Knitted athletic shoe with continuous upper

Abstract

Shoes can include various features that improve performance, improve manufacturing efficiency, and provide environmental benefits over traditional shoes. In some cases, a shoe includes an upper that is composed of a continuous piece of fabric that includes multiple regions having different fabric properties to improve the performance of the shoe, including durability and comfort. The upper can define a collar region and a flexible region that is adapted to expand to allow a wearer to step into the shoe and contract to secure the shoe on the wearer's foot. The shoe can also include a heel securement that is adapted to conform to the shape of the wearer's foot and secure the shoe on the wearer's foot. Eyelets of the shoe can be disposed along an outer surface of the upper to improve comfort and simplify manufacturing.

Description

[0001] Cross-references to related applications

[0002] This Patent Cooperation Treaty patent application claims priority to U.S. Nonprovisional Patent Application No. 16 / 859,807, filed April 27, 2020, entitled “Knitted athletic shoe with a continuous upper,” the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] The embodiments described herein relate to footwear, specifically to athletic shoes with features that improve the wearer's athletic performance. Background Technology

[0004] Shoes are widely used to protect and provide comfort to the wearer's feet. Traditional shoes consist of an upper formed by attaching several individual parts together. In some cases, traditional shoes made from bio-based materials such as wool are not designed to be waterproof or contain other pollutants. In others, traditional shoes are made entirely of synthetic materials, the production and use of which may be harmful to the environment and may hinder the recycling of the shoes. Many traditional athletic shoes use less environmentally friendly materials to achieve the desired durability and foot support. For example, in many cases, the soles of traditional athletic shoes, which are stiffer or more robust to provide enhanced support, may be made of materials that are not easily broken down for recycling or disposal. Summary of the Invention

[0005] Some embodiments described herein generally relate to, include, or take the form of a shoe comprising a sole and an upper portion. The sole may define a tread surface and a top surface opposite the tread surface. The upper portion may be attached to the top surface of the sole and may cooperatively define a cavity with one or more other parts of the shoe. The upper portion may include a cuff region that at least partially surrounds an opening into the cavity and defines at least a portion of the periphery of the opening. The cuff region may have a first elasticity. The upper portion may include a flexregion that has a second elasticity. The flexregion and the cuff region may be configured to stretch to increase the size of the opening. The upper portion may also include a peripheral region that at least partially surrounds the cuff region and the flexregion. The peripheral region may have a third elasticity, less than the first and second elasticities. The flexregion may be configured to pull the peripheral region toward the wearer's foot to provide enhanced structural stability. The upper portion may be formed of a continuous fabric comprising eucalyptus fibers.

[0006] Other embodiments described herein may relate to a shoe including a sole and a knitted upper, the sole defining a contact surface, and the knitted upper attached to the sole and defining a cavity. The knitted upper may include a collar area surrounding an opening into the cavity and defining at least a portion of the periphery of the opening. The collar area may comprise an elastic material. The shoe may also include a heel retainer disposed along an inner surface of the knitted upper and extending into the cavity. The heel retainer may be configured to conform to a wearer. The collar area may be configured to apply an elastic force that pulls the heel retainer toward the wearer to secure the shoe to the wearer. The knitted upper may be knitted as a single, integral piece.

[0007] Other embodiments described herein may relate to a shoe including a shoe upper, a first set of eyelets, a second set of eyelets, and laces. The shoe upper may at least partially define a cavity. The shoe upper may include a peripheral region and a flexible region, the peripheral region extending around the periphery of the shoe upper and comprising eucalyptus fibers, and the flexible region being at least partially surrounded by the peripheral region and comprising eucalyptus fibers and an elastic material. The first set of eyelets may be disposed along the outer surface of the shoe upper on a first side of the flexible region. The second set of eyelets may be disposed along the outer surface of the shoe upper on a second side of the flexible region opposite the first side. The laces may extend through one or more eyelets of the first set of eyelets and one or more eyelets of the second set of eyelets. The outer surface of the shoe upper may be defined by a continuous knitted fabric, and the flexible region, laces, first set of eyelets, and second set of eyelets may be configured to cooperatively secure the shoe around the foot. Attached Figure Description

[0008] Reference will now be made to the representative embodiments shown in the accompanying drawings. It should be understood that the following description is not intended to limit the invention to a single preferred embodiment. Rather, the content provided herein is intended to cover alternatives, modifications, and equivalents that may be included within the spirit and scope of the described embodiments and as defined in the appended claims.

[0009] Figure 1 An example shoe is shown, which has a knitted fabric upper.

[0010] Figure 2 It shows Figure 1 A top view of an example shoe;

[0011] Figure 3 It shows Figure 1 The example shoe's upper outer layer;

[0012] Figure 4A It shows Figure 1 The inner layer of the upper part of the example shoe;

[0013] Figure 4B It shows Figure 4AThe inner layer, wherein components are attached to the inner layer, and the components define... Figure 1 At least a portion of the inner surface of the upper part of the example shoe;

[0014] Figure 5A It shows Figure 1 A side view of an example shoe;

[0015] Figure 5B It shows Figure 5A Detailed view of section 1-1;

[0016] Figure 6 It shows Figure 1 A partial sectional view of an example shoe;

[0017] Figure 7 It shows Figure 1 Example shoe rear view; and

[0018] Figure 8 It shows Figure 1 Example shoe bottom view.

[0019] Using the same or similar reference numerals in different figures to indicate similar, related or identical items.

[0020] Furthermore, it should be understood that the scale and dimensions (relative or absolute) of the various features and elements (and their sets and groups) provided in the accompanying drawings, as well as the boundaries, spacing and positional relationships between them, are provided only to facilitate understanding of the various embodiments described herein, and therefore may not necessarily be presented or illustrated to scale, and are not intended to indicate any preference or requirement of the illustrated embodiments while excluding the embodiments described herein. Detailed Implementation

[0021] Reference will now be made in detail to the representative embodiments shown in the accompanying drawings. It should be understood that the following description is not intended to limit the embodiments to a single preferred embodiment. Rather, it is intended to cover alternatives, modifications, and equivalents that may be included within the spirit and scope of the described embodiments as defined in the claims.

[0022] The shoes described herein include a variety of features designed to improve performance during intense or fast-paced activities such as running and exercise, increase manufacturing efficiency, and provide environmental benefits superior to conventional shoes. In some cases, the shoes include an upper portion (e.g., a knitted upper portion) constructed from a continuous fabric (e.g., a continuous knitted fabric) that includes multiple zones with different fabric properties to improve shoe performance, including enhanced support, increased durability, and improved comfort during athletic performance.

[0023] The upper part of the shoe can cooperate with one or more other shoe components to define a cavity for accommodating the wearer's foot. The upper part can define a continuous single outer surface surrounding an opening leading to the cavity, the outer surface having a seam and not perforations through the knitted fabric forming the upper part. This helps the shoe fit the wearer's foot more comfortably, improving support and overall shoe performance during physical activity.

[0024] The upper part of the shoe may define a collar area that is adapted to extend at least partially around the wearer's foot or ankle during use to help secure the shoe to the wearer's foot. This collar area can improve the fit and comfort of the shoe by, for example, reducing friction, slippage, or other problems associated with poor fit. The collar area may at least partially surround an opening. In some cases, the collar area extends at least partially around the perimeter of the opening. Furthermore, the collar area may define the opening and / or its perimeter. In some cases, the collar area extends around the entire perimeter of the opening. The fabric characteristics of the collar area can be selected to enhance comfort, durability, and other fabric properties. For example, the collar area may have increased flexibility, elasticity, and breathability compared to other areas of the upper part of the shoe. When the wearer engages in strenuous or fast-paced activities (such as running or exercising), the collar area allows the shoe to fit more comfortably, thereby reducing shoe movement relative to the foot. The collar area of ​​the shoe may be formed at least partially using a ribbed knit pattern that defines ribs along one or more surfaces of the collar area.

[0025] As used herein, “elasticity” can refer to a measure of the ability or tendency of a material or combination of materials to elastically deform under applied stress. Similarly, the term “elastic deformation” can refer to the ability or tendency of a material to change size or shape under applied stress (e.g., force) and substantially return to its initial size or shape after the applied stress is removed.

[0026] The upper portion of the shoe defines a flexible zone that typically extends over the wearer's foot during use. This flexible zone can offer increased flexibility, elasticity, and breathability compared to other areas of the upper. The collar area can work in conjunction with the flexible zone and / or heel counter to secure the shoe to the wearer's foot. Similarly, the collar and flexible zones can stretch to allow the wearer's foot into the shoe and then contract to secure the shoe to the foot. This can provide additional support to the wearer's foot during use, such as enhanced support and athletic performance during strenuous or fast-paced activities like running or workouts.

