CROSS-REFERENCE TO RELATED APPLICATIONSThis application is a continuation of U.S. patent application Ser. No. 16/948,481, filed Sep. 21, 2020, which is a continuation of U.S. patent application Ser. No. 14/324,793, filed Jul. 7, 2014, now U.S. Pat. No. 10,813,404, which claims the benefit of U.S. Provisional Application No. 61/843,844, filed Jul. 8, 2013, each of which are incorporated herein by reference.
TECHNICAL FIELDEmbodiments of the present disclosure relate to dance shoes.
BACKGROUNDAthletic shoes of all types are subject to great amounts of stress through repeated, cyclical loading caused by walking, running, and other activities. Dance shoes, however, are subject to unique stress combinations due to the repetitive, high impact levels associated with dancing. Male ballet dancers in particular experience an incredible amount of high impact loads since a male ballet dancer's routine involves a disproportionate amount of jumping on a hard surface which can be taxing on the dancer's body.
Many conventional dance shoes generally sacrifice support and/or shock absorption to provide a low-weight, low-profile shoe. For example, conventional dance shoes are made of a thin piece of cloth with little or no absorptive potential. Accordingly, current dance shoe materials generally cannot provide a range of response characteristics to different levels of pressure and impact. Conventional dance shoes may be aesthetically pleasing but are not properly calibrated for higher-impact levels. Although a stiffer, thicker shoe or insert may provide proper resiliency and performance for running or other high-energy activities, such a heavy (relatively), large-profile shoe is generally not well suited for ballet dancing (e.g., does not accentuate the contour and aesthetics of the foot, cumbersome, not-flexible enough, etc.). Accordingly, there is a need for a dance shoe assembly that can meet the needs of repetitious, high-intensity activities, such as jumping, without sacrificing comfort or performance.
BRIEF DESCRIPTION OF THE DRAWINGSFIG.1A is an isometric elevation view of a dance shoe configured in accordance with embodiments of the present technology.
FIG.1B is a bottom view of the dance shoe ofFIG.1A configured in accordance with embodiments of the present technology.
FIG.1C is a side elevation view of the dance shoe ofFIG.1A configured in accordance with embodiments of the present technology.
FIG.1D is a cross-sectional view of a portion of a front sole of the dance shoe ofFIG.1A configured in accordance with embodiments of the present technology.
FIGS.2A-2C are schematic illustrations of various embodiments of a split front traction pad configured in accordance with the present technology.
FIG.3A is an isometric elevation view of the heel member of the dance shoe shown inFIGS.1A-1D configured in accordance with the present technology.
FIG.3B is an isometric elevation view of the shock-absorbing member of the heel member shown inFIG.3A configured in accordance with the present technology.
FIG.3C is an isometric elevation view of the support member of the heel member shown inFIG.3A configured in accordance with the present technology.
FIG.4A is an isometric elevation view of another embodiment of a heel member configured in accordance with the present technology.
FIG.4B is a top view of the heel member ofFIG.4A configured in accordance with the present technology.
FIG.4C is a schematic illustration of the layers comprising the heel member ofFIG.4A configured in accordance with the present technology.
DETAILED DESCRIPTIONAspects of the present disclosure are directed generally toward dance shoes. As disclosed herein, a dance shoe, such as a ballet shoe, can include a flexible shoe body having a forefoot portion, a heel portion opposite the forefoot portion, and a midfoot portion between the heel portion and the forefoot portion. The dance shoe further includes an integrated heel member securely attached to the heel portion of the flexibly shoe body. The heel member includes a support member configured to receive a shock-absorbing member, and a top portion of the shock-absorbing member is softer than a bottom portion of the shock-absorbing member.
Various embodiments of the disclosure will now be described. The following description provides specific details for a thorough understanding and enabling description of these embodiments. One skilled in the art will understand, however, that the disclosure may be practiced without many of these details. Additionally, some well-known structures or functions may not be shown or described in detail, so as to avoid unnecessarily obscuring the relevant description of the various embodiments.
