Patent Description:
Articles of footwear generally include two primary elements: an upper and a sole structure. The upper is often formed from a plurality of material elements (e.g., textiles, polymer sheet layers, foam layers, leather, synthetic leather) that are stitched or adhesively bonded together to form a void on the interior of the footwear for comfortably and securely receiving a foot. More particularly, the upper forms a structure that extends over instep and toe areas of the foot, along medial and lateral sides of the foot, and around a heel area of the foot. The upper may also incorporate a lacing system to adjust the fit of the footwear, as well as permitting entry and removal of the foot from the void within the upper. Likewise, some articles of apparel may include various kinds of closure systems for adjusting the fit of the apparel. <CIT>, <CIT>, <CIT> and <CIT> disclose inductive charging systems for an article of footwear.

The invention is defined in the attached independent claim to which reference should now be made. Further, optional features may be found in the sub-claims appended thereto.

In an aspect, there is described an inductive charging system for an article of footwear that includes an internal inductive loop, the charging system comprising: a container including an interior portion that is configured to receive and contain a first article of footwear comprising an internal inductive loop, the container being provided with a cover or lid; and a first charging device associated with the interior portion of the container, the first charging device comprising an external inductive loop disposed within the first charging device. The first charging device is configured to inductively charge the first article of footwear when received in the container. The charging system is configured to receive power from an external power source for charging the first article of footwear. Inductive coupling can occur when the external inductive loop is aligned with the internal inductive loop disposed in the article of footwear. The first charging device is configured to engage with a cavity in a sole of the article of footwear to secure the internal inductive loop of the article of footwear in a predetermined alignment with the external inductive loop. The container comprises a base portion and interior side walls. The first charging device comprises two portions including a first portion and a second portion having respective first and second thicknesses. The first thickness of the first portion is less than the second thickness of the second portion. A top surface of the first portion is spaced from the base portion of the container. The top surface of the first portion is recessed with respect to a top surface of the second portion such that there is a recessed step associated with the difference in thickness of the first portion and the second portion which is configured to facilitate association between the first charging device and an article of footwear.

The following discussion and accompanying figures disclose articles of footwear and a method of assembly of an article of footwear. Concepts associated with the footwear disclosed herein may be applied to a variety of athletic footwear types, including running shoes, basketball shoes, soccer shoes, baseball shoes, football shoes, and golf shoes, for example. Accordingly, the concepts disclosed herein apply to a wide variety of footwear types.

To assist and clarify the subsequent description of various embodiments, various terms are defined herein. For consistency and convenience, directional adjectives are employed throughout this detailed description corresponding to the illustrated embodiments.

The term "longitudinal," as used throughout this detailed description and in the claims, refers to a direction extending a length of a component. For example, a longitudinal direction of an article of footwear extends between a forefoot region and a heel region of the article of footwear. The term "forward" is used to refer to the general direction in which the toes of a foot point, and the term "rearward" is used to refer to the opposite direction, i.e., the direction in which the heel of the foot is facing.

The term "lateral direction," as used throughout this detailed description and in the claims, refers to a side-to-side direction extending a width of a component. In other words, the lateral direction may extend between a medial side and a lateral side of an article of footwear, with the lateral side of the article of footwear being the surface that faces away from the other foot, and the medial side being the surface that faces toward the other foot.

The term "side," as used in this specification and in the claims, refers to any portion of a component facing generally in a lateral, medial, forward, or rearward direction, as opposed to an upward or downward direction.

The term "vertical," as used throughout this detailed description and in the claims, refers to a direction generally perpendicular to both the lateral and longitudinal directions. For example, in cases where a sole is planted flat on a ground surface, the vertical direction may extend from the ground surface upward. It will be understood that each of these directional adjectives may be applied to individual components of a sole. The term "upward" refers to the vertical direction heading away from a ground surface, while the term "downward" refers to the vertical direction heading towards the ground surface. Similarly, the terms "top," "upper," and other similar terms refer to the portion of an object substantially furthest from the ground in a vertical direction, and the terms "bottom," "lower," and other similar terms refer to the portion of an object substantially closest to the ground in a vertical direction.

The "interior" of a shoe refers to space that is occupied by a wearer's foot when the shoe is worn. The "inner side" of a panel or other shoe element refers to the face of that panel or element that is (or will be) oriented toward the shoe interior in a completed shoe. The "outer side" or "exterior" of an element refers to the face of that element that is (or will be) oriented away from the shoe interior in the completed shoe. In some cases, the inner side of an element may have other elements between that inner side and the interior in the completed shoe. Similarly, an outer side of an element may have other elements between that outer side and the space external to the completed shoe. Further, the terms "inward" and "inwardly" shall refer to the direction toward the interior of the shoe, and the terms "outward" and "outwardly" shall refer to the direction toward the exterior of the shoe.

For purposes of this disclosure, the foregoing directional terms, when used in reference to an article of footwear, shall refer to the article of footwear when sitting in an upright position, with the sole facing groundward, that is, as it would be positioned when worn by a wearer standing on a substantially level surface.

In addition, for purposes of this disclosure, the term "fixedly attached" shall refer to two components joined in a manner such that the components may not be readily separated (for example, without destroying one or both of the components). Exemplary modalities of fixed attachment may include joining with permanent adhesive, rivets, stitches, nails, staples, welding or other thermal bonding, or other joining techniques. In addition, two components may be "fixedly attached" by virtue of being integrally formed, for example, in a molding process.

For purposes of this disclosure, the term "removably attached" or "removably inserted" shall refer to the joining of two components or a component and an element in a manner such that the two components are secured together, but may be readily detached from one another. Examples of removable attachment mechanisms may include hook and loop fasteners, friction fit connections, interference fit connections, threaded connectors, cam-locking connectors, compression of one material with another, and other such readily detachable connectors.

<FIG> and <FIG> illustrates a footwear charging system ("charging system") <NUM>. As shown in <FIG>, charging system <NUM> may be a kit of parts in some embodiments. The kit of parts includes a container <NUM> configured to store components of charging system <NUM>. In different embodiments, charging system <NUM> may include a complementary pair of footwear ("pair") <NUM>, comprising a first article of footwear ("first article") <NUM> and a second article of footwear ("second article) <NUM>. For purposes of this discussion, a complementary pair of footwear refers to two articles of footwear which are designed to be worn as a pair by one user on a right foot and a left foot.

However, it should be understood that in other embodiments, the kit of parts comprising charging system <NUM> may be separate from pair of footwear <NUM>. Thus, in some cases, charging system <NUM> may be manufactured or configured separately from pair of footwear <NUM>. Furthermore, in some embodiments, charging system <NUM> may be utilized with a different pair of footwear.

Referring to <FIG>, in some embodiments, charging system <NUM> further includes a first charging device ("first device") <NUM> and a second charging device ("second device") <NUM>, which may collectively be referred to as a charging unit <NUM>. Charging unit <NUM> will be described in greater detail with respect to <FIG> below.

As shown in <FIG>, container <NUM> is configured to contain or store an article of footwear <NUM> and a charging device comprising charging unit <NUM>. As further shown in <FIG>, the container <NUM> may be further configured to contain or store a pair of footwear <NUM> including the article of footwear and a pair of charging devices including the charging device. In some embodiments, container <NUM> may be a box, such as a traditional shoe box or plastic re-sealable container, with a cover or lid <NUM>. For purposes of clarity, container <NUM> is illustrated here with a particular design. In <FIG> and <FIG>, container <NUM> is illustrated as a generally three-dimensional rectangular shoe box.

However, in other embodiments, container <NUM> can comprise any type of housing with the capacity for storing articles of footwear. For example, container <NUM> can comprise a bag which resembles a traditional duffle-type bag. Additionally, container <NUM> could be sized to fit a single pair of footwear, a single article of footwear, or multiple pairs of footwear, in different embodiments. In other embodiments, however, container <NUM> could have any other design. In particular, container <NUM> could have another shape and/or size in other embodiments. Examples of other designs for a container include, but are not limited to, any type of box, receptacle, housing, platform, bags and/or back packs. Furthermore, the container could include any provisions for carrying the container, including any type of strap or handle.

Furthermore, in embodiments including charging system <NUM>, container <NUM> includes provisions for charging various systems or components associated with an article. In particular, in including an inductive charging system (see further below), container <NUM> can provide components of the inductive charging system that allow power to be transferred from an external power source to pair of footwear <NUM>.

