The forefoot region 20 may correspond with the phalanges and the metatarsal bones of a foot. The mid-foot region 22 may correspond with an arch area of the foot, and the heel region 24 may correspond with rear portions of the foot, including a calcaneus bone.

The article of footwear 10 and, more particularly, the sole structure 100, may be further described as including a peripheral region 26 and an interior region 28, as indicated in FIG. 1. The peripheral region 26 is generally described as being a region between the interior region 28 and an outer perimeter of the sole structure 100. Particularly, the peripheral region 26 extends from the forefoot region 20 to the heel region 24 along each of the medial side 16 and the lateral side 18, and wraps around each of the forefoot region 20 and the heel region 24. The interior region 28 is circumscribed by the peripheral region 26, and extends from the forefoot region 20 to the heel region 24 along a central portion of the sole structure 100. Accordingly, each of the forefoot region 20, the mid-foot region 22, and the heel region 24 may be described as including the peripheral region 26 and the interior region 28.

The upper 200 includes interior surfaces that define an interior void 202 configured to receive and secure a foot for support on the sole structure 100. The upper 200 may be formed from one or more materials that are stitched or adhesively bonded together to form the interior void 202. Suitable materials of the upper may include, but are not limited to, mesh, textiles, foam, leather, and synthetic leather. The materials may be selected and located to impart properties of durability, air-permeability, wear-resistance, flexibility, and comfort.

In some examples, one or more fasteners 204 extend along the upper 200 to adjust a fit of the interior void 202 around the foot and to accommodate entry and removal of the foot therefrom. The upper 200 may include apertures 206 such as eyelets and/or other engagement features such as fabric or mesh loops that receive the fasteners 204. The fasteners 204 may include laces, straps, cords, hook-and-loop, or any other suitable type of fastener. The upper 200 may include a tongue portion 208 that extends between the interior void 202 and the fasteners 204.

With reference to FIG. 3, in some examples, the article of footwear 10 includes a plate structure 210 disposed in the upper 200. The plate structure 210 is configured to attenuate forces associated with impact of the sole structure 100 with a ground surface. As shown, the plate structure 210 includes a top surface 212 defining a footbed of the interior void 202 and a bottom surface 214 formed on an opposite side of the plate structure 210 than the top surface 212. The footbed may be contoured to conform to a profile of the bottom surface (e.g., plantar) of the foot. The upper 200 may also incorporate additional layers such as an insole 216 or sockliner that may be disposed on the plate structure 210 and reside within the interior void 202 of the upper 200 to receive a plantar surface of the foot and enhance the comfort of the article of footwear 10. An ankle opening 217 in the heel region 16 may provide access to the interior void 202. For example, the ankle opening 217 may receive a foot to permit entry of the foot into the interior void 202 and to facilitate removal of the foot from the interior void 202.

In some examples, the upper 200 includes a strobel 220 having a bottom surface 222 opposing the sole structure 100 and a top surface 224 opposing the bottom surface 214 of the plate structure 210. In some examples, the strobel 220 is attached to the upper 200 using stitching or adhesives. In the illustrated example, the upper 200 is formed as a unitary boot or sock, wherein the strobel 220 and the upper 200 are unitarily formed of a knitted material. Accordingly, the bottom surface 222 corresponds to both the strobel 220 and the upper 200. Optionally, the upper 200 may also incorporate additional layers such as one or more support plates (none shown).

With continued reference to FIGS. 1 and 2, the sole structure 100 is attached to the bottom surface 222 of the upper 200 and includes a forefoot plate 102 disposed in the forefoot region 20 and a separate heel plate 104 disposed in the heel region 24. Accordingly, the mid-foot region 22 of the upper 200 may be exposed between the forefoot plate 102 and the heel plate 104 (FIGS. 2 and 3). As described in greater detail below, the forefoot plate 102 and the heel plate 104 each include a plurality of ground-engaging members, which are configured to engage a soft or resilient ground surface. Each of the forefoot plate 102 and the heel plate 104 is formed of one or more rigid or semi-rigid materials. In some examples, the forefoot plate 102 and the heel plate 104 are formed of one or more polymeric materials. In other examples, one or both of the forefoot plate 102 and the heel plate 104 may include a composite material, such as a fiber-reinforced, composite material.

