Articles of footwear having a pulley system

Abstract

A tensioning system for use with an article of footwear includes a pulley assembly. The pulley assembly may include a first disc and a second disc connected by a central axis. A tensioning element may be engaged around the central axis. An annular element may be used to prevent the tensioning element from disengaging from the pulley when there is slack in the tensioning element. The tensioning element may provide support for multiple areas of the article of footwear, or may be used to close the throat of the article of footwear.

Description

[0001] This application is a divisional application of the invention patent application with application date of May 16, 2017, application number 201780030850.8, and invention name “Footwear with pulley system”.

[0002] Priority claim

[0003] This application claims the benefit of priority to U.S. Patent Application Serial No. 15 / 158,045, filed on May 18, 2016, which is incorporated herein by reference in its entirety.

[0004] background

[0005] The present embodiments relate generally to articles of footwear, and particularly to systems for tensioning articles of footwear.

[0006] Articles of footwear generally include two major elements: an upper and a sole structure. The upper may be formed from a variety of materials that are stitched or adhesively bonded together to form a cavity within the footwear for comfortably and securely receiving the foot. The sole structure is secured to a lower portion of the upper and is generally positioned between the foot and the ground. In many articles of footwear, including athletic footwear styles, the sole structure often includes an insole, a midsole, and an outsole.

[0007] Overview

[0008] In one embodiment, a tensioning system for an article of footwear includes a pulley including a first disc, a second disc, and a central axis extending between the first disc and the second disc. A hole extends through the central axis. The system includes a first tensioning member having a portion extending around the central axis and a second tensioning member having a portion extending through the hole.

[0009] In another embodiment, an article of footwear having an upper with a lace for tightening a throat of the upper includes a pulley having a first disk, a second disk, and a central axis extending between the first disk and the second disk. A hole extends through the central axis. The system includes a cable having a portion extending around the central axis, a first end and a second end of the cable being secured to the article of footwear, wherein a portion of the lace extends through the hole in the pulley.

[0010] In another embodiment, a tensioning system for an article of footwear includes a pulley having a first disk and a second disk. The system includes a central axis extending between the first disk and the second disk. A circumferential gap is bounded by the first disk and the second disk in opposite axial directions, and the circumferential gap is bounded by the central axis in a radial direction. The first disk has a first lip and the second disk has a second lip, the first lip and the second lip facing each other. The system includes a partial ring element arranged in the circumferential gap. The system includes a first tensioning element arranged around the central axis of the pulley, and a portion of the first tensioning element is arranged between the central axis and the partial ring element. The axial distance between the first lip on the first disk and the second lip on the second disk is less than the axial thickness of the partial ring element.

[0011] In another embodiment, a tensioning system for an article of footwear includes a pulley having a first disk and a second disk and a central axis extending between the first disk and the second disk. The pulley includes a circumferential gap arranged between the first disk and the second disk, the circumferential gap being defined in a radial direction by the central axis. The pulley includes a hole extending through the central axis. The system includes an external ring element, the external ring element also including at least two circumferential openings. The pulley is fixed together with the external ring element so that the external ring element partially covers the circumferential gap. The first tensioning element includes a portion arranged between the central axis and the external ring element. The second tensioning element extends through the hole in the central axis.

[0012] In another embodiment, a tensioning system for an article of footwear includes a pulley including a first disk and a second disk and a central shaft extending between the first disk and the second disk. The pulley includes a circumferential gap disposed between the first disk and the second disk, the circumferential gap being bounded in a radial direction by the central shaft. The pulley includes a hole extending through the central shaft. The system includes an outer annular element, the outer annular element also including at least two circumferential openings. The pulley is fixed together with the outer annular element so that the outer annular element partially covers the circumferential gap. The first tensioning element includes a portion disposed between the central shaft and the outer annular element. The second tensioning element extends through the hole in the central shaft.

[0013] In another embodiment, the article of footwear includes an upper having a shoe back with a shoe throat opening. The article of footwear also includes a lacing system for fastening the shoe throat opening, the lacing system including at least one pulley assembly and a shoelace, wherein at least one pulley assembly is attached to the upper adjacent to the shoe throat opening. The one pulley assembly also includes a pulley and an annular element. The shoelace extends through a circumferential gap of the pulley. The annular element prevents the shoelace from falling off from the circumferential gap.

[0014] Upon careful study of the following drawings and detailed description, other systems, methods, features and advantages of the embodiments will be or will become apparent to one of ordinary skill in the art. It is intended that all such additional systems, methods, features and advantages be included in this description and this overview, within the scope of the embodiments, and protected by the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The embodiments may be better understood with reference to the following drawings and descriptions. The components in the drawings are not necessarily drawn to scale, but emphasis is placed on illustrating the principles of the embodiments. In addition, in the drawings, like reference numerals indicate corresponding parts throughout the different views.

[0017] Figure 1 is a schematic perspective view of an embodiment of an article of footwear having a dynamic tensioning system;

[0018] Figure 2 yes Figure 1 A schematic perspective view of some components of a dynamic tensioning system of FIG. 1 , the tensioning system including a pulley assembly;

[0019] Figure 3 yes Figure 2 a schematic exploded view of the components of;

[0020] Figure 4 yes Figure 2 A schematic perspective cross-sectional view of a pulley assembly;

[0021] Figure 5 is a schematic perspective view of an embodiment of a pulley assembly with an internal partial ring element in a first circumferential position;

[0022] Figure 6 yes Figure 5 a schematic perspective view of an embodiment of the pulley assembly with the inner partial annular element in a second circumferential position;

[0023] Figure 7 yes Figure 5 A schematic perspective view of an embodiment of a pulley assembly of , wherein the inner partial annular element is in a first circumferential position;

[0024] Figure 8 is a schematic side view of an embodiment of some components of a pulley assembly having an inner partial annular element that is movable;

[0025] Fig. 9 yes Figure 8 A schematic side view of a pulley assembly of , wherein the inner portion of the annular element rotates in a circumferential direction when the pulley assembly is pulled toward different positions;

[0026] Fig.10 is a schematic side view of another embodiment of some components of a pulley assembly;

[0027] Fig.11 is a schematic diagram of an embodiment of a pulley assembly having an inner partial annular element extending less than 180 degrees in a circumferential direction;

[0028] Fig.12 is a schematic diagram of an embodiment of a pulley assembly having an inner partial annular element extending more than 180 degrees in a circumferential direction;

[0029] Fig.13 is a schematic perspective view of an embodiment of a pulley assembly including an outer annular element;

[0030] Fig.14 yes Fig.13 a schematic exploded view of a pulley assembly;

[0031] Fig.15 yes Fig.13 A schematic cross-sectional view of a pulley assembly;

[0032] Fig.16 is a schematic diagram of an embodiment of a pulley assembly;

[0033] Fig.17 yes Fig.16 Schematic diagram of a pulley assembly of , wherein the outer annular element rotates in a circumferential direction when the pulley assembly is pulled toward different positions;

[0034] Fig.18 is a schematic diagram of another embodiment of some components of a pulley assembly;

[0035] Fig.19 is a schematic side view of an embodiment of a pulley assembly subjected to stress applied by a tensioning element extending through a central bore of the pulley assembly;

[0036] Fig. 20 is a schematic side view of another embodiment of a pulley subjected to stress applied by a tensioning element extending through a central hole of the pulley;

[0037] Fig.21 is a schematic perspective view of another embodiment of an outer annular element;

[0038] Fig. 22 yes Fig.21A schematic diagram of an outer annular element of , wherein the tensioning element is in a first configuration;

[0039] Fig.23 yes Fig.21 A schematic diagram of an outer annular element of wherein the tensioning element is in a second configuration;

[0040] Fig.24 is a schematic side view of an embodiment of an article of footwear having a dynamic tensioning system;

[0041] Fig.25 yes Fig.24 a schematic side view of an article of footwear wherein the article of footwear has been tightened;

[0042] Fig.26 is a schematic side view of an embodiment of an article of footwear having a fastening system including a plurality of pulley assemblies; and

[0043] Fig. 27 yes Fig.26 Schematic side view of an article of footwear.