The terminology used in the description presented below is intended to be interpreted in its broadest reasonable manner, even though it is being used in conjunction with a detailed description of certain specific embodiments of the disclosure. Certain terms may even be emphasized below; however, any terminology intended to be interpreted in any restricted manner will be overtly and specifically defined as such in this Detailed Description section.
References throughout the specification to “one embodiment” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment and included in at least one embodiment of the present disclosure. Thus, the appearances of the phrase “in one embodiment” or “in an embodiment” in various places throughout the specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
FIG.1A is an isometric view of adance shoe100 configured in accordance with various embodiments of the present technology.FIGS.1B and1C are bottom and side views, respectively, of thedance shoe100 shown inFIG.1A. Referring toFIGS.1A-1C together, thedance shoe100 includes aflexible shoe body102 that wraps fully underneath the foot. The flexible shoe body has a top portion104 (FIGS.1A and1C) and a bottom portion106 (FIG.1B). Theflexible shoe body102 can be made of canvas, leather, nylon, cotton and/or other suitable materials. In some embodiments theflexible shoe body102 can be made of a single piece of material, and in other embodiments theflexible shoe body102 can be made of multiple pieces of the same or different materials sewn together. Additionally, in some embodiments theflexible shoe body102 can be a single layer of material, and in other embodiments theflexible shoe body102 can include two or more layers of material. For example, in some embodiments theflexible shoe body102 can comprise an outer layer and an inner layer. The outer layer can define the exterior surface of thedance shoe100 while the inner layer defines the inner surface of thedance shoe100 that contacts the dancer's foot. In some embodiments, theflexible shoe body102 can have one or more portions having two or more layers and one or more portions having a single layer.
Theflexible shoe body102 further includes aforefoot portion108 towards the front of thedance shoe100, aheel portion112 towards the rear of thedance shoe100, and amidfoot portion110 in between. In some embodiments, themidfoot portion110 can include amidfoot section140 defined by a single piece of material separate from the piece of material comprising the rest of theflexible shoe body102. Theflexible shoe body102 can connect to themidfoot section140 by afirst seam144aand asecond seam144b. Themidfoot section140 allows greater flexibility of thedance shoe100 between theforefoot portion108 and theheel portion112, especially throughout themidfoot portion110.
Referring still toFIG.1A, thetop portion104 of theflexible shoe body102 can include acircular sleeve114 that defines an opening in theflexible shoe body102 through which the foot is received. One or more drawstrings, elastic cords, and/or othersuitable fastening devices116 may pass through thesleeve114 to secure thedance shoe100 to the dancer's foot. In some embodiments, thedance shoe100 can additionally or alternatively include one or more elastic straps118 (shown inFIG.1A in a relaxed position) fixedly attached to theflexible shoe body102 and configured to engage a dancer's leg, ankle and/or foot. At least a portion of thecircular sleeve114 can include padding, such as at the front and/or rear surface of thesleeve114, to provide increased comfort between the portion of the dancer's leg, ankle and/or foot that is in contact with theflexible shoe body102 at thesleeve114.
As best shown inFIGS.1A and1C, theforefoot portion108 of theflexible shoe body102 includes atoe portion120 that encases the dancer's toes and avamp portion122 that extends rearwardly from a top region of thetoe portion120 to a front edge of thecircular sleeve114. As best shown inFIG.1B, thetoe portion120 includes abottom region126 disposed below the toes of the dancer. Theflexible shoe body102 can have one ormore pleats134 at thebottom region126 of thetoe portion120. Pleats provide the advantage of additional flexibility, which is especially important in theforefoot portion108.
Thedance shoe100 may further include one or more flexible traction pads128 disposed at thebottom portion106 of theflexible shoe body102 to provide additional support and/or cushioning to the dancer's foot, especially at high-intensity impact points (e.g., the ball and heel of the foot). The traction pad(s)128 may individually comprise one or more layers. The traction pad(s)128 and/or traction pad layer(s) may be stitched, glued or otherwise attached to a bottom surface of theflexible shoe body102. To provide better traction for the dancer, the traction pad(s)128 can be textured with one or more grooves and/or protrusions along a bottom surface of the traction pad(s). The traction pad(s)128 can be made of canvas, leather, rubber, neoprene and/or any other material that increases frictional forces between the traction pad(s)128 and the ground.