[0027] The shoe may include a heel retainer along the inner surface of the upper part of the shoe. The heel retainer may extend into a cavity and may define a recess between the heel retainer and the insole. The recess and the heel retainer may conform to the shape of the wearer's foot (e.g., the wearer's heel and / or calcaneus) to secure the wearer's foot in the cavity and / or minimize slippage or friction of the wearer's foot on the inner surface of the upper part of the shoe. In other words, the wearer's heel may conform to the underside of the heel retainer so that when the wearer runs or engages in strenuous exercise, the heel retainer holds the heel in place or reduces heel movement.

[0028] The heel counter works in conjunction with one or more other parts of the shoe, including the collar area, to secure the shoe to the wearer's foot. The collar area can apply elasticity to pull the heel counter toward the wearer's foot for more effective shoe fixation. The heel counter can increase shoe comfort by providing padding between the collar area and sensitive parts of the wearer's foot or leg, including the area around the Achilles tendon. This avoids or reduces discomfort caused by the elasticity applied to the wearer by the collar area. It also provides enhanced support and stability during physical activities such as running or exercising.

[0029] The upper part of the shoe may define more than one peripheral area along the side of the shoe. The peripheral area may be stiffer or thicker than other areas, providing enhanced stability and support for the wearer, such as during strenuous or fast-paced activities (e.g., running or exercise). The upper part of the shoe may define a toe area, typically located above the wearer's toes during use. The toe area may be less prone to damage or deformation, for example, because it experiences less force than other areas (e.g., the peripheral area). Therefore, the fabric properties of the toe area can be selected to increase or otherwise enhance comfort and other fabric characteristics. For example, the toe area may have increased breathability and flexibility compared to the peripheral and / or other areas.

[0030] The increased flexibility and / or elasticity of the shoe collar area and / or flexible areas, compared to other areas, helps the wearer put on and take off the shoes. The shoe collar area and / or flexible areas can stretch to expand the opening into the cavity, aiding the wearer in putting on and taking off the shoes. The increased elasticity of the shoe collar area and / or flexible areas further enhances shoe comfort and / or durability by allowing the upper part of the shoe to return to its original shape after undergoing deformation (including deformation due to putting on and taking off and normal use, such as wearing). This prevents permanent deformation of the upper part of the shoe in the shoe collar area and / or flexible areas, which could otherwise adversely affect the shoe's performance and comfort.

[0031] Shoes may include eyelets located on the upper exterior of the shoe (e.g., along the upper outer surface of the shoe). In some cases, each eyelet is entirely outside the upper part of the shoe. In other words, no part of any eyelet extends through or lies beneath any part of the upper outer surface of the shoe. This allows for the manufacture of shoes without forming large holes in the upper part; this can improve the comfort and durability of the shoe. Shoes may include laces that pass through openings in the eyelets to secure the shoe to the wearer's foot. The laces may extend through a flexible area and can be attached to the upper part of the shoe through more than one eyelet on opposite sides of the flexible area. The laces can pull the eyelets together, compressing the flexible area above the wearer's foot and stressing the sides of the shoe (e.g., the peripheral area). This not only secures the shoe but also provides additional tension to the wearer's body, thus supporting the wearer's foot during activities such as walking, running, exercising, etc.

[0032] In some cases, the shoes described herein may be constructed at least partially using bio-based materials. As used herein, the term "bio-based material" may refer to a material made from a substance at least partially derived from a living or formerly living organism. The upper portion of the shoe may contain bio-based materials. Additionally or alternatively, other parts of the shoe may contain bio-based materials. For example, the sole may contain a bio-based foam material made from sugarcane, the insole may contain a bio-based foam material made from castor oil, and the eyelets may contain a bio-based plastic made from castor oil. In some cases, the shoes described herein may be constructed at least partially using recycled materials. For example, the shoelaces may be at least partially made from recycled plastic bottles.

[0033] In various implementations, the bio-based and recycled materials used in the shoes described herein offer significant environmental benefits compared to conventional shoes. Using bio-based materials as an alternative to synthetic materials reduces harmful emissions associated with shoe manufacturing by reducing or eliminating the processing of hazardous chemicals, such as petroleum products used to manufacture most synthetic fibers. Similarly, bio-based materials are more ecologically sustainable than many synthetic materials because they are derived from renewable resources (such as plant fibers, sugarcane, and corn sugar) rather than non-renewable resources (such as petroleum products). Eucalyptus fiber is particularly environmentally friendly and sustainable because eucalyptus trees generally do not require irrigation or pesticides and can be grown in areas unsuitable for other agricultural uses. Likewise, using recycled materials instead of new materials reduces waste sent to landfills and incinerators, protects natural resources, prevents pollution, and saves energy associated with the collection and processing of new raw materials.

[0034] In addition to using bio-based and recycled materials, the shoes described herein may include a variety of features that make shoe recycling easier. For example, because, for instance, the upper of the shoe is formed of a continuous fabric, the shoe may have fewer parts that need to be separated from each other as part of the recycling process.

[0035] In some cases, shoes are designed to allow wearers to go without socks. In various implementations, shoes may include features that improve performance when not wearing socks. The upper portion of the shoe can improve comfort, especially when not wearing socks, by reducing or eliminating seams that may irritate the wearer.

[0036] In various embodiments, the upper part of the shoe is attached to a first side of the sole, and the sole defines a contact surface on an opposite second side, the contact surface being adapted to contact the ground or other surfaces when the shoe is worn. Additionally or alternatively, the sole may include more than one region with different material properties, these regions defining the contact surface and adapted to contact the ground or other surfaces when the shoe is worn. The sole may be attached to the upper part of the shoe, for example, using an adhesive.

[0037] As used herein, “fabric” or “textile” can mean a flexible material consisting of a network of natural and / or man-made fibers (e.g., yarns or threads forming a cloth) formed by any suitable process, including but not limited to weaving, knitting, spreading, crocheting, knotting, felting, bonding, braiding, and carpeting.

[0038] As used herein, “fabric properties” can refer to properties that define the dimensions and characteristics of a fabric, including but not limited to fiber properties (e.g., fiber type, size, and length), yarn properties (e.g., yarn diameter, twist, weight, size, count, fiber content or fiber ratio, ply yarn, number of plies in a ply yarn), weight, thickness, fabric structure, fabric density, woven properties (e.g., weave type, warp and weft counts), knitted properties (e.g., knit type, warp and weft counts), polishing agents or coatings (e.g., chemicals, resins, starches, and waxes), and mechanical effects (e.g., calendering, napping, flocking, and brushing).

[0039] As used herein, “fabric properties” can refer to a measure of fabric performance, including but not limited to stiffness (e.g., tensile or flexural strength), flexibility (e.g., reduced stiffness), breathability (e.g., air permeability), water resistance, moisture wicking, odor resistance, durability properties, visual properties (e.g., fabric appearance), and tactile properties (e.g., fabric feel). As used herein, “water resistance” can refer to the ability of a shoe to prevent or reduce the ingress of water, other liquids, or other contaminants into the cavities of the shoe and / or into other parts of the shoe. As used herein, “durability” can refer to the ability of a material (e.g., fabric) or object (e.g., shoe) to resist abrasion, deformation, and / or damage and / or to retain its fabric properties, structure, visual characteristics, and / or tactile properties. As used herein, “durability properties” can refer to a measure of fabric durability, including but not limited to abrasion strength (e.g., abrasion resistance), bursting strength (e.g., the ability to withstand forces applied at right angles to the plane of the fabric), and tensile strength (e.g., the ability to withstand forces applied along the plane of the fabric).

[0040] Figure 1 An example shoe 100 with a knitted fabric upper 110 is shown. The upper 110 may define the shape or structure of the shoe 100 and may be adapted to accommodate, comfortably and / or protect the foot of the wearer of the shoe 100. As described above, the shoe 100 may include an upper 110 made of a continuous fabric (e.g., a knitted fabric) that defines multiple areas with different fabric properties to improve shoe performance, including durability and comfort. More than one fabric property may be varied in different areas of the upper 110 to obtain the desired fabric properties in each area, thereby achieving the desired shoe performance.

[0041] A multi-zone upper portion 110 can improve the durability of the shoe 100, for example, by having thicker or stiffer zones in areas prone to higher forces that are less susceptible to damage or deformation. Similarly, a multi-zone upper portion 110 can improve the comfort of the shoe 100, for example, by varying the thickness and / or flexibility of different zones to better support or make the wearer's foot more comfortable. The zones of the upper portion 110 will be referred to below. Figure 2 -5. To be discussed in more detail.

[0042] While many traditional shoes comprise an upper formed from multiple different parts or components, in some cases, the upper 110 is formed from a continuous fabric. The continuous fabric can be formed as a single, monolithic piece. Using a continuous fabric to form the upper 110 offers numerous advantages, including improved comfort of the shoe 100 by eliminating seams that may irritate the wearer, and increased manufacturing efficiency by reducing the total number of components in the shoe. The upper 110 can be formed at least partially from bio-based materials, such as eucalyptus fiber, which is more sustainable and environmentally friendly than many materials used in traditional shoes. Furthermore, the continuous fabric construction of the upper 110 reduces the use of potentially harmful chemicals (such as adhesives) used in the shoe 100.