Referring to <FIG> and <FIG>, container <NUM> includes an interior portion <NUM> that is configured to receive one or more articles of footwear. In some embodiments, container <NUM> also includes floor portion that provides a floor or bottom for interior portion <NUM>. Referring to the specific embodiment of <FIG>, container <NUM> includes a base portion <NUM>. In some cases, base portion <NUM> may be substantially flat. In other cases, base portion <NUM> may include curves or other irregularities along at least one surface. In different embodiments, base portion <NUM> may comprise recesses, bumps, protrusions, tabs, and/or other securing or receiving regions configured to help accommodate pair of footwear <NUM>. With this arrangement, any articles placed within container <NUM> may rest upon base portion <NUM> in a substantially stable and steady manner.

Furthermore, container <NUM> may include at least one panel <NUM> in some embodiments. In some cases, panel <NUM> may be a movable panel or partition that is configured to open or be lifted in order to provide further access to interior portion <NUM> of container <NUM>. In one embodiment, panel <NUM> may be adjusted within container <NUM> to provide additional access, and in other embodiments, panel <NUM> may be removed entirely from container <NUM>. In some embodiments, pair <NUM> may be disposed or stored on top of a surface of panel <NUM> when charging system <NUM> is initially opened. However, in other embodiments, container <NUM> may not include panel <NUM>.

In some embodiments, container <NUM> can include provisions for indicating the status of a charging system associated with container <NUM>. In some cases, container <NUM> can include a visual indicator, such as a light, for indicating the charging status. In other cases, container <NUM> can include a sound-based indicator, such as a speaker configured to produce a sound to indicate the charging status. In the embodiment of <FIG>, container <NUM> includes charging indicators <NUM>, including a first light <NUM> and a second light <NUM>. In particular, charging indicators <NUM> may be LED lights that are lit to indicate the charging status of an article of footwear. For example, if first article <NUM> is being charged alone, only first light <NUM> may be lit. In another embodiment, if both articles of pair <NUM> are being charged, both first light <NUM> and second light <NUM> may be lit. Furthermore, the color of one or both charging indicators <NUM> may change depending on the status of the charging system. In different embodiments, charging indicators <NUM> may be disposed along any portion (including the interior) of container <NUM> or charging unit <NUM>. However, in other embodiments, there may be no charging indicators <NUM> included in charging system <NUM>, or they may be disposed directly on an article.

As noted above, container <NUM> includes base portion <NUM>. In different embodiments, base portion <NUM> or other portions of container <NUM> can include one or more components of charging system <NUM>. For example, in one embodiment, base portion <NUM> can include a charging station or charging dock disposed within base portion <NUM>. In some cases, the charging station may include provisions for transferring power to one or more articles of footwear. In some embodiments, a charging station can include a central processing unit (CPU) of some kind. In other embodiments, a charging station could comprise a simple circuit of some kind for receiving electrical inputs and providing an electrical output according to the inputs. In one embodiment, a charging station may include a printed circuit board. Thus, in some cases, a charging station may include a number of ports that facilitate the input and output of information and power. The term "port" means any interface or shared boundary between two conductors for purposes of this disclosure. In some cases, ports can facilitate the insertion and removal of conductors. Examples of these types of ports include mechanical connectors. In other cases, ports are interfaces that generally do not provide easy insertion or removal. Examples of these types of ports include soldering or electron traces on circuit boards. However, in one embodiment, the charging station can include one or more ports configured to transfer power to an external inductive loop. It should be understood that the reference to an external inductive loop is with respect to an inductive loop that is external to an article of footwear. In other words, an external inductive loop may be enclosed. For example, an external inductive loop can be disposed within a portion of a charging device, or base portion <NUM>, or some other portion of charging system <NUM>. In some embodiments, each external inductive loop may be associated with an internal inductive loop of a corresponding article of footwear. Inductive-type ports may be readily moved from one place to another in some embodiments.

Base portion <NUM> includes a locating feature to facilitate alignment of an article of footwear within charging system <NUM>. Base portion <NUM> can include more than one locating feature to facilitate alignment of a pair <NUM> of articles of footwear within charging system <NUM>. In particular, in embodiments using an inductive charging system, it may be necessary to ensure proper alignment of internal inductive loops disposed within each article with any external inductive loops disposed in container <NUM>.

Thus, in different embodiments, base portion <NUM> can include various recessed portions (not shown here) that correspond with first article <NUM> and/or second article <NUM>, respectively. In some cases, recessed portions may be shaped to fit the bottom surfaces of first article <NUM> and second article <NUM>, respectively. This arrangement can help ensure proper alignment between pair <NUM> and charging system <NUM>, which can facilitate efficient charging.

It should be understood that in other embodiments, other types of locating features may be used. For example, in some cases, base portion <NUM> can be configured with recesses that engage protrusions located on bottom surfaces of first article <NUM> and second article <NUM>. In other cases, base portion <NUM> can be configured with protrusions that engage recesses located on bottom surfaces of first article <NUM> and second article <NUM>. In still other embodiments, other types of locating features that are known in the art can be used. With these arrangements, each article can be maintained in a predetermined location with respect to base portion <NUM>. In particular, first article <NUM> and second article <NUM> may be positioned in a manner that orients any internal inductive loops with any external inductive loops disposed within base portion <NUM>.

In some embodiments, components of charging system <NUM> may be disposed below or adjacent to base portion <NUM>. With this arrangement, one or more of the components of charging system <NUM> can be protected from the elements and from various types of contact with one or more articles of footwear. In other embodiments, however, one or more portions or components of charging system <NUM> may be exposed within interior portion <NUM>, including charging unit <NUM>, as will be discussed below.

Although the current embodiment generally describes an external inductive loop disposed adjacent or along base portion <NUM> of container <NUM>, other embodiments can include external inductive loops disposed in other portions of the container. In other cases, for example, one or more external inductive loops are disposed on interior side walls of the container. Furthermore, while the current embodiment includes internal inductive loops disposed in a sole structure of an article of footwear, in other embodiments an internal inductive loop could be disposed in any other portion of an article of footwear. Examples of other portions that could house an internal inductive loop include, but are not limited to, a tongue, an upper sidewall, a forefoot portion of an upper, a heel portion of an upper, as well as any other portion of an article of footwear. In some embodiments, the location of an internal inductive loop in an article of footwear can be selected according to the location of an external inductive loop in a container so that the internal inductive loop can be disposed adjacent to the external inductive loop when the article is inserted into container, allowing inductive coupling (i.e., charging in an inductive based charging system) to occur.

Furthermore, container <NUM> of charging system <NUM> also includes provisions for receiving power from an external power source of some kind. In some embodiments, charging system can include a power cord <NUM> that is configured to receive power from an external power source. In one example, power cord <NUM> can be plugged into a wall socket. Power cord <NUM> can comprise a plug and cord in some embodiments. In one embodiment, power cord <NUM> may be configured for use in a wide range of environments. Thus, power cord <NUM> may be connected to a standard AC power source or outlet (i.e., sockets) in some embodiments. In one embodiment, power cord <NUM> may connect with a <NUM> volt power supply. In another embodiment, power cord <NUM> may be configured for utilization with a range of voltages, including <NUM>, <NUM>, <NUM>, <NUM>, <NUM> or other standard residential voltages, and/or DC power. In some cases, power cord <NUM> may be adapted for industrial voltage use. Thus, charging system <NUM> may be readily used in most of the locations where charging system <NUM> may be transported or used.

For purposes of description, only one article of pair of footwear <NUM> will be discussed in detail below. However, it should be understood that descriptions provided with reference to first article <NUM> may also be applicable to second article <NUM>, including directional adjectives and the identification of general components (e.g., a sole structure and an upper) comprising each article. In other embodiments, it should be understood that first article <NUM> and second article <NUM> may include some differences in structure and/or design depending on the desired use or function of pair <NUM>.

Referring to <FIG>, in different embodiments, one or both articles comprising pair <NUM> may be configured with a tensioning system <NUM>. In the current embodiment, first article <NUM> is shown in the form of an athletic shoe, such as a running shoe. However, in other embodiments, tensioning system <NUM> may be used with any other kind of footwear including, but not limited to: hiking boots, soccer shoes, football shoes, sneakers, running shoes, cross-training shoes, rugby shoes, basketball shoes, baseball shoes as well as other kinds of shoes. Moreover, in some embodiments, first article <NUM> may be configured for use with various kinds of non-sports related footwear, including, but not limited to: slippers, sandals, high heeled footwear, loafers as well as any other kinds of footwear. As discussed in further detail below, a tensioning system may not be limited to footwear and in other embodiments a tensioning system and/or components associated with a tensioning system could be used with various kinds of apparel, including clothing, sportswear, sporting equipment and other kinds of apparel. In still other embodiments, a tensioning system may be used with braces, such as medical braces.