[0044] Detailed Description

[0045] Figure 1 2 is a schematic diagram of an article of footwear 100 that also includes a dynamic tensioning system 200. In one embodiment, the article of footwear 100 is in the form of an athletic shoe. The arrangements discussed herein for the dynamic tensioning system 200 may be included in various other types of footwear, including, but not limited to, basketball shoes, hiking boots, soccer shoes, rugby shoes, tennis shoes, mountaineering shoes, sneakers, running shoes, cross-training shoes, rugby shoes, rowing shoes, baseball shoes, and other types of shoes. Furthermore, in some embodiments, the arrangements discussed herein may be incorporated into various other types of non-sports related footwear, including, but not limited to, slippers, sandals, high heels, and loafers.

[0046] For clarity, the following detailed description discusses features of article of footwear 100 (also referred to simply as article 100). However, it should be understood that other embodiments may include corresponding articles of footwear (e.g., when article 100 is a left-foot article of footwear, other embodiments may include a right-foot article of footwear) that may share some and possibly all of the features of article 100 described herein and shown in the accompanying drawings.

[0047] Embodiments may be characterized by various directional adjectives and references to portions. These directional and reference portions may help describe various portions of an article of footwear. In addition, these directional and reference portions may also be used to describe subcomponents of an article of footwear (e.g., directions and / or portions of a midsole structure, an external sole structure, a tensioning system, an upper, or any other component).

[0048] For consistency and convenience, directional adjectives are used in all of this detailed description corresponding to the illustrated embodiments. The term "longitudinal" as used in all of this detailed description and in the claims refers to the direction or axis of the length of an extension component (e.g., an upper or sole component). In some embodiments, the longitudinal direction may extend from the forefoot portion of the component to the heel portion. In addition, the term "lateral" used throughout this detailed description and in the claims refers to the direction or axis extending along the width of the component. For example, the lateral direction may extend between the medial side and the lateral side of the component. In addition, the term "vertical" used throughout this detailed description and in the claims refers to the direction or axis substantially perpendicular to the lateral direction and the longitudinal direction. For example, in an embodiment in which an article is placed flat on a ground surface, the vertical direction may extend upward from the ground surface. Additionally, the term "inside" or "proximal" refers to a portion of an article that is closer to the interior of the article or closer to the foot when the article is worn. Similarly, the term "outside" or "distal" refers to a portion of an article that is further away from the interior of the article or the foot and is arranged. Thus, for example, a proximal surface of a component is disposed closer to the interior of the article than a distal surface of the component.The present detailed description utilizes these directional adjectives to describe the article and various components of the article, including the upper, midsole structure, and / or outsole structure.

[0049] Article 100 may be characterized by a plurality of different regions or portions. For example, article 100 may include a forefoot region, a midfoot region, a heel region, a vamp region, and an instep region. In addition, components of article 100 may also include corresponding regions or portions. Figure 1 , article 100 can be divided into a forefoot region 110, a midfoot region 112, and a heel region 114. Forefoot region 110 can be generally associated with the toes and the joints connecting the metatarsal bones and the phalanges. Midfoot region 112 can be generally associated with the arch of the foot. Similarly, heel region 114 can be generally associated with the heel of the foot including the calcaneus. Article 100 can also include an instep region 116.

[0050] Furthermore, for reference purposes, article 100 may include lateral side 120 and medial side 122. In particular, lateral side 120 and medial side 122 may be opposing sides of article 100. Furthermore, medial side 122 and lateral side 120 may extend through forefoot region 110, midfoot region 112, and heel region 114.

[0051] Article 100 may include an upper 102 and a sole structure 106. In various embodiments, the sole structure 106 may be configured to provide traction for the article 100. Therefore, in some embodiments, traction elements may be included in the sole structure 106. In addition to providing traction, the sole structure 106 may attenuate ground reaction forces when the sole structure 106 is compressed between the foot and the ground during walking, running, pushing, or other ambulatory activities. The configuration of the sole structure 106 may vary significantly in various embodiments to include various conventional or unconventional structures. In some embodiments, the configuration of the sole structure 106 may be configured according to one or more types of surfaces on which the sole structure 106 may be used. Examples of surfaces include, but are not limited to, natural turf, synthetic turf, mud, hardwood floors, skim, wood, boards, footboards, boat ramps, and other surfaces.

[0052] The parts of sole structure 106 can be formed by various materials. For example, sole structure 106 can include compressible polymer foam elements (for example, polyurethane or ethylene vinyl acetate foam), which reduce ground reaction force (that is, provide cushioning) when being compressed between foot and ground during walking, running or other walking activities. In other structures, sole structure 106 can include fluid-filled chamber, plate, regulator or other elements that further reduce force, improve stability or affect the motion of foot. In addition, other parts of sole structure 106, such as outsole, can be formed by wear-resistant rubber material with texture to give traction friction. It should be understood that the embodiments herein describe the structure of sole structure 106 as an example of sole structure that can be used in combination with vamp 102, and multiple other conventional or unconventional structures of sole structure 106 can also be used. Therefore, the structure and feature of sole structure 106 or any sole structure used together with vamp 102 can be very different.

[0053] The sole structure 106 is fixed to the upper 102 and extends between the foot and the ground when the article 100 is worn. In different embodiments, the sole structure 106 may include different components. For example, the sole structure 106 may include an outsole. The sole structure 106 may also include a midsole and / or an insole. In some embodiments, one or more of these components may be optional.

[0054] In various embodiments, upper 102 may be coupled to sole structure 106 and define an interior cavity designed to receive a wearer's foot. In some embodiments, upper 102 includes opening 130 that provides an entrance for the foot to enter the interior cavity of upper 102. In some embodiments, opening 130 may be arranged along or near an ankle portion. Figure 1 As can be seen in FIG. 1 , in one embodiment, the upper 102 further includes a tongue 132 . The tongue 132 can be arranged against a throat opening 134 (of a throat 133 of the upper 102 ), and the tongue 132 can block access to the interior cavity of the upper 102 via the throat opening 134 .

