The present invention relates to footwear, and more particularly to footwear having an upper and a lacing system.
Conventional articles of footwear include an upper and a sole secured to a lower surface of the upper. The upper provides a void that receives a person's foot and positions the foot with respect to the sole. The sole may provide traction or cushion for the foot under a variety of conditions, e.g., walking, running or standing, or a combination thereof, and commonly includes a midsole and an outsole. A footbed or insole typically is disposed in the interior of the upper for additional cushion.
Some articles of footwear include a lacing system to provide a snug and comfortable fit of the upper around the wearer's foot. The lacing system secures the wearer's foot so that parts of the footwear are pulled inward, with a lace over the instep, against the lateral and medial sides of the wearer's foot in the arch region. A lacing system can be limited based on the size of the upper in relation to the wearer's foot. It also can be difficult to accommodate a multitude of possible variations of foot sizes with a single type of lacing system. Further, due to excessive forces generated by tension in laces of a lacing system, the components of the lacing system can stretch and/or move, or can become uncomfortably tight over a wearer's foot. Over time, parts of the lacing system can stretch or deteriorate, and in some cases detach from the sole or upper, so that even when the lacing system is tightened, the upper does not thoroughly secure around the wearer's foot.
Accordingly, there remains room for improvement to lacing systems in the field of footwear.
An article of footwear is provided with a lacing system configured to secure the footwear to the wearer's foot and to distribute tension across a wide area of the upper, which helps prevent stretching, ripping and/or excessive tension in parts of the footwear, and which provides a robust construction having a secure fit around the wearer's foot.
In one embodiment, an article of footwear includes an upper that defines a foot void configured to receive a wearer's foot. The upper includes an exterior surface having a lateral side and a medial side, and a lacing cord on the exterior surface of the upper, the lacing cord extending back and forth on the upper to define at least one V-shaped lower turn fixedly attached to the exterior surface of the upper by embroidery stitching, the embroidery stitching including stiches crossing over and under and the lacing cord and at least one V-shaped upper turn, the V-shaped upper turn having an upper end forming a loop that is free from attachment to the upper, wherein the V-shaped lower turn includes a first portion disposed on a first point of the upper, a second portion disposed on a second point of the upper, the second point spaced form the first point, and the embroidering stitching extends along the length of the lacing cord between the first and second points.
In still another embodiment, the lacing cord can be reinforced with additional stitching on the upper.
In yet another embodiment, the upper can include a knitted layer and a liner layer disposed inwardly of the knitted layer. The lacing cord can be embroidered to the knitted layer using embroidery thread. The liner can cover the embroidery thread on an inner surface of knitted layer.
In even another embodiment, the upper can include a knitted layer having regions of different elasticity and/or air permeability. The lacing cord can be embroidered to region of lower elasticity and/or air permeability. The lacing cord can be embroidered to a region of higher elasticity and/or air permeability, or across different regions.
In still a further embodiment, the footwear upper can include an exterior surface having a lateral side and a medial side, and a lacing system including a primary lace support connected to the upper and having primary loops disposed on the lateral and medial sides of the exterior surface of the upper. The primary lace support can include a primary lacing cord having a first segment embroidered to the upper, a second segment embroidered to the upper, and a third segment free from attachment to the upper between the first and second segments. The third segment can form one of the primary loops.
The current embodiments described herein can provide an article of footwear having an exceptional fit and finish that were not previously achievable. With the primary and secondary lace support systems, and the optional lace, the footwear upper can provide an exceptionally dynamic fit to a wearer's foot. Where the primary lace support is embroidered to the upper over a lateral and/or medial panel, that support can distribute forces in an efficient manner Where the upper is knitted, the distribution of forces over the lateral and/or medial panels can be preselected and fine-tuned to provide exceptional fit without feeling overtightened on the wearer's foot. The forces can also be distributed such that the upper panels are not put under excessive tension so that they are not damaged or torn due to forces transmitted through the support systems to secure the upper to a wearer's foot.
