Sole for a shoe
Improved soles for shoes, in particular sports shoes, are described. A sole for a shoe, in particular a sports shoe, is provided that includes a midsole with randomly arranged particles of an expanded material. The sole further includes an element having a higher deformation stiffness in at least one direction than the expanded material. The material of the midsole at least partially surrounds the element.
1 . A sole for a shoe, comprising:
a midsole comprising randomly arranged particles of an expanded material;
an element comprising a higher deformation stiffness in at least one direction than the expanded material,
wherein the element is decoupled from the expanded material,
wherein the element is partially embedded within the expanded material of the midsole and a non-embedded part of the element is not embedded only on one or more lateral sides of the sole; and
wherein the element comprises a rod-shaped section oriented in a longitudinal direction in a middle portion of the sole and extending from a rear portion of the sole to a midfoot portion of the sole.
2 . The sole of claim 1 , wherein the rod-shaped section is hollow.
3 . The sole of claim 2 , wherein the rod-shaped section comprises an electronic component.
4 . The sole of claim 3 , wherein the electronic component is a GPS transmitter/receiver.
5 . The sole of claim 3 , wherein the electronic component is not completely surrounded by the midsole.
6 . The sole of claim 1 , wherein the element comprises more than one rod-shaped section.
7 . The sole of claim 1 , wherein the expanded material comprises expanded ethylene-vinyl-acetate (eEVA), expanded thermoplastic urethane (eTPU), expanded polypropylene (ePP), expanded polyamide (ePA), expanded polyether block amide (ePEBA), expanded polyoxymethylene (ePOM), expanded polystyrene (PS), expanded polyethylene (ePE), expanded polyoxyethylene (ePOE), expanded ethylene propylene diene monomer (eEPDM), or combinations thereof.
8 . The sole of claim 1 , wherein the sole has greater stiffness in the direction of a heel toward a foot tip as compared to other directions.
9 . The sole of claim 1 , wherein the element extends at least partially like a skeleton throughout the material of the midsole.
10 . The sole of claim 1 , wherein the element is at least partially grid-like.
11 . The sole of claim 1 , wherein the sole further comprises a heel clip that is arranged at the material of the midsole.
12 . The sole of claim 11 , wherein the heel clip comprises a recess in the region of the Achilles' tendon.
13 . The sole of claim 1 , wherein the element at least partially encompasses a part of the expanded material on the side to selectively limit the deformation of the expanded material.
14 . The sole of claim 1 , wherein the randomly arranged particles are directly bonded to one another at their surfaces while substantially retaining their individual particle shapes in the expanded material.
15 . The sole of claim 1 , wherein the randomly arranged particles form a granular but closed plastic foam structure.
16 . The sole of claim 1 , further comprising an outsole, wherein the element is connected to the outsole.
17 . A shoe comprising the sole of claim 1 .
18 . A shoe, comprising:
a midsole comprising randomly arranged particles of an expanded material;
an element in a midfoot region of the shoe, the element comprising a higher deformation stiffness in at least one direction than the expanded material,
wherein the element is decoupled from the expanded material,
wherein the element is partially embedded within the expanded material of the midsole and a non-embedded part of the element is not embedded only on one or more lateral sides of the sole; and
wherein the element comprises a hollow rod-shaped section oriented in a longitudinal direction in a middle portion of the sole and extending from a rear portion of the sole to a midfoot portion of the sole.