Auxetic structures and footwear with soles having auxetic structures
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A43B-013/18
A43B-013/22
A43B-005/00
A43B-013/02
A43C-011/00
A43B-001/00
A43B-003/00
A43B-013/12
B29C-044/34
출원번호
US-0030002
(2013-09-18)
등록번호
US-9402439
(2016-08-02)
발명자
/ 주소
Cross, Tory M.
Hoffer, Kevin W.
Jones, David P.
Kirschner, Patrick B.
Langvin, Elizabeth
Meschter, James C.
출원인 / 주소
NIKE, Inc.
대리인 / 주소
Plumsea Law Group, LLC
인용정보
피인용 횟수 :
10인용 특허 :
69
초록▼
A material that includes at least one layer made of an auxetic structure and articles of footwear having soles comprising the materials. When the material is under tension, it expands in both the direction under tension and in the directional orthogonal to the direction under tension. The articles o
A material that includes at least one layer made of an auxetic structure and articles of footwear having soles comprising the materials. When the material is under tension, it expands in both the direction under tension and in the directional orthogonal to the direction under tension. The articles of footwear have soles that have at least one layer made of a material that has a pattern of geometrical patterns with polygonal apertures. The geometrical patterns have hinged polygons that rotate with respect to each other when the sole is under lateral or longitudinal tension, thus increasing the lateral and longitudinal dimensions of the sole.
대표청구항▼
1. An article of footwear comprising: an upper;a sole structure attached to the upper;wherein the sole structure comprises an outsole, the outsole comprising a ground-contacting outer surface disposed on one side of the outsole;wherein the sole structure has a longitudinal direction extending along
1. An article of footwear comprising: an upper;a sole structure attached to the upper;wherein the sole structure comprises an outsole, the outsole comprising a ground-contacting outer surface disposed on one side of the outsole;wherein the sole structure has a longitudinal direction extending along a length of the article of footwear and a lateral direction extending along a width of the article of footwear;wherein the longitudinal direction is tangential to the outer surface of the outsole and the lateral direction is orthogonal to the longitudinal direction, wherein the lateral direction is also tangential to the outer surface of the outsole;the sole structure further including a plurality of apertures extending from the outer surface of the outsole and extending through a thickness of the sole structure, the plurality of apertures being arranged in geometric patterns;the sole structure further comprising a midsole, the midsole haying a midsole geometry matching an outsole geometry of the outsole, such that the plurality of apertures extending through the thickness of the sole structure are formed by apertures in the outsole and apertures in the midsole that correspond with each other to form single apertures the extend through both the midsole and the outsole;wherein the geometrical patterns comprise triangular portions of the outsole that define and surround the apertures; andwherein tensioning the sole structure in the longitudinal direction causes the outsole to expand in both the longitudinal direction and the lateral direction. 2. The article of footwear of claim 1, wherein the triangular portions are joined to each other by joints that function as hinges allowing the triangular portions to rotate with respect to each other to expand the apertures along both of the longitudinal direction and the lateral direction. 3. The article of footwear of claim 1, wherein the apertures are in the form of reentrant triangles. 4. The article of footwear of claim 1, wherein the plurality of apertures are closed when the sole structure is not under tension. 5. The article of footwear of claim 4, wherein the plurality of the apertures are open when the sole structure is under tension. 6. The article of footwear of claim 1, wherein at least one of the apertures is open when the sole structure is not under tension and is not under vertical compression, and is closed when the sole structure is under vertical compression. 7. The article of footwear of claim 1, further comprising an outer covering over the outsole. 8. The article of footwear of claim 1, wherein the sole structure has a tread pattern. 9. The article of footwear of claim 1, wherein the geometric patterns are hexagonal patterns. 10. The article of footwear of claim 1, wherein the sole structure comprises an auxetic foam material. 