The forefoot plate 102 includes a top surface 106 (FIG. 5B) attached to the bottom surface 222 of the upper 200, a bottom surface 108 formed on an opposite side of the forefoot plate 102 from the top surface 106, and a peripheral side surface 110 extending between the top surface 106 and the bottom surface 108 and defining an outer peripheral profile of the forefoot plate 102. Likewise, the heel plate 204 includes a top surface 112 attached to the bottom surface 222 of the upper 200, a bottom surface 114 formed on an opposite side of the forefoot plate 102 from the top surface 112, and a peripheral side surface 116 extending between the top surface 112 and the bottom surface 114 and defining an outer peripheral profile of the heel plate 104. As discussed above, the forefoot plate 102 and the heel plate 104 are spaced apart from each other in the mid-foot region 22 such that the bottom surface 222 of the upper 200 is exposed through the mid-foot region 22. Accordingly, the bottom surface 108 of the forefoot plate 102, the bottom surface 222 of the upper 200, and the bottom surface 114 of the heel plate 104 cooperate to define a ground-engaging surface 30 of the article of footwear 10.

As best shown in FIG. 2, the peripheral side surface 110 of the forefoot plate 102 includes a lateral portion 110a extending along the lateral side 18 of the upper 200 from the mid-foot region 22 to the anterior end 12, a medial portion 110b extending along the medial side 16 of the upper 200 from the mid-foot region 22 to the anterior end 12, and a midfoot portion 110c connecting the lateral portion 110a and the medial portion 110b across the midfoot region 22.

In some examples, the lateral portion 110a of the peripheral side surface 110 may define a notch 118 on the lateral side 18 of the forefoot plate 102. The notch 118 may extend inwardly from the lateral side 18 at an oblique angle with respect to the longitudinal axis A₁₀ of the footwear 10. As shown, the notch 118 extends inwardly and towards the longitudinal axis A₁₀ of the footwear 10. Optionally, a width of the notch 218 may be tapered along a direction towards the longitudinal axis A₁₀.

The medial side surface 110b of the peripheral side surface 110 may define a notch 120 on the medial side 16 of the forefoot plate 102. In some instances, the notch 120 extends inwardly from the medial side 16 at an oblique angle with respect to the longitudinal axis A₁₀ of the footwear 10. Like the notch 118 on the lateral side 18, the notch 120 extends inwardly and towards the longitudinal axis A₁₀ of the footwear 10. Optionally, a width of the notch 120 may be tapered along a direction towards the longitudinal axis A₁₀. As shown in FIG. 5A, the notches 118, 120 may oppose one another across a width of the forefoot plate 102 in a direction extending between the medial side 16 and the lateral side 18.

The mid-foot portion 110c of the peripheral side surface 110 may form a notch 122 at a posterior end of the forefoot plate 102, between the lateral portion 110a and the medial portion 110b. As shown, the notch 122 extends inwardly from the posterior end in a direction of the longitudinal axis A₁₀ of the footwear 10 (i.e., substantially parallel to the longitudinal axis A₁₀). Optionally, a width of the notch 120 may be tapered along a direction towards the longitudinal axis A₁₀. As shown, the notch 118 and the notch 122 cooperate to define a first lobe 124 of the forefoot plate 102 disposed on the lateral side 18, while the notch 120 and the notch 122 cooperate to define a second lobe 126 of the forefoot plate 102 disposed on the medial side 16. While the notches 118, 120, 122 are shown as having a tapered “V” shape, in other examples, the notches 118, 120, 122 may be arcuate, polygonal, or a combination of arcuate and polygonal.

The bottom surface 108 of the forefoot plate 102 includes a plurality of first traction elements 128 including a pair of rear first traction elements 128a, 128b and one or more forward first traction elements 128c-128g. As shown, the rear first traction elements 128a, 128b are disposed on each of the lobes 124, 126. Specifically, the rear first traction element 128a is disposed on the first lobe 124, while the rear first traction element 128b is disposed on the second lobe 126. The rear first traction elements 128a, 128b may be offset from one another along the longitudinal axis A₁₀ such that the rear second traction element 128b is located further from the anterior end 12 than the rear first traction element 128a, as shown in FIG. 2. The one or more forward first traction elements 128c-128g are arranged in an approximately circular grouping with a center point C₁₂₈ substantially aligned with the longitudinal axis A₁₀.