[0055] In some embodiments, the article may include fastening provisions. Some embodiments may include a tensioning element, which may also be referred to as a tensioning member. The term "tensioning element" as used throughout this detailed description and in the claims refers to any component having a generally elongated shape and a high tensile strength. In some instances, the tensioning element may also have a generally lower elasticity. Examples of different tensioning elements include, but are not limited to, laces, cables, straps, and ropes. In some cases, the tensioning element may be used to fasten and / or tighten articles, including articles of clothing and / or articles of footwear. In other cases, the tensioning element may be used to apply tension at a predetermined location for the purpose of actuating some component or system.

[0056] like Figure 1 As shown in , article 100 includes a tensioning element 150 (e.g., a lace) that is used to close throat opening 134 and thereby adjust the size of throat 133. In addition, tensioning element 150 can be used to facilitate entry and removal of upper 102 around the foot. Figure 1 The embodiments of the present invention use shoelaces, but in other embodiments other tensioning elements may be used, including but not limited to straps, ropes, cords, cables, and other types of tensioning elements. In addition, embodiments may include any other type of fastening arrangement, such as loops, eyelets, D-rings, or other arrangements that can facilitate fastening of an article through the use of one or more tensioning elements.

[0057] exist Figure 1In some embodiments, article 100 further includes another tensioning element 160. In some embodiments, tensioning element 160 can be a cable or cord. Tensioning element 160 can be secured to any portion of article 100. In some embodiments, tensioning element 160 can include a first end 162 and a second end 164, both secured to a strobel layer, or substantially secured to the location where upper 102 and sole structure 106 are secured together. An intermediate portion 166 of tensioning element 160 can then be coupled to tensioning element 150 so that tension applied to the lace can be used to pull tensioning element 160 and thereby help improve support along lateral side 120 of upper 102.

[0058] Embodiments may include arrangements for dynamically coupling two or more tensioning elements. Dynamically coupling two tensioning elements may allow tension to be distributed across the elements so as to optimally balance the loads applied across the upper and foot, which may promote improved comfort and fit. In some embodiments, pulleys may be used to dynamically couple two or more tensioning elements. In other embodiments, other arrangements may be used to dynamically couple two or more tensioning elements. Of course, in other embodiments, two or more tensioning elements may be coupled in a static manner, for example, by tying one tensioning element to a portion of another tensioning element.

[0059] exist Figure 1 , article 100 includes pulley assembly 202. Pulley assembly 202, tensioning element 150, and tensioning element 160 together may collectively constitute dynamic tensioning system 200. As discussed in further detail below, pulley assembly 202 facilitates the transfer of tension between tensioning element 150 and tensioning element 160 in a manner that may optimally balance the load across upper 102 because both tensioning element 150 and tensioning element 160 may be able to move relative to pulley assembly 202.

[0060] Figure 2 is a perspective view of an embodiment of a portion of the pulley assembly 202 and the tensioning element 160 . Figure 3 yes Figure 2 An exploded perspective view of the components shown in FIG.

[0061] As shown in the drawings, each pulley assembly generally has a geometry that can be characterized by radial, axial, and circumferential directions. Figure 2, the pulley assembly 202 can be associated with a set of axial directions 290 (or simply axial directions 290), a set of radial directions 292 (or simply radial directions 292), and a set of circumferential directions 294 (or simply circumferential directions 294). Thus, the axial directions 290 can correspond to the thickness of the pulley assembly 202, while the radial directions 292 are associated with the radius of the pulley assembly 202. The circumferential directions 294 are associated with the circumference of the pulley or the angular position around the pulley.

[0062] Reference Figures 2 to 3 , the pulley assembly 202 includes a pair of disks, a central shaft, and an inner annular element that helps prevent the tensioning element 160 from falling off the pulley assembly 202 during use. The pulley assembly 202 may include a first pulley member 210 and a second pulley member 230. The first pulley member 210 includes an outer side 211 and an inner side 212. The first pulley member 210 may also include a first disk 214 and a first central axial extension 216. In addition, the first pulley member 210 may include a first peripheral axial extension 218, which may also be referred to as a lip. Figure 3 As shown in FIG. 1 , a first central axial extension portion 216 and a first peripheral axial extension portion 218 extend from the inner side 212, while the outer side 211 has a generally flat surface (see FIG. 1 ). Figure 2 ). Additionally, a shallow recess or groove 219 may be formed along the inner side 212 between the first central axially extending portion 216 and the first peripheral axially extending portion 218 .

[0063] In different embodiments, the geometry of the first pulley member 210 can vary. The first disk 214 can have a generally round or circular shape. The first central axial extension 216 can have a cylindrical shape. In addition, the first central axial extension 216 can include a first central hole 217. In some embodiments, the first disk 214 can have a generally round or circular shape. The first central axial extension 216 can have a cylindrical shape. In addition, the first central axial extension 216 can include a first central hole 217. Figure 3 , the first peripheral axially extending portion 218 can extend around the entire circumference of the first pulley member 210. However, in other embodiments, the first peripheral axially extending portion 218 can extend around only portions of the circumference.

[0064] The second pulley member 230 includes an outer side 231 and an inner side 232. The second pulley member 230 may also include a second disc 234 and a second central axial extension 236. In addition, the second pulley member 230 may include a second peripheral axial extension 238, which may also be referred to as a lip. Figure 3As seen in FIG. 2 , the second central axially extending portion 236 and the second peripheral axially extending portion 238 extend from the inner side 232, while the outer side 231 has a generally flat surface similar to the outer side 211 of the first pulley member 210. In addition, a shallow recess or groove 239 can be formed along the inner side 232 between the second central axially extending portion 236 and the second peripheral axially extending portion 238.

[0065] In different embodiments, the geometry of the second pulley member 230 can vary. The second disk 234 can have a generally round or circular shape. The second central axial extension 236 can have a cylindrical shape. In addition, the second central axial extension 236 can include a second central hole 237. In some embodiments, the second disk 234 can have a generally round or circular shape. The second central axial extension 236 can have a cylindrical shape. In addition, the second central axial extension 236 can include a second central hole 237. Figure 3 In the embodiment shown in FIG. 2 , the second peripheral axially extending portion 238 can extend around the entire circumference of the second pulley member 230. However, in other embodiments, the second peripheral axially extending portion 238 can extend around only some portions of the circumference.

[0066] The pulley assembly 202 may also include a partial annular member 250, also referred to simply as the annular member 250. The annular member 250 includes a first retaining portion 252, a second retaining portion 254, and an outer portion 256. In addition, the annular member 250 includes an inner facing surface 258 and an outer facing surface 259.

