Shoe and sole

1. A sole for an article of footwear, the sole comprising:

a sole plate comprising a plurality of leaf spring elements disposed in a forefoot area of the sole plate, wherein the sole plate and the plurality of leaf spring elements are integrally formed,

wherein each of the plurality of leaf spring elements has a connected end connected to the sole plate and a free end not directly connected to the sole plate, wherein the free end is rearwardly disposed from the connected end,

wherein all free ends point in substantially the same direction,

wherein the sole comprises no leaf spring element in the forefoot area of the sole plate having a free end pointing substantially opposite the direction in which the free ends of the plurality of leaf spring elements point,

wherein at least one leaf spring element comprises a longitudinal section extending in a longitudinal direction of the sole and a transverse section extending from the longitudinal section in a transverse direction of the sole, and

wherein two or more leaf spring elements come together integrally to form a single end not directly connected to the sole plate.

2. The sole of claim 1 , wherein each of the plurality of leaf spring elements is disposed below the sole plate.

3. The sole of claim 1 , wherein at least one of the plurality of leaf spring elements comprises a non-planar form and extends between an insole region and an outsole region of the sole.

4. The sole of claim 1 , wherein at least one of the plurality of leaf spring elements comprises a region with a concave curvature and a region with a convex curvature.

5. The sole of claim 4 , wherein the free end of the at least one of the plurality of leaf spring elements extends horizontally.

6. The sole of claim 4 , wherein the free end of the at least one of the plurality of leaf spring elements is substantially parallel with the sole plate.

7. The sole of claim 4 , wherein an inflection point between the region with the concave curvature and the region with the convex curvature is spaced apart from and below a lower side of the sole plate.

8. The sole of claim 1 , wherein the sole plate extends substantially from a toe area of the sole to a heel area of the sole.

9. The sole of claim 1 , wherein the sole plate comprises a heel cup configured to encompass a heel of a wearer.

10. The sole of claim 1 , further comprising a rear leaf spring element disposed on a rear side of the sole plate, and a lateral leaf spring element disposed on a lateral side of the sole plate.

11. The sole of claim 10 , wherein free ends of the rear leaf spring element and the lateral leaf spring element are interconnected by an interconnection portion. material.

12. The sole of claim 1 , further comprising an upper, wherein the upper is at least partially sewn to the sole plate.

13. The sole of claim 1 , wherein the sole plate comprises a second plurality of leaf spring elements disposed in a rearfoot area of the sole plate, and

wherein the rearfoot leaf spring elements are longer than the forefoot leaf spring elements.

14. The sole of claim 1 , wherein the sole plate comprises a second plurality of leaf spring elements disposed in a rearfoot area of the sole plate, and

wherein the rearfoot leaf spring elements have free ends disposed at a greater distance from the sole plate than the free ends of the forefoot leaf spring elements.

15. The sole of claim 1 , wherein each of the plurality of leaf spring elements extends away from its connected end, and

wherein a horizontal component of the direction of extension of each leaf spring element is only away from its connected end.

16. The sole of claim 1 , wherein the sole comprises no leaf spring element in the forefoot area of the sole plate having a free end pointing substantially opposite the direction in which the free ends of the plurality of leaf spring elements point.

17. The sole of claim 1 , wherein at least two leaf spring elements are connected to form the longitudinal section and the transverse section.

18. The sole of claim 17 , wherein the at least two leaf spring elements connected to form the longitudinal section and transverse section are formed as a single piece.

19. The sole of claim 1 , wherein the longitudinal section and the transverse section define an L-shape.

20. A sole for an article of footwear, the sole comprising:

a sole plate comprising a plurality of leaf spring elements disposed in a forefoot area of the sole plate,

wherein each of the plurality of leaf spring elements has an end not directly connected to the sole plate, and wherein all ends not directly connected to the sole plate point in substantially the same direction, and

wherein two or more leaf spring elements come together integrally to form a single end not directly connected to the sole plate.

21. The sole of claim 20 , wherein the ends of at least two leaf spring elements not directly connected to the sole plate are interconnected by a connection portion.

22. The sole of claim 21 , wherein the ends of the at least two interconnected leaf spring elements not directly connected to the sole plate are integrally formed with each other.

23. The sole of claim 20 , wherein the sole plate and the plurality of leaf spring elements are integrally formed.

24. The sole of claim 20 , wherein the two or more leaf spring elements forming a single end are formed as a single piece.

25. The sole of claim 20 , further comprising a plurality of leaf spring elements disposed in a rearfoot area of the sole plate;

wherein the leaf spring elements comprise a foremost positioned leaf spring element having a foremost positioned end not directly connected to the sole plate and a rearmost positioned leaf spring element having a rearmost positioned end not directly connected to the sole plate,

wherein the foremost leaf spring element and the rearmost leaf spring element have ends not directly connected to the sole plate that are oriented in substantially the same direction such that the end not directly connected to the sole plate is disposed rearward of its connection end, and

wherein each leaf spring element disposed between the foremost leaf spring element and the rearmost leaf spring element has an end not directly connected to the sole plate that is oriented in substantially the same direction such that the end not directly connected to the sole plate of each leaf spring element is disposed rearward of its connection end.

26. A sole for an article of footwear, the sole comprising:

a sole plate comprising a plurality of leaf springs disposed in a rearfoot area of the sole plate and a plurality of leaf springs disposed in a forefoot area of the sole plate,

wherein each of the plurality of leaf springs has a connection end connected to the sole plate and an end not directly connected to the sole plate, and where all ends not directly connected to the sole plate point in substantially the same direction, and

wherein two or more leaf springs come together integrally to form a single end not directly connected to the sole plate.

27. The sole of claim 26 , further comprising an outsole layer that interconnects the ends not directly connected to the sole plate of at least two leaf springs.

28. The sole of claim 26 , wherein the two or more leaf springs that come together integrally to form a single end are disposed in the rearfoot area of the sole plate.

29. The sole of claim 26 , wherein the sole plate and the plurality of leaf springs disposed in the rearfoot area of the sole plate and in the forefoot area of the sole plate are integrally formed.

30. The sole of claim 26 , wherein the ends not directly connected to the sole plate are pointed in substantially the same direction such that the end of each leaf spring not directly connected to the sole plate is disposed rearward of its connection end.

31. The sole of claim 26 , further comprising an outsole layer disposed on the single end of the two or more leaf springs that come together integrally to from the single end.

32. The sole of claim 26 , wherein the two or more leaf springs that come together integrally to form a single end not directly connected to the sole plate are disposed adjacent to each other on the sole plate in a transverse direction between a lateral side of the sole plate and a medial side of the sole plate.