These and other objects, advantages and features of the invention will be more readily understood and appreciated by reference to the detailed description of the preferred embodiments and the drawings.
Before the embodiments of the invention are explained in detail, it is to be understood that the invention is not limited to the details of operation or to the details of construction and the arrangement of the components set forth in the following description or illustrated in the drawings. The invention may be implemented in various other embodiments and of being practiced or being carried out in alternative ways not expressly disclosed herein. Also, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting. The use of “including” and “comprising” and variations thereof is meant to encompass the items listed thereafter and equivalents thereof as well as additional items and equivalents thereof. Further, enumeration may be used in the description of various embodiments. Unless otherwise expressly stated, the use of enumeration should not be construed as limiting the invention to any specific order or number of components. Nor should the use of enumeration be construed as excluding from the scope of the invention any additional steps or components that might be combined with or into the enumerated steps or components.
A current embodiment of the footwear is illustrated in
Although the current embodiments are illustrated in the context of a running shoe, they may be incorporated into any type or style of footwear, including hiking shoes, trail shoes and boots, hiking boots, work boots, all-terrain shoes, barefoot running shoes, athletic shoes, performance shoes, sneakers, conventional tennis shoes, walking shoes, multisport footwear, casual shoes, dress shoes or any other type of footwear or footwear components. It also should be noted that directional terms, such as “vertical,” “horizontal,” “top,” “bottom,” “upper,” “lower,” “inner,” “inwardly,” “outer” and “outwardly,” are used to assist in describing the invention based on the orientation of the embodiments shown in the illustrations.
Further, the terms “medial,” “lateral” and “longitudinal” are used in the manner commonly used in connection with footwear. For example, when used in referring to a side of the shoe, the term “medial” refers to the inward side (that is, the side facing footwear on the wearer's other foot) and “lateral” refers to the outward side. When used in referring to a direction, the term “longitudinal direction” refers to a direction generally extending along the length of the footwear between toe and heel, and the term “lateral direction” refers to a direction generally extending across the width of the footwear between the medial and lateral sides of the footwear. The use of directional terms should not be interpreted to limit the invention to any specific orientation. Further, as used herein, the term “arch region” (or arch or midfoot) refers generally to the portion of the footwear corresponding to the arch or midfoot of the wearer's foot; the term “forefoot region” (or forefoot) refers generally to the portion of the footwear forward of the arch region corresponding to the forefoot (for example, including the ball and the toes) of a wearer's foot; and the term “heel region” (or heel) refers generally to that portion of the footwear rearward of the arch region corresponding to the heel of the wearer's foot. The forefoot region 11, arch or mid-foot region 12, and heel region 13 generally are identified in
The footwear 10 includes a foot void 14, defined by the upper 20 and sole 40, configured to securely and comfortably hold a human foot. The foot is received through a foot opening 15 defined by the upper 20. A footbed (not shown) can be positioned within the void 14 defined by the upper.
The sole 40 can include one or more different components, such as an outsole 41 configured to include a ground contacting surface which itself may include multiple treads, lugs, spikes, cleats and/or other features designed to enhance traction between the footwear 10 and in underlying surface. Other components such as a midsole and/or a topsole (not shown) can be included. The components of the sole 40 can individually and/or collectively provide the article of footwear 10 with a number of attributes, such as support, rigidity, flexibility, stability, cushioning, comfort, reduced weight, and/or other attributes. Generally, regardless of which components are present, the sole 40 can form the bottommost portion of the footwear 10.
The sole 40 may be joined to the upper 20 using essentially any type of footwear construction, such as a cemented construction, a direct-attach construction (e.g. direct injection molding), a Strobel-stitched construction, a stitchdown construction, a McKay stitch construction, a California construction, a force-lasted construction, a slip-lasted construction, a moccasin construction, a direct vulcanizing construction or a welted construction (e.g. Goodyear welt or Blake welt). The upper 20 may be configured to implement the desired footwear construction. For example, the bottom of the upper 20 may be closed with a Strobel-board to implement a Strobel-stitched construction or with an insole board to implement a direct-attached or welted construction. The joining of the sole 40 and the upper 20 can be accomplished using adhesives, cement, injection molding, pour molding or any other technique used to join an upper and sole.