[0067] In order to allow the tensioning element 160 to pass between the inwardly facing surface 258 and the opposing surface of the pulley member, the annular element 250 is constructed as a partial ring. Specifically, the annular element 250 includes a first end 260 and a second end 262 separated in a circumferential direction. In different embodiments, the circumferential range of the partial annular element can vary. In some embodiments, the partial annular element can be a half ring (i.e., extending approximately 180 degrees of a full circle, or alternatively, extending approximately half of the total circumference of a corresponding full circle). In other embodiments, the partial annular element can have an angular range of less than 180 degrees. For example, Fig.11 Another embodiment of a pulley assembly 590 is illustrated in which an annular element 592 has an angular extent of less than 180 degrees. In such an embodiment, the annular element 592 has a length in the circumferential direction that is less than half of the total circumference of the corresponding circumferential gap of the pulley assembly 590. In still other embodiments, a portion of the annular element may have an angular extent of greater than 180 degrees. For example, Fig.12 Another embodiment of a pulley assembly 594 is illustrated in which the annular element 596 has an angular extent greater than 180 degrees. In such an embodiment, the annular element 596 has a length in the circumferential direction that is greater than half of the total circumference of the corresponding circumferential gap of the pulley assembly 594. Figures 2 to 3In the embodiment of the present invention, the annular element 250 comprises a partial ring extending through approximately 180 degrees of a full circle or ring. In other words, the annular element 250 has a length in the circumferential direction that is equal to half the circumference of the circumferential gap 300 (see Figure 4 ).

[0068] In different embodiments, the cross-sectional geometry of the ring element 250 may vary. Some embodiments may utilize a round or circular cross-section. Figures 2 to 3 In the embodiment shown in , the ring element 250 has a T-shaped cross-sectional shape due to the configuration of the first retaining portion 252, the second retaining portion 254 and the outer portion 256. In addition, the cross-sectional shape of the ring element 250 (taken through a plane perpendicular to the circumferential direction) is approximately constant along the length of the ring element 250.

[0069] Figure 4 is like Figure 2 A cross-sectional view of the pulley assembly 202 is shown in FIG. Figure 4 , the first pulley member 210 can be permanently attached or connected to the second pulley member 230. Specifically, the first central axial extension portion 216 of the first pulley member 210 can be inserted into the second central hole 237 of the second central axial extension portion 236 (see Figure 3 ). In some embodiments, the first central axial extension portion 216 and the second central axial extension portion 236 can be configured to snap fit together. Some other embodiments not shown may include additional flanges, protrusions, recesses or other arrangements to facilitate such a snap fit. In other embodiments, the first central axial extension portion 216 can be bonded to the second central axial extension portion 236. For example, the surface 240 of the first central axial extension portion 216 can be glued or otherwise bonded to the surface 242 of the second central axial extension portion 236. The assembly of the first pulley member 210 and the second pulley member 230 exposes and opens the first central hole 217 of the first central axial extension portion 216 so that another tensioning element (e.g., Figure 1 The tensioning element 150 shown in FIG. 21 may be inserted through the first central hole 217 .

[0070] Meanwhile, the first central axial extension 216 coupled to the second central axial extension 236 may include a central shaft 270 extending between the first disk 214 and the second disk 234. In addition, in the pulley assembly 202, the first disk 214, the second disk 234 and the central shaft 270 may be collectively referred to as a "pulley". Throughout the detailed description and claims, the term "shaft" may be used interchangeably with "shaft" or "column". It can be appreciated that in other embodiments, the pulley assembly may include a flat disk coupled to another member including a disk and a shaft. In other words, in some other embodiments, only one pulley member may include an axially extending shaft, and the shaft may be directly coupled to the inner surface of the corresponding disk. In still other embodiments, each disk and the shaft extending therebetween may be formed as a single component by molding, three-dimensional printing, etc. Therefore, the central shaft of the pulley member does not need to include two or more different components (e.g., the first central axial extension and the second central axial extension), and may be a single integral part.

[0071] It can be further seen that the pulley assembly 202 includes a circumferential gap 300. The circumferential gap 300 is a gap that extends generally in the circumferential direction around the pulley assembly 202. Specifically, the circumferential gap 300 is at least partially open around the entire circumference. The circumferential gap 300 is bounded in opposite axial directions by the first disk 214 and the second disk 234. In a radial direction toward the center of the pulley assembly 202, the circumferential gap 300 is bounded by the surface 271 of the central shaft 270. At some locations, the circumferential gap 300 can also be bounded in a radial direction (i.e., in a radial direction away from the center of the pulley assembly 202) by the annular element 250.

[0072] The pulley assembly 202 may also include a circumferential opening 320 that provides access to the circumferential gap 300 along the peripheral edge of the pulley assembly 202. Due to the presence of the annular element 250, the circumferential opening 320 may not extend around the entire circumference of the pulley assembly 202.

[0073] As in Figure 4 As can be clearly seen in FIG. 3 , the circumferential opening 320 can have an axial thickness 322 in the axial direction, while the circumferential gap 300 can have an axial thickness 302 in the axial direction. In some embodiments, the presence of a lip (e.g., the first circumferential axial extension 218 and the second circumferential axial extension 238) on the periphery of the pulley assembly 202 means that the axial thickness 322 is less than the axial thickness 302.

[0074] The annular element 250 can be disposed within the circumferential gap 300. Specifically, the first retaining portion 252 and the second retaining portion 254 can be retained within the groove 219 and the groove 239 of the circumferential gap 300, respectively. In addition, the outer portion 256 of the annular element 250 can be sized to fit in the space between the first peripheral axial extension portion 218 and the second peripheral axial extension portion 238, thereby closing the circumferential opening 320.

[0075] The first retaining portion 252 and the second retaining portion 254 impart an axial thickness 330 to the annular element 250 at the inwardly facing surface 258. In at least some embodiments, the axial thickness 330 may be approximately similar to the axial thickness 302 of the circumferential gap. In some cases, the axial thickness 330 may be slightly less than the axial thickness 302 to make it easier for the annular element 250 to slide within the circumferential gap 300. In addition, the axial thickness 330 of the inwardly facing surface 258 is substantially greater than the axial thickness 322 of the circumferential opening 320. This difference in size prevents the annular element 250 from passing between the first peripheral axial extension 218 and the second peripheral axial extension 238 (i.e., passing through the circumferential opening 320), and thereby ensures that the annular element 250 is retained within the circumferential gap 300.

[0076] like Figure 4 As can be seen in FIG. 1 , the tensioning element 160 can pass through the circumferential opening 320 into the circumferential gap 300. Inside the circumferential gap 300, the tensioning element 160 can be sized to fit into a section of the circumferential gap 300 and pass between the annular element 250 and the central shaft 270. Then, another portion of the tensioning element 160 (at Figure 4 320) can return from the circumferential gap 300 at a position where the annular element 250 does not block the circumferential opening 320.

[0077] This exemplary configuration allows the tensioning element 160 to pass around the central axis 270 of the pulley assembly 202 to facilitate displacement of the tensioning element 160 about the pulley assembly 202. This configuration also ensures that the tensioning element 160 does not fall out of the circumferential gap 300 (i.e., fall off the pulley assembly 202) by using the annular element 250. Thus, this arrangement allows for a system in which the tensioning element does not become detached when slack is present in the system.

[0078] In different embodiments, the material used for one or more elements of the pulley assembly can vary. Exemplary materials that can be used for either the pulley member or the annular element include, but are not limited to, plastic, rubber, metal, and any other material. In at least one embodiment, each pulley member and the annular element are made of a plastic material. In at least some embodiments, the annular element can be made of a material that has a sufficiently low coefficient of friction with the material of the pulley member to allow the annular element to rotate easily.