The heel plate 104 of the sole structure 100 is located in the heel region 24 adjacent to the posterior end 14. As with the forefoot plate 102, the heel plate 104 includes a plurality of first traction elements 128h, 128i. Specifically, the heel plate 104 includes a pair of forward first traction elements 128h, 128i. Additionally, the heel plate 104 includes a pair of second traction elements 130a, 130b located proximate to the posterior end 14 of the article of footwear 10.

In some examples, the forefoot plate 102 may further include at least one serrated region 125 formed in the interior region 26 of the bottom surface 108, and the heel plate 104 may include a serrated region 127 formed in the interior region 26 of the bottom surface 114. The serrated regions 125, 127 provide secondary traction for the ground-engaging surface 30 and work in conjunction with the traction elements 128, 130 to engage a ground surface during use.

As shown in FIGS. 4 and 5A, each of the first traction elements 128 extend from the bottom surfaces 108, 114 to a distal end 132a-132i facing away from the bottom surfaces 108, 114 and forming an elongated substantially rectangular body. Each distal end 132 of the first traction elements 128a-128i forms a ground-contacting surface of each respective first traction element 128a-128i. Each of the first traction elements 128a-128i further includes an outer surface 134a-134i, an inner surface 136a-136i formed on an opposite side of the traction element 128 than the outer surface 134a-134i, a first side surface 138a-138i, and a second side surface 140a-140i formed on an opposite side of the traction element 128 than the first side surface 138a-138i. As shown, the first side surfaces 138a-138i are generally concave, while the second side surfaces 140a-140i taper along a length of the traction element 128 as it extends from the distal ends 132a-132i to the respective bottom surfaces 108, 114. The second side surfaces 140a-140i may further include a trailing step. Specifically, the second side surfaces 140a, 140c-140g of each of the first traction elements 128a, 128c-128g further include a step ledge 141a, 141c-141g.

The step ledges 141a, 141c-141g may further increase the traction of each of the first traction elements 128. Specifically, the shape and orientation of the first traction elements 128 disposed on the forefoot plate 102 facilitate rotational movements while increasing linear traction. In so doing, the article of footwear 10 is able to provide traction for forward movements while concurrently allowing the article of footwear 10 to easily pivot and rotate. In the case of the step ledges 141a, 141c-141g, the ledges 141a, 141c-141g are aligned with the side surfaces 140a, 140c-140g, respectively, and essentially serve to further lengthen each surface 140a, 140c-140g. In so doing, the ledges 141a, 141c-141g increase the overall length of each surface 140a, 140c-140g and, thus, its ability to aid in propelling the article of footwear 10 during forward movements by allowing the traction elements 128 to engage more of a ground surface. At the same time, the ledges 141a, 141c-141g are aligned with the surfaces 140a, 140c-140g and therefore facilitate rotation of the footwear 10 in much the same ways as the orientation and shape of the surfaces 140a, 140c-140g.

As described above, the first traction elements 128a-128g disposed on the forefoot plate 102 are generally centered with respect to the center point C₁₂₈ of the forefoot plate 102. Accordingly, the outer surfaces 134a-134i generally face away from the center point C₁₂₈ of the forefoot plate 102, while the inner surfaces 136a-136i face in toward the center point C₁₂₈ of the forefoot plate 102. Additionally, the first side surfaces 138a-138i generally form a leading edge of the traction elements 128a-128i, while the second side surfaces 140a-140i including corresponding step ledges 141a, 141c-141g form a trailing edge of the traction elements 128a-128i. The first traction elements 128h, 128i disposed on the heel plate 104 extend between the medial side 16 and the lateral side 18 and are generally aligned with one another along an axis A₁₂₈ transverse the longitudinal axis A₁₀ of the sole structure 100 such that the first surfaces 138h, 138i face one another, while the second surfaces 140h, 140i face away from one another.