As noted above, for consistency and convenience, directional adjectives are employed throughout this detailed description. First article <NUM> may be divided into three general regions along a longitudinal axis <NUM>: a forefoot region <NUM>, a midfoot region <NUM>, and a heel region <NUM>. Forefoot region <NUM> generally includes portions of first article <NUM> corresponding with the toes and the joints connecting the metatarsals with the phalanges. Midfoot region <NUM> generally includes portions of first article <NUM> corresponding with an arch area of the foot. Heel region <NUM> generally corresponds with rear portions of the foot, including the calcaneus bone. Forefoot region <NUM>, midfoot region <NUM>, and heel region <NUM> are not intended to demarcate precise areas of first article <NUM>. Rather, forefoot region <NUM>, midfoot region <NUM>, and heel region <NUM> are intended to represent general relative areas of article <NUM> to aid in the following discussion. Since various features of first article <NUM> extend beyond one region of first article <NUM>, the terms forefoot region <NUM>, midfoot region <NUM>, and heel region <NUM> apply not only to first article <NUM>, but also to the various features of first article <NUM>.

Referring to <FIG>, for reference purposes, a lateral axis <NUM> of article <NUM>, and any components related to first article <NUM>, may extend between a medial side <NUM> and a lateral side <NUM> of the foot. Additionally, in some embodiments, longitudinal axis <NUM> may extend from forefoot region <NUM> to a heel region <NUM>. It will be understood that each of these directional adjectives may also be applied to individual components of an article of footwear, such as an upper and/or a sole member. In addition, a vertical axis <NUM> refers to the axis perpendicular to a horizontal surface defined by longitudinal axis <NUM> and lateral axis <NUM>.

First article <NUM> may include upper <NUM> and sole structure <NUM>. Generally, upper <NUM> may be any type of upper. In particular, upper <NUM> may have any design, shape, size and/or color. For example, in embodiments where first article <NUM> is a basketball shoe, upper <NUM> could be a high top upper that is shaped to provide high support on an ankle. In embodiments where first article <NUM> is a running shoe, upper <NUM> could be a low top upper.

As shown in <FIG>, upper <NUM> may include one or more material elements (for example, meshes, textiles, foam, leather, and synthetic leather), which may be joined to define an interior void configured to receive a foot of a wearer. The material elements may be selected and arranged to selectively impart properties such as light weight, durability, air-permeability, wear-resistance, flexibility, and comfort. Upper <NUM> may define an opening <NUM> through which a foot of a wearer may be received into the interior void.

At least a portion of sole structure <NUM> may be fixedly attached to upper <NUM> (for example, with adhesive, stitching, welding, or other suitable techniques) and may have a configuration that extends between upper <NUM> and the ground. Sole structure <NUM> may include provisions for attenuating ground reaction forces (that is, cushioning and stabilizing the foot during vertical and horizontal loading). In addition, sole structure <NUM> may be configured to provide traction, impart stability, and control or limit various foot motions, such as pronation, supination, or other motions.

In some embodiments, sole structure <NUM> may be configured to provide traction for first article <NUM>. In addition to providing traction, sole structure <NUM> may attenuate ground reaction forces when compressed between the foot and the ground during walking, running or other ambulatory activities. The configuration of sole structure <NUM> may vary significantly in different embodiments to include a variety of conventional or non-conventional structures. In some cases, the configuration of sole structure <NUM> can be configured according to one or more types of ground surfaces on which sole structure <NUM> may be used.

For example, the disclosed concepts may be applicable to footwear configured for use on any of a variety of surfaces, including indoor surfaces or outdoor surfaces. The configuration of sole structure <NUM> may vary based on the properties and conditions of the surfaces on which first article <NUM> is anticipated to be used. For example, sole structure <NUM> may vary depending on whether the surface is harder or softer. In addition, sole structure <NUM> may be tailored for use in wet or dry conditions.

In some embodiments, sole structure <NUM> may be configured for a particularly specialized surface or condition. The proposed footwear upper construction may be applicable to any kind of footwear, such as basketball, soccer, football, and other athletic activities. Accordingly, in some embodiments, sole structure <NUM> may be configured to provide traction and stability on hard indoor surfaces (such as hardwood), soft, natural turf surfaces, or on hard, artificial turf surfaces. In some embodiments, sole structure <NUM> may be configured for use on multiple different surfaces.

As will be discussed further below, in different embodiments, sole structure <NUM> may include different components. For example, sole structure <NUM> may include an outsole, a midsole, a cushioning layer, and/or an insole. In addition, in some cases, sole structure <NUM> can include one or more cleat members or traction elements that are configured to increase traction with a ground surface.

In some embodiments, sole structure <NUM> may include multiple components, which may individually or collectively provide first article <NUM> with a number of attributes, such as support, rigidity, flexibility, stability, cushioning, comfort, reduced weight, or other attributes. In some embodiments, sole structure <NUM> may include an insole/sockliner, a midsole <NUM>, and a ground-contacting outer sole member ("outsole") <NUM>, which may have an exposed, ground-contacting lower surface. In some cases, however, one or more of these components may be omitted. In on embodiment, sole structure <NUM> may comprise a sole plate, as will be further discussed below.

Furthermore, in some embodiments, an insole may be disposed in the void defined by upper <NUM>. The insole may extend through each of forefoot region <NUM>, midfoot region <NUM>, and heel region <NUM>, and between lateral side <NUM> and medial side <NUM> of first article <NUM>. The insole may be formed of a deformable (for example, compressible) material, such as polyurethane foams, or other polymer foam materials. Accordingly, the insole may, by virtue of its compressibility, provide cushioning, and may also conform to the foot in order to provide comfort, support, and stability.

Midsole <NUM> may be fixedly attached to a lower area of upper <NUM> (for example, through stitching, adhesive bonding, thermal bonding (such as welding), or other techniques), or may be integral with upper <NUM>. Midsole <NUM> may be formed from any suitable material having the properties described above, according to the activity for which first article <NUM> is intended. In some embodiments, midsole <NUM> may include a foamed polymer material, such as polyurethane (PU), ethyl vinyl acetate (EVA), or any other suitable material that operates to attenuate ground reaction forces as sole structure <NUM> contacts the ground during walking, running, or other ambulatory activities.

Midsole <NUM> may extend through each of forefoot region <NUM>, midfoot region <NUM>, and heel region <NUM>, and between lateral side <NUM> and medial side <NUM> of first article <NUM>. In some embodiments, portions of midsole <NUM> may be exposed around the periphery of first article <NUM>, as shown in <FIG>. In other embodiments, midsole <NUM> may be completely covered by other elements, such as material layers from upper <NUM>. For example, in some embodiments, midsole <NUM> and/or other portions of upper <NUM> may be disposed adjacent to a bootie.

Furthermore, as shown in <FIG>, first article <NUM> may include a tongue <NUM>, which may be provided near or along a throat opening <NUM>. In some embodiments, tongue <NUM> may be provided in or near an instep region <NUM> of first article <NUM>. However, in other embodiments, tongue <NUM> may be disposed along other portions of an article of footwear, or an article may not include a tongue.

In addition, as noted above, in different embodiments, first article <NUM> may include a tensioning system <NUM>. Tensioning system <NUM> may comprise various components and systems for adjusting the size of opening <NUM> leading to an interior void and tightening (or loosening) upper <NUM> around a wearer's foot. Some examples of different tensioning systems that can be used are disclosed in <CIT>, (previously <CIT>) and entitled "Motorized Tensioning System with Sensors" and <CIT> (previously <CIT>) and entitled "Article of Footwear with Lighting System".

In some embodiments, tensioning system <NUM> may comprise one or more laces, as well as a motorized tensioning device. A lace may be configured to pass through various lacing guides <NUM>, which may be further associated with the edges of a throat opening <NUM>. In some cases, lacing guides <NUM> may provide a similar function to traditional eyelets on uppers. In particular, as a lace is pulled or tensioned, throat opening <NUM> may generally constrict so that upper <NUM> is tightened around a foot.

The arrangement of lacing guides <NUM> in <FIG> is only intended to be exemplary and it will be understood that other embodiments are not limited to a particular configuration for lacing guides <NUM>. Furthermore, the particular types of lacing guides <NUM> illustrated in the embodiments are also exemplary and other embodiments may incorporate any other kinds of lacing guides or similar lacing provisions. In some other embodiments, for example, laces could be inserted through traditional eyelets. Some examples of lace guiding provisions that may be incorporated into the embodiments are disclosed in <CIT> and entitled "Lace Guide". Additional examples are disclosed in<CIT> and entitled "Reel Based Lacing System". Still additional examples of lace guides are disclosed in <CIT> and entitled "Guides For Lacing Systems".