The upper 20 can be formed from one or more material elements joined together to cover at least a portion of the wearer's foot. The upper 20 can be manufactured from nylon, natural or synthetic leather, canvas, cotton, non-woven fabric, plastic sheets, or other suitable materials. The material elements can be selected based on the intended uses of the article of footwear 10. In some embodiments, the upper 20 can be manufactured from any material upon which the lace supports 50, 60 can be embroidered or stitched in place.
In one embodiment, the upper 20 can be in the form of a knitted upper, constructed for example by weaving or knitting techniques, such as circular knitting, flat knitting, raschel knitting, Jacquard knitting or other types of knitting. Optionally, the upper 20 can be knitted with two or more different knit patterns. Certain knit patterns can be disposed in certain regions to impart various physical attributes, such as breathability, rigidity, support, elasticity, and/or to mimic a heel counter, toe guard, or other component. With regard to knit patterns, the strands forming the knitted textile of the upper 20 may have one type of knit pattern in one area and another type of knit pattern in another area. Depending upon the types and combinations of knit patterns utilized, areas of the knitted textile can have a plain knit structure, a mesh knit structure, a rib knit structure, and various combinations thereof, for example. Different types of knit patterns can be incorporated into specific locations of the upper 20 to modify the physical properties or aesthetics of the upper 20, such as elasticity, air permeability, stiffness, and abrasion-resistance.
Optionally, the upper 20 can have one type of yarn formed from multiple strands, optionally twisted together, in one area and another type of yarn in another area. The upper 20 also can incorporate yarns with different deniers, materials (e.g., cotton, elastane, polyester, rayon, wool, nylon and mixtures thereof), and degrees of twist. The different types of yarns can affect the physical properties of the upper 20, including aesthetics, stretch, thickness, air permeability, and abrasion-resistance. By varying and/or combining various types and combinations of knit patterns and yarns, each area of the upper 20 may have specific properties that enhance the comfort, durability, and performance of the footwear 10.
Referring to
The various pieces of the upper 20 may be manufactured from any combination of pieces of a wide range of materials, such as leather, synthetic leather, mesh, canvas, textile (e.g. woven, knit, bonded), fabric and molded components. In the embodiment illustrated herein, the vamp 24, lateral panel 25, medial panel 26, and heel panel 27 are contiguous and form a unitary knitted textile, and is formed as a one-piece element through a knitting process. That is, the knitting process substantially forms the various shapes and structures of the vamp 24, lateral panel 25, medial panel 26, and heel panel 27 without the need for significant additional manufacturing steps or processes. Portions and edges of the knitted textile may be joined to each other (e.g., a seam may join portions of the knitted textile forming the heel panel 27) following the knitting process.
The instep panel 28 can be formed from a separate textile piece, and is sewn otherwise joined to the vamp 24, lateral panel 25, and medial panel 26 along a seam 29. In other embodiments, the instep panel 28 can be formed as a unitary knitted textile with the other panels. In yet other embodiments, the upper 20 can be a multi-piece upper with the vamp 24, lateral panel 25, medial panel 26, heel panel 27, and instep panel 28 sewn or otherwise joined together.
A variety of additional elements may be incorporated into the upper 20. For example, the upper 20 may include various trim, cushioning and reinforcing elements, such as, but not limited to, a binding collar topline providing a finished edge to the foot opening 15, a toe bumper (not shown) provided to reinforce the vamp 24, a heel counter (not shown) be fitted into the heel region to reinforce the heel panel 27 and increase support, and/or one or more logos, trademarks, and/or placards with care instructions and material information. Accordingly, the upper 20 may incorporate a variety of other features and elements, in addition to the features and elements discussed herein and shown in the figures.