[0079] Figures 5 to 7 Each illustrates a perspective view of the pulley assembly 202, wherein the annular element 250 is arranged in a different circumferential position or angular position relative to the first pulley member 210 and the second pulley member 230. Figures 5 to 7 In each of the figures, for illustrative purposes, the first pulley member 210 is associated with the reference numeral 400. In particular, Figures 5 to 7 The stationary position of the marker 400 in FIG. 1 indicates that the first pulley member 210 and the second pulley member 230 are stationary (ie, do not change position) from one figure to another.

[0080] As previously discussed, the annular member 250 may be displaced circumferentially about the pulley assembly 202 . Figure 5 The annular element 250 is shown in a first circumferential position 402. Figure 6 In the embodiment, the annular element 250 passes through the circumferential gap 300 in the counterclockwise direction (see Figure 4 ) has been rotated to the second circumferential position 404, while the first pulley member 210 and the second pulley member 230 remain in position (ie, not rotating). Figure 7 As shown in FIG. 4 , the annular element 250 can continue to rotate around the pulley assembly 202 until it reaches the third circumferential position 406 and can eventually return to the Figure 5 The initial position shown in .

[0081] Because the ring element 250 can rotate, the ring element 250 can be repositioned in response to changing forces during the tightening of an article or during use. This arrangement is particularly important in situations where the pulley assembly itself cannot rotate relative to another tensioning element, fastener, or part of the upper, or where rotation is not easily controlled.

[0082] Figures 8 to 9 A series of schematic diagrams of some components of a dynamic tensioning system during operation are illustrated according to one embodiment. Figure 8, the pulley assembly 202 (only some components are visible for clarity) can be in a neutral position. In this position, the annular element 250 can be arranged at a first circumferential position 500, which is positioned to allow segments of the tensioning element 160 to pass straight from the pulley assembly 202 toward the attachment location on the article (not shown). Fig. 9 5 , force 510 is applied (e.g., by a shoelace or other element extending through the central hole of pulley assembly 202), and pulley assembly 202 can be pulled to a new position. Because ring element 250 can rotate, ring element 250 can move to second circumferential position 502, which also allows the segment of tensioning element 160 (which is now oriented in a new direction due to the adjusted position of pulley assembly 202) to pass straight from pulley assembly 202 toward the attachment location on the article.

[0083] To better understand Figures 8 to 9 The function of the structure shown in Fig.10 Another embodiment is depicted in FIG. Fig.10 , pulley assembly 550 includes an annular element 552 having a fixed circumferential position relative to a pulley disk of pulley assembly 550. Thus, when force 560 is applied to move pulley assembly 550, annular element 552 is unable to move to a different circumferential position and, therefore, may prevent tensioning element 570 from traveling along a straight path to a nearby attachment point. This may reduce the ability of the tensioning system to dynamically adjust the load on an item.

[0084] Embodiments may include a device to limit the compression or squeezing of pulley disks in a pulley assembly during use. In embodiments where the disks of a pulley assembly may tend to be squeezed together under the action of axial forces, such an arrangement may include additional structure to help reduce such squeezing. In some embodiments, an outer annular element (or outer annular element) may be used to counteract any axial forces at the periphery of the pulley assembly.

[0085] Fig.13 is a perspective view of an embodiment of a portion of a pulley assembly 802 and a tensioning element 800 . Fig.14 yes Fig.13 An exploded perspective view of the components shown in FIG.

[0086] Reference Fig.13, the pulley assembly 802 can be associated with a set of axial directions 890 (or simply axial directions 890), a set of radial directions 892 (or simply radial directions 892), and a set of circumferential directions 894 (circumferential directions 894). Thus, the axial directions 890 can correspond to the thickness of the pulley assembly 802, while the radial directions 892 are associated with the radius of the pulley assembly 802. The circumferential directions 894 are associated with the circumference of the pulley or the angular position around the pulley.

[0087] Reference Figure 13 to Figure 14 , the pulley assembly 802 includes a pair of discs and an outer annular element that helps prevent the tensioning element 800 from falling off the pulley assembly 802 during use. The pulley assembly 802 may include a first pulley member 810 and a second pulley member 830. The first pulley member 810 includes an outer side 811 and an inner side 812. The first pulley member 810 may also include a first disc 814 and a first central axial extension 816. As shown in Fig.12 As seen in FIG. 8 , the first central axial extension portion 816 extends from the inner side 812, while the outer side 811 has a generally flat surface (see FIG. Fig.13 ).

[0088] In different embodiments, the geometry of the first pulley member 810 can vary. The first disk 814 can have a generally round or circular shape. The first central axial extension 816 can have a cylindrical shape. In addition, the first central axial extension 816 can include a first central hole 817.

[0089] The second pulley member 830 includes an outer side 831 and an inner side 832. The second pulley member 830 may also include a second disk 834 and a second central axial extension 836. Fig.14 As seen in FIG. 8 , the second central axially extending portion 836 extends from the inner side 832 , while the outer side 831 has a substantially flat surface similar to the outer side 811 of the first pulley member 810 .

[0090] In different embodiments, the geometry of the second pulley member 830 can vary. The second disk 834 can have a generally round or circular shape. The second central axial extension 836 can have a cylindrical shape. In addition, the second central axial extension 836 can include a second central hole 837.

[0091] The pulley assembly 802 may also include an outer annular member 850, also referred to simply as the annular member 850. The annular member 850 includes an outer covering portion 852 and an inner retaining portion 854. The annular member 850 may also include an outer surface 860 and an inner surface 862.

[0092] In order to provide access for the tensioning element to enter the pulley assembly, the outer annular element may include one or more circumferential openings. Figure 13 to Figure 14 In the embodiment of the present invention, the ring element 850 can include a first circumferential opening 856 and a second circumferential opening 858. Both the first circumferential opening 856 and the second circumferential opening 858 can extend through the ring element 850 from the outer surface 860 to the inner surface 862.

[0093] Although Figure 13 to Figure 14 Embodiments include an outer annular element that forms a complete ring (that is, the ring is closed and has no ends), but other embodiments may use a partial outer annular element. In such embodiments, the partial annular element may not extend around the entire circumference of the pulley assembly, but may include a gap between the two ends of the partial ring. It can be appreciated that such a gap will have to be small enough so that the central axis of the pulley assembly cannot pass through the gap, thereby separating the pulley assembly and the partial outer annular element. In such embodiments, it may also be necessary to ensure that the annular element is rigid enough so that the central axis cannot be pushed through the gap.

[0094] In different embodiments, the cross-sectional geometry of the ring element 850 may vary. Some embodiments may utilize a round or circular cross-section. Figure 13 to Figure 14 In the embodiment shown in FIG, the ring element 850 has a T-shaped cross-sectional shape due to the configuration of the outer covering portion 852 and the inner retaining portion 854. In addition, the cross-sectional shape of the ring element 850 (taken through a plane perpendicular to the circumferential direction) is approximately constant along the length of the ring element 850.