A lace as used with first article <NUM> may comprise any type of type of lacing material known in the art. Examples of laces that may be used include cables or fibers having a low modulus of elasticity as well as a high tensile strength. A lace may comprise a single strand of material, or can comprise multiple strands of material. An exemplary material for the lace is SPECTRA™, manufactured by Honeywell of Morris Township NJ, although other kinds of extended chain, high modulus polyethylene fiber materials can also be used as a lace. Still further exemplary properties of a lace can be found in the Reel Based Lacing Application mentioned above.

Thus, in some embodiments, a lace may be passed through lacing guides <NUM>. In other embodiments, a lace may pass through internal channels within upper <NUM> after entering channel openings that are near lacing guides <NUM>. In some embodiments, internal channels extend around the sides of upper <NUM> and guide the lace towards a motorized tensioning device disposed in sole structure <NUM>. In some cases, the motorized tensioning device may include provisions for receiving portions of a lace. In some cases, end portions of the lace can exit internal channels of upper <NUM> and can pass through apertures in a housing unit that contains a motorized tensioning device.

In some embodiments, a motorized tensioning device may generally be configured to automatically apply tension to a lace for purposes of tightening and loosening upper <NUM>. A motorized tensioning device may thus include provisions for winding a lace onto, and unwinding a lace from, a spool internal to the motorized tensioning device. Moreover, the provisions may include an electric motor that automatically winds and unwinds the spool in response to various inputs or controls.

As noted above, in different embodiments, charging system <NUM> includes charging unit <NUM> comprising first device <NUM>. Charging unit <NUM> may further comprise a second device <NUM>. Charging unit <NUM> may facilitate the transfer of power to one or more articles of footwear. In other words, charging unit <NUM> may substantially comprise the charging station and/or the functions of a charging system as described above with respect to <FIG>. Referring now to <FIG>, an isometric view of a portion of container <NUM> is depicted, including a view of interior portion <NUM> containing first device <NUM> and second device <NUM>. In some embodiments, first device <NUM> and/or second device <NUM> may be joined to the surface of or a portion of container <NUM>. Thus, in some embodiments, as noted above, base portion <NUM> or other portions of container <NUM> can include or be adjacent to one or more components of charging system <NUM>.

In one embodiment, charging unit <NUM> may be connected with, integral with, or fixedly attached to base portion <NUM> or a portion of container <NUM>. For example, in one embodiment, base portion <NUM> can contact, link, join, or be otherwise attached to a portion of first device <NUM> and/or second device <NUM>. In some cases, first device <NUM> and/or second device <NUM> can include a port that connects charging unit <NUM> with charging system <NUM>. First device <NUM> and/or second device <NUM> include an external inductive loop disposed within the device. As will be discussed further below, in some embodiments, each external inductive loop may be associated with an internal inductive loop of a corresponding article of footwear.

Furthermore, base portion <NUM> includes one or more locating features to facilitate alignment of charging unit <NUM> within interior portion <NUM>. As noted previously, in using an inductive charging system, it may be necessary to ensure proper alignment of internal inductive loops within the system with respect to other regions. Thus, in different embodiments, base portion <NUM> can include various recessed portions (not shown here) that correspond with first device <NUM> and/or second device <NUM>, respectively. In some cases, recessed portions may be shaped to accommodate the insertion or installation of bottom surfaces of first device <NUM> and/or second device <NUM>, respectively. This arrangement can help ensure proper alignment between base portion <NUM> and charging unit <NUM>, which can facilitate efficient charging.

It should be understood that in other embodiments, other types of locating features may be used. For example, in some cases, base portion <NUM> can be configured with recesses that engage protrusions located on bottom surfaces of first device <NUM> and/or second device <NUM>. According to the invention, base portion <NUM> is configured with protrusions that engage recesses located on bottom surfaces of first device <NUM> and/or second device <NUM>. In still other embodiments not covered by the claims, other types of locating features that are known in the art can be used. With these arrangements, each charging device can be maintained in a predetermined location with respect to base portion <NUM>. In particular, first article <NUM> and second article <NUM> may be subsequently positioned in a manner that orients any internal inductive loops with the external inductive loops associated with first device <NUM> and/or second device <NUM> and allow inductive coupling to occur.

To better illustrate an embodiment of charging unit <NUM> for the reader, a top-down view <NUM> and a side view <NUM> of first device <NUM> are included in <FIG>. Although second device <NUM> is not similarly depicted, it should be understood that features and descriptions provided regarding first device <NUM> may be generally applicable to second device <NUM> in different embodiments.

As shown in top-down view <NUM>, first device <NUM> includes two portions. A first portion <NUM> may be disposed adjacent to a second portion <NUM>. First portion <NUM> and second portion <NUM> may be joined along a central region <NUM>. In some embodiments, first portion <NUM> and second portion <NUM> may be fixedly joined or integrally joined. In one embodiment, first portion <NUM> and second portion <NUM> comprise substantially similar materials along their outer surfaces.

First device <NUM> may have different shapes in different embodiments. In some embodiments, first portion <NUM> may comprise a generally rectangular base associated with second portion <NUM>. Furthermore, second portion <NUM> may comprise a square-like portion with a rounded or curved edge on one side. However, in other embodiments, the dimensions and/or shape of first portion <NUM> and/or second portion <NUM> may differ, including but not limited to oblong, triangular, square, rectangular, oval, elliptical, or other regular or irregular shapes. In some embodiments, the shape of first device <NUM>, and in particular second portion <NUM>, may be configured to correspond or match with a portion of first article <NUM>, as will be discussed further below.

In addition, different portions of first device <NUM> may comprise varying dimensions. In some cases, the dimensions of first device <NUM> may be configured to accommodate a corresponding portion in an article of footwear, as noted above. In the embodiment of <FIG>, it can be seen that first portion <NUM> has a first length <NUM> and second portion <NUM> has a second length <NUM>, together comprising the full length of first device <NUM>. In some embodiments, first length <NUM> and second length <NUM> may be substantially similar, as shown in <FIG>. However, in other embodiments, first length <NUM> may be greater than or smaller than second length <NUM>.

First device <NUM> extends from a first end <NUM> to a second end <NUM>. In some embodiments, first end <NUM> is associated with the curved region of first portion <NUM>, while second end <NUM> is associated with a substantially straight or linear end of second portion <NUM>. In addition, first portion <NUM> has a first width <NUM> associated with the rounded first end <NUM>, and second portion <NUM> has a second width <NUM> associated with second end <NUM>. Central region <NUM> may also include a third width <NUM>. In some embodiments, third width <NUM> may be substantially similar to second width <NUM>, as shown in <FIG>. Furthermore, in some embodiments, first width <NUM> may be smaller than second width <NUM>. However, in other embodiments, first width <NUM> may be substantially similar to or greater than second width <NUM>.

Referring now to side view <NUM>, first portion <NUM> also includes a first thickness <NUM>, and second portion <NUM> includes a second thickness <NUM>. In one embodiment, first thickness <NUM> may be generally consistent throughout first portion <NUM>, and second thickness <NUM> may be generally consistent throughout second portion <NUM>. However, in other embodiments, there may be irregularities throughout first device, such that the thicknesses of the two portions are not consistent. In addition, as shown in <FIG>, first thickness <NUM> is less than second thickness <NUM>.

Due to the difference in thickness between first portion <NUM> and second portion <NUM>, a portion of first device <NUM> is raised with respect to another portion. Referring to side view <NUM>, it can be seen that second portion <NUM> is raised with respect to first portion <NUM> along central region <NUM>, such that there is a third thickness <NUM> representing the difference in thickness between the two portions. In other words, a first top surface <NUM> of first portion <NUM> is recessed with respect to a second top surface <NUM> of second portion <NUM>. Thus, there is a recessed step <NUM> that is formed, associated with the difference in thickness of first top surface <NUM> and second top surface <NUM>. This difference in thickness facilitates the link or association between first device <NUM> and an article of footwear, as will be discussed below.

In some embodiments, while first top surface <NUM> and second top surface <NUM> together may be uneven or discontinuous, a bottom surface <NUM> of first device <NUM> may be substantially continuous. In one embodiment, bottom surface <NUM> may be generally smooth and/or flat. However, in other embodiments, bottom surface <NUM> may comprise undulations or bumps, or other types of texturing. In some cases there may be traction elements disposed along bottom surface <NUM> to help anchor or secure first device <NUM>, for example.

