Dual layer sole system with auxetic structure
AssigneeNIKE, Inc.
InventorElizabeth Langvin
Life of this patent
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Abstract
An article with a sole structure including a first layer and a second layer are disclosed. The first layer includes a set of apertures arranged in an auxetic configuration that permit the first layer to exhibit a first auxetic behavior. The second layer includes a set of projections arranged in an auxetic configuration that permit the second layer to exhibit a second auxetic behavior. The first layer and the second layer may be joined together in a manner that allows the first auxetic behavior to occur independently of the second auxetic behavior.
Claims18
A sole system with an article of footwear, comprising:
- an upper;
- the sole system comprising a first auxetic layer and a second auxetic layer;
- wherein the first auxetic layer includes a plurality of apertures extending through a thickness of the first auxetic layer and arranged to form a first auxetic structure;
- wherein the second auxetic layer includes a plurality of projections arranged to form a second auxetic structure;
- wherein the first auxetic layer is disposed on a top surface of the second auxetic layer;
- wherein the plurality of apertures of the first auxetic layer is configured to receive the plurality of projections of the second auxetic layer such that at least a portion of each of the plurality of projections is spaced apart from a wall of a surrounding aperture from the plurality of apertures;
- and wherein the spacing between each projection and the surrounding aperture allows the respective projection and surrounding aperture to expand or contract independently from each other in response to a tension applied through each of the first auxetic layer and the second auxetic layer.
An article of footwear, comprising:
- an upper;
- a sole structure with an insole and an outsole;
- wherein the insole includes a bottom surface, wherein the bottom surface of the insole includes a plurality of apertures arranged to form a first auxetic structure;
- wherein the outsole includes a top surface, wherein the top surface of the outsole includes a plurality of projections arranged to form a second auxetic structure;
- wherein the bottom surface of the insole is disposed adjacent to the top surface of the outsole;
- wherein each projection of the plurality of projections is configured to extend upward and into a corresponding aperture of the plurality of apertures when the bottom surface of the insole is disposed adjacent to the top surface of the outsole, and wherein each projection includes a portion that is spaced apart from a wall of the aperture within which it extends;
- wherein the insole has a first insole sidewall and a second insole sidewall, wherein the first insole sidewall is tapered and wherein the second insole sidewall is tapered;
- wherein the insole is configured to fit within a cavity of the outsole, wherein the cavity has a first cavity sidewall and a second cavity sidewall, wherein the first cavity sidewall is tapered and wherein the second cavity sidewall is tapered;
- wherein the first cavity sidewall is in contact with the first insole sidewall when the insole is disposed in the cavity, wherein the second cavity sidewall is in contact with the second insole sidewall when the insole is disposed in the cavity;
- and
- wherein the insole is secured within the article of footwear by the contact between the first insole sidewall and the first cavity sidewall and by the contact between the second insole sidewall and the second cavity sidewall.
Dependencies are inferred from the claim text.