Still referring to FIGS. 4 and 5A, the second traction elements 130a, 130b extend from the bottom surface 114 of the heel plate 104 to a distal end 142a, 142b facing away from the bottom surface 114 and form an elongated substantially rectangular body. The second traction elements 130a, 130b further include an anterior face 144a, 144b and a posterior face 146a, 146b disposed on an opposite side of the second traction element 130a, 130b than the anterior face 144a, 144b. The second traction elements 130a, 130b further include a first edge 148a, 148b, and a second edge 150a, 150b formed on an opposite side of the second traction elements 130a, 130b than the first edge 148a, 148b. As shown, the anterior face 144 faces toward the anterior end 12 of the article of footwear, while the posterior face 146 faces toward the posterior end 14 of the article of footwear 10. Like the first traction elements 128h, 128i, the second traction elements 130a, 130b extend between the medial side 16 and the lateral side 18 and are generally aligned with one another along an axis A₁₃₀ parallel with the axis A₁₂₈ and transverse the longitudinal axis A₁₀ of the sole structure 100 such that the first edges 148a, 148b face one another, while the second edges 150a, 150b face away from one another.

Referring now to FIGS. 6A and 6B, an exploded view of the plate structure 100 is provided. Unlike conventional plate structures, which include monolithic materials, the plate structure 100 of the present disclosure is configured as a composite structure including a plurality of components joined together. For example, the plate structure 100 includes baseplates 154, 160 and corresponding bridges 156, 162. As discussed further below, by integrating bridges 156, 162 into the plate structure 100, the plate structure 100 may significantly minimize manufacturing waste while increasing the stability of the traction elements 128, 130 of the sole structure 100.

With reference to FIGS. 6A-8, components of the forefoot plate 102 of the sole structure 100 further include a forefoot baseplate 154 and a forefoot bridge 156. While not shown, in some examples, the forefoot plate 102 further includes an outsole plate. Additionally, the heel plate 104 of the sole structure 100 includes a heel baseplate 160 and a heel bridge 162. Suitable materials for the forefoot bridge 156 and the heel bridge 162 include, but are not limited to, thermoplastic polyurethanes (TPUs), polyolefins, polyolefin based elastomers, and nylons, as these materials provide superior abrasion properties. Suitable materials for the forefoot baseplate 154 and the heel baseplate 160 include, but are not limited to, TPUs, nylons, copolyamides, and polyolefins. In some examples, the forefoot bridge 156 and the heel bridge 162 are formed from a different material than the forefoot baseplate 154 and the heel baseplate 160. In other examples, all of the components of the forefoot plate 102 and the heel plate 104 are formed from the same material.

As shown in FIGS. 6A, 6B, and 9, the forefoot bridge 156 and the heel bridge 162 may further be defined by plates 164, 165, central first traction elements 170, and central second traction elements 171. The plate 164 of the forefoot bridge 156 includes a top surface 166 and a bottom surface 167 formed an opposite side of the plate 164 than the top surface 166, and connects the central first traction elements 170 to one another. Likewise, the plate 165 of the heel bridge 162 includes a top surface 168 and a bottom surface 169 formed on an opposite side of the plate 165 than the top surface 168, and connects the central second traction elements 171 to one another. The central first traction elements 170 generally correspond to the first traction elements 128b-128g of the resulting sole structure 100, while the central second traction elements 171 generally correspond to the second traction elements 130a, 130b of the resulting sole structure 100. As shown, the forefoot bridge 156 further includes a raised surface 175 disposed on the bottom surface 167 and extending therefrom.

Referring to FIG. 9, each of the central first traction elements 170 includes a first leg 172 extending substantially perpendicular from the bottom surface 167 of the plate 164 from a first end to a second end away from the bottom surface 167 of the plate 164, a second leg 173 extending substantially perpendicular from a second end of the first leg 172, and a third leg 158 extending from the first leg 172 along the bottom surface 167. In other words, the second leg 173 is substantially parallel with the bottom surface 167 of the plate 164 (i.e., the forefoot bridge 156) and the third leg 158, and defines a distal end 174 of each of the central first traction elements 170.