[0095] Fig.15 Yes Fig.13 A cross-sectional view of the pulley assembly 802 is shown in FIG. Fig.15 , the first pulley member 810 can be permanently attached or coupled to the second pulley member 830. Specifically, the first central axial extension 816 of the first pulley member 810 can be inserted into the second central hole 837 of the second central axial extension 836 (see Fig.14). In some embodiments, the first central axial extension portion 816 and the second central axial extension portion 836 can be configured to snap fit together. Some other embodiments not shown may include additional flanges, protrusions, recesses or other arrangements to facilitate such a snap fit. In other embodiments, the first central axial extension portion 816 can be bonded to the second central axial extension portion 836. For example, the surface 840 of the first central axial extension portion 816 can be glued or otherwise bonded to the surface 842 of the second central axial extension portion 836. The assembly of the first pulley member 810 and the second pulley member 830 exposes and opens the first central hole 817 of the first central axial extension portion 816 so that another tensioning element (e.g., Fig.13 The tensioning element 800 shown in FIG. 800 may be inserted through the first central hole 817 .

[0096] At the same time, the first central axial extension portion 816 coupled to the second central axial extension portion 836 may include a central shaft 870 extending between the first disk 814 and the second disk 834. In addition, in the pulley assembly 802, the first disk 814, the second disk 834 and the central shaft 870 may be collectively referred to as a "pulley". It can be appreciated that in other embodiments, the pulley assembly may include a flat disk that is coupled to another member including a disk and an axis. In other words, in some other embodiments, only one pulley member may include an axially extending shaft, and the shaft may be directly coupled to the inner surface of the corresponding disk. In still other embodiments, each disk and the shaft extending therebetween may be formed as a single component by molding, three-dimensional printing, etc. Therefore, the central shaft of the pulley member does not need to include two or more different components (e.g., the first central axial extension portion and the second central axial extension portion), and may be a single integral part.

[0097] It can be further seen that the pulley assembly 802 includes a circumferential gap 900. The circumferential gap 900 is a gap that extends generally in a circumferential direction around the pulley assembly 802. Specifically, the circumferential gap 900 is at least partially open around the entire circumference. The circumferential gap 900 is bounded in opposite axial directions by the first disk 814 and the second disk 834. In a radial direction toward the center of the pulley assembly 802, the circumferential gap 900 is bounded by the surface 871 of the central shaft 870. The circumferential gap 900 can also be bounded in a radial direction (i.e., in a radial direction away from the center of the pulley assembly 802) by the annular element 850. As previously discussed, the first circumferential opening 856 and the second circumferential opening 858 can provide access to the circumferential gap 900 (see Fig.13 ).

[0098] The annular element 850 is mounted to the first pulley member 810 and the second pulley member 830 and is disposed adjacent to the circumferential gap 900. The outer covering portion 852 of the annular element 850 may surround and cover the circumferential gap 900. Fig.15 , the inner retaining portion 854 of the annular element 850 can be received within a portion of the circumferential gap 900. This configuration prevents any axial movement of the annular element 850 relative to the first pulley member 810 and the second pulley member 830. In addition, because the annular element 850 is closed (i.e., annular), the annular element 850 will not expand radially, so as long as a sufficiently rigid material is selected, thereby preventing the inner retaining portion 854 from escaping from the circumferential gap 900 in a radial direction. In some embodiments, the inner retaining portion 854 is not fixed or directly attached to the first pulley member 810 or the second pulley member 830, but can slide or translate around the circumferential gap 900 (in the circumferential direction).

[0099] like Fig.15 As seen in FIG. 8 , the tensioning element 800 may pass through one of the first circumferential opening 856 or the second circumferential opening 858 into the circumferential gap 900 (see FIG. 8 ). Fig.13 ). Inside the circumferential gap 900, the tensioning element 800 can be sized to fit into a section of the circumferential gap 900 and pass between the annular element 850 and the central shaft 870. Then, another portion of the tensioning element 800 (at Fig.15 856 or the second circumferential opening 858 may return from the circumferential gap 900 .

[0100] This exemplary configuration allows the tensioning element 800 to pass around the central axis 870 of the pulley assembly 802 to facilitate displacement of the tensioning element 800 about the pulley assembly 802. This configuration also ensures that the tensioning element 800 does not fall out of the circumferential gap 900 (i.e., fall off the pulley assembly) by using the annular element 850. Thus, this arrangement allows for a system in which the tensioning element does not become detached when slack is present in the system.

[0101] In various embodiments, the axial dimensions of a component or collection of components in a pulley assembly may vary. Fig.15 , the outer covering portion 852 of the annular element 850 has an axial thickness 910. In addition, the axial distance spanned between the outer side 811 of the first pulley member 810 and the outer side 831 of the second pulley member 830 is equal to the axial thickness 912. That is, the axial thickness of the pulley including the first disk 814, the second disk 834 and the central shaft 870 is equal to the axial thickness 912. Fig.15In the embodiment of , axial thickness 910 is approximately equal to axial thickness 912. In some other embodiments, the outer annular element can have an axial thickness greater than the axial thickness spanned by the outer surfaces of the two pulley members.

[0102] Fig.16 is a schematic diagram of an embodiment of a pulley assembly 802 and a tensioning element 800, which is intended to illustrate the general operation of the components. Fig.16 , the tensioning element 800 can enter and exit the first circumferential opening 856 and the second circumferential opening 858. In some cases, when the tensioning element 800 passes around the central axis 870, the first pulley member 810 and the second pulley member 830 (see Fig.15 ) can rotate slightly with the tensioning element 800 (e.g., due to a slight amount of friction between the tensioning element 800 and the central shaft 870). Fig.15 ) can slide through the circumferential gap 900, so the connection between the ring element 850 and the pulley member allows the ring element 850 to remain approximately stationary (i.e., rotationally stationary). This allows the circumferential opening in the ring element 850 to remain in place to receive the segments of the tensioning element 800.

[0103] This relative rotation between the annular element 850 and the pulley member also allows the orientation of the strands approaching the pulley assembly 802 to coincide with the Figures 8 to 9 The situation shown in FIG. 202 may be changed in a similar manner. For example, Fig.17 A configuration is shown in which the pulley assembly 802 has been pulled to a new position that requires the tensioning element segments to pass in a changed orientation in order to achieve the straightest path toward the anchor point (not shown). Fig.17 As seen in FIG. 8 , the annular element 850 rotates in a circumferential direction to allow the tensioning element segments to travel without any kinks. Fig.18 In the alternative embodiment depicted in , the outer annular element 990 is rotationally fixed relative to the pulley 992. This results in a situation where, when the force 998 acts to pull the assembly in a new direction, portions of the tensioning element 994 must be rotated out of the pulley 992 abruptly (due to the fixed orientation of the circumferential gap 996) before traveling toward the anchor point.

[0104] Fig.19 A schematic side view of an embodiment of a pulley assembly 802, a tensioning element 800, and a tensioning element 950 is illustrated. Fig.19 , the tensioning element 950 passes through a central hole in the pulley assembly 802, wherein the first segment 952 and the second segment 954 extend on opposite sides of the pulley assembly 802. Fig.19In the configuration of , the tensioning element 950 has been tensioned, and due to the spacing of the first segment 952 and the second segment 954 in the axial direction, this generates a radially directed force component 980 (along the length of the segment) as well as an axially directed force component 982. Fig.19 In the embodiment shown in , the outer cover portion 852 of the annular element 850 remains generally rigid and prevents the opposing sides of the pulley assembly 802 from being squeezed by the axially directed force component 982 .