In the illustrated embodiments, thedance shoe100 has afront traction pad130 and a rear traction pad132 such that themidfoot portion110 of thedance shoe100 is defined by the more flexible material of theflexible shoe body102. Having separate front andrear traction pads130,132 allows thedance shoe100 to flex at the midfoot portion so as to facilitate maintaining close proximity between a bottom region of themidfoot portion110 and the dancer's foot, particularly when the foot is flexed. In other embodiments, thedance shoe100 may have only afront traction pad130, only a rear traction pad132, or in some embodiments, thedance shoe100 may not include any traction pads. Thefront traction pad130 and rear traction pad132 can be the same or different shapes. The front andrear traction pads130,132 can also provide increased cushioning and/or shock-absorption for the dancer by selected traction pad thickness, layering, and/or material composition. For example, the rear traction pad132 can have a thickness of generally between about 1 mm and 4 mm (e.g., about 2 mm, about 3 mm), while thefront traction pad130 can generally have a thickness less than 1 mm. As such, when thedance shoe100 is on the dancer's foot but not under the weight of the dancer, the bottom layer of the dance shoe100 (e.g., the bottom portion of theflexible shoe body102 and/or the traction pad128) has a thickness of less than or equal to 4 mm (e.g., less than 3 mm, less than 2 mm, 0.5 mm, etc.).
FIGS.2A-2C illustrate various embodiments of afront traction pad130 having a split design (e.g., at least two separate and distinct traction pads at the forefoot). A split design at thefront traction pad130 is configured to define a flex groove between two spaced apart sole portions that allows greater flexibility along the ball of the foot during use without sacrificing the support and cushioning provided by a traction pad. Also, the split design facilitates bending of the traction pad so that the traction pad and/or dance shoe remains in close proximity to and follows the contours of the dancer's foot. In particular, the split front traction pad allows the dancer's toes to grab the front of thedance shoe100 during a toe point and bend the front traction pad to match the curvature of the foot. Because of the thin profile of thedance shoe100, an observer can aesthetically appreciate the line created by the dancer's leg and bent foot. Such aesthetic requirements are not considered in the design and/or manufacture of conventional athletic shoes.
FIG.2A shows one embodiment of a splitfront traction pad300 that has a curved, “jelly-bean” shapedfront section302 and arear section304. Thefront section302 can be positioned along theforefoot portion108 such that, when worn, thefront section302 aligns with the dancer's toes. Therear section304 can be spaced apart from thefront section302 and positioned along theforefoot portion108, such that, when worn, therear section304 aligns with the ball of the dancer's foot and at least a portion of the dancer's midfoot. Therear section304 can have a curved, tear-drop shape that narrows toward a rear portion of thedance shoe100.FIG.2B shows another embodiment of splitfront traction pad310. Thefront section312 of the embodiment shown inFIG.2B is generally similar to thefront section302 shown inFIG.2A. However, thefront traction pad310 ofFIG.2B has a more circularrear section314 that is positioned to align more precisely with the ball of the dancer's foot without having additional material extending toward the midfoot.FIG.2C shows yet another embodiment of a splitfront traction pad320. Thefront section322 of the embodiment shown inFIG.2C is generally similar to thefront section302 shown inFIG.2A. However, therear section324 of the embodiment shown inFIG.2C has more of a generally square shape and is configured to cover the ball of the dancer's foot, as well as a front portion of the dancer's midfoot. As shown inFIGS.2A-2C, the front and/or rear sections can have a generally rounded contour so that the edges of the sections are not uncomfortable for the dancer when thedance shoe100 is bent around themidfoot portion110.