The third leg 158 generally corresponds to the step ledges 141a, 141c-141g of the sole structure 100, and is further defined by a first vertical face 190 extending from the first end of the first leg 172, a first face 189 disposed on a plane substantially parallel with the lower surface 167, and a second vertical face 191 extending between the lower surface 167 and the first face 189. Likewise, the distal ends 174 of the central first traction elements 170 generally correspond to the distal ends 132a, 132c-132g of the first traction elements 128a, 128c-128g of the sole structure 100. Similarly, each of the central second traction elements 171 includes a first leg 176 extending substantially perpendicular from the bottom surface 169 of the plate 165, and a second leg 177 extending substantially perpendicular from the first leg 176. In other words, the second leg 177 is substantially parallel with the bottom surface 169 of the plate 165 (i.e., the heel bridge 162) and defines a distal end 178 of each of the central second traction elements 171. The distal ends 178 of the central second traction elements 171 generally correspond to the distal ends 142a, 142b of the second traction elements 130a, 130b of the sole structure 100.

As shown in FIGS. 6A, 6B, and 10, the forefoot baseplate 154 is defined by a top surface 179 and a bottom surface 180 formed on an opposite side of the forefoot baseplate 154 than the top surface 179. The forefoot baseplate 154 further includes an aperture 192 formed through a thickness of the forefoot baseplate 154 between the top surface 179 and the bottom surface 180. The aperture 192 may be sized to receive the raised surface 175 of the forefoot bridge 156, where the raised surface 175 is exposed through the aperture 192. In some examples, the raised surface 175 may be substantially flush with the bottom surface 180 of the forefoot baseplate 154 and form a portion of the ground-engaging surface 30 of the article of footwear 10. In other examples, the raised surface 175 may extend through the aperture 192 and beyond the bottom surface 180 to form a portion of the ground-engaging surface 30 of the article of footwear 10.

The top surface 179 includes recesses that form recessed cavities 181 that form outer first traction elements 182 on an opposite side of the baseplate 154 than the top surface 179. In some examples, at least two of the recessed cavities 181 are sized to receive the central first traction elements 170 of the forefoot bridge 156. In these examples, the outer first traction elements 182 include apertures 184 that wrap around and receive the central first traction elements 170 to form the first traction elements 128 of the sole structure 100, where the distal ends 174 of the central first traction elements 170 extend through and beyond the outer first traction elements 182 to define the distal ends 132 of the first traction elements 128. In some examples, at least one of the outer first traction elements 182 forms the entire first traction element 128 including the distal end 132 of the first traction element 128.

The heel baseplate 160 is defined by a top surface 193 and a bottom surface 185 formed on an opposite side of the heel baseplate 160 than the top surface 193. The top surface 193 includes recesses that form recessed cavities 186 that extend out from the bottom surface 185 to form outer second traction elements 187. In some examples, one or more of the recessed cavities 186 is sized to receive a central second traction element 171 of the heel bridge 162. In these examples, the outer second traction elements 187 include apertures 188 that wrap around and receive the central second traction elements 171 to form the second traction elements 130 of the sole structure 100. Once assembled, the distal ends 178 of the central second traction element 171 extend through and beyond the outer second traction element 187 to define the distal end 142 of the second traction element 130. In some examples, at least one of the outer second traction elements 187 forms an entire first traction element 128 including the distal end 132 of the first traction element 128.

To form the final structure of the sole structure 100, as shown in FIGS. 4, 5A, 5B, 7, and 8, the components of the forefoot plate 102, and the heel plate 104 are injection molded in sequence. While a typical injection process uses a runner system to separately mold traction elements, whereby the plastic used in the runner system is lost as waste, the sole structure 100 integrates the runner structure into the sole structure 100 by including the runner system as the plates 164, 165 of the forefoot bridge 156 and the heel bridge 162. For example, the forefoot bridge 156 and the heel bridge 162 may be injection molded, through a combination of pressure and heat, to form the plates 164, 165, the central first traction elements 170, and the central second traction elements 171, thereby minimizing the amount of waste necessary to produce the sole structure 100. Due to the injection molding process, the components of the forefoot bridge 156 and the heel bridge 162 (i.e., the plates 164, 165, the traction elements 170, 171, and the legs 172, 173, 158, 176, 177) are all integrally formed together and separately formed from the baseplates 154, 160.