11. An article of footwear comprising an upper and a sole structure attached to the upper, wherein the sole structure has a longitudinal direction extending along a length of the article of footwear and a lateral direction extending along a width of the article of footwear, the longitudinal direction and the lateral direction defining a plane, and wherein the sole structure comprises an outsole, the outsole being characterized by having: a ground-engaging outer surface;polygonal portions surrounding polygonal apertures, the polygonal apertures extending from the outer surface of the outsole and extending through a thickness of the sole structure;wherein the polygonal portions are hingedly joined to adjoining polygonal portions such that a plurality of the polygonal portions rotate with respect to each other in the plane of the sole structure when the sole structure is under tension along at least one of the longitudinal direction and the lateral direction;the sole structure further comprising a midsole, the midsole haying a midsole geometry matching an outsole geometry of the outsole, such that the polygonal apertures are formed by apertures in the outsole and apertures in the midsole that correspond with each other to form single apertures extending through both the midsole and the outsole;wherein the polygonal apertures are arranged in geometric patterns comprising triangular portions of the outsole that define and surround the polygonal apertures; andwherein when a portion of the outsole is under longitudinal tension it expands in both the longitudinal direction and the lateral direction and when the portion of the outsole is under lateral tension it expands in both the lateral direction and the longitudinal direction. 12. The article of footwear of claim 11, wherein the sole structure further comprises an outer covering attached to a bottom surface of the outsole. 13. The article of footwear of claim 11, wherein the polygonal apertures have a center, and wherein when the sole structure is subject to vertical compression, the polygonal portions are forced towards the center of the polygonal apertures. 14. The article of footwear of claim 11, wherein the outsole is attached to the upper by overmolding the outsole to the upper. 15. An article of footwear comprising: an outsole that includes a ground-engaging outer surface having a pattern of polygonal apertures formed by triangular portions surrounding the polygonal apertures;the polygonal apertures extending from the outer surface of the outsole and extending through a thickness of the outsole;a midsole, the midsole having a midsole geometry matching an outsole geometry of the outsole, such that the polygonal apertures are formed by apertures in the outsole and apertures in the midsole that correspond with each other to form single apertures extending through both the midsole and the outsole;wherein the polygonal apertures have a center;wherein the triangular portions are joined at their vertices such that they function as hinges thereby allowing the triangles to rotate with respect to each other;wherein the outsole is characterized by having a lateral direction extending along a width of the article of footwear, a longitudinal direction extending along a length of the article of footwear, and a vertical direction that is normal to a plane defined by the lateral direction and the longitudinal direction;wherein when a portion of the outsole is under lateral tension, it expands in both the lateral direction and the longitudinal direction, andwhen a portion of the outsole is under longitudinal tension it expands in both the longitudinal direction and the lateral direction, andwhen a portion of the outsole is under vertical compression, the triangular portions are forced towards the center of the polygonal apertures. 16. The article of footwear of claim 15, wherein the article of footwear has a heel region and wherein the pattern of polygonal apertures extends through the heel region. 17. The article of footwear of claim 15, wherein the outsole has a medial side and a lateral side and an instep region, and wherein the outsole comprises a carve-out portion at a medial side of the instep region. 18. The article of footwear of claim 15, wherein the outsole has a heel region and an instep region, and wherein the polygonal apertures are substantially larger in the heel region than in the instep region. 19. The article of footwear of claim 18, wherein the outsole has a forefoot region, and wherein the polygonal apertures are larger in the forefoot region than in the instep region. 20. The article of footwear of claim 15, wherein the outsole has a heel region, and wherein the polygonal apertures in the heel region are characterized by having a lateral reentrant side that is generally oriented along the lateral direction , and wherein the generally laterally oriented reentrant side has a shallow reentrant angle. 21. The article of footwear of claim 15, wherein the outsole has a forefoot region and wherein the polygonal apertures in the forefoot region are characterized by having a lateral reentrant side that is generally oriented along the lateral direction, and wherein the generally laterally oriented reentrant side has a sharp reentrant angle. 22. The article of footwear of claim 15, wherein the outsole has a heel region, and wherein the heel region has a lateral side, a center and a medial side, and wherein the polygonal apertures at the lateral side of the heel region and at the medial side of the heel region are significantly smaller than the polygonal apertures at the center of the heel region.
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