[0043] In some cases, the upper portion 110 of the shoe may include features that provide enhanced rigidity to support the wearer's foot during physical activity. For example, the upper portion may include more than one area with a hardened material (e.g., heat-fused yarn) to improve the shoe 100's ability to support and / or stabilize the wearer's foot during running, exercise, or other physical activities. Additionally or alternatively, the upper portion 110 may include more than one area with increased fabric thickness to improve the shoe 100's ability to support and / or stabilize the wearer's foot during running, exercise, or other physical activities.

[0044] In various embodiments, the continuous fabric used to form the upper part 110 of the shoe can be constructed by any suitable process, including but not limited to weaving, knitting, spreading, crocheting, knotting, felting, bonding, braiding, and blanket weaving. In some cases, the continuous fabric is a knitted fabric. Knitted fabrics can be knitted or otherwise formed into a specific shape (e.g., Figure 3 (And the shape of the upper part 110 of the shoe shown in Figure 4). In some cases, the continuous fabric is knitted into a three-dimensional shape (e.g., a non-planar shape). In some cases, the continuous fabric is cut or otherwise shaped after construction. In various embodiments, different regions have different fabric properties to achieve different fabric characteristics.

[0045] The upper part 110 defines a first portion of the outer surface of the shoe, and the sole 120 defines a second portion of the outer surface of the shoe. The upper part 110 may cooperate with one or more other shoe components to define a cavity 160 for receiving the wearer's foot. Figure 1 (Not shown in the image). Additionally, the upper part 110 may define a first portion of the inner surface of the shoe 100. The upper part 110 may include one or more layers attached together. In some cases, multiple layers are formed together as part of a knitting process. The first and second layers may be interwoven with each other. For example, the knitted structure of the first layer may be interwoven with the knitted structure of the second layer, for example, using a loop transfer technique.

[0046] In some cases, the outer layer of the upper part 110 defines at least a portion of the outer surface of the upper part of the shoe, and the inner layer of the upper part defines at least a portion of the inner surface of the upper part of the shoe. In some cases, the fabric properties may vary between the inner and outer surfaces to achieve the desired shoe performance. For example, the first layer may have a first knitted structure with first fabric properties; the second layer may have a second knitted structure with second fabric properties. Furthermore, the fabric properties and materials may vary at different locations along the inner surface.

[0047] Continuous fabrics can be formed from any suitable material or combination of materials. For example, woven or knitted fabrics can be formed using more than one type of yarn. Yarns can be formed from more than one type of natural or synthetic fibers that are twisted or otherwise bonded together. Exemplary fibers include cellulosic fibers (e.g., eucalyptus fiber, bamboo fiber, rayon, and modal), wool, cotton, silk, polyester, nylon, etc. In some cases, yarns are formed from mixtures of two or more fibers. For example, a yarn can be a mixture of eucalyptus fiber and polyester. In some cases, yarns are ply yarns, which consist of multiple strands twisted or woven together.

[0048] In some cases, shoe 100 includes eyelets 140 and laces 150 passing through the eyelets. Together, they secure shoe 100 to the wearer's foot, for example, by fastening shoe 100 around the wearer's foot. Lace 150 can pull the eyelets 140 together, pressing a portion of shoe 100 (e.g., a flexible area) over the wearer's foot and placing the sides of the shoe (e.g., a peripheral area) under strain or tension. This not only secures shoe 100 to the wearer's foot but also provides additional tension to the wearer's body, thereby supporting the wearer's foot during activities such as walking, running, exercising, etc. In some cases, the flexibility of more than one layer of the upper part 110 of the shoe can enhance the shoe's ability to support the wearer's foot. For example, the area above the wearer's foot may have greater flexibility, allowing the pressure of the eyelets 140 and laces 150 to be more concentrated in the area above the wearer's foot to provide enhanced support and stability. Eyelets 140 and laces 150 will be referenced below. Figure 5A Let's discuss this in more detail.

[0049] The shoe 100 may also include a sole 120, which defines a contact surface suitable for contacting the ground or other surfaces when the shoe is worn. The sole 120 may be attached to the upper part 110 of the shoe, for example, using an adhesive. The sole 120 will be referred to below. Figure 8 Let's discuss this in more detail.

[0050] Figure 2A top view of an example shoe 100 is shown. As described above, the upper part 110 of the shoe may be constructed of a continuous fabric (e.g., a knitted fabric) that includes multiple areas with different fabric properties to improve the performance of the shoe 100, including durability and comfort, and to provide environmental benefits. Figure 2 The example shoe 100 has an upper portion 110 comprising four regions: a peripheral region 210a, a flexible region 210b, a toe region 210c, and a collar region 210d. Each of the four regions 210a-d may have different fabric properties. The different regions of the upper portion 110 work synergistically to provide enhanced performance to the shoe 100 as a whole, including improved durability, comfort, and athletic performance.

[0051] In various embodiments, the multi-regional upper portion 110 of the shoe can improve the durability of the shoe 100, the comfort of the shoe, and / or allow the wearer to wear the shoe comfortably with or without socks. In some cases, the fabric properties and / or fabric characteristics (including fabric thickness or flexibility) can be varied across different regions 210a-d to achieve the desired shoe performance. The location, size, and fabric characteristics of regions 210a-d can be determined based on their position relative to the wearer's foot and / or their position relative to other parts of the shoe 100. As an example, the peripheral region 210a may have increased rigidity and / or thickness compared to more than one of the other regions 210b-d; the flexible region 210b and the collar region 210d may have increased elasticity compared to the peripheral region 210a and / or the toe region 210c. This can improve the stability and support that the shoe 100 provides to the wearer during physical activities such as running and exercise.

[0052] The upper part 110 of the shoe may define one or more peripheral regions 210a along the side of the shoe 100. Peripheral regions 210a may be stiffer or thicker than other regions to provide enhanced stability and support for the wearer, such as during strenuous or fast-paced activities (e.g., running or exercise). In some cases, peripheral regions 210a may correspond to areas more susceptible to damage or deformation, for example, because they withstand greater forces than other regions. For example, compared to other regions, it may be desirable for the peripheral regions 210a of the upper part of the shoe to have higher stiffness, burst strength, tensile strength, or abrasion resistance.

[0053] The peripheral area 210a may extend along the periphery 212 of the upper part of the shoe 110 (where the upper part of the shoe meets the sole 120). Areas of the upper part of the shoe 110 near the periphery 212 may be more susceptible to damage or deformation than other areas of the upper part of the shoe 110. For example, the area near the periphery 212 is closer to the ground than other areas of the upper part of the shoe 110. Similarly, the area near the periphery 212 is closer to the outer edge of the shoe 100 than other areas of the upper part of the shoe 110, thus objects are more likely to come into contact with these areas during wear. Furthermore, the wearer's foot may cause the upper part of the shoe 110 to pull or twist the sole 120 in areas near the periphery 212. Therefore, these areas need to have higher rigidity, abrasion resistance, burst strength, and / or tensile strength than other areas of the upper part of the shoe 110. The upper part of the shoe 110 may include a hardening material in the peripheral area 210a to increase the rigidity, abrasion resistance, burst strength, and / or tensile strength of the peripheral area 210a. For example, the yarn blend used for the peripheral region 210a may include heat-melting yarns (e.g., thermoplastic nylon yarns) to increase the rigidity, abrasion resistance, burst strength, and / or tensile strength of the peripheral region 210a.

[0054] In some cases, one or more peripheral regions 210a extend collaboratively along the perimeter 212 completely around the shoe 100. In some cases, one or more peripheral regions 210a at least partially surround the flexible region 210b, the toe region 210c, and / or the collar region 210d.

[0055] The upper part 110 of the shoe may define a flexible region 210b in an area that typically extends over the wearer's foot during use. Compared to the surrounding area 210a, the flexible region 210b may be less susceptible to damage or deformation, and the fabric properties of the flexible region 210b may be selected to increase or otherwise enhance comfort, durability, and other fabric characteristics. For example, the flexible region 210b may have increased flexibility, elasticity, and breathability compared to other areas. The flexible region 210b may provide additional tension to the wearer's foot during the use of the shoe 100, such as providing enhanced support and athletic performance during strenuous or fast-paced activities (e.g., running or exercise).

[0056] The flexible region 210b may have increased elasticity compared to other regions to help secure the shoe 100 to the wearer's foot. The flexible region 210b may apply pressure to the wearer's foot to secure the shoe to the wearer's foot and / or prevent the wearer's foot from unintentionally slipping out of the cavity 160, which improves the shoe's comfort and durability. The flexible region 210b may extend above the wearer's instep, thus placing the sides of the shoe 100 (e.g., the peripheral region 210a) under strain or tension. This not only secures the shoe 100 to the wearer's foot but also provides additional tension to the wearer's body, thereby supporting the wearer's foot during activities such as walking, running, or exercising. The flexible region 210b may allow the peripheral region 210a to conform more firmly to the wearer's foot to provide lateral stability while preventing the shoe 100 from unduly restricting the wearer's ability to perform sports activities such as running or exercising.