As shown in
The lace 70 can be continuous and optionally can be in the form of a strand, a cable, a solid core wire, a solid core polymer, a multi-filament layer or polymer, which can be braided, woven, twisted or otherwise configured, a strap, a cord, a filament and combinations of any of the foregoing. The lace 70 can be combined with others laces or strands. Some laces can include wire and/or a synthetic material such as nylon, rayon, polyester and/or a polyacrylic compound.
As best shown in
In the embodiment illustrated in the figures, the primary and secondary lace supports 50, 60 are formed by lacing cords 52, 62, respectively. The material and/or shape for the lacing cord 52 forming the primary lace support 50 may be the same as or different from the material and/or shape for the lacing cord 62 forming the secondary lace support 60. In one example, the lacing cords 52, 62 are both braided nylon cords.
The primary and secondary lace supports 50, 60 can include portions that are attached directly to the exterior surface 21 of the upper 20. The loops 51, 61 extend from the exterior surface 21 of the upper 20, and are free from attachment to the upper 20, i.e. the surfaces of the loops 51, 61 are separated by a gap from the exterior surface 21, and can bend and flex to accommodate the lace 70 and the desired fit of the upper 20 on the wearer's foot.
The lace 70 can interlock the secondary lace support 60 with the primary lace support 50, and can prevent the secondary loops 61 from accidentally unlooping by hindering the secondary lacing cord 62 from withdrawing completely from the primary loops 51. When the lace 70 is tightened and tied, the tension on the interlocked lacing cords 52, 62 is increased and the secondary lacing cord 62 cannot withdraw from the primary loops 51.
The primary lacing cord 52 includes a plurality of looped sections 53 forming the primary loops 51. Each of the looped sections 53 includes a length or segment of the primary lacing cord 52 extending from the exterior 21 of the upper 20 at each end thereof, with a bend between the attached ends forming a terminal end 54 of the loop 51. Each looped section 53 can be routed away from the exterior 21, bent at the terminal end 54 and routed back toward the exterior 21, with the ends thereof secured on the exterior 21, e.g., via embroidery using thread 56, stitching, adhesive, etc., as described in further detail below, to form the primary loop 51 and defines an opening 55 operable to permit passage of the secondary loops 61 therethrough.
One of the primary loops 51 can be bordered by segments of the primary lacing cord 52 attached to the upper 20. For example, the primary loop 51 can be formed by a first segment 52A of the primary lacing cord 52 attached to the upper 20 and a second segment 52B of the primary lacing cord 52 attached to the upper 20, with the looped section 53 forming a third segment free from attachment to the upper 20 between the first and second segments 52A, 52B. As detailed below, in one embodiment, the first and second segments 52A, 52B can be embroidered to the upper 20 using thread 56.
The secondary lacing cord 62 includes a plurality of looped sections 63 forming the secondary loops 61. Each of the looped sections 63 includes a length or segment of the secondary lacing cord 62 extending from the exterior 21 of the upper 20, such as from the instep panel 28 at each end thereof, with a bend between the attached ends forming a terminal end 64 of the loop 61. Each looped section 53 can be routed away from the exterior 21, bent at the terminal end 64 and routed back toward the exterior 21, with the ends thereof secured on the exterior 21, e.g., via embroidery using thread 66, stitching, adhesive, etc., as described in further detail below, to form a looped section 63 which can be passed through one of the primary loops 51 to define the secondary loop 61 at its terminal end 64. Each secondary loop 61 defines an opening 65 operable to permit passage of the lace 70 through the secondary loop 61.
