A needle assembly for a stitching machine comprises a stitching jig comprising a needle holder, a needle clamp hoop and a fixing jig. The needle holder has needle sockets to hold a plurality of needles. The needle clamp hoop is connected to the needle holder to retain needles in the sockets. The fixing jig is connected to the needle clamp hoop to couple with a reciprocating bar of the stitching machine. A method for manufacturing an article of footwear upper comprises laying out a first sheet of material; positioning a second sheet of material to overlap with the first sheet of material at an overlap; positioning a felt material adjacent the overlap so that the second sheet of material is between the first sheet of material and the felt material; and felting the felt material to draw fibers of the felt material through the first and second sheets of material.

A variable friction shoe includes a midsole and an outsole. The outsole includes at least a first high-friction surface and at least a first low-friction surface, wherein the first low-friction surface remains prominent if vertical ground reaction forces (GRFs) are low and wherein the high-friction surface is prominent in response to increasing GRFs.

An article of footwear includes an upper, a heel element, a sole structure, a medial side, and a lateral side. The upper includes an outer surface that defines a forefoot region, a midfoot region, and a heel region. The upper includes a membrane layer and a material layer. The material layer includes a knit fabric and defines a first knit zone and a second knit zone. The first knit zone has a tighter knit than the second knit zone.

An article of footwear with a braided upper is disclosed. The article includes a braided upper with a bottom opening and a bottom peripheral portion surrounding the bottom opening. An article can include an insole component with a projecting portion that fits though the bottom opening. An article may otherwise include a midsole component with an upper projecting portion that fits through the bottom opening. A midsole component and/or an insole component may be attached directly to the bottom peripheral portion of the braided upper using a bonding agent.

The present invention relates to a shoe upper, in particular an upper knitted on a circular knitting machine, including an elongated hollow knit structure, including: a first zone including a first predetermined property; a second zone including a second predetermined property; wherein the elongated hollow knit structure includes less than ten distinct ply types of yarn including less than five distinct materials.

An article of footwear includes a decoupled foot stabilizer system. The foot stabilizer system is decoupled from a midfoot region of the article of footwear. The foot stabilizer system includes a plurality of strap members. The foot stabilizer system may optionally include a bootie. The plurality of strap members extend underneath a portion of a foot of a wearer. The plurality of strap members are configured to receive a lace at one end. A lace running through the ends of the strap members pulls on the strap members when the lace is tightened and causes the foot stabilizer system to conform to the wearer's foot.

An article of footwear comprises a sole structure and an upper. The upper is connected to the sole structure to form an enclosure to at least partially receive a foot. The upper comprises a first panel, a second panel, a backing panel and fibers. The first panel and the second panel at least partially form the enclosure. The backing panel is located within the enclosure along surfaces of the first and second panels. The fibers extend from the backing panel and are mechanically embedded in the first and second panels so that at least some of the fibers are partially disposed outside the enclosure.

A yarn or thread may include a plurality of substantially aligned filaments, with at least ninety-five percent of a material of the filaments being a thermoplastic polymer material. Various woven textiles and knitted textiles may be formed from the yarn or thread. The woven textiles or knitted textiles may be thermal bonded to other elements to form seams. A strand that is at least partially formed from a thermoplastic polymer material may extend through the seam, and the strand may be thermal bonded at the seam. The woven textiles or knitted textiles may be shaped or molded, incorporated into products, and recycled to form other products.

The embodiments relate to an article of footwear and method of manufacturing that includes a first layer and a second layer configured to form a plurality of tunnels configured to receive a cord system. The manufacturing includes steps of placing a first layer, placing a cord on the first layer, securing the cord on the first layer, placing a second layer on the first layer and the cord, attaching the second layer to the first layer, and detaching the cord from the first layer. When the cord is secured with a thread, the thread may be removed by dissolving or cutting. The attaching of the second layer to the first layer can be completed by stitching or thermal welding, for example.

A method for waterproofing footwear may include spraying a waterproofing liquid onto an inner surface of the upper of the footwear during the manufacturing process. A liner attached to the footwear may be turned inside out and/or pulled at least partially out of the upper to uncover the interior surface of the upper. By spraying the liquid onto the interior surface and onto the seam between the liner and the upper, these surfaces may be made waterproof.