[0057] The increased flexibility and / or elasticity of the flexible region 210b, compared to other regions, helps the wearer put on and take off the shoe 100. The flexible region 210b is capable of stretching to extend the opening 170 into the cavity 160 to assist the wearer in putting on and taking off the shoe 100. This can occur in conjunction with the stretching of the collar region 210d. The increased flexibility and / or elasticity of the flexible region 210b, compared to other regions, can further improve the comfort of the shoe 100, for example, by more effectively conforming the shape of the upper part of the shoe 110 to the wearer's foot during use. The increased elasticity of the flexible region 210b can further improve the comfort and durability of the shoe 100 by allowing the upper part of the shoe to return to its original shape after undergoing deformation (including deformation due to putting on and taking off the shoe and normal use of the shoe, such as wearing it). This prevents permanent deformation of the upper part of the shoe 110 within the flexible region 210b, which could otherwise adversely affect the performance and comfort of the shoe 100.

[0058] The upper part 110 of the shoe may include an elastic material in the flexible region 210b to increase the elasticity and / or flexibility of the flexible region 210b. For example, the yarn blend used for the flexible region 210b may include an elastic polymer (e.g., elastic fibers) to increase the elasticity and / or flexibility of the flexible region 210b. The flexible region 210b, or a portion thereof, may be located between rows of eyelets 140 on each side of the shoe 100. The flexible region 210b may be at least partially surrounded by a peripheral region 210a, a toe region 210c, and / or a collar region 210d. Figure 2 As shown, the peripheral area 210a, the toe area 210c, and the collar area 210d can work together to completely surround the flexible area 210b.

[0059] In some cases, the weave density of more than one layer forming the flexible region 210b can allow the flexible region to be more flexible to improve its ability to support the wearer's foot. In other cases, the outer layer of the flexible region 210b can have a lower weave density, which allows it to stretch and / or contract more than other regions (including the peripheral region 210a).

[0060] The upper part 110 of the shoe may define a toe region 210c in an area that typically lies above the wearer's toes during use. The toe region 210c may be less susceptible to damage or deformation, for example, because it experiences less stress than other areas (such as the peripheral region 210a). Therefore, the fabric properties of the toe region 210c can be selected to increase or otherwise enhance comfort and other fabric characteristics. For example, the toe region 210c may have increased breathability and flexibility compared to the peripheral region 210a and / or other areas. The location of the toe region 210c above the wearer's toes, coupled with its less susceptibility to damage or deformation than other areas, allows the flexible area to be better suited for breathability to dissipate heat from the wearer's foot, thus increasing wearer comfort. For example, the toe region 210c may not contain the hardened material present in the peripheral region 210a, which could make the toe region more breathable than the peripheral region 210a.

[0061] The upper part 110 of the shoe may define a collar area 210d, which at least partially surrounds the opening 170 and extends into the cavity 160. In some cases, the collar area 210d extends completely around the opening 170. The collar area 210d may extend at least partially around the wearer's foot or ankle during use (including during athletic activities) to help secure the shoe 100 to the wearer's foot. This can improve the fit and comfort of the shoe, for example by reducing friction, slippage, or other problems associated with poor fit, and can improve athletic performance by increasing stability and support while allowing flexibility. The collar area 210d can conform to the wearer's ankle to provide enhanced lateral stability and support without unduly restricting movement. The fabric properties of the collar area 210d can be selected to increase or otherwise enhance comfort, durability, and other fabric properties. For example, the collar area 210d may have increased flexibility, elasticity, and breathability compared to other areas, including the peripheral area 210a and the toe area 210c.

[0062] Compared to other areas of the upper part 110 of the shoe, the collar area 210d can have increased elasticity, allowing it to apply pressure to the wearer's foot or leg to secure the shoe 100 to the wearer's foot and / or prevent the wearer's foot from unintentionally slipping out of the cavity 160. This improves the shoe's comfort and durability. The collar area 210d can also conform to the wearer's leg around the ankle to provide enhanced lateral stability and support without unduly restricting movement.

[0063] Similar to the flexible region 210b, the increased flexibility and / or elasticity of the shoe collar region 210d compared to other regions helps the wearer put on and take off the shoe 100. The shoe collar region 210d is capable of stretching to expand the opening 170 into the cavity 160 to assist the wearer in putting on and taking off the shoe 100. This can occur in conjunction with the stretching of the flexible region 210b. The increased flexibility and / or elasticity of the shoe collar region 210d compared to other regions can further improve the comfort of the shoe 100, for example, by more effectively conforming the shape of the upper part of the shoe 110 to the wearer's foot during use. The increased elasticity of the shoe collar region 210d can further enhance the comfort and durability of the shoe 100 by allowing the upper part of the shoe to return to its original shape after undergoing deformation (including deformation due to putting on and taking off the shoe and normal use of the shoe, such as wearing). This prevents permanent deformation of the upper part of the shoe 110 within the shoe collar region 210d, which could otherwise adversely affect the performance and comfort of the shoe 100.

[0064] The upper part 110 of the shoe may include an elastic material in the collar area 210d to increase the elasticity and / or flexibility of the collar area 210d. In some embodiments, the collar area may be formed entirely of a knitted elastic polymer (e.g., elastic fibers). In other embodiments, the yarn blend used for the collar area 210d may include an elastic polymer (e.g., elastic fibers) or other elastic materials to increase the elasticity and / or flexibility of the collar area 210d, as well as other materials (e.g., recycled polyester).

[0065] As described above, shoe 100 may define a cavity 160 adapted to receive the wearer's foot. In some cases, an insole 220 may be disposed within the cavity and may define at least a portion of the inner surface of shoe 100 surrounding the cavity 160. For example, insole 220 may define a foot bed configured to receive and contact the sole of the wearer's foot. Insole 220 may be adapted to be disposed between the wearer's foot and sole 120 to cushion the wearer's foot during wear. Insole 220 may cooperatively define the inner surface of shoe 100 with upper 110 and one or more other parts of shoe 100.

[0066] In various embodiments, the insole 220 may include a top surface and a bottom surface, the top surface defining a portion of the inner surface of the shoe 100, and the bottom surface providing cushioning for the wearer's foot. The top surface may be formed from any suitable material or combination of materials, including eucalyptus fiber, polyester, wool, cotton, nylon, etc. In some cases, the top surface is formed from a combination of eucalyptus fiber and recycled polyester. The bottom surface may be formed from any suitable material or combination of materials, including polyamide, polyethylene, polypropylene, polyurethane (e.g., thermoplastic polyurethane), ethyl vinyl acetate, and polyols. In some cases, the bottom surface is at least partially formed from a bio-based material (e.g., castor oil). As mentioned above, the use of bio-based materials can provide environmental benefits, including reduced emissions and ecological sustainability.

[0067] The shoe 100 may include a heel retainer 230 along the inner surface of the upper portion 110 of the shoe. The heel retainer 230 may extend into a cavity 160 and may define a recess between the heel retainer 230 and the insole 220. The recess and the heel retainer 230 may conform to the shape of the wearer's foot (e.g., the wearer's heel and / or calcaneus) to secure the wearer's foot in the cavity 160 and / or minimize slippage or friction of the wearer's foot on the inner surface of the upper portion 110 of the shoe. The heel retainer 230 may cooperate with one or more other parts of the shoe 100 (including the collar area 210d) to secure the shoe to the wearer's foot. The heel retainer 230 will be referred to below. Figure 6 Let's discuss this in more detail.

[0068] As described above, the upper part of the shoe 110 may be formed of a continuous fabric, and the upper part of the shoe 110 may include multiple layers. Figure 3 Figure 4 shows an exemplary knitted fabric upper 110 of a pre-assembled construction as a continuous fabric. Figure 3 and Figure 4A Different regions 210a-d of the upper part 110 of the shoe are shown. Figure 3 An outer layer 310 of the upper part of the shoe is shown, which defines at least a portion of the outer surface 320 of the upper part of the shoe 110. Figure 4A The inner layer 410 of the upper part of the shoe 110 is shown, which defines at least a portion of the inner surface 420 of the upper part of the shoe 110.

[0069] In various implementations, the desired fabric properties for each region, including flexibility, rigidity, elasticity, breathability, bursting strength, tensile strength, and abrasion resistance, can be achieved by selecting fabric properties that produce the desired fabric properties.

[0070] In some cases, as described above, the fabric properties may differ in different layers and / or regions of the upper part 110 of the shoe. For example, the type and amount of yarn used in each region and layer may vary. (Reference) Figure 3The peripheral region 210a in the outer layer 310 may include yarns containing a mixture of man-made fibers (e.g., polyester) and bio-based fibers (e.g., eucalyptus fibers) and yarns containing thermoplastic materials. For example, in some cases, the peripheral region 210a in the outer layer 310 includes a first yarn and a second yarn, the first yarn being a ply or pre-twisted yarn having three strands containing polyester and eucalyptus fibers (e.g., TENCEL), and the second yarn being formed of thermoplastic nylon.