Furthermore, extending between bottom surface <NUM> and the top surface (comprising both first top surface <NUM> and second top surface <NUM>), first device <NUM> can include sidewalls <NUM>. In different embodiments, sidewalls <NUM> can represent or be associated with the varying thicknesses of first device <NUM>. In some embodiments, sidewalls <NUM> may be substantially continuous, and extend in a smooth manner around the perimeter of first device <NUM>. However, in other embodiments, sidewalls <NUM> may include protrusions or other irregularities that can help secure or anchor first device <NUM>, and/or help connect first device <NUM> to other components.

Furthermore, in some embodiments, the housing associated with charging devices and other components of charging system can be formed of various materials. In some embodiments, first device <NUM> can comprise different plastics, polymers, thermoplastic polyurethane (TPU), nylon, glass, carbon fiber, carbon composites, or other types of materials. In some embodiments, portions of a charging device may comprise a light-diffusive material.

Referring now to <FIG>, in different embodiments, charging unit <NUM> may be configured for use with pair <NUM>. For purposes of illustration the discussion herein will focus on first device <NUM> and first article <NUM>. However, it should be understood that features and descriptions provided regarding first device <NUM> and first article <NUM> (as well as components associated with first article <NUM>) may be generally applicable to second device <NUM> and second article <NUM> in some embodiments.

In <FIG>, a bottom isometric view of pair <NUM> including first article <NUM> and second article <NUM> is illustrated adjacent to charging unit <NUM> comprising first device <NUM> and second device <NUM>. Dotted lines are included to represent an embodiment of a manner in which pair <NUM> may be subsequently aligned and positioned with respect to charging unit <NUM>. As noted previously in <FIG>, first article <NUM> can include midsole <NUM> and outsole <NUM>. Furthermore, midsole <NUM> can be disposed adjacent to a sole plate <NUM>. Sole plate <NUM> includes a portion along midfoot region <NUM> that is an exposed outer surface, which comprises a compartment with a cavity <NUM>. As will be discussed with respect to <FIG> and <FIG>, a portion of a bottom surface <NUM> of cavity <NUM> may be substantially similar in general shape and dimensions to first top surface <NUM> of first portion <NUM> of first device <NUM>. This correspondence between two components may allow the two surfaces to readily contact or adjoin one another in some embodiments.

In <FIG>, pair <NUM> is shown as mounted or installed on charging unit <NUM>. Upper <NUM> and portions of sole structure <NUM> are shown in dotted line to reveal the accommodation and alignment of the two charging devices with each article. Thus, as noted with respect to <FIG>, a portion of the exposed bottom surface <NUM> of cavity <NUM> of sole plate <NUM> of first article <NUM> can be positioned such that it is disposed adjacent to first top surface <NUM> of first portion <NUM> of first device <NUM>. Furthermore, cavity <NUM> may be disposed in a manner that is recessed with respect to midsole <NUM>. In some embodiments, a recess <NUM> associated with the recess formed along article <NUM> associated with cavity <NUM> may be substantially similar to first thickness <NUM> of first portion <NUM> of first device <NUM> (described in detail with respect to <FIG>). In addition, third thickness <NUM> associated with the difference between first thickness <NUM> and second thickness <NUM> (see <FIG>) can allow the surface associated with central region <NUM> to press or contact a side surface of first article <NUM> along midsole <NUM>. These correlations may permit cavity <NUM> to more snugly join and/or be lodged against the recessed step <NUM> (see <FIG>) formed along central region <NUM> of first device <NUM>. However, in other embodiments, first thickness <NUM> and depth <NUM> may differ, and the two elements may be joined together in a different way.

Referring now to <FIG>, the dimensions of first device <NUM> relative to regions of sole structure <NUM> are illustrated in a bottom view to provide the reader with a better understanding of the secure fit that can occur between the charging device and the article during use of the charging system described herein. In a first view <NUM>, first device <NUM> is shown above and adjacent to lateral side <NUM> of first article <NUM>. First portion <NUM> has a first area <NUM> associated with first top surface <NUM>, and cavity <NUM> has a second area <NUM> associated with bottom surface <NUM> that is disposed on lateral side <NUM> of a midsole bridge <NUM>. As first article <NUM> and first device <NUM> are brought toward one another, as represented by second view <NUM>, the dimensions of first device <NUM> and particularly of first portion <NUM> (described in detail with respect to <FIG>) are "slid" into or snugly received by recess <NUM> that is present between cavity <NUM> and midsole <NUM>. In one embodiment, a lateral edge of cavity <NUM> has an edge length <NUM> that is substantially similar to third width <NUM> of central region <NUM>. Furthermore, the curvature of lateral side <NUM> of midsole bridge <NUM> may be substantially similar to the curvature of first end <NUM>.

In some embodiments, the shape and dimensions of first device <NUM> and first article <NUM> may be formed to provide substantially matching portions, and allow a complementary mounting of sole structure <NUM> with first device <NUM>. The additional stability and weight provided by second portion <NUM> as it is pressed against lateral side <NUM> of first article <NUM> can increase the snug fit between the charging device and the article. As noted previously, with these arrangements, each article can be maintained in a predetermined location with respect to their charging units during charging, which is especially beneficial in embodiments that incorporate an inductive charging system. In particular, first article <NUM> may be positioned in a manner that orients any internal inductive loops with any external inductive loops disposed within first portion <NUM>.

In different embodiments, sole plate <NUM> as described herein may be assembled, mounted, installed with, incorporated, joined to, or otherwise disposed adjacent to an additional component of first article <NUM>. <FIG> provide various examples of the joining of sole plate <NUM> with different components associated with the sole structure of an article of footwear. As will be described below, in different embodiments, sole plate <NUM> with specially dimensioned cavity <NUM> (better illustrated in <FIG>) can be utilized with different sized footwear components. In other words, sole plate <NUM> may remain consistently shaped and dimensioned, yet be installed with different sole components that include different sizes and shapes. In one embodiment, sole plate <NUM> can thus be colloquially referred to as a "one size fits all" sole plate. Furthermore, in other embodiments, though sole plate <NUM> may be dimensioned differently than described here, sole cavity <NUM> may remain consistent in shape and dimension, continuing to permit different sized articles to be charged by a single "universal" charging system.

In <FIG>, sole plate <NUM> is shown with a midsole set <NUM>. Midsole set <NUM> can include several differently sized and/or shaped midsoles that can each be used with sole plate <NUM> in different embodiments. In <FIG>, for purposes of illustration, midsole set <NUM> comprises a first midsole <NUM>, a second midsole <NUM>, a third midsole <NUM>, a fourth midsole <NUM>, and a fifth midsole <NUM>. For purposes of reference, each midsole may be divided into a forefoot portion <NUM>, a bridge portion <NUM>, and a heel portion <NUM>, as identified for the reader specifically with reference to third midsole <NUM>. In different embodiments, the shape of each midsole can vary. In one embodiment, the shape of a midsole may resemble a generally elliptical or oval shape along forefoot portion <NUM>, and a generally oblong rectangular shape comprising heel portion <NUM>. Furthermore, in one embodiment, forefoot portion <NUM> and heel portion <NUM> can be joined along a substantially rectangular shaped bridge portion <NUM>. Bridge portion <NUM> may be narrow relative to either forefoot portion <NUM> or heel portion <NUM>. In other embodiments, the perimeter and shape of different portions of a midsole may vary from what is depicted here, and include any regular or irregular shape.

Each midsole of midsole set <NUM> can include varying dimensions in some embodiments. Thus, first midsole <NUM> includes a first length <NUM>, second midsole <NUM> includes a second length <NUM>, third midsole <NUM> includes a third length <NUM>, fourth midsole <NUM> includes a fourth length <NUM>, and fifth midsole <NUM> includes a fifth length <NUM>. In some embodiments, two or more lengths may differ. As shown in <FIG>, first length <NUM> is greater than second length <NUM>, second length <NUM> is greater than third length <NUM>, third length <NUM> is greater than fourth length <NUM>, and fourth length <NUM> is greater than fifth length <NUM>. In other embodiments, other midsoles may include varying sized lengths. In addition, the length of a single midsole may be irregular or non-uniform across the width of the midsole (i.e., along lateral axis <NUM>).

Furthermore, in some embodiments, two or more widths of the midsoles may differ. For exemplary purposes, first midsole <NUM> is labeled with a first maximum width <NUM>, and fifth midsole <NUM> is labeled with a second maximum width <NUM>. In <FIG>, first maximum width <NUM> is larger than second maximum width <NUM>. In other embodiments, other midsoles may include varying sized widths. In addition, the width of a single midsole may be irregular or non-uniform across the length of the midsole (i.e., along longitudinal axis <NUM>). In addition, first midsole <NUM> has a forefoot portion that is associated with a first forefoot length <NUM> and a heel portion that is associated with a first heel length <NUM>, and second midsole <NUM> has a forefoot portion that is associated with a second forefoot length <NUM> and a heel portion that is associated with a second heel length <NUM>.