Referring back to the side cross-sectional view ofFIG.1D, thebottom portion106 of the illustrateddance shoe100 includes one or moreinternal metatarsal pads146 on the interior of thedance shoe100 that are aligned with one or more of thefront traction pads130. In the embodiment shown inFIG.1D, themetatarsal pad146 is a split-pad design that includes afront pad147 and arear pad149 that are aligned with thefront section302 andrear section304, respectively, of thefront traction pads130 such that a portion of thebottom portion106 of theflexible shoe body102 is sandwiched between the front and/orrear sections302,304 of thefront traction pad130 and the front and/orrear metatarsal pads147,179. In other embodiments, themetatarsal pad146 can comprise a single pad regardless of the configuration of the traction pad128. For example, in such embodiments, themetatarsal pad146 can be aligned with the first traction pad, the second traction pad, and/or cover both the first and second traction pads. Themetatarsal pads146 are not visible while the dancer is wearing the dance shoes and are configured to provide an additional layer of cushioning and support within the shoe, under the metatarsal region of the foot, while the dance shoe maintains a sleek, contoured, fitted external profile on the dancer's foot. Themetatarsal pads146 can be made of foam, neoprene or other suitable shock-absorbing materials. In some embodiments, themetatarsal pads146 can be stacked on or fixedly attached to one or more of the front traction pad(s)130. In such embodiments, thebottom portion106 of theflexible shoe body102 can have a hole, and theflexible shoe body102 is stitched around the periphery of the stacked front traction pad(s)130 andmetatarsal pads146.
FIG.3A is an isolated, isometric elevation view of aheel member400 configured in accordance with the present technology. Theheel member400 generally has a “cupped” shape and is fixedly attached at theheel portion112 of thedance shoe100 to define a close fitting heel cup that receives and engages the heel of the dancer's foot. Theheel member400 is fixedly attached to theflexible shoe body102 and/or one or more layers of theflexible shoe body102 via stitching, adhesive, or other suitable fixation methods and/or devices. In another embodiment, theheel member400 may be removable from thedance shoe100. Theheel member400 may define an inner surface of the shoe at theheel portion112, or in some embodiments, theheel member400 can be sandwiched between two or more layers of theflexible shoe body102 such that an inner layer of theflexible shoe body102 separates the dancer's foot from theheel member400.
As shown inFIGS.3B and3C, theheel member400 includes a shock-absorbingmember404 and a relativelystiff support member402 configured to receive the shock-absorbingmember404. The shock-absorbingmember404 may be removable from thesupport member402, or in some embodiments, the shock-absorbingmember404 may be fixedly attached to thesupport member402 via stitching, adhesive, dip-coating, spray-on, molding, or other suitable fixation methods and/or devices.
Thesupport member402 has abottom region406 and atop region408 extending upwardly from the periphery of thebottom region406, as shown inFIG.3C. Thebottom region406 of thesupport member402 is generally flat and is configured to receive the shock-absorbingmember404. Thetop region408 can have arear wall410 that provides rear support to the heel, andlateral walls412aand412bthat provide lateral support and stability to the foot and/or ankle of the dancer. Thesupport member402 can be made from plastic, metal, fiberboard, or other suitable materials.
As best shown inFIG.3B, the shock-absorbingmember404 has abottom region414 configured to receive (directly or indirectly) the bottom portion of the heel of the dancer's foot, and aninclined heel wrap416 that provides additional stability and support to the dancer's foot. In other embodiments, the shock-absorbingmember404 does not have aheel wrap416. Theheel wrap416 of the shock-absorbingmember404 can linearly, exponentially or otherwise increase in height towards the periphery of the shock-absorbingmember404. Theheel wrap416 can have arear wall420 andlateral sidewalls418aand418bthat provide additional support and/or stability to the dancer's foot. The shock-absorbingmember404 may be made from polyurethane, memory foam, foam, slow recovery foam, poron, Spenco “A,” gels, and other suitable materials.