[0071] In some cases, the first yarn may contain 60% to 80% eucalyptus fiber (e.g., TENCEL) and 20% to 40% polyester. For example, the first yarn may contain 70% eucalyptus fiber and 30% polyester. This fiber blend in the yarn provides advantages including desired fabric hand feel, burst strength, and abrasion resistance. In some cases, the fiber blend may be increased or otherwise reinforced to balance moisture absorption and distribution. In some cases, eucalyptus fiber may absorb or distribute moisture in areas of the fabric, while polyester may wick moisture for evaporation. In some cases, thermoplastic nylon may increase the stiffness and / or abrasion resistance of the peripheral region 210a in the outer layer 310.

[0072] The flexible region 210b and the toe region 210c in the outer layer 310 may include the first yarn described above. In some cases, the flexible region 210b and the toe region 210c do not include thermoplastic material, which helps to increase flexibility (reduce rigidity) and breathability compared to the surrounding region 210a.

[0073] In some cases, more than one region 210a-d may consist only of a single layer defining the inner surface 420 and outer surface 320 of the upper part 110 of the shoe. In some cases, the collar region 210d may consist only of a single layer formed of a third yarn comprising a knitted elastic material (e.g., elastic fiber). The third yarn may help increase the flexibility and / or elasticity of the collar region 210d. In some cases, in addition to the knitted elastic material, the third yarn may also comprise nylon or other materials. The collar region 210d may be attached to one or both of the outer layer 310 or the inner layer 410. In some cases, the collar region 210d is continuously knitted with the flexible region 210b and / or the peripheral region 210a. In some cases, the weave density of more than one layer forming the flexible region 210b may allow the flexible region to be more flexible to improve its ability to support the wearer's foot. In some cases, the outer layer of the flexible region 210b may have a lower weave density, which allows it to stretch and / or shrink more than other regions (including the surrounding region 210a).

[0074] like Figure 4AAs shown, the peripheral region 210a and toe region 210c in the inner layer 410 may include the first yarn and the fourth yarn described above, the fourth yarn having two solid strands comprising polyester and eucalyptus fiber. In some cases, the third yarn comprises the same amount of eucalyptus fiber and polyester as the first yarn described above. The flexible region 210b in the inner layer 410 may include the first yarn, the third yarn, and the fourth yarn. The third yarn may contribute to increased flexibility and / or elasticity of the collar region 210d. In some cases, the outer layer 310 and / or the inner layer 410 of the flexible region 210b may have a knitted pattern different from other regions of the upper part of the shoe. The knitted pattern may allow the flexible region 210b to stretch more than the peripheral region 210a or the toe region 210c.

[0075] In various embodiments, different materials and techniques can be used to achieve the desired fabric properties. In some cases, the desired fabric characteristics can be achieved by varying the thickness (e.g., the distance from the inner surface 420 to the outer surface 320) and / or density (e.g., the amount of yarn per unit area) of the upper part 110 in different regions. For example, in some cases, the first region of the upper part 110 with a first thickness (e.g., the peripheral region 210a) may have increased stiffness, higher burst strength, higher tensile strength, and / or higher abrasion resistance compared to a second region with a second thickness less than the first thickness (e.g., the toe region 210c). Similarly, in some cases, the first region of the upper part 110 with a first density (e.g., the peripheral region 210a) may have increased stiffness, higher burst strength, higher tensile strength, and / or higher abrasion resistance compared to a second region with a second density less than the first density (e.g., the toe region 210c).

[0076] The thickness and / or density of the upper part 110 of the shoe can be determined by the thickness of the fibers in the yarn used in that area, the thickness of the yarn strands used in that area, the number of ply or braided yarn strands in a ply yarn, the density of the knitted pattern in that area, etc. Therefore, compared to a second area with a smaller thickness, the first area of ​​the upper part 110 of the shoe with a first thickness can have coarser fibers, coarser yarns, and / or a denser knitted pattern. Similarly, compared to a second area with a smaller density, the first area of ​​the upper part 110 of the shoe with a first density can have coarser fibers, coarser yarns, and / or a denser knitted pattern.

[0077] While thicker and / or denser areas of the upper part 110 of the shoe can be stiffer, with higher burst strength, higher tensile strength, and / or higher abrasion resistance, thinner and / or less dense areas of the upper part 110 of the shoe can be more breathable (e.g., with higher air permeability) and / or more flexible. Therefore, some areas of the upper part 110 of the shoe can be thinner and / or less dense to achieve flexibility and breathability, which can improve the comfort of the shoe 100 by allowing moisture to evaporate from the wearer's foot.

[0078] In some cases, the fiber type and fiber ratio (e.g., the ratio of different fibers) and / or yarn type in the yarn can be varied in different areas of the upper 110 of the shoe to change the thickness and / or achieve desired fabric properties, including tactile and durability properties. For example, a first area may include a first yarn having a first fiber blend with a first ratio, and a second area may include a second yarn having a second fiber blend with a second ratio. In some cases, ply yarns and / or multiply yarns are used in the same area. Ply yarns consist of multiple yarn strands that are twisted or woven together to form a thicker yarn.

[0079] In some cases, more than one region of the upper 110 of the shoe (e.g., peripheral region 210a) comprises a thermoplastic material that is heated during manufacturing to alter the fabric properties within the region. In some cases, the yarns used in more than one region of the upper 110 of the shoe include a coating (e.g., resin) or more than one fiber formed from a thermoplastic material. In some cases, as part of the manufacturing process, a film comprising a thermoplastic material is applied to more than one region. As part of the manufacturing process, this region may be heated, for example after the upper of the shoe is constructed, to alter the fabric properties of that region. This region may be heated during manufacturing to activate (e.g., melt) the thermoplastic material to bond the thermoplastic material with other materials in the region and to alter the fabric properties of that region. In some cases, the thermoplastic material may increase the stiffness, abrasion resistance, bursting strength, and / or tensile strength of the region to which it is applied. For example, in some cases, the thermoplastic material may help resist the forces applied by the shoelaces 150 to reduce the tension in the peripheral region 210a. Examples of thermoplastic materials include ethylene vinyl acetate (EVA), polyamide, polyester, and polyurethane.

[0080] In some embodiments, the thermoplastic material, upon melting, may fill the spaces between loops within the knitted pattern of the upper part of the shoe 110. In some cases, the thermoplastic material may be coated and / or absorbed into the yarns and / or fibers forming the knitted fabric upon melting. Once the knitted fabric has cooled, the fabric properties of the area containing the thermoplastic material may differ from those of other areas of the shoe 100. For example, the thermoplastic material may reduce the bending or stretching of the knitted fabric to increase rigidity, tensile strength, and / or the bursting strength of the material. Similarly, the thermoplastic material may be bonded, coated, or otherwise formed as a barrier around the fabric and / or the yarns or fibers within the fabric to prevent abrasion or other damage. In various embodiments, the thermoplastic material may not substantially alter the appearance of the knitted fabric. For example, the thermoplastic material may become invisible once melted into the knitted fabric. The thermoplastic material may be designed to melt or flow at temperatures above normal ambient temperature but below temperatures below which other materials in the upper part of the shoe 110 would scorch or burn.

[0081] In some cases, the upper part 110 of the shoe is heated to a temperature of 220°C to 300°C to activate (e.g., melt) the thermoplastic material, for example, using a steam iron. Once the upper part 110 of the shoe has cooled to a temperature of 150°C to 220°C, the thermoplastic material will be integrated into the upper part of the shoe, and the upper part of the shoe can be heated to a temperature of 200°C to 220°C without remelting the thermoplastic material or causing further alteration to the fabric properties of the upper part of the shoe.

[0082] In some cases, the boundary between regions with different fabric properties can be: a distinct boundary, where the fabric properties change within a relatively small distance (e.g., 0.5 mm to 1 mm); or a gradual boundary, where the fabric properties change within a relatively long distance (e.g., 1 mm to 10 mm). In either case, the boundary can be visible or invisible. In some cases, different fabric properties may change within different distances, depending on the location of the boundary or other factors.

[0083] In various embodiments, the upper part 110 of the shoe may include more than one component attached to the inner layer 410 and / or the outer layer 310 and / or disposed between the layers 310, 410. The component may improve the comfort, structural stability and / or performance of the shoe 100. Figure 4B The inner layer 410 of the upper part of the shoe is shown, wherein components are attached to the inner layer 410, which defines at least a portion of the inner surface 420 of the upper part of the shoe. Components may include a heel liner 462, lateral reinforcements 464a, 464b, a midfoot liner 466a, 466b, and a toe reinforcement 468.

