Insert or midsole for a footwear
A Footwear comprising a sole ( 12 ) and a midsole ( 10 ), which is placed in contact with the foot ( 15 ) of a user and which has a structure ( 14 ) made of elastomer. The midsole ( 10 ) has a series of zones or regions ( 11 A, 11 B, 11 C) in correspondence with which a lower profile of the midsole ( 10 ) placed in contact with said sole ( 12 ) is emptied in correspondence with a series of spaces ( 13 ) of predetermined height made between said structure ( 14 ) and said sole ( 12 ).
1 . A footwear comprising:
a sole; and
a midsole configured to be placed in contact with a foot of a user, said midsole having a structure made of elastomer, wherein said midsole has a series of zones or regions in correspondence with which a lower profile of the midsole placed in contact with said sole is emptied to form continuous recesses defining a series of spaces of predetermined height between said structure and said sole,
wherein in correspondence with a first of said zones or regions—there are two first portions in correspondence with which said spaces are provided in said structure, and wherein said spaces—have a height with a curvilinear and asymmetrical course on one side and on the other with respect to a longitudinal axis of the midsole.
2 . The footwear of claim 1 , wherein said zones or regions correspond to an anterior and median plantar region and to a heel region of the foot of the user.
3 . The footwear of claim 1 , wherein said spaces have a substantially rectangular geometry and increasing and decreasing heights between a longitudinal axis of the midsole and lateral ends of said zones or regions.
4 . The footwear of claim 1 , further comprising, in correspondence with a second of said zones or regions, two second portions in correspondence with which said spaces are provided in said structure.
5 . The footwear of claim 4 , wherein said spaces have a height with a curvilinear and asymmetrical trend on one side and on the other with respect to a longitudinal axis of the midsole.
6 . The footwear of claim 4 , further comprising, in correspondence with a third of said zones or regions, a third portion in correspondence with which said spaces are provided in said structure, a height of said third portion having a curvilinear and symmetrical course on both sides with respect to said longitudinal axis of the midsole.
7 . The footwear of claim 6 , wherein said spaces have a height in correspondence with said second and third portions which is greater with respect to said first portions.
8 . The footwear of claim 1 , wherein said spaces are defined by said continuous recesses formed in said lower profile of the midsole rather than by individual discrete structural elements extending from said structure.
9 . The footwear of claim 1 , wherein said emptying of the lower profile creates said continuous recesses such that elastomer portions of said structure overlying said spaces are adapted to deform into said spaces under the weight of the user.
10 . The footwear of claim 1 , wherein said spaces extend continuously along a transverse direction of the midsole within each of said zones or regions.
11 . The footwear of claim 4 , wherein said zones or regions having said spaces are separated by intermediate regions substantially free of said spaces, said intermediate regions including a plantar fascia located between said first zone and said second zone, a fascia substantially corresponding to a cambril of the footwear, and a posterior fascia to a heel region.
12 . The footwear of claim 1 , wherein said emptying comprises removing material from a continuous surface of said lower profile to form said continuous recesses defining said spaces of predetermined height.
13 . The footwear of claim 1 , wherein said curvilinear and asymmetrical course is a smooth curvilinear and asymmetrical course.
14 . The footwear of claim 13 , wherein the curvilinear course of the height of said spaces defines a continuously-varying profile without angular or stepped transitions.