One of the secondary loop 61 can be bordered by segments of the secondary lacing cord 62 attached to the upper 20. For example, as shown in
In one embodiment, the secondary lacing cord 62 is interlocked with the primary lacing cord 52 by the lace 70, as depicted in
The secondary loops 61 can be slidably adjustable within the primary loops 51 to adjust the fit of the article of footwear 10 to the wearer's foot. In
Referring to
The primary lacing cord 52 has a first end 52F and a second end 52S, and the lacing cord 52 can be continuous or discontinuous, i.e. formed from one or more segments of lacing cord, between the first and second ends 52F, 52S. In the embodiment shown herein, the primary lacing cord 52 includes an elongated lateral segment 52L extending over the lateral side 22 of the upper 20 and defining the primary loops 51 thereon, and an elongated medial segment 52M extending over the medial side 23 of the upper 20 and defining the primary loops 51 thereon. Referring additionally to
The primary loops 51 can be attached at the lateral side 22 and medial side 23 of the exterior surface 21, and extend free of the upper 20 toward the center of the footwear 10 or the instep panel 28. A set of primary loops 51 can be disposed on both the lateral side 22 and medial side 23 of the exterior surface 21 of the upper 20, with the lateral segment 52L of the lacing cord 52 forming a lateral set of primary loops 51 and the medial segment 52M of the lacing cord 52 forming a medial set of primary loops 51.
The first and second ends 52F, 52S of the primary lacing cord 52 can be attached to the upper 20 or sole 40 of the footwear 10 using any suitable attachment method, including, but not limited to, embroidery, stitching, adhesive, welding, fusing, or any combination thereof. In the embodiment shown in
The secondary lacing cord 62 includes an elongated lateral segment 62L defining the secondary loops 61 on the lateral side 22 of the upper 20 and an elongated medial segment 62M defining the secondary loops 61 on the medial side 23 of the upper 20. The secondary lacing cord 62 can include a first end 62F and a second end 62S, the first end 62F secured to a first connection point 67 disposed adjacent the forward edge 28F of the instep panel 28 and the second end secured 62S to a second connection point 68 disposed adjacent the rearward edge 28R of the instep panel 28. The secondary lacing cord 62 can be provided as a continuous loop around the upper 20 between the first and second ends 62F, 62S, with the first and second ends 62F, 62S formed as elongated segments of lacing cord 62 which extend laterally and medially from the connection points 67, 68 to join the lateral and segments 62L, 62M. The connection points 67, 68 can be centered on the instep panel 28 and spaced longitudinally or lengthwise on the upper 20.
The secondary loops 61 can be attached at the instep panel 28 and extend free of the upper 20 toward one of the lateral or medial sides 22, 23 of the upper 20. The secondary loops 61 are formed by inserting a portion of the lacing cord 62 through one of the primary loops 51, for example as described above with respect to
In the illustrated embodiment, the secondary lace support 60 is attached to the instep panel 28. Optionally, the secondary lace support 60 can be attached to a tongue of the instep panel 28 that provides cushioning and support across the instep of the foot.
Referring to
As illustrated, the secondary loops 61 of the secondary lacing cord 62 are linearly spaced, being generally aligned in rows extending in the longitudinal or lengthwise direction of the upper 20. Further, as depicted in the drawings, the looped sections 63 formed on the lateral side 22 extend laterally across the lateral edge 28L of the instep panel 28, toward their respective terminal ends 64. The looped sections 63 formed on the medial side of the instep panel 28 extend medially across the medial edge 28M of the instep panel 28, toward their respective terminal ends 64. When threaded through the primary loops 51, the looped sections 63 turn back toward the center of the instep panel 28, and may optionally re-cross the lateral or medial edge 28L, 28M of the instep panel 28.
Referring to the embodiment shown in
In some embodiments, the lacing cord 52, 62 can be attached to the upper 20 by applying embroidery stitches along a length or segment of the lacing cord 52, 62, or at discrete locations along the lacing cord 52, 62, such as at two spaced locations along the length of the cord. For example, embroidery stitches can be applied along segments 52A, 52B of the primary lacing cord 52 using thread 56. Embroidery stitches can be applied along segments 62A, 62B of the secondary lacing cord 52 using thread 66. The embroidery stitches may secure the lacing cord 52, 62 to one or more layers of the upper 20, and adjacent the exterior surface 21 of the upper 20 to be visible to the wearer. The thread 56, 66 can be routed through one or more layers of the upper 20 to embroider the lacing cord 52, 62 to the upper 20.