In <FIG>, first forefoot length <NUM> is greater than second forefoot length <NUM>, and first heel length <NUM> is greater than second heel length <NUM>. In other embodiments, other midsole forefoot portions and/or heel portions may include varying sized lengths or sizes. Thus, with respect to <FIG>, it is important to note that each midsole can vary widely with respect to each other. Specifically, in some embodiments, first midsole <NUM> can have a forefoot portion that is dimensioned differently than the forefoot portion of fifth midsole <NUM> (or another midsole). Similarly, in some embodiments, first midsole <NUM> can have a heel portion that is dimensioned differently than the heel portion of fifth midsole <NUM> (or another midsole). In some embodiments, each midsole can be framed or configured to correspond with an individual user's foot size or type, as well as a user's comfort or functional preferences.

It can further be seen that, in different embodiments, sole plate <NUM> may be generally smaller in size than the various midsoles of midsole set <NUM>. For example, while sole plate <NUM> has a plate length <NUM>, fifth midsole <NUM> (here representing the smallest midsole of midsole set <NUM>) has fifth length <NUM> that is greater than plate length <NUM>. In addition, plate width <NUM> is generally smaller than second maximum width <NUM> of fifth midsole <NUM>. Furthermore, a plate area <NUM> associated with the area of an inner surface side <NUM> of sole plate <NUM> may be significantly less than midsole area <NUM> associated with the area of an inner surface side of fifth midsole <NUM>, where the inner surface sides represent the side of each sole component that would face a foot when an article including the various sole components is worn.

Thus, in some embodiments, various midsoles may be large enough to receive or accommodate at least a portion of sole plate <NUM>. In some cases, a midsole may form or include a recessed portion that can be configured to receive or snugly accommodate sole plate <NUM> or another component.

In order for a single uniformly size sole plate <NUM> to be accommodated by or mounted within the various midsoles of midsole set <NUM>, each midsole may comprise a portion that universally corresponds to a portion of sole plate <NUM> in some embodiments. Referring now specifically to bridge portion <NUM> labeled with third midsole <NUM> in <FIG>, it may be noted that relative to a central longitudinal axis <NUM>, bridge portion <NUM> can be disposed further toward one side versus another side. In other words, if it is understood that central longitudinal axis <NUM> represents a longitudinal midline of third midsole <NUM>, bridge portion <NUM> can be disposed toward or along medial side <NUM>. In other embodiments, bridge portion <NUM> may be disposed toward lateral side <NUM>. In some cases, bridge portion <NUM> may be laterally offset with respect to central longitudinal axis <NUM>. In another embodiment, bridge portion <NUM> may be disposed more centrally and/or encompass both medial side <NUM> and lateral side <NUM>. Furthermore, the dimensions of bridge portion <NUM> may remain substantially similar along different midsoles in some embodiments.

As a result of the shape and size of bridge portion <NUM>, there can be one or more open regions disposed or formed adjacent to bridge portion <NUM> in different embodiments. In <FIG>, a first region <NUM> is shown associated with first midsole <NUM>, a second region <NUM> is shown associated with second midsole <NUM>, a third region <NUM> is shown associated with third midsole <NUM>, a fourth region <NUM> is shown associated with fourth midsole <NUM>, and a fifth region <NUM> is shown associated with fifth midsole <NUM>. In some embodiments, each open region may generally correspond or align with a portion of sole plate <NUM> when sole plate <NUM> is installed in the midsole.

As noted above, each midsole of midsole set <NUM> can include varying dimensions in some embodiments. However, in other embodiments, portions of each individual midsole may be generally consistent with respect to another midsole. In <FIG>, first region <NUM> has a first size <NUM>, second region <NUM> has a second size <NUM>, third region <NUM> has a third size <NUM>, fourth region <NUM> has a fourth size <NUM>, and fifth region <NUM> has a fifth size <NUM>. In some embodiments, as shown in <FIG>, two or more region sizes may be substantially similar. Thus, for example, first size <NUM>, second size <NUM>, third size <NUM>, fourth size <NUM>, and fifth size <NUM> can be substantially similar in size in one embodiment. In some embodiments, first size <NUM>, second size <NUM>, third size <NUM>, fourth size <NUM>, and fifth size <NUM> may be substantially similar in shape. Thus, as shown in <FIG>, first region <NUM>, second region <NUM>, third region <NUM>, fourth region <NUM>, and fifth region <NUM> are substantially similar across midsole set <NUM>. In other embodiments, there may be some differences between the regions in shape and dimension.

Referring now to <FIG>, sole plate <NUM> can be disposed or deposited within a recess associated with a midsole. In some embodiments, the arrangement of sole plate <NUM> with respect to the bridge portion of various midsoles (as discussed in <FIG>) can allow the ready accommodation of sole plate <NUM> in a variety of midsole sizes. In <FIG>, an isometric side view of an embodiment of three assembled sole structures is shown. Each assembled sole structure includes an outsole joined to a midsole. In addition, in some embodiments, as noted earlier, an assembled sole structure of the present embodiments can include a sole plate. Referring to <FIG>, a first assembled sole structure <NUM>, a second assembled sole structure <NUM>, and a third assembled sole structure <NUM> are shown.

First assembled sole structure <NUM> includes a first outsole <NUM>, first midsole <NUM>, and a first sole plate <NUM>. Second assembled sole structure <NUM> includes a second outsole <NUM>, third midsole <NUM>, and a second sole plate <NUM>. Furthermore, third assembled sole structure <NUM> includes a third outsole <NUM>, fifth midsole <NUM>, and a third sole plate <NUM>. As discussed with respect to <FIG>, in some embodiments, midsoles may comprise various sizes or dimensions. It can be further seen in <FIG> that although each assembled sole structure generally varies in size and/or dimensions due to its differently sized midsoles, the sole plates associated with first assembled sole structure <NUM>, second assembled sole structure <NUM>, and third assembled sole structure <NUM> can be substantially similar. In other words, at least a portion of first sole plate <NUM>, second sole plate <NUM>, and third sole plate <NUM> may comprise a substantially similar shape and dimension in one embodiment. For example, the portion associated with the cavity of the sole plates may be configured to be substantially equivalent between individual sole plates. In one embodiment, a first cavity <NUM> associated with first sole plate <NUM>, a second cavity <NUM> associated with second sole plate <NUM>, and a third cavity <NUM> associated with third sole plate <NUM> may be substantially similar in shape, size, and/or dimensions. As an example, in one embodiment, first cavity <NUM> may be understood to include a first width, a first depth, and a first length, defining a first volume. In addition, second cavity <NUM> can comprise a second width, a second depth, and a second length, defining a second volume. Furthermore, third cavity <NUM> can comprise a third width, a third depth, and a third length, defining a third volume. In some embodiments, the first width, the second width, and the third width can be substantially similar. In addition, in some embodiments, the first depth, the second depth, and the third depth can be substantially similar. In a further embodiment, the first length, the second length, and the third length can be substantially similar. Thus, in some embodiments, the first volume, the second volume, and the third volume are substantially similar. Specifically, in some embodiments, the volume associated with first cavity <NUM> may be substantially similar to the volume associated with second cavity <NUM>, and the volume associated with second cavity <NUM> may be substantially similar to the volume associated with third cavity <NUM>.

In another embodiment, the substantial entirety of first sole plate <NUM> may be substantially similar to the substantial entirety of second sole plate <NUM>. In another embodiment, the substantial entirety of second sole plate <NUM> may be substantially similar to third sole plate <NUM>. Thus, in some embodiments, a single-sized ("universal") sole plate may be accommodated by, installed, or mounted within variously dimensioned and shaped midsoles.

In some embodiments, this universal pairing may be possible because each midsole includes a portion that consistently corresponds to a portion of the sole plate. As described previously with respect to <FIG>, it can be noted again now with reference to <FIG> that first region <NUM> of first midsole <NUM> has first size <NUM>, third region <NUM> of third midsole <NUM> has a third size <NUM>, and fifth region <NUM> of fifth midsole <NUM> has a fifth size <NUM>. In one embodiment, first size <NUM>, third size <NUM>, and fifth size <NUM> can be substantially similar. In other words, as each sole plate has a cavity that remains substantially similar in size, the portion of each midsole that aligns with the cavity of the sole plate when the sole plate and the midsole are joined can also be sized consistently. Thus, even in midsoles that are larger or smaller relative to one another, the region that aligns with the cavity of the sole plate can remain generally the same size in different embodiments. In some embodiments, this can allow a single size sole plate to be inserted into or used with multiple sized midsoles. In some cases, this can streamline the manufacturing process of the sole structure, as well as increase the production efficiency of the assembled articles. In addition, as will be described below with respect to <FIG>, the universal sizing of the sole plate cavity can facilitate the assembly, installation, or insertion of other components in some embodiments.