Next, the forefoot baseplate 154 and the heel baseplate 160 may be injection molded over the forefoot bridge 156 and the heel bridge 162. For example, the forefoot bridge 156 and the heel bridge 162 may be disposed within a mold cavity and subjected to a combination of pressure and heat, whereby resin is delivered to the mold cavity to form the forefoot baseplate 154 and the heel baseplate 160 around the forefoot bridge 156 and the heel bridge 162, respectively. This process also forms (i) the outer first traction elements 182 and the outer second traction elements 187, which wrap around and further reinforce the central traction elements 170, 171 to form the resulting traction elements 128, 130 as well as (ii) the aperture 192 in the forefoot baseplate 154 through which the raised surface 175 of the forefoot bridge 156 is exposed. In other implementations, a different sequence for forming the sole structure 100 may be used. For example, the process may include injection molding the forefoot baseplate 154 and the heel baseplate 160 first, and then injecting the forefoot bridge 156 and the heel bridge 162.

With particular reference to FIGS. 11A-11F, heel plates 104a-104f are provided, where the traction elements may be rotationally different than the traction elements of the heel plate 104. In view of the substantial similarity in structure and function of the components associated with the heel plates 104a-104f with respect to the sole structure 100, like reference numerals are used hereinafter and in the drawings to identify like components while like reference numerals containing letter extensions are used to identify those components that have been modified.

Referring to FIG. 11A, the heel plate 104a includes the first traction elements 128h, 128i, and second traction elements 130aa, 130ba. As shown, the first traction elements 128h, 128i are generally aligned with one another along the axis A₁₂₈ transverse the longitudinal axis A₁₀ of the sole structure 100 such that the first surfaces 138h, 138i face one another, while the second surfaces 140h, 140i face away from one another. Unlike the second traction elements 130a, 130b of the heel plate 104, the heel plate 104a includes the second traction elements 130aa, 130ba positioned at an angle θ_a of approximately 60 degrees (60°) relative to the axis A₁₃₀ such that the anterior faces 144a, 144b of each of the second traction elements 130aa, 130ba are angled toward one another.

Referring to FIG. 11B, the heel plate 104b includes the first traction elements 128h, 128i, and second traction elements 130ab, 130bb. As shown, the first traction elements 128h, 128i are generally aligned with one another along the axis A₁₂₈ transverse the longitudinal axis A₁₀ of the sole structure 100 such that the first surfaces 138h, 138i face one another, while the second surfaces 140h, 140i face away from one another. Unlike the second traction elements 130a, 130b of the heel plate 104, the heel plate 104b includes the second traction elements 130aa, 130ba positioned at an angle θ_b of approximately 30 degrees (30°) relative to the axis A₁₃₀ such that the anterior faces 144a, 144b of each of the second traction elements 130ab, 130bb are angled toward one another.

Referring to FIG. 11C, the heel plate 104c includes the first traction elements 128h, 128i, and second traction elements 130ac, 130bc. As shown, the first traction elements 128h, 128i are generally aligned with one another along the axis A₁₂₈ transverse the longitudinal axis A₁₀ of the sole structure 100 such that the first surfaces 138h, 138i face one another, while the second surfaces 140h, 140i face away from one another. Unlike the second traction elements 130a, 130b of the heel plate 104, the heel plate 104c includes the second traction elements 130aa, 130ba positioned at an angle θ_c of approximately −50 degrees (−50°) relative to the axis A₁₃₀ such that the posterior faces 146a, 146b of each of the second traction elements 130ac, 130bc are angled toward one another.

Referring to FIG. 11D, the heel plate 104d includes the first traction elements 128hd, 128id, and second traction elements 130a, 130b. As shown, the second traction elements 130a, 130b are generally aligned with one another along the axis A₁₃₀ transverse the longitudinal axis A₁₀ of the sole structure 100 such that the first edges 148a, 148b face one another, while the second edges 150a, 150b face away from one another. Unlike the first traction elements 128h, 128i of the heel plate 104, the heel plate 104d includes the first traction elements 128hd, 128id positioned at an angle θ_d of approximately −120 degrees (−120°) relative to the axis A₁₂₈ such that the inner surfaces 136h, 136i are angled toward one another while the outer surfaces 134h, 134i are angled away from one another.