As used herein, the embroidery thread 56, 66 can include various threads, yarns, or other strands of material, including single fiber, monofilament, or multi-filament threads. Some non-limiting examples of materials for the thread 56, 66 used for embroidering the lacing cords 52, 62 to the upper 20 can include polymer materials such nylon, polyester, polyacrylic, polypropylene, polyethylene, metal, silk, cellulosic fibers (e.g., cotton), elastomers, and any combination, composite, or blend thereof. The thread 56, 66 forming the embroidery stitches for the first and second lacing cords 52, 62 may be formed of the same or different materials.
The stitch technique for embroidering the lacing cords 52, 62 to the upper 20 can vary. In some non-limiting examples, the stitch technique used can include chain stitch, double chain stitch, the buttonhole or blanket stitch, the running stitch, the satin stitch, the cross stitch, or any other conventional stitch technique. A combination of known stitch techniques can be used.
In one method of attaching the lacing cord 52, 62 to the upper 20, the lacing cord 52, 62 can be laid onto the exterior surface 21 of the upper 20, and embroidered or stitched in place using thread 56, 66. Optionally, the exterior surface 21 of the upper 20 is formed as the exterior surface of a flat-knitted textile, which can conveniently be laid flat during embroidery. In an exemplary embodiment, an embroidery machine can be used to stitch thread 56, 66 using a needle that routes thread 56, 66 through openings in the knitted textile, or directly through yarn or strands of the material, or other material, such as polymer sheets, weaves, fabrics, leather panels or other panels forming the upper 20. In other embodiments, the needle can pierce the upper 20 to create its own opening in the upper 20 and stitches thread 56, 66 through the resulting holes. In either case, the thread 56, 66 can extends over at least a portion of the lacing cord 52, 62 between two openings in the upper 20 to attach the lacing cord 52, 62 to the exterior surface 21 of the upper 20. By extending over at least a portion of the lacing cord 56, 62, the thread 56, 66 can extend over an outer surface of the lacing cord 52, 62 as shown herein. As another option, the thread 56, 66 can extend through the lacing cord 56, 62 to extend over a portion of the lacing cord 52, 62 closest to the exterior surface 21 of the upper 20. In the latter case, the thread 56, 62 can penetrate an outer surface of the lacing cord 52, 62 and emerges at another location on the lacing cord 52, 62.
After the cords 52, 62 are embroidered or stitched in place using thread 56, 66, the outer surface of the cord 52, 62 can engage against the exterior surface 21 of the upper 20, but is non-slidable and substantially immovable relative to the exterior surface 21 where the embroidery thread 56, 66 goes over or through the cords 52, 62.
The lacing cords 52, 62 can be both functional and decorative. For example, in addition to forming the loops 51, 61 for the lacing system 30, the lacing cords 52, 62 can be embroidered in various decorative patterns on the upper 20, including letters, numbers, symbols, other characters, or any combination thereof.
In the illustrated embodiment, the primary lacing cord 52 and secondary lacing cords 62 can extend in zigzag, sinuous, serpentine, or otherwise alternating patterns over the upper 20. For example, the primary lacing cord 52 can have portions extending in a zigzag or back-and-forth manner between upper and lower ends of the lateral and medial panels 25, 26 of the upper 20 to order to define the terminal ends 54 of the primary loops 51 at the upper end or turn. At the lower end or turn, the primary lacing cord 52 can define a lower end 57 distal from the terminal end 54 of the loop 51.
The second segment 52B associated with one loop 51 can be joined to or continuous with the first segment 52A associated with an adjacent loop 51. The lacing cord 52 can transition from one segment 52B to the other segment 52A at the lower end 57. The lacing cord 52 can be continuously embroidered between these segments, including over the transition between the segments 52B, 52A and the lower end 57.