Furthermore, in different embodiments, the outsoles of the present embodiments may include a shape and size substantially similar to that of at least a portion or bottom surface of the midsole. For example, in <FIG>, it can be seen that first outsole <NUM> is adjacent to and covers a large portion of the bottom surface of first midsole <NUM>, second outsole <NUM> is adjacent to and covers a large portion of the bottom surface of third midsole <NUM>, and third outsole <NUM> is adjacent to and covers a large portion of the bottom surface of fifth midsole <NUM>. In other embodiments, an outsole may comprise a different shape or size. In one embodiment, various outsoles may cover a smaller portion of the midsoles than depicted here. In other embodiments, the outsole may be substantially larger than its corresponding midsole. In one embodiment, there may be no outsole.

In order to provide the reader with greater understanding of the proposed embodiments, an additional view of sole plate <NUM> is depicted in <FIG>. Sole plate <NUM> can include different regions or sections in some embodiments. For purposes of reference, sole plate <NUM> may be divided into a forward portion <NUM>, an intermediate portion <NUM>, and a rear portion <NUM>. In different embodiments, the shape of sole plate <NUM> can vary. In one embodiment, the shape of sole plate <NUM> may resemble a generally oblong shape comprising forward portion <NUM>, joined to a substantially rectangular shape comprising intermediate portion <NUM>. Intermediate portion <NUM> may be also joined to a substantially oblong shape comprising rear portion <NUM>. In other embodiments, the perimeter and shape of different portions of sole plate <NUM> may vary from what is depicted here, and include any regular or irregular shape.

In some embodiments, portions of sole plate <NUM> may comprise a substantially flat or two-dimensional material or structure. The term "two-dimensional" as used throughout this detailed description and in the claims refers to any generally flat material exhibiting a length and width that are substantially greater than a thickness of the material. Although two-dimensional materials may have smooth or generally untextured surfaces, some two-dimensional materials will exhibit textures or other surface characteristics, such as dimpling, protrusions, ribs, or various patterns, for example. In other embodiments, the geometry of sole plate <NUM> could vary and could include various contours or features associated with parts of a foot, for example, the sole region of a foot.

Furthermore, in some embodiments, sole plate <NUM> and other components of a sole structure can be formed of various material compositions. In some embodiments, sole plate <NUM> can be associated with a higher stiffness or hardness than the upper. In one embodiment, sole plate <NUM> is at least partially formed of thermoplastic polyurethane (TPU). In other embodiments, sole plate <NUM> may comprise a glass-filled nylon material. In still other embodiments, sole plate <NUM> may comprise a glass-filled TPU. In some embodiments, sole plate <NUM> may comprise a light-diffusive material.

In one embodiment, one or more components may be configured to provide various functions or features to an article of footwear. For example, in <FIG>, a component <NUM> comprises a housing unit. The housing unit can contain a motorized tensioning device <NUM> in one embodiment. In other embodiments, different mechanical or electrical components may be included, such as circuitry, textiles, or other materials. In the embodiment illustrated in <FIG>, sole plate <NUM>, and specifically cavity <NUM> formed in intermediate portion <NUM>, may be manufactured such that sole plate <NUM> is configured to receive and snugly accommodate component <NUM>. In some embodiments, the housing unit shown in <FIG> may include various mechanisms or components that can be utilized in tensioning system <NUM> (see <FIG>). For example, within the interior of component <NUM> there may be a battery (or other power source), circuitry (or other control mechanism), spools, gears, a motor, light sources, and/or other mechanisms. In one embodiment, component <NUM> can include internal inductive loops <NUM> that can be charged by an inductive charging system. In some embodiments, component <NUM> may be easily deposited or inserted into cavity <NUM> of sole plate <NUM>, as shown in <FIG>.

In different embodiments, after a sole plate is assembled within an article of footwear and a component is incorporated into the article, the article may be ready for use or mounting in a charging system. In some embodiments, articles of various sizes, shapes, dimensions, and/or configurations may be charged through charging system <NUM> (see <FIG>). Referring to <FIG>, an article set <NUM> is depicted, including a third article <NUM>, a fourth article <NUM>, a fifth article <NUM>, a sixth article <NUM>, and a seventh article <NUM>. Each article is depicted in a bottom isometric view.

For purposes of reference, it can be seen in <FIG> that third article <NUM> includes a first outsole <NUM>, a first sole plate <NUM>, and first midsole <NUM>, while fourth article <NUM> includes a second outsole <NUM>, a second sole plate <NUM>, and second midsole <NUM>. In addition, fifth article <NUM> includes a third outsole <NUM>, a third sole plate <NUM>, and third midsole <NUM>, sixth article <NUM> includes a fourth outsole <NUM>, a fourth sole plate <NUM>, and fourth midsole <NUM>, and seventh article <NUM> includes a fifth outsole <NUM>, a fifth sole plate <NUM>, and fifth midsole <NUM>. In different embodiments, while first midsole <NUM>, second midsole <NUM>, third midsole <NUM>, fourth midsole <NUM> and/or fifth midsole <NUM> may be sized differently from one another (as described with respect to <FIG>), each article may include sole plates that are substantially similar to one another. Similarly, first outsole <NUM>, second outsole <NUM>, third outsole <NUM>, fourth outsole <NUM>, and fifth outsole <NUM> may differ in shape and/or dimensions. Nevertheless, in the embodiment of <FIG>, first sole plate <NUM>, second sole plate <NUM>, third sole plate <NUM>, fourth sole plate <NUM>, and fifth sole plate <NUM> disposed within the different articles comprising article set <NUM> are substantially similar to one another. As an example, in some cases, first sole plate <NUM> in third article <NUM> and second sole plate <NUM> in fourth article <NUM> may be interchanged such that first sole plate <NUM> is associated with fourth article <NUM> and second sole plate <NUM> is associated with third article <NUM>.

In some embodiments, the availability of a universally sized sole plate may provide benefits to a charging system. For example, again referring to <FIG>, first sole plate <NUM> has a first cavity <NUM>, second sole plate <NUM> has a second cavity <NUM>, third sole plate <NUM> has a third cavity <NUM>, fourth sole plate1046 has a fourth cavity <NUM>, and fifth sole plate <NUM> has a fifth cavity <NUM>. In one embodiment, first cavity <NUM>, second cavity <NUM>, third cavity <NUM>, fourth cavity <NUM>, and fifth cavity <NUM> may be substantially similar in size, shape, and dimension. Furthermore, in some cases, first cavity <NUM> may be approximately duplicated as second cavity <NUM>. In embodiments where each sole plate is substantially similar, the dimensions of each cavity may be likewise substantially similar. In other words, portions of sole plates may be manufactured to be substantial reproductions of one another, yet be installed in articles with differently sized footwear components. In addition, in some embodiments, first cavity <NUM>, second cavity <NUM>, third cavity <NUM>, fourth cavity <NUM>, and fifth cavity <NUM> may be substantially similar in size, shape, and dimension while at least some of the remaining portions of first sole plate <NUM>, second sole plate <NUM>, third sole plate <NUM>, fourth sole plate <NUM>, and fifth sole plate <NUM> differ from one another. In other words, sole plates may be sized or shaped differently for use in different size or type of footwear, yet nevertheless be compatible with the same charging system due to the universal size and dimension of each cavity included or formed in the individual sole plates.

As noted above with respect to <FIG>, in some embodiments, each cavity disposed within a sole plate can include a component. In <FIG>, the different components disposed within the various articles are illustrated with a dotted line. In the embodiment of <FIG>, first cavity <NUM> includes a first component <NUM>, second cavity <NUM> includes a second component <NUM>, third cavity <NUM> includes a third component <NUM>, fourth cavity <NUM> includes a fourth component <NUM>, and fifth cavity <NUM> includes a fifth component <NUM>. Furthermore, each component can be associated with a housing that comprises a device, as noted with respect to <FIG>. In some embodiments, the device disposed within the component can include an inductive loop. Referring to <FIG>, first component <NUM> includes a first loop <NUM>, second component <NUM> includes a second loop <NUM>, third component <NUM> includes a third loop <NUM>, fourth component <NUM> includes a fourth loop <NUM>, and fifth component <NUM> includes a fifth loop <NUM>. In some embodiments, each loop can be charged by an inductive charging system. In some cases, each of the loops identified herein can be positioned in the housing to facilitate the charging of components. For example, as shown in <FIG>, first loop <NUM> is disposed toward or adjacent to the exposed portion of first cavity <NUM>. As described earlier with respect to <FIG>, the exposed portion of first cavity <NUM> may be placed or disposed adjacent to first portion <NUM> of first device <NUM>, which can permit alignment of the internal inductive loops (here first loop <NUM>) disposed within each article with any external inductive loops disposed in first device <NUM>.