[0084] Heel liner 462 may extend around the rear of the inner surface 420 of the upper part of the shoe 110. Heel liner 462 may reduce abrasion of the upper part of the shoe 110 and / or provide friction to hold the wearer's foot in place during shoe wearing. In some cases, heel liner 462 extends through and covers the seam (which attaches the upper part of the shoe 110 to itself) to improve the comfort of the shoe 100. For example, heel liner 462 may prevent seam friction or other irritation to the wearer's foot (including wearers of shoe 100 without socks). Heel liner 462 may form at least a portion of the heel retainer 230 discussed herein. For example, a heel pad forming the shape of the heel retainer 230 may be disposed between the heel liner 462 and the inner layer 410, and heel liner 462 may cover the pad. The heel lining 462 may be formed of abrasion-resistant material (e.g., wool, polyester, etc.) and attached (e.g., sewn or glued) to the inner surface 420 of the upper part of the shoe 110.

[0085] Lateral reinforcement members 464a and 464b may be disposed along the sides of the upper part 110 of the shoe and may increase the rigidity of these areas of the upper part 110 of the shoe to improve the lateral stability of the wearer of the shoe 100. Lateral reinforcement members 464a and 464b may extend along the medial and lateral sides of the midfoot of the wearer of the shoe 100. Toe reinforcement member 468 may be disposed in the toe area of ​​the shoe 100 and may increase the rigidity of this area of ​​the upper part 110 of the shoe, helping to define the toe box of the shoe and / or protect the inner layer 410 from damage caused by the wearer's toes contacting the inner layer 410.

[0086] Lateral reinforcement components 464a and 464b can extend from the eyelet 140 to the periphery of the upper part 110 of the shoe and can maintain the shape and / or position of the upper part 110 of the shoe relative to other parts of the shoe 100, for example by preventing or reducing stretching of the peripheral area 210a. This can provide longitudinal support for the wearer's foot within the shoe. For example, lateral reinforcement components 464a and 464b can prevent or reduce movement of the wearer's foot toward the front or back of the shoe 100 during wear. This can promote proper running technique and / or provide additional comfort. Furthermore, this can increase the durability of the shoe 100, for example by reducing or preventing repetitive forces acting on the toe area of ​​the upper part of the shoe (which may cause fatigue breakage or fracture of the yarn forming that area).

[0087] Lateral reinforcements 464a, 464b and toe reinforcement 468 may be attached to the inner layer 410 using any suitable technique. In some cases, lateral reinforcements 464a, 464b and / or toe reinforcement 468 are laminated to the inner layer 410. Lateral reinforcements 464a, 464b and / or toe reinforcement 468 may be formed from any suitable material, including natural and synthetic materials, or combinations thereof. In some cases, lateral reinforcements 464a, 464b and / or toe reinforcement 468 are formed from microsuede or similar materials, which provide the functions discussed herein while providing a comfortable feel for the wearer, including those not wearing socks.

[0088] Midfoot linings 466a and 466b may be located in the central area of ​​the upper part 110 of the shoe and may reduce wear on the upper part 110 and / or improve the comfort of the shoe 100, including for wearers not wearing socks. Midfoot linings 466a and 466b may be located above the seams along the inner layer 410, including the seams that attach the eyelets 140 to the upper part 110 of the shoe, as described below. Figure 5A The midfoot linings 466a and 466b are attached to the inner layer 410 using any suitable technique. In some cases, the midfoot linings 466a and 466b are sewn, glued, or laminated to the inner layer 410. The midfoot linings 466a and 466b can be formed from any suitable material, including natural and synthetic materials, or combinations thereof. In some cases, the midfoot linings 466a and 466b are formed from wool, nylon, and / or other materials that provide the functions discussed herein while providing comfort to the wearer of the shoe 100, including unsocked wearers.

[0089] Figure 5A A side view of example shoe 100 is shown. Figure 5AAs shown, shoe 100 may include eyelets 140 located on the exterior of upper shoe portion 110 (e.g., along the outer surface 320 of upper shoe portion 110). In some cases, each eyelet 140 is entirely located on the exterior of upper shoe portion 110. In other words, no part of each eyelet 140 is below any part of the outer surface 320 of upper shoe portion 110. Each eyelet 140 may be attached to (e.g., sewn into) upper shoe portion 110 using thread 542, the thread 542 being wrapped around at least a portion of the eyelet and attached to at least a portion of upper shoe portion 110 by sewing or other means. In some cases, thread 542 is sewn to the outer layer of upper shoe portion 110. This allows the shoe to be manufactured in upper shoe portion 110 without forming large holes, thereby improving the comfort and durability of the shoe. Sewing eyelets 140 to shoe 100 can further improve the recyclability of the shoe by reducing the use of adhesives or other materials used for attachment that may be harmful to the environment. Alternatively or additionally, the eyelet 140 can be attached to the upper part of the shoe 110 using any suitable technique, including adhesives, heat treatment, high-frequency welding, etc.

[0090] As described above, the shoe 100 may include shoelaces 150 that pass through openings in eyelets 140 to secure the shoe 100 to the wearer's foot. The shoelaces 150 may extend through a flexible region 210b and can be connected to the upper part of the shoe 110 by passing through one or more eyelets 140 on either side of the flexible region. Thus, tightening the shoelaces 150 pulls the opposing eyelets 140 towards each other, thereby securing the upper part of the shoe 110 to the wearer's foot. Similarly, loosening the shoelaces 150 pulls the opposing eyelets 140 away from each other, thereby loosening the upper part of the shoe 110 from the wearer's foot.

[0091] The laces 150 can pull the eyelets 140 together, pressing a portion of the shoe 100 (e.g., flexible area 210b) over the wearer's foot and placing the sides of the shoe (e.g., peripheral area 210a) under pressure or tension. This not only secures the shoe 100 to the wearer's foot but also provides additional tension to the wearer's body, thus supporting the wearer's foot during activities such as walking, running, or exercising. In some cases, the flexibility of more than one layer of the upper part 110 can enhance the shoe's ability to support the wearer's foot. For example, the area above the wearer's foot may have greater flexibility, allowing the pressure from the eyelets 140 and laces 150 to be more concentrated in that area to provide enhanced support and stability.

[0092] The aperture 140 can be formed from any suitable material or combination of materials, including but not limited to polyamide, polyethylene, polypropylene, polyurethane (e.g., thermoplastic polyurethane), and polyols. In some cases, the aperture 140 may be formed at least partially from bio-based materials, including plant-based polymers, natural oil polyols, etc. In some cases, the aperture 140 may contain bio-based plastics made using castor oil. As mentioned above, the use of bio-based materials can provide environmental benefits, including reduced emissions and ecological sustainability.

[0093] In some cases, the eyelet 140 is formed of a polymeric material (e.g., nylon). The polymeric material may contain bio-based materials, such as polyols derived from castor oil. In some cases, the bio-based material may comprise more than 60% of the polymeric material. The eyelet 140 may be formed (e.g., molded, cut, etc.) into a ring shape with an opening through a center. The polymeric material may be injection molded to form the eyelet 140. Dyes may be added to the polymeric material to color the eyelet 140. As described above, the eyelet 140 can be sewn to the upper part of the shoe 110 using thread 542. This allows for slight movement of the eyelet 140 relative to the upper part of the shoe 110 and distributes force across each eyelet and the upper part of the shoe 110, thereby reducing the likelihood of the eyelet tearing or penetrating the upper part of the shoe.

[0094] As described above, the shoelace 150 extends through the eyelet 140 to secure the shoe 100 to the wearer's foot. In some cases, the shoelace 150 includes tubular external and internal padding. The shoelace 150 can be formed using any suitable material or combination of materials, including polyester, nylon, cotton, etc. In some cases, the external and / or internal padding is formed from recycled materials, such as recycled polyester from plastic bottles. As described above, using recycled materials instead of new materials can reduce waste sent to landfills and incinerators, protect natural resources, prevent pollution, and save energy associated with the collection and processing of new raw materials.

[0095] As described above, the upper part 110 of the shoe may define a collar area 210d that extends at least partially around the wearer's foot or ankle during use to help secure the shoe 100 to the wearer's foot, which can improve the fit and comfort of the shoe, for example by reducing friction, slippage, or other problems associated with poor fit. The collar area 210d may define a periphery 572 of the opening 170 leading into the cavity 160. The upper part 110 of the shoe may include an elastic material in the collar area 210d to increase the elasticity and / or flexibility of the collar area 210d. The collar area 210d may be formed of a knitted elastic polymer (e.g., elastic fiber) and one or more other materials (e.g., recycled polyester).

[0096] The collar area 210d may be formed at least partially by a ribbed knit pattern that defines a set of ribs along one or more surfaces of the collar area. Figure 5B It shows Figure 5A Detailed view of section 1-1. (See also...) Figure 5B As shown, the shoe collar area 210d may include a rib 580 and a recess 582 between the ribs. The rib 580 may protrude relative to the recess 582. Similarly, the recess 582 may be recessed relative to the rib 580. In some cases, such as Figure 5B As shown, rib 580 extends from the boundary 518 between another region 510 of the upper part of the shoe 110 (e.g., peripheral region 210a, flexible region 210b, etc.) and the collar region 210d to the periphery 572 of the opening 170. In some cases, some or all of the ribs 580 extend from the boundary 518 to the periphery 572, but do not reach the periphery. In some cases, some ribs 580 extend all the way to the periphery 572.

