A variety of articles are formed from textiles. As examples, articles of apparel (e.g., shirts, pants, socks, footwear, jackets and other outerwear, briefs and other undergarments, hats and other headwear), containers (e.g., backpacks, bags), and upholstery for furniture (e.g., chairs, couches, car seats) are often at least partially formed from textiles. These textiles are often formed by weaving or interlooping (e.g., knitting) a yarn or a plurality of yarns, usually through a mechanical process involving looms or knitting machines. One particular object that may be formed from a textile is an upper for an article of footwear.
Conventional articles of footwear generally include two primary elements: an upper and a sole structure. The upper is secured to the sole structure and forms a void within the article of footwear for comfortably and securely receiving a foot. The sole structure is secured to a lower surface of the upper so as to be positioned between the upper and the ground. In some articles of athletic footwear, for example, the sole structure may include a midsole and an outsole. The midsole may be formed from a polymer foam material that attenuates ground reaction forces to lessen stresses upon the foot and leg during walking, running, and other ambulatory activities. The outsole may be secured to a lower surface of the midsole and forms a ground-engaging portion of the sole structure that is formed from a durable and wear-resistant material.
The upper of the article of footwear generally extends over the instep and toe areas of the foot, along the medial and lateral sides of the foot, and around the heel area of the foot. Access to the void on the interior of the upper is generally provided by an ankle opening in a heel area of the footwear. A lacing system is often incorporated into the upper to adjust the fit of the upper, thereby facilitating entry and removal of the foot from the void within the upper. The upper may include a tongue that extends under the lacing system to enhance adjustability of the footwear, and the upper may incorporate a heel counter to limit movement of the heel.
In one aspect, the present disclosure relates to an article at least partially formed by a knitted component. In some embodiments, the article may include an upper for an article of footwear. The knitted component may include a seamless portion extending from a toe area, through a midfoot area, and to a heel area of the upper on at least one of a lateral and a medial side of the upper. A first course may at least partially form the knitted component, and the first course may extend from the heel area to the toe area of the upper.
The first course may include a continuous strand of yarn extending from the heel area to the toe area of the upper.
The knitted component may include a first edge and a second edge, where the first edge and the second edge are attached at a seam. The seam may be located on the lateral side of the upper if the seamless portion is located on the medial side of the upper, or the seam may be located on the medial side of the upper if the seamless portion is located on the lateral side of the upper.
The first course may at least partially form one of a first layer and a second layer of a scallop element of the knitted component. The first layer of the scallop element may form an inner surface of the upper at least partially defining a void, and the second layer of the scallop element may form an external surface of the upper. The first layer of the scallop element may include more courses than the second layer of the scallop element.
The scallop element may include a length along the first direction and a width along the second direction, where the length is greater than the width. In some embodiments, the length may be at least twice the width.
In another aspect, the present disclosure relates to a method for forming an upper for an article of footwear. The method may include knitting a knitted component on a knitting machine with a seamless portion extending from a toe area, through a midfoot area, and to a heel area of the knitted component. Knitting the knitted component may include moving a feeder through a single pass to form at least a portion of the heel area of the knitted component, at least a portion of the midfoot area of the knitted component, and at least a portion of the toe area of the knitted component.
The single pass may form a first course, and the first course may include a continuous strand of yarn extending from the heel area to the toe area of the upper.
The method may include attaching a first edge of the knitted component and a second edge of the knitted component at a seam after knitting the knitted component.
The pass may at least partially form one of a first layer and a second layer of a scallop element of the knitted component. The first layer of the scallop element may form an inner surface of the upper at least partially defining a void, and the second layer of the scallop element may form an external surface of the upper. The first layer of the scallop element may include more courses than the second layer of the scallop element. The method may include pressing the first layer of the scallop element toward the second layer of the scallop element and providing heat to the first layer of the scallop element.
The accompany drawings, which are incorporated herein and constitute part of this specification, and, together with the general description given above and the detailed description given below, serve to explain features of the present invention.
Various aspects are described below with reference to the drawings in which like elements generally are identified by like numerals. The relationship and functioning of the various elements of the aspects may better be understood by reference to the following detailed description. However, aspects are not limited to those illustrated in the drawings or explicitly described below. It also should be understood that the drawings are not necessarily to scale, and in certain instances details may have been omitted that are not necessary for an understanding of aspects disclosed herein, such as conventional fabrication and assembly.