<FIG> and <FIG> illustrate an isometric view of container <NUM>. In <FIG>, container <NUM> is substantially empty, where charging unit <NUM> is disposed within interior portion <NUM>, but neither first device <NUM> nor second device <NUM> have been linked with an article. Cord <NUM> remains unconnected to any additional power source. In some embodiments, indicators <NUM> comprising first indicator <NUM> and second indicator <NUM> are not lit. In other words, charging has not yet been initiated in the embodiment of <FIG>.

In <FIG>, charging system <NUM> has been activated and articles are being charged. Thus, container <NUM> now includes pair <NUM> comprising first article <NUM> and second article <NUM>, inserted within interior portion <NUM>. Referring to <FIG>, a first internal inductive loop <NUM> of first article <NUM> may be aligned with first external inductive loop <NUM> in first device <NUM>. Likewise, a second internal inductive loop <NUM> of second article <NUM> may be aligned with a second external inductive loop <NUM> in second device <NUM>. With this arrangement, power can be efficiently transferred from charging system <NUM> to pair <NUM>. Furthermore, as described above, variously sized articles that include the universal sole plate may be inserted or used with charging system <NUM> without altering the dimensions of charging unit <NUM>. This can facilitate the efficiency of manufacture of charging system <NUM> in some embodiments. In one embodiment, the universal charging system may permit a user to purchase additional articles and charge different pairs of footwear with a single charging system. In another embodiment, a group of individuals who have different shoe sizes (and different sized articles) may share a single charging system.

In some embodiments, electricity received at an external power source can be transferred to the charging unit via cord <NUM>. The electricity can then be transferred to first external inductive loop <NUM>. By using an external power source with an alternating current, power can be inductively transferred between first external inductive loop <NUM> and first internal inductive loop <NUM>. In particular, an alternating magnetic field can be created at first external inductive loop <NUM>, which induces a current in first internal inductive loop <NUM>. This arrangement allows power to be transferred to a rechargeable power source, such as a battery, disposed within first article <NUM>, which can provide power for a lighting system and/or an automatic fastening system.

In a similar manner, electricity received at the charging unit can be transferred to second external inductive loop <NUM>. By using an external power source with an alternating current, power can be inductively transferred between second external inductive loop <NUM> and second internal inductive loop <NUM>. In particular, an alternating magnetic field can be created at second external inductive loop <NUM>, which induces a current in second internal inductive loop <NUM>. This arrangement allows power to be transferred to a rechargeable power source, such as a battery, disposed within second article <NUM>, which can provide power for a lighting system and/or an automatic fastening system.

Furthermore, it should be understood that the charging system described herein may differ in other ways. For example, the charging system of the present disclosure may include features of charging systems disclosed in <CIT> (previously <CIT>) and entitled "Charging System for an Article of Footwear".

It should be understood that the embodiments of the charging system depicted herein may be used in different ways. For purposes of illustration, <FIG> provides a flow chart depicting one method of charging articles of footwear. In one embodiment, the method of charging can include a first step <NUM> of mounting a first article of footwear with a first size onto a charging device. In different cases, the article may include various sole structure components, as discussed above. In a second step <NUM>, an exposed portion of a first sole plate in the first article of footwear can be aligned with a first portion of the charging device. A third step <NUM> can comprise charging the first article of footwear. In a fourth step <NUM>, the first article of footwear can be removed from the charging device. In some embodiments, the first article of footwear may be removed after first article of footwear is fully charged. A fifth step <NUM> can involve mounting a second article of footwear with a second size onto the charging device. In a sixth step <NUM>, an exposed portion of a second sole plate in the second article of footwear can be aligned with the first portion of the charging device. In one embodiment, the size of the second sole plate and the size of the first sole plate are substantially similar. A seventh step <NUM> can involve charging the second article of footwear.

In other embodiments, a pair of footwear can be charged simultaneously and removed to permit the charging of additional pairs of footwear. Furthermore, additional embodiment can further comprise the step of inserting the first article of footwear into an interior void of a container that contains the charging device. In another embodiment, second step <NUM> of mounting the first article of footwear may include aligning the first sole plate with the charging device in a manner that inductively couples an internal inductive loop disposed within the first article of footwear with an external inductive loop disposed in the first portion of the charging device. In some embodiments, there can be a further step comprising removing the second article of footwear, and mounting a third article of footwear onto the charging device and charging the third article of footwear. In one embodiment, the third article of footwear has a third size different from the first size and the second size. Furthermore, in some embodiments, the step of mounting the third article of footwear includes aligning a portion of a cavity associated with a third sole plate disposed in the third article of footwear with the first portion of the charging device. In other embodiments, the method can include placing the first article of footwear along a base portion disposed along the bottom of the container. In addition, the step of removing the first article of footwear may also include waiting until the first article of footwear is fully charged in some embodiments.

It will be understood that the charging system discussed in this detailed description and in the claims can be used independently of a fastening system or a lighting system. In particular, since the charging system discussed in this detailed description is used to charge a battery of some kind, that battery can be further coupled to one or more different electrical systems. Generally, the charging system discussed in this detailed description and in the claims may be used to power any type of electrical system associated with an article of footwear. For example, in another embodiment, the charging system discussed in this embodiment could be used to charge a battery to power an accelerometer or a sensor for tracking distance and motion. In still another embodiment, the charging system discussed here could be used to power a heating and/or cooling system for an article. Furthermore, it will be understood that the charging system could be used to power two or more electrical systems simultaneously. In addition, the embodiments of the "universal" charging system as described herein may be utilized in any type or configuration of footwear or article of apparel with any type of system or mechanism.

Thus, in some embodiments, by providing a universally sized intermediate portion <NUM> (see <FIG>) along a midsole and a single sized cavity in the corresponding sole plate, a single charging system and/or charging units can be used with different sized footwear. In other words, the charging system need not be adjusted to accommodate different sizes of footwear. Furthermore, portions of the charging system can retain their original shape and dimensions and be used with footwear ranging in size from a "child size" to an "adult size". For example, in some embodiments the charging system can be utilized with footwear ranging between U. standard sizes <NUM> and larger. In another embodiment, the charging system could be used with footwear ranging from U. standard size <NUM> and <NUM>. In one embodiment, the charging system could be used with footwear ranging from U. standard child size <NUM> to a men's size <NUM> or larger.

Claim 1:
An inductive charging system for an article of footwear that includes an internal inductive loop, the charging system comprising:
a container (<NUM>) including an interior portion (<NUM>) that is configured to receive and contain a first article of footwear (<NUM>) comprising an internal inductive loop, the container (<NUM>) being provided with a cover or lid; and
a first charging device (<NUM>) associated with the interior portion (<NUM>) of the container (<NUM>), the first charging device (<NUM>) comprising an external inductive loop disposed within the first charging device (<NUM>),
wherein the first charging device (<NUM>) is configured to inductively charge the first article of footwear (<NUM>) when received in the container (<NUM>),
wherein the charging system is configured to receive power from an external power source for charging the first article of footwear (<NUM>),
whereby inductive coupling can occur when the external inductive loop is aligned with the internal inductive loop disposed in the article of footwear (<NUM>),
wherein the first charging device (<NUM>) is configured to engage with a cavity (<NUM>) in a sole (<NUM>) of the article of footwear (<NUM>) to secure the internal inductive loop of the article of footwear (<NUM>) in a predetermined alignment with the external inductive loop,
wherein the container (<NUM>) comprises a base portion (<NUM>) and interior side walls,
wherein the first charging device (<NUM>) comprises two portions including a first portion (<NUM>) and a second portion (<NUM>) having respective first and second thicknesses (<NUM>, <NUM>), wherein the first thickness (<NUM>) of the first portion (<NUM>) is less than the second thickness (<NUM>) of the second portion (<NUM>), wherein a top surface (<NUM>) of the first portion (<NUM>) is spaced from the base portion (<NUM>) of the container (<NUM>), and wherein the top surface (<NUM>) of the first portion (<NUM>) is recessed with respect to a top surface (<NUM>) of the second portion (<NUM>) such that there is a recessed step (<NUM>) associated with the difference in thickness of the first portion (<NUM>) and the second portion (<NUM>) which is configured to facilitate association between the first charging device (<NUM>) and an article of footwear (<NUM>).