[0097] In various embodiments, the orientation of the rib 580 (e.g., extending from the boundary 518 towards the periphery 572) can provide beneficial effects, including increasing the comfort of the shoe 100 on the wearer's foot. For example, the rib 580 allows for a lateral direction perpendicular to the rib direction (e.g., relative to the rib direction). Figure 5B Typically, the stretch is on the left and right sides. Lateral stretching of the rib 580 prevents the shoe collar area 210d from being too tight on the wearer's foot. The width of the shoe collar area 210d (e.g., the length of the rib 580) is sufficient to allow the shoe collar area to remain snug to secure the shoe 100 to the wearer's foot. Lateral stretching of the rib 580 can provide or enhance the ability to adjust the size of the opening 170 to accommodate different foot sizes (e.g., feet with different widths). Furthermore, in some cases, the rib 580 is substantially parallel to most of the blood vessels in the portion of the wearer's foot covered by the shoe collar area 210d, which reduces or prevents the rib 580 from crossing blood vessels and potentially inhibiting blood flow within them. In addition to the lateral direction perpendicular to the rib direction, the rib 580 can allow stretching in other directions. For example, the rib 580 can allow stretching in directions parallel to the rib direction (e.g., relative to the rib direction). Figure 5B (Usually on the top and bottom). This can provide many excellent effects, including increased comfort and support for the shoe.

[0098] In various embodiments, the width of the collar area 210d (e.g., the distance from the perimeter 572 to the boundary 518) contributes to the comfort of the shoe 100. In some cases, the width of the collar area 210d is greater than about 1 cm. In some cases, the width of the collar area 210d is greater than about 2 cm. Similar to rib 580, the width of the collar area can provide beneficial effects, including increasing the comfort of the shoe 100 on the wearer's foot. For example, the collar area 210d can apply sufficient elasticity to the wearer's foot to secure the shoe 100 to the wearer's foot, while the width of the collar area distributes this elasticity over a sufficiently large area to avoid causing discomfort to the wearer, such as deforming the wearer's skin or inhibiting blood circulation.

[0099] In some cases, ribs 580 and recesses 582 are formed from knitted fibers. In various embodiments, ribs 580 and recesses 582 may be formed from knitted patterns, such as 1x1 rib patterns, 2x2 rib patterns, etc. Figure 5B An example shape and arrangement of rib 580 and recess 582 are shown. In various embodiments, the specific shape and details of rib 580 and recess 582 may vary. Figure 5B The differences are shown in the illustration. For example, due to being formed from knitted fibers, ribs 580 and / or recesses 582 may include variations in texture or shape. In some cases, the collar area 210d may include different or additional features, such as indentations.

[0100] As described above, the shoe 100 may include a heel retainer 230 to improve the comfort and performance of the shoe. Figure 6 A partial cross-sectional view of an example shoe 100 is shown, including the heel retainer 230. (See attached image.) Figure 6 As shown, the heel retainer 230 may be disposed along or define the inner surface of the upper part 110 of the shoe and may extend into the cavity 160. The heel retainer 230 may define a recess 232 between the heel retainer 230 and the insole 220. The recess and the heel retainer 230 may conform to the shape of the wearer's foot (e.g., the wearer's heel and / or calcaneus) to secure the wearer's foot in the cavity 160 and / or minimize sliding or friction of the wearer's foot on the inner surface of the cavity 160. In other words, the wearer's heel may conform to the underside of the heel retainer 230 such that when the wearer runs or engages in strenuous exercise, the heel retainer holds the heel in place or reduces heel movement.

[0101] The heel support 230 may be formed at least partially by providing a bio-based and / or synthetic padding material between layers and / or components of the upper part 110 of the shoe. In some cases, the padding for the heel support 230 may include polyurethane foam. In some cases, the heel support 230 is formed at least partially by providing a bio-based and / or synthetic padding material between the upper part 110 of the shoe and the lining of the shoe 100. The heel support 230 may be formed at least partially by one or more layers of the upper part 110 of the shoe or the lining of the shoe 100, having an increased thickness compared to other areas of the upper part 110 of the shoe or the lining.

[0102] The heel stabilizer 230 can work in conjunction with one or more other components of the shoe 100 (including the collar area 210d) to improve the shoe's performance and comfort. The collar area 210d can apply elasticity to pull the heel stabilizer 230 toward the wearer's foot for more effective securing of the shoe 100 to the wearer's foot. The heel stabilizer 230 can increase the comfort of the shoe 100 by providing padding between the collar area 210d and sensitive parts of the wearer's foot or leg (including the area around the Achilles tendon). This can avoid or reduce discomfort to the wearer caused by the elasticity applied to the wearer by the collar area 210d.

[0103] In various embodiments, the shoe 100 can be assembled by attaching eyelets 140 to the upper part 110 and forming the upper part 110 into the desired three-dimensional shape, for example, using a mold. The upper part 110 can be attached to itself at the seams to maintain the shape of the upper part 110 and construct the shoe 100. Figure 7 A rear view of an example shoe 100 is shown, illustrating the upper part 110 being attached to itself at seam 710. The upper part 110 can be attached to itself using any suitable fastening technique, including adhesives, stitching, bonding, etc.

[0104] The sole 120 may define more than one contact surface, which is suitable for contacting the ground or other surfaces when the footwear is worn. Figure 8 A bottom view of an example shoe 100 is shown, illustrating example contact surfaces 890a-c on the sole 120. Contact surfaces 890a-c may include more than one pattern or feature to improve the grip of the shoe 100. In some cases, contact surfaces 890a-c include indentations and / or protrusions that define patterns or features for improving grip.

[0105] The sole 120 may include different portions with different properties and characteristics, including grip and flexibility. The portion of the sole 120 defining the contact surface 890a may be more flexible than one or more other portions of the sole to allow the sole to flex or otherwise deform as the wearer walks or otherwise moves. The portions of the sole 120 defining contact surfaces 890b and 890c may be formed of a single material and / or have different textures that provide greater grip than other portions of the sole 120.

[0106] In various embodiments, the sole 120 can be formed from any suitable material or combination of materials, including polyamide, polyethylene, polypropylene, polyurethane (e.g., thermoplastic polyurethane), polyols, natural rubber, and synthetic rubber. In some cases, the sole 120 is at least partially formed from a bio-based material (e.g., castor oil). In some cases, the sole 120 comprises both natural and synthetic rubber. As mentioned above, the use of bio-based materials can provide environmental benefits, including reduced emissions and ecological sustainability.

[0107] As described above, many of the embodiments described herein relate to shoes with a knitted upper. However, it is understood that this is merely an example; other configurations, implementations, and constructions can be conceived based on the various principles and methods of operation described with reference to the above embodiments—and their reasonable alternatives.

[0108] It is understood that although many implementations have been disclosed above, the operations and steps presented with respect to the methods and techniques described herein are intended to be exemplary and therefore not exhaustive. It should also be understood that particular implementations may require or expect alternating sequences of steps or fewer or additional operations.

[0109] As used herein, the phrase “at least one” preceding a series of items, and the terms “and” or “or” separating any items, modify the list as a whole, not each member of the list. The phrase “at least one” does not require selection of at least one from each of the listed items; rather, the phrase allows for the meaning of at least one of any item, and / or at least one of any combination of items, and / or at least one of each item. For example, the phrases “at least one of A, B, and C” or “at least one of A, B, or C” each refer to only A, only B, or only C; any combination of A, B, and C; and / or more than one of each of A, B, and C. Similarly, it should be understood that the order of elements presented in the combined or non-combined lists provided herein should not be construed as limiting the invention to the order presented.

[0110] Although the foregoing disclosure has been described with reference to various exemplary embodiments and implementations, it should be understood that the various features, aspects, and functions described in one or more individual embodiments are not limited to their applicability to the specific embodiments in which they are described, but can be applied individually or in various combinations to one or more embodiments of the invention, whether or not such embodiments are described and whether or not such features are presented as part of the described embodiments. Therefore, the breadth and scope of the invention should not be limited to any of the foregoing exemplary embodiments, but is defined by the claims set forth herein.