Certain aspects of the present disclosure relate to articles at least partially formed from textiles. One example of an article is an article of apparel (e.g., shirts, pants, socks, footwear, jackets and other outerwear, briefs and other undergarments, hats and other headwear, or the like). The article may be an upper configured for use in an article of footwear. The upper may be used in connection with any type of footwear. Illustrative, non-limiting examples of articles of footwear include a basketball shoe, a biking shoe, a cross-training shoe, a global football (soccer) shoe, an American football shoe, a bowling shoe, a golf shoe, a hiking shoe, a ski or snowboarding boot, a tennis shoe, a running shoe, and a walking shoe. The upper may also be incorporated into a non-athletic shoe, such as a dress shoe, a loafer, and a sandal.
Referring to
The article of footwear 100 may additionally comprise a throat area 112 and an ankle opening 114, which may be surrounded by a collar 116 and may lead to a void 118. The void 118 of the article of footwear 100 may be configured to accommodate a foot of a person. The throat area 112 may be generally disposed in a midfoot area 120 of the upper 102. The midfoot area 120 is generally an area of the upper 102 located between a heel area 122 and a toe area 124. In some embodiments, a tongue may be disposed in the throat area 112, but a tongue is an optional component. The tongue may be any type of tongue, such as a gusseted tongue or a burrito tongue. If a tongue is not included, the lateral and medial sides of the throat area 112 may be joined together. As shown, in some embodiments, the article of footwear 100 may include an optional fastening element, such as a lace (which may be associated with the lace apertures 126). Any suitable type of fastening element may be used.
The article of footwear 100 may include one or more scallop elements 128. The scallop elements 128 may be arranged at any suitable location of the article of footwear, such as in the heel area 122 (as shown), the medial side 108, the lateral side 106, the toe area 124, and/or another location. The scallop elements 128 may be formed by two layers with a pocket therebetween (as described in more detail below) and may extend outward with respect to an outer surface 130 of the upper 102. The scallop elements 128 may be advantageous for providing the article of footwear 100 with suitable cushioning, rigidity (e.g., without sacrificing flexibility in certain directions), durability, desirable aesthetic properties, or other properties. Any suitable number of scallop elements 128 may be included. In some embodiments, about 1 to about 200 scallop elements may be included, such as about 5 to about 100 scallop elements, and more particularly about 15 to about 50 scallop elements in certain embodiments.
Referring to
Forming the upper 102 with the knitted component 132 may provide the upper 102 with advantageous characteristics including, but not limited to, a particular degree of elasticity (for example, as expressed in terms of Young's modulus), breathability, bendability, strength, moisture absorption, weight, abrasion resistance, and/or a combination thereof. These characteristics may be accomplished by selecting a particular single layer or multi-layer knit structure (e.g., a ribbed knit structure, a single jersey knit structure, or a double jersey knit structure), by varying the size and tension of the knit structure, by using one or more yarns formed of a particular material (e.g., a polyester material, a relatively inelastic material, or a relatively elastic material such as spandex), by selecting yarns of a particular size (e.g., denier), and/or a combination thereof. The knitted component 132 may also provide desirable aesthetic characteristics by incorporating yarns having different colors, textures or other visual properties arranged in a particular pattern. The yarns themselves and/or the knit structure formed by one or more of the yarns of the knitted component 132 may be varied at different locations such that the knitted component 132 has two or more portions with different properties (e.g., a portion forming the throat area 112 of the upper 102 may be relatively elastic while another portion may be relatively inelastic). In some embodiments, the knitted component 132 may incorporate one or more materials with properties that change in response to a stimulus (e.g., temperature, moisture, electrical current, magnetic field, or light). For example, the knitted component 132 may include yarns formed of a thermoplastic polymer material (e.g., polyurethanes, polyamides, polyolefins, and nylons) that transitions from a solid state to a softened or liquid state when subjected to certain temperatures at or above its melting point and then transitions back to the solid state when cooled. The thermoplastic polymer material may provide the ability to heat and then cool a portion of the knitted component 132 to thereby form an area of bonded or continuous material that exhibits certain advantageous properties including a relatively high degree of rigidity, strength, and water resistance, for example.