Referring to FIG. 11E, the heel plate 104e includes first traction elements 128he, 128ie, and second traction elements 130ae, 130be. As shown, neither the first traction elements 128he, 128ie, nor the second traction elements 130ae, 130be are aligned along the axes A₁₂₈, A₁₃₀ transverse the longitudinal axis A₁₀ of the sole structure 100. Instead, the first traction elements 128he, 128ie and the second traction elements 130ae, 130be are positioned at an angle θ_e of approximately 30 degrees (30°) relative to the axes A₁₂₈, A₁₃₀.

Referring to FIG. 11F, the heel plate 104f includes first traction elements 128hf, 128hi, and second traction elements 130af, 130bf. Unlike the heel plate 104d, the first traction elements 128hf, 128if are positioned at an angle θ_f1 of approximately −30 degrees (−30°) relative to the axis A₁₂₈ transverse the longitudinal axis A₁₀ of the sole structure 100. As shown, the second traction elements 130af, 130bf are positioned at an angle θ_f2 of approximately 30 degrees (30°) relative to the axis A₁₃₀ transverse the longitudinal axis A₁₀ of the sole structure 100. Accordingly, the first traction element 128hf and the second traction element 130af are symmetrical about the longitudinal axis A₁₀ of the sole structure 100 with the first traction element 128if and the second traction element 130bf.

Referring again to FIG. 1, the upper 200 may be formed from one or more materials that are stitched or adhesively bonded together to define the interior void 202. Suitable materials of the upper 200 may include, but are not limited to, textiles, foam, leather, and synthetic leather. The example upper 200 may be formed from a combination of one or more substantially inelastic or non-stretchable materials and one or more substantially elastic or stretchable materials disposed in different regions of the upper 200 to facilitate movement of the article of footwear 10 between the tightened state and the loosened state. The one or more elastic materials may include any combination of one or more elastic fabrics such as, without limitation, spandex, elastane, rubber or neoprene. The one or more inelastic materials may include any combination of one or more of thermoplastic polyurethanes, nylon, leather, vinyl, or another material/fabric that does not impart properties of elasticity.

The following Clauses provide an exemplary configuration for a sole structure for an article of footwear, an article of footwear, and a composite structure described above.

Clause 1. A sole structure for an article of footwear, the sole structure comprising a baseplate defining a ground-contacting surface of the sole structure and at least two ground-engaging members extending from the ground-contacting surface and including a first portion and a second portion, the first portions of the ground-engaging members being connected to one another by a bridge formed separately from the baseplate.

Clause 2. The sole structure of Clause 1, wherein the first portions of the at least two ground-engaging members are integrally formed with the bridge.

Clause 3. The sole structure of any of the preceding Clauses, wherein the first portions of the at least two ground-engaging members are formed from a different material than a material forming the baseplate.

Clause 4. The sole structure of any of the preceding Clauses, wherein the second portions of the at least two ground-engaging members are formed from the same material as a material forming the baseplate.

Clause 5. The sole structure of any of the preceding Clauses, wherein the second portions of the at least two ground-engaging members are integrally formed with the baseplate.

Clause 6. The sole structure of any of the preceding Clauses, wherein the first portions of the at least two ground-engaging members include a first leg extending substantially perpendicular to the ground-contacting surface and a second leg extending from the first leg.

Clause 7. The sole structure of Clause 6, wherein the second leg extends substantially perpendicular to the first leg.

Clause 8. The sole structure of Clause 6, wherein the second leg extends substantially parallel to the ground-contacting surface.

Clause 9. The sole structure of Clause 6, wherein the second leg defines a distal end of the at least two ground-engaging members.

Clause 10. An article of footwear incorporating the sole structure of any of the preceding Clauses.

Clause 11. A sole structure for an article of footwear, the sole structure comprising a baseplate defining a ground-contacting surface of the sole structure and at least two ground-engaging members extending from the ground-contacting surface and including a first portion and a second portion, the first portions of the at least two ground-engaging members being connected to one another by a bridge with the ground-contacting surface extending (i) between and separating the first portions of the at least two ground-engaging members and (ii) substantially parallel to the bridge.