The exemplary embodiment uses triangular loops 51 formed by elongated segments 52A, 52B of embroidered lacing cord 52 to help transfer tension across a larger area of the upper 20. As seen in
The secondary lacing cord 62 can have portions extending in a zigzag or back-and-forth manner across the upper 20, such as across the instep panel 28, to order to define the terminal ends 64 of the looped segments 63 at the outer end or turn. At the inner end or turn, the secondary lacking cord 62 can define an upper end 69 distal from the looped segments 63.
The second segment 62B associated with one loop 61 can be joined to or continuous with the first segment 62A associated with an adjacent loop 61. The lacing cord 62 can transition from one segment 52B to the other segment 62A at the upper end 69. The lacing cord 62 can be continuously embroidered between these segments, including over the transition between the segments 62B, 62A and the upper end 69.
The exemplary embodiment uses elongated triangular loops 61 formed by segments 62A, 62B of embroidered lacing cord 62 to help transfer tension across a larger area of the upper 20. As seen in
Referring to
Some non-limiting examples of different physical attributes for the different regions include breathability or air permeability, rigidity or stiffness, support, elasticity, and/or abrasion-resistance. In some embodiments, the first region 80 can be stiffer or more stretch resistant than the second or third regions 81, 82. In one example, the first region 80 can be more stretch resistant such that first region 80 provides support for the primary lacing cord 52. The second the third regions 81, 82 can be less stiff or can stretch readily to allow upper 20 to comfortably conform to the wearer's foot.
The varying physical attributes of each region can be achieved in various ways, including knit pattern or yarn type. As described above, certain knit patterns can be disposed in certain regions to impart different physical attributes to different regions of the upper 20. In some embodiments, the first region 80 can have a different knit pattern than the second or third regions 81, 82. In one example, the first region 80 can have a denser knit, such as a Jacquard knit with a higher gauge, and the second and third regions 81, 82 can have a looser knit, such as a Jacquard knit with lower gauge. The looser or more open knit pattern in the second and third regions 81, 82 increase breathability of the upper in these regions. The denser knit pattern in the first region 80 provides support for the primary lacing cord 52.
The more elastic and/or breathable second and third regions 81, 82 can be disposed between the tighter knit first region 80 to which the lacing cords 52, 62 are embroidered. Optionally, the first region 80 can surround, or substantially surround, the second and third regions 81, 82. The second and third regions 81, 82 can have any desired shape, and may depend on the configuration of the lace supports. As shown in the illustrated embodiments, the second region 81 can be triangular, and substantially located between two embroidered segments 52A, 52B of the primary lacing cord 52. The third region 82 can be triangular and inverted with respect to the second region 81. The third region 82 can be located between two of the primary loops 51, with one end confronting or adjacent to the seam 29. The third region 82 can be smaller than the second region 81.
A boundary 83 between the regions, indicated by a dashed line in
Additional regions having one or more different physical attributes can also be provided. For example, as shown in
In some embodiments, one or more of the loops 51, 61 may be reinforced by additional embroidery stitches using thread. Referring to
The exemplary embodiment uses an elongated segment of reinforcement stitches 85, 86 across two locations on the lacing cord 52, 62 adjacent to the loops 51, 52 to reinforce the embroidered attachment. The reinforcement stitches 85, 86 may secure the lacing cord 52, 62 to one or more layers of the upper 20, and adjacent the exterior surface 21 of the upper 20 to be visible to the wearer.
As seen in
The stitch technique for reinforcing the loops 51, 61 can vary. In some non-limiting examples, the stitch technique used can include lockstitch, chain stitch, double chain stitch, the buttonhole or blanket stitch, the running stitch, the satin stitch, the cross stitch, or any other conventional stitch technique. A combination of known stitch techniques can be used.
The attachment of the secondary lacing cord 62 can be reinforced at the connection points 67, 68 by applying reinforcement stitches 87, 88. Other reinforcement locations are possible. The reinforcement stitches 85-88 can include rows of stands passing over the lacing cord 52, 62, through the upper material to cross to the inner surface of the upper 20 and crossing over the opposite side of the lacing cord 52, 62. The rows of stands can form a straight line. In other embodiments, the reinforcement stitches 85 can form other patterns, such as a curve, chevron, or other geometric shapes or combination of shapes, characters such as letters or numbers, symbols such as a trademark or logo, and the like.