Referring to
Referring to
In some embodiments, the first course 150 may include a continuous strand of yarn 152 that extends from the heel area 122 to the toe area 124 of the upper 102. Additionally or alternatively, one or more strands of yarn forming at least a portion of the first course 150 may extend less than the full length of the first course 150. For example, it is contemplated that a strand of yarn may extend from the heel area 122 to the midfoot area 120 but may terminate within the first course 150 prior to reaching the toe area 124. Similarly, it is contemplated that a strand of yarn may extend within the first course 150 from the midfoot area 120 to the toe area 124, but may terminate prior to reaching the heel area 122. As shown in
The second layer 156 may be configured such that an apex 160 (defined as an extreme or terminal peak) is configured to slant in a particular direction. For example, if the yarns forming the second layer 156 are relatively compliant, the second layer 156 may droop due to gravitational pull or otherwise slant such that the apex 160 is offset with respect to the centerline of the scallop element 128 depicted in
As best shown in
When the knitted component 132 is included in an upper, the second layer 156 of the scallop elements 128 may form an external surface of an upper (depicted in
As shown in
A scallop element 128 may include a length 162 along the first direction and a width 164 along the second direction. The length 162 may be larger than the width 164, for example. The larger length 162 may provide the scallop element 128 with suitable dimensions such that the apex 160 is configured to slant in the second direction (perpendicular the length). For example, providing the scallop element 128 with a high length-to-width ratio may simplify the knitting process of the scallop element 128 when it is desired for the scallop element 128 to have an apex 160 slanting in the second direction. It is contemplated that, with a high length-to-width ratio, the scallop element 128 can be given appropriate characteristics for forming a suitable apex by knitting with an ottoman knit structure, where the second layer 156 includes more courses/passes than the first layer 154. In some embodiments, the length 162 of the scallop element 128 may be at least 25% larger than the width 164, at least 50% larger than the width 164, at least twice the width 164, at least five times the width 164, or greater than five times the width 164. In one non-limiting exemplary embodiment, the length 162 of the scallop element 128 may be about twice the width 164. The length of scallop elements 128 on a single article can vary, or each scallop element 128 on a single article can have the same length. In some embodiments, the length 162 of a scallop element 128 may be about 0.25 cm to about 5 cm, such as about 0.75 cm to about 3 cm.
A variety of processes are contemplated for manipulating the scallop elements 128, and these processes may occur during or after the knitting process for forming the knitted component 132. For example, referring to
While the embodiments of the scallop elements 128 and other features are described generally herein with reference to an upper for an article of footwear, those features could additionally or alternatively be incorporated into another type of article. For example, knitted scallop elements may be included in articles of apparel (e.g., shirts, pants, socks, footwear, jackets and other outerwear, briefs and other undergarments, hats and other headwear), containers (e.g., backpacks, bags), and upholstery for furniture (e.g., chairs, couches, car seats).
In the present disclosure, the ranges given either in absolute terms or in approximate terms are intended to encompass both, and any definitions used herein are intended to be clarifying and not limiting. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of the present embodiments are approximations, the numerical values set forth in the specific examples are reported as precisely as possible. Any numerical value, however, inherently contains certain errors necessarily resulting from the standard deviation found in their respective testing measurements. Moreover, all ranges disclosed herein are to be understood to encompass any and all subranges (including all fractional and whole values) subsumed therein.
Furthermore, the present disclosure encompasses any and all possible combinations of some or all of the various aspects described herein. It should also be understood that various changes and modifications to the aspects described herein will be apparent to those skilled in the art. Such changes and modifications can be made without departing from the spirit and scope of the present disclosure and without diminishing its intended advantages. It is therefore intended that such changes and modifications be covered by the appended claims.
This application is a continuation of and claims priority to U.S. patent application Ser. No. 15/429,945, entitled “Knitted Article with at Least One Scallop Element and Methods of Manufacture,” which was filed with the U.S. Patent and Trademark Office on Feb. 10, 2017, the disclosure of which application being incorporated herein by reference in its entirety.
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Number | Date | Country | |
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Child | 17557596 | US |