Clause 12. The sole structure of Clause 11, wherein the first portions of the at least two ground-engaging members are integrally formed with the bridge.

Clause 13. The sole structure of any of the preceding Clauses, wherein the first portions of the at least two ground-engaging members are formed from a different material than a material forming the baseplate.

Clause 14. The sole structure of any of the preceding Clauses, wherein the second portions of the at least two ground-engaging members are formed from the same material as a material forming the baseplate.

Clause 15. The sole structure of any of the preceding Clauses, wherein the second portions of the at least two ground-engaging members are integrally formed with the baseplate.

Clause 16. The sole structure of any of the preceding Clauses, wherein the first portions of the at least two ground-engaging members include a first leg extending substantially perpendicular to the ground-contacting surface and a second leg extending from the first leg.

Clause 17. The sole structure of Clause 16, wherein the second leg extends substantially perpendicular to the first leg.

Clause 18. The sole structure of Clause 16, wherein the second leg extends substantially parallel to the ground-contacting surface.

Clause 19. The sole structure of Clause 16, wherein the second leg defines a distal end of the at least two ground-engaging members.

Clause 20. An article of footwear incorporating the sole structure of any of the preceding Clauses.

The foregoing description has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular configuration are generally not limited to that particular configuration, but, where applicable, are interchangeable and can be used in a selected configuration, even if not specifically shown or described. The same may also be varied in many ways. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.

Claims

1. A sole structure for an article of footwear, the sole structure comprising: a baseplate defining a ground-contacting surface of the sole structure; andat least two ground-engaging members extending from the ground-contacting surface and including a first portion and a second portion, the first portions of the ground-engaging members being connected to one another by a bridge formed separately from the baseplate.

2. The sole structure of claim 1, wherein the first portions of the at least two ground-engaging members are integrally formed with the bridge.

3. The sole structure of claim 1, wherein the first portions of the at least two ground-engaging members are formed from a different material than a material forming the baseplate.

4. The sole structure of claim 1, wherein the second portions of the at least two ground-engaging members are formed from the same material as a material forming the baseplate.

5. The sole structure of claim 1, wherein the second portions of the at least two ground-engaging members are integrally formed with the baseplate.

6. The sole structure of claim 1, wherein the first portions of the at least two ground-engaging members include a first leg extending substantially perpendicular to the ground-contacting surface and a second leg extending from the first leg.

7. The sole structure of claim 6, wherein the second leg extends substantially perpendicular to the first leg.

8. The sole structure of claim 6, wherein the second leg extends substantially parallel to the ground-contacting surface.

9. The sole structure of claim 6, wherein the second leg defines a distal end of the at least two ground-engaging members.

10. An article of footwear incorporating the sole structure of claim 1.

11. A sole structure for an article of footwear, the sole structure comprising: a baseplate defining a ground-contacting surface of the sole structure; andat least two ground-engaging members extending from the ground-contacting surface and including a first portion and a second portion, the first portions of the at least two ground-engaging members being connected to one another by a bridge with the ground-contacting surface extending (i) between and separating the first portions of the at least two ground-engaging members and (ii) substantially parallel to the bridge.

12. The sole structure of claim 11, wherein the first portions of the at least two ground-engaging members are integrally formed with the bridge.

13. The sole structure of claim 11, wherein the first portions of the at least two ground-engaging members are formed from a different material than a material forming the baseplate.

14. The sole structure of claim 11, wherein the second portions of the at least two ground-engaging members are formed from the same material as a material forming the baseplate.

15. The sole structure of claim 11, wherein the second portions of the at least two ground-engaging members are integrally formed with the baseplate.

16. The sole structure of claim 11, wherein the first portions of the at least two ground-engaging members include a first leg extending substantially perpendicular to the ground-contacting surface and a second leg extending from the first leg.

17. The sole structure of claim 16, wherein the second leg extends substantially perpendicular to the first leg.

18. The sole structure of claim 16, wherein the second leg extends substantially parallel to the ground-contacting surface.

19. The sole structure of claim 16, wherein the second leg defines a distal end of the at least two ground-engaging members.

20. An article of footwear incorporating the sole structure of claim 11.