[0105] Fig. 20 An alternative configuration without an outer (or inner) annular element is shown. Fig. 20 , the first disk 1000 and the second disk 1002 are connected by a central axis 1004. The tensioning element 1006 is wrapped around the central axis 1004, and the tensioning element 1008 passes through a hole in the central axis 1004. In this embodiment, applying tension along the tensioning element 1008 provides a radially directed component of force 1010 and an axially directed component of force 1012. However, unlike Fig.19 Compared to the implementation shown in Fig. 20 The configuration results in the tensioning element 1006 being compressed between the first disk 1000 and the second disk 1002. This may be due to the resilience of the components of the pulley and the tendency of the disks to pivot about the central axis 1004. The resulting compression may interfere with the movement of the tensioning element 1006, increase friction in the system, and may also increase the wear rate of the pulley elements.

[0106] In other embodiments, other structures for pulley assemblies having an outer annular element are also possible. For example, in one other embodiment, the pulley assembly can include an integral outer ring and pulley member (including a disc and a central axial extension).

[0107] Fig.21 1 is a schematic perspective view of another embodiment of an outer ring element 1100. For context, the outer ring element 1100 is shown as having opposing pulley members 1103, which together with the inner ring element 1100 form a pulley assembly 1101. The outer ring element 1100 may share a Figures 13 to 20 However, the outer ring element 1100 has not only two circumferential openings, but also includes a plurality of circumferential openings, including a first circumferential opening 1102, a second circumferential opening 1104, a third circumferential opening 1106, a fourth circumferential opening 1108, a fifth circumferential opening 1110, a sixth circumferential opening 1112, a seventh circumferential opening 1114, and an eighth circumferential opening 1116.

[0108] like Fig.21As seen in FIG, the circumferential openings are formed by the frame portion 1120, which traverse in alternating axial directions at regular intervals along the circumferential direction. Thus, relative to the outer annular element 1100, each circumferential opening is open (not defined) on one side as either the upper axial side or the lower axial side.

[0109] The use of an annular element with more than two circumferential openings can allow for a variety of arrangements of tensioning elements passing through the pulley assembly. For example, Fig. 22 is a schematic perspective view of an embodiment of a pulley assembly 1101 in which a tensioning element 1150 is inserted through the first circumferential opening 1102 and exits through the seventh circumferential opening 1114. As another example, Fig.23 1 is a schematic perspective view of an embodiment of a pulley assembly 1101, wherein a tensioning element 1150 passes through a third circumferential opening 1106 and a fifth circumferential opening 1110. Fig. 22 ) or can the ends of the tensioning element be brought closer together near the pulley assembly (as shown in Fig.23 ), different arrangements can be used for different tensioning arrangements.

[0110] Fig.24 A schematic diagram of an embodiment of an article of footwear 1200 , or simply article 1200 , including an upper 1202 and a sole structure 1204 , having a dynamic tensioning system 1206 is illustrated.

[0111] Embodiments may include various settings in the tensioning system, including various motorized or automated tensioning settings. Embodiments of the dynamic tensioning system 1206 may include any suitable tensioning system, including in combination with any of the systems disclosed in one or more of the following applications: U.S. Patent Application No. 2014 / 0068838, filed on August 20, 2013 by Beers et al. and entitled “Motorized Tensioning System,” now U.S. Application No. 14 / 014,491; U.S. Patent Application No. 2014 / 0070042, filed on August 20, 2013 by Beers and entitled “Motorized Tensioning System with Sensors,” now U.S. Application No. 14 / 014,555; and U.S. Patent Application No. 2013 / 09 / 2013 by Beers and entitled “Footwear Having Removable Motorized Adjustment The present invention relates to a U.S. patent application entitled "Automatic Lacing System" having publication number 2014 / 0082963 and current U.S. patent application number 14 / 032,524; these applications are hereby incorporated by reference in their entirety (collectively referred to herein as the "Automatic Lacing Case").

[0112] Article 1200 includes one or more tensioning cables 1210 for tightening the instep of article 1200, tensioning cables 1212 for applying tension across the side and heel regions of article 1200, and pulley assemblies 1220 for dynamically coupling tensioning cables 1210 and tensioning cables 1212. In addition, article 1200 includes a tensioning device 1230 that is configured to tighten the instep of article 1200. Fig.24 Some components of the tensioning device 1230 are schematically shown in the enlarged view of FIG.

[0113] In some embodiments, the tensioning device 1230 includes a motor 1232 and a spool 1234. In some embodiments, the motor 1232 may include an electric motor. However, in other embodiments, the motor 1232 may include any type of non-electric motor known in the art. Examples of different motors that may be used include, but are not limited to, DC motors (such as permanent magnet motors, brushed DC motors, brushless DC motors, switched reluctance motors, etc.), AC motors (such as motors with sliding rotors, synchronous electric motors, asynchronous electric motors, induction motors, etc.), universal motors, stepper motors, piezoelectric motors, and any other type of motor known in the art.

[0114] The motor 1232 can be coupled to the spool 1234 using a crankshaft. In some embodiments, other arrangements including gear systems can be used to transfer torque between the motor 1232 (or a crankshaft coupled to the motor 1232) and the spool 1234.

[0115] In some embodiments, a separate power source (not shown) may also be included. The power source may include a battery and / or a control unit (not shown) that is configured to power and control the motor 1232. The power source may be any suitable battery of one or more types of battery technology that may be used to power the motor 1232. A possible battery technology that may be used is a lithium polymer battery. The battery (or batteries) may be a rechargeable or replaceable unit that is packaged as a flat, cylindrical or coin shape. In addition, the battery may be a single unit or multiple units in series or in parallel. Other suitable batteries and / or power sources may be used to power the motor 1232.

[0116] First end 1214 of tensioning cable 1212 may be attached to spool 1234 so that tensioning cable 1212 may be wound (or unwound) around spool 1234 to change the tension on article 1200. In some cases, a second end (not shown) of tensioning cable 1212 may be secured to a portion of upper 1202, such as a heel. Fig.25As shown in FIG. 1 , when tensioning cable 1212 is wound onto spool 1234 (via motor 1232 ), pulley assembly 1220 can move across the surface of upper 1202 as tensioning cable 1210 and the load on tensioning cable 1212 are dynamically adjusted.

[0117] like Figure 24 to Figure 25 As seen in , when a force is applied by one or more tensioning elements, the pulley assembly can be configured to move to different positions on the upper. Since the position of the pulley assembly can change in response to changes in the load in the tensioning system, this can allow for a more dynamic balance of the load on the tensioning system.

[0118] The pulley assemblies may be used to reduce friction in tensioning elements (eg, cables, laces, etc.) In some embodiments, one or more pulley assemblies may be used in place of eyelets on an article of footwear.

