Patent ID: 9681703
Date: 2017-06-20
CPC Classifications: A43B,A43C,B33Y

Claim:
1. A sole structure for an article of footwear, the sole structure comprising: an outer member; a plurality of ground engaging members extending from a base portion of the outer member, the plurality of ground engaging members comprising at least a first ground engaging member; the first ground engaging member comprising at least a first arm portion and a second arm portion, the first arm portion including a first face and a second face, the second arm portion including a third face and a fourth face, wherein each of the first face, the second face, the third face, and the fourth face is substantially flat and comprise a substantially triangular shape; wherein the first face, the second face, the third face, and the fourth face are spaced apart from one another; wherein the first face is attached to the base portion of the outer member and wherein the second face is attached to the base portion of the outer member; wherein a first hinge portion extends between the first face and the second face, wherein a second hinge portion extends between the second face and the third face, wherein the first hinge portion comprises an exposed portion of the base portion, wherein the second hinge portion comprises an exposed portion of the base portion; wherein the first face and the second face can rotate with respect to each other about the first hinge portion; wherein the second face and the third face can rotate with respect to each other about the second hinge portion; wherein the first face and the second face rotate away from one another when a tensioning force is applied at the first hinge portion; wherein the first face has a first hardness, and the base portion has a second hardness, wherein the first hardness is different from the second hardness; and wherein the sole structure at least partially comprises an auxetic structure, and wherein the plurality of ground engaging members are arranged on the outer member to provide the sole structure with the auxetic structure.