In some embodiments, the upper 20 may include more than one layer of materials to define at least an exterior layer and an interior layer.
The liner 90 can be formed from one or more material elements joined together to line the upper 20. The liner 90 can extend over a portion of, or the entire interior surface of, the knitted textile layer 91. It is noted that while two layers are shown in
In some embodiments, the lacing cords 52, 62 are embroidered to the outer knitted textile layer 91 and not the liner 80. For example, using the primary lacing cord 52 as an example in
In the example shown in
The knitted textile layer 91 can include the first region 80, second region 81, and third region 82 discussed above with reference to
While not shown in
An alternative embodiment of a forefoot portion of the upper is shown in
With any of the embodiments of the footwear 10 disclosed herein, the footwear 10 can include additional fastening provisions, include, but are not limited to, cables, straps, buttons, zippers as well as any other provisions known in the art for fastening footwear. The lacing system 30 can include other components known in the art for fastening footwear, including one or more eyelets, tabs, channels, hooks, D-rings, or the like.
There are several advantages of the present disclosure arising from the various features of the articles, systems, and methods described herein. For example, the embodiments of the invention described herein provide a lacing system that can distribute pulling force from a lace across a wide area of the upper, and helps prevent stretching, ripping, or pulling of the parts of the footwear. By embroidering elongated segments of the lace supports for the lace to a knitted upper, tension can be distributed across multiple points of the knitted upper, which provides a robust construction. Similar advantages are provided for non-knitted uppers, such as uppers made from thin materials.
Another advantage of the present disclosure realized in at least some embodiments of the articles, systems, and methods described herein is that the lace interlocks the secondary lace support with the primary lace support, and can prevent the secondary loops from withdrawing completely from the primary loops.
Yet another advantage of the present disclosure realized in at least some embodiments of the articles, systems, and methods described herein is that portions of the knitted upper can be configured with particular physical attributes for the lacing system. For example, the regions of the upper to which the lacing cords are embroidered can be stiffer and/or denser to provide support for the lacing cords and the regions of the upper between segments of the lacing cords can be more elastic and/or breathable.
The above description is that of current embodiments of the invention. Various alterations and changes can be made without departing from the spirit and broader aspects of the invention as defined in the appended claims, which are to be interpreted in accordance with the principles of patent law including the doctrine of equivalents. This disclosure is presented for illustrative purposes and should not be interpreted as an exhaustive description of all embodiments of the invention or to limit the scope of the claims to the specific elements illustrated or described in connection with these embodiments. For example, and without limitation, any individual element(s) of the described invention may be replaced by alternative elements that provide substantially similar functionality or otherwise provide adequate operation. This includes, for example, presently known alternative elements, such as those that might be currently known to one skilled in the art, and alternative elements that may be developed in the future, such as those that one skilled in the art might, upon development, recognize as an alternative. Further, the disclosed embodiments include a plurality of features that are described in concert and that might cooperatively provide a collection of benefits. The present invention is not limited to only those embodiments that include all of these features or that provide all of the stated benefits, except to the extent otherwise expressly set forth in the issued claims. Any reference to claim elements in the singular, for example, using the articles “a,” “an,” “the” or “said,” is not to be construed as limiting the element to the singular. Any reference to claim elements as “at least one of X, Y and Z” is meant to include any one of X, Y or Z individually, and any combination of X, Y and Z, for example, X, Y, Z; X, Y; X, Z; and Y, Z.
This application is a continuation of U.S. patent application Ser. No. 16/518,044, filed Jul. 22, 2019, which is incorporated herein by reference in its entirety.
Number | Date | Country | |
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Parent | 16518044 | Jul 2019 | US |
Child | 17403229 | US |