[0119] Fig.26 is a schematic diagram of an embodiment of an article of footwear 1300 , or simply article 1300 . Fig. 27 It is item 1300 and Fig.26 A schematic diagram of the side opposite to the side shown in FIG. Figure 26 to Figure 27 , article 1300 includes a fastening system 1302 that can be used to tighten a throat 1301 of article 1300. Fastening system 1302 may include a plurality of pulley assemblies 1310. Figure 26 to Figure 27 In the embodiment, as described in detail above and Figures 13 to 15 As shown in , each pulley assembly is shown as a pulley having an outer annular element. However, in other embodiments, such as Figures 2 to 4 As shown in , one or more of the pulley assemblies may be replaced with a pulley assembly that includes an internal annular element.

[0120] Tensioning cable 1330 may be wound around each pulley of plurality of pulley assemblies 1310. In some embodiments, the end of tensioning cable 1330 may be routed through article 1300 to spool 1360. Winding tensioning cable 1330 will then be used to tighten throat 1301 around the foot. However, using a pulley assembly for routing the laces may provide significantly less friction along the path of the laces and provide more consistent tensioning of article 1300 compared to conventional lacing systems.

[0121] like Fig.26 and Fig. 27As seen in the figure, the pulley assembly can be coupled to the article in various ways. As an example, the pulley assembly 1340 can be coupled using a cable loop 1342 that passes through a hole 1344 of the pulley assembly 1340. The cable loop 1342 can be sewn directly to the article 1300 (e.g., the upper) at its end. Alternatively, as another example, the pulley assembly 1350 can be mounted directly to the post 1352, which itself is fixed to the article 1300. In still other embodiments, the pulley assembly can be glued directly to the upper of the article.

[0122] Fig. 27 Also shown is an example of using a pulley assembly 1400 having an inner ring instead of an outer ring. Thus, it can be appreciated that pulley assemblies having either an outer ring element or an inner ring element can be used, as well as various combinations of these types.

[0123] In different embodiments, different tensioning elements in the tensioning system can have different material properties. In some embodiments, the tensioning element extending around the pulley shaft can have a lower elastic modulus than the tensioning element extending through the central hole of the pulley shaft. In other embodiments, the tensioning element extending around the pulley shaft can have a higher elastic modulus than the tensioning element extending through the central hole of the pulley shaft. In still other embodiments, two or more tensioning elements can have equal elastic moduli.

[0124] Although various embodiments have been described, the description is intended to be exemplary rather than restrictive, and it will be apparent to those of ordinary skill in the art that many more embodiments and embodiments within the scope of the embodiments are possible. Any feature in any embodiment may be used in combination with or in place of any other feature or element in any other embodiment, unless specifically limited. Therefore, the embodiments are not limited except in accordance with the appended claims and their equivalents. Moreover, various changes and variations may be made within the scope of the appended claims.

Claims

1. A tensioning system for an article of footwear, the tensioning system comprising: a pulley including a first disk, a second disk, and a central shaft extending between the first disk and the second disk; wherein a hole extends through said central axis; a first tensioning member having a portion extending about the central axis; and a second tensioning member having a portion extending through the aperture; wherein the pulley comprises a circumferential gap arranged between the first disk and the second disk, the circumferential gap being delimited in a radial direction by the central axis, and the circumferential gap being delimited in a first axial direction by the first disk and in a second axial direction by the second disk; Wherein, the tensioning system further comprises a partial annular element arranged in the circumferential gap; wherein the first disk-shaped member includes a lip on an outer periphery of the first disk-shaped member; wherein the partial annular element is arranged between the lip and the central shaft; wherein the partial annular element is movable in the circumferential direction through the circumferential gap; wherein a portion of the first tensioning member extending around the central axis is disposed between the central axis and the partial annular element; Wherein, the first tensioning member is displaceable around the central axis.

2. A tensioning system for an article of footwear, the tensioning system comprising: a pulley including a first disk, a second disk, and a central shaft extending between the first disk and the second disk; wherein a hole extends through said central axis; a first tensioning member having a portion extending about the central axis; and a second tensioning member having a portion extending through the aperture; wherein the pulley comprises a circumferential gap arranged between the first disk and the second disk, the circumferential gap being delimited in a radial direction by the central axis, and the circumferential gap being delimited in a first axial direction by the first disk and in a second axial direction by the second disk; Wherein, the tensioning system further comprises a partial annular element arranged in the circumferential gap; wherein the first disk-shaped member includes a lip on an outer periphery of the first disk-shaped member; wherein the partial annular element is arranged between the lip and the central shaft; wherein the partial annular element is movable in the circumferential direction through the circumferential gap; wherein a portion of the first tensioning member extending around the central axis is disposed between the central axis and the partial annular element; Wherein, the second tensioning member is displaceable through the hole.

3. A tensioning system for an article of footwear, the tensioning system comprising: a pulley including a first disk, a second disk, and a central shaft extending between the first disk and the second disk; wherein a hole extends through said central axis; a first tensioning member having a portion extending about the central axis; and a second tensioning member having a portion extending through the aperture; wherein the pulley comprises a circumferential gap arranged between the first disk and the second disk, the circumferential gap being delimited in a radial direction by the central axis, and the circumferential gap being delimited in a first axial direction by the first disk and in a second axial direction by the second disk; wherein the tensioning system further comprises an outer annular element, the outer annular element comprising a first circumferential opening and a second circumferential opening; wherein the pulley is mounted within the outer annular element, and wherein the outer annular element is arranged adjacent to the circumferential gap; wherein the first tensioning member enters the circumferential gap through the first circumferential opening, extends around the central axis, and exits the circumferential gap through the second circumferential opening; and Wherein, a portion of the first tensioning member extending around the central axis is arranged between the central axis and the outer annular element.

4. The tensioning system according to claim 3, wherein: The first tensioning member is displaceable about the central axis.

5. The tensioning system according to claim 3, wherein: The second tensioning member is displaceable through the aperture.

6. A tensioning system for an article of footwear, the tensioning system comprising: The pulley further comprises: a first disk-shaped member and a second disk-shaped member; a central axis extending between the first disk-shaped member and the second disk-shaped member; a circumferential gap arranged between the first disk-shaped member and the second disk-shaped member and delimited in radial direction by the central axis; wherein the pulley includes a hole extending through the central shaft; an outer annular element, the outer annular element further comprising at least two circumferential openings; wherein the pulley is fixed to the outer annular element so that the outer annular element partially covers the circumferential gap; a first tensioning element including a portion disposed between the central shaft and the outer annular element; and A second tensioning element extends through the aperture in the central shaft.

7. The tensioning system according to claim 6, wherein: The outer annular element has an axial thickness greater than or equal to an axial thickness of the pulley.

8. The tensioning system according to claim 6, wherein: The first tensioning element enters the circumferential gap through a first circumferential opening in the outer annular element, and wherein the first tensioning element exits the circumferential gap through a second circumferential opening in the outer annular element.

9. The tensioning system according to claim 6, wherein: The pulley is rotatable independently of the outer annular element.

10. The tensioning system according to claim 6, wherein: The outer annular member includes an outer covering portion and a retaining portion extending inwardly toward the center from the outer covering portion.

11. The tensioning system according to claim 10, wherein: The retaining portion fits into the circumferential gap so that the outer annular element remains fixed to the pulley.

12. The tensioning system of claim 6, wherein: The outer annular element comprises at least three circumferential openings.

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