Claims

1. A shoe, said shoe comprising: The sole defines a contact surface and a top surface opposite the contact surface; A shoe upper portion, attached to the top surface of the sole and cooperating with one or more other components of the shoe to define a cavity, the shoe upper portion having a continuous knitted fabric, the shoe upper portion comprising: A shoe collar area, the shoe collar area at least partially surrounding an opening into the cavity and defining at least a portion of a first periphery of the opening, the shoe collar area having a first elasticity, the shoe collar area being at least partially defined by a first knitted pattern of a first yarn mixture; A flexible region having a second elasticity, the flexible region being at least partially defined by a second knitted pattern of a second yarn mixture, the flexible region and the shoe collar region being configured to stretch to increase the size of the opening; A toe region, at least partially defined by a third knitted pattern of a third yarn blend, wherein the elasticity of the toe region is less than that of the first elasticity and the second elasticity; and A peripheral region, which defines at least a portion of a second perimeter at the point where the upper part of the shoe and the sole meet and at least partially surrounds the collar area, the flexible area and the toe area, the peripheral region having a third elasticity, which is at least partially derived from a fourth knitted pattern of a fourth yarn blend, the third elasticity being less than the first elasticity and the second elasticity; in: The flexible region is configured to pull the surrounding region toward the wearer's foot to provide enhanced structural stability; The thickness of the peripheral area is greater than the thickness of the shoe collar area, the thickness of the flexible area, and the thickness of the toe area; The continuous knitted fabric is formed on the outer surface of the upper part of the shoe defined by the second knitted pattern, the third knitted pattern, and the fourth knitted pattern, and the continuous knitted fabric is seamless between the toe region and the surrounding portion of the flexible region and the peripheral region; The continuous knitted fabric contains eucalyptus fibers; The second yarn blend, the third yarn blend, and the fourth yarn blend each comprise yarns containing 60% to 80% eucalyptus fiber; and The flexible area, shoelaces, first set of eyelets, and second set of eyelets are configured to work together to secure the shoe around the wearer's foot.

2. The shoe according to claim 1, wherein: The shoes also include: Insole, the insole being disposed within the cavity; and A heel retainer is provided along the inner surface of the upper part of the shoe and defines a recess between the heel retainer and the insole; and The heel retainer and the collar area are configured to secure the wearer's foot within the cavity.

3. The shoe according to claim 1, wherein, The first group of eyelets and the second group of eyelets each include one or more eyelets, and the one or more eyelets are disposed on the outer side of the upper part of the shoe; and The shoelaces extend through one or more eyelets in each of the first set of eyelets and the second set of eyelets.

4. The shoe according to claim 3, wherein, The first set of holes is disposed along the first side of the flexible region; and The second set of holes is arranged along the second side of the flexible region opposite to the first side.

5. The shoe according to claim 1, wherein: The upper part of the shoe also includes a reinforcing member disposed along the inner surface of the peripheral region and at least partially surrounding the toe region.

6. The shoe according to claim 1, wherein: The continuous knitted fabric includes: An outer layer that defines at least a portion of the outer surface of the upper part of the shoe; An inner layer that defines at least a portion of the inner surface of the upper part of the shoe.

7. The shoe according to claim 6, wherein, The outer layer and the inner layer each extend along the entire upper part of the shoe.

8. The shoe according to claim 1, wherein, The surrounding area also includes a thermoplastic material bonded to the eucalyptus fibers; and The toe area does not contain thermoplastic materials.

9. The shoe according to claim 8, wherein, The flexible region also includes elastic fibers.

10. A shoe, said shoe comprising: The sole of the shoe defines the contact area with the ground; The upper part of the knitted shoe is attached to the sole and defines a cavity, the upper part of the knitted shoe includes: A shoe collar area, the shoe collar area surrounding an opening into the cavity and defining at least a portion of the periphery of the opening, the shoe collar area having a first elasticity, the shoe collar area being at least partially defined by a first knitted pattern of a first yarn mixture comprising an elastic material; A flexible region having a second elasticity, the flexible region being at least partially defined by a second knitted pattern of a second yarn mixture; A toe region, at least partially defined by a third knitted pattern of a third yarn blend, wherein the elasticity of the toe region is less than that of the first elasticity and the second elasticity; and A peripheral region, having a third elasticity, is at least partially defined by a fourth knitted pattern of a fourth yarn blend, the third elasticity being less than the first and second elasticities, wherein: The thickness of the peripheral area is greater than the thickness of the shoe collar area, the thickness of the flexible area, and the thickness of the toe area; A heel lining that extends along the rear portion of the inner surface of the upper part of the knitted shoe; and A heel retainer, defined by a first portion of a heel liner and a heel pad disposed between the first portion of the heel liner and the inner surface of the upper part of the knitted shoe, the heel retainer being configured to conform to the wearer and extend into the cavity, a second portion of the heel liner being disposed below the first portion of the heel liner, and the thickness of the shoe at the heel retainer being greater than the thickness of the second portion of the heel liner; in: The shoe collar area is configured to apply elasticity, which pulls the heel anchor towards the wearer to secure the shoe to the wearer; and The upper part of the knitted shoe is knitted as a single piece, and the outer surface of the upper part of the knitted shoe is defined by the second knitted pattern, the third knitted pattern, and the fourth knitted pattern. The second knitted pattern, the third knitted pattern, and the fourth knitted pattern are seamless between the toe region and the surrounding portion of the flexible region and the peripheral region. The second yarn blend, the third yarn blend, and the fourth yarn blend each have yarn containing 60% to 80% eucalyptus fiber. The flexible area, laces, and eyelet group are configured to work together to secure the shoe around the wearer's foot.

11. The shoe according to claim 10, wherein: The shoe also includes an insole disposed in the cavity; The second part of the heel lining is disposed between the heel fixing part and the insole; The heel support and the second portion of the heel lining cooperate to define the recess below the heel support and above the insole; and The recess is configured to fit the wearer.

12. The shoe according to claim 10, wherein: The upper part of the knitted shoe also includes: The surrounding area, which at least partially surrounds the shoe collar area, and the fourth yarn mixture contains no elastic material; and A flexible region, at least partially surrounded by the peripheral region, wherein the second yarn mixture comprises an elastic material; and The toe region is surrounded by the peripheral region and the flexible region.

13. The shoe according to claim 12, wherein, The first knitted pattern includes a set of ribs, each of which extends from the periphery of the opening to at least one of a first boundary or a second boundary, the first boundary being located between the shoe collar area and the peripheral area, and the second boundary being located between the shoe collar area and the flexible area.

14. The shoe according to claim 12, wherein: The upper part of the knitted shoe defines the boundary between the collar area and the surrounding area; and The distance between the periphery of the opening and the boundary is greater than 1 cm.

15. The shoe according to claim 14, wherein: The upper part of the knitted shoe includes: Outer layer, the outer layer defining a first surface on the upper part of the knitted shoe; and The inner layer defines a second surface in the upper part of the knitted shoe that is opposite to the first surface.

16. A shoe, said shoe comprising: The sole comprises a bio-based foam material; An upper part of the shoe, which is attached to the sole and at least partially defines a cavity, the upper part of the shoe comprising: A toe region having a first rigidity, the toe region being at least partially defined by a first knitted pattern of a first yarn mixture comprising eucalyptus fibers; A peripheral region extending around at least a portion of the periphery of the upper part of the shoe at the point where the upper part and the sole meet, the peripheral region having a second rigidity, and the peripheral region being at least partially defined by a second knitted pattern of a second yarn mixture, wherein: The second rigidity is greater than the first rigidity; The second yarn blend comprises eucalyptus fibers; and A flexible region, at least partially surrounded by the peripheral region, the flexible region and the peripheral region cooperatively surrounding the toe region, the flexible region having a third rigidity, the flexible region being at least partially defined by a third knitted pattern of a third yarn mixture comprising eucalyptus fibers and an elastic material, wherein: The third rigidity is less than the first rigidity and the second rigidity; and The thickness of the flexible region is less than the thickness of the surrounding region; The first set of eyelets is disposed on the first side of the flexible area along the outer surface of the upper part of the shoe; A second set of eyelets, the second set of eyelets being disposed along the outer surface of the upper part of the shoe on a second side opposite to the first side in the flexible region; and Shoelaces that extend through one or more eyelets of the first set of eyelets and one or more eyelets of the second set of eyelets; in: The outer surface of the upper part of the shoe is defined by a first knitted pattern, a second knitted pattern, and a third knitted pattern, forming a continuous knitted fabric. This continuous knitted fabric is seamless between the toe region and the surrounding portion of the flexible region and the peripheral region. The first yarn mixture, the second yarn mixture, and the third yarn mixture each contain yarns containing 60% to 80% eucalyptus fiber. The flexible area, the shoelaces, the first set of eyelets, and the second set of eyelets are configured to work together to secure the shoe around the wearer's foot.

17. The shoe according to claim 16, wherein, The second yarn mixture does not contain elastic materials; and The density of the first knitted pattern is less than the density of the second knitted pattern.

18. The shoe according to claim 16, wherein, The upper part of the shoe also includes a collar area surrounding an opening into the cavity. The collar area contains an elastic material and is configured to work in conjunction with the flexible area, the laces, the first set of eyelets, and the second set of eyelets to secure the shoe around the wearer's foot.

19. The shoe according to claim 16, wherein, The shoe also includes a heel retainer that is disposed along the inner surface of the upper part of the shoe and extends into the cavity. The heel retainer is configured to work in conjunction with the flexible area, the shoelaces, the first set of eyelets, and the second set of eyelets to secure the shoe around the wearer's foot.

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