Different regions of the shock-absorbingmember404 can have different indentation force deflection (“IFD”) values. IFD values correspond to the softness and/or firmness of the shock-absorbingmember404 and/or regions of the shock-absorbingmember404. The softer and/or less firm the region of the shock-absorbingmember404, the lower the IFD value. In some embodiments, the shock-absorbingmember404 can have increasing IFD values as the height H2 of the shock-absorbingmember404 decreases. In other words, a top portion of the shock-absorbing member is softer and/or less firm than a bottom portion of the shock-absorbingmember404. Additionally, in some embodiments thebottom region414 of the shock-absorbingmember404 can be generally more firm (e.g., higher IFD values) than theheel wrap416. That way, theheel wrap416 provides additional cushioning and/or shock-absorption, while thebottom region414 provides additional support and stability (but also provides additional cushioning and/or shock-absorption).
FIGS.4A and4B are isometric and top views, respectively, of aheel member500 having a multi-layered shock-absorbingmember504.FIG.4C is a break-out illustration of a side view of theheel member500 shown inFIGS.4A and5B. Referring toFIGS.4A-4C together, the shock-absorbingmember504 may comprise three adjacent layers: atop layer506 having a top layer thickness TT and a top layer IFD value, anintermediate layer508 having an intermediate layer thickness IT and an intermediate layer IFD value, and abottom layer510 having a bottom layer thickness BT and a bottom layer IFD value. In other embodiments, the shock-absorbingmember504 can have less than three layers (e.g., not layered, two layers, etc.) or more than three layers (e.g., four layers, five layers, etc.). As used herein, “thickness” refers to the thickness of the layer when not subject to external forces, such as the weight of the dancer.
In some embodiments, the layers may individually have different and/or the same IFD values so that a top portion of the shock-absorbingmember504 is softer and/or less firm than a bottom portion of the shock-absorbingmember504. For example, thetop layer506 can have a top layer IFD value that is less than an intermediate layer IFD value, and the intermediate layer IFD value can have a smaller IFD value than the bottom layer IFD value. In another embodiment, thetop layer506 can have a top layer IFD value that is the same as the intermediate layer IFD value, and the intermediate layer IFD value can have a smaller IFD value than the bottom layer IFD value. In particular embodiments, thetop layer506 can be made of memory foam, while theintermediate layer508 andbottom layer510 can be made of slow recovery foam of varying thicknesses.
In some embodiments, the layers may individually have different thicknesses. For example, the bottom layer thickness BT can be greater than the intermediate layer thickness IT, and the intermediate layer thickness IT can be greater than the top layer thickness TT. In some embodiments, the layers may individually have different widths and/or shapes. For example, as shown inFIGS.4A and4C, theintermediate layer508 can be wider than thetop layer506 and also approximately the same width as thebottom layer510.
The above-detailed embodiments of the disclosure are not intended to be exhaustive or to limit the disclosure to the precise form disclosed above. Specific embodiments of, and examples for, the disclosure are described above for illustrative purposes, but those skilled in the relevant art will recognize that various equivalent modifications are possible within the scope of the disclosure. For example, thedance shoe100 of the present technology can include other dance shoes besides ballet shoes, such as a jazz dance shoe or a ballet boot. The various aspects of embodiments described herein can be combined and/or eliminated to provide further embodiments. Although advantages associated with certain embodiments of the disclosure have been described in the context of those embodiments, other embodiments may also exhibit such advantages. Additionally, not all embodiments need necessarily exhibit such advantages to fall within the scope of the disclosure.
Unless the context clearly requires otherwise, throughout the description and the claims, the words “comprise,” “comprising,” and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense, i.e., in a sense of “including, but not limited to.” Additionally, the words “herein,” “above,” “below,” and words of similar import, when used in this application, shall refer to this application as a whole and not to any particular portions of this application. Use of the word “or” in reference to a list of items is intended to cover a) any of the items in the list, b) all of the items in the list, and c) any combination of the items in the list.
In general, the terms used in the following claims should not be construed to limit the invention to the specific embodiments disclosed in the specification unless the above-detailed description explicitly defines such terms. In addition, the inventors contemplate various aspects of the disclosure in any number of claim forms. Accordingly, the inventors reserve the right to add claims after filing the application to pursue such additional claim forms for other aspects of the disclosure.