Patent ID: 8286370

Claim:
A waterproof vapor-permeable shoe, comprising: an upper portion, which delimits a foot insertion region; a sole, made mainly of plastic material, which is provided with at least one region which is diffusely perforated with through holes in the direction of a walking surface; a vapor-permeable or perforated flat element, which is rigidly coupled to a lower portion of said sole on which the tread of said sole is formed or rigidly coupled, said flat element being arranged so as to overlap directly said at least one diffusely perforated region and being adapted to limit the formation of hollows in the foot insertion region at the projection of the holes of said at least one diffusely perforated region; a waterproof vapor-permeable membrane, which is associated with said upper portion and/or with said sole, is arranged above said flat element so as to be superimposed on said at least one diffusely perforated region, and is joined hermetically along its perimeter to the portion of shoe that surrounds said membrane so as to avoid the rise of liquid from said at least one diffusely perforated region and along the perimetric edge of said membrane within the foot insertion region, means for protection against piercing being associated with said membrane and comprising at least said flat element, wherein said upper portion is composed of a vapor-permeable or perforated upper, which is associated with a lining which is likewise vapor-permeable or perforated, and a vapor-permeable or perforated insole, below which said membrane is fixed, said insole, with said membrane being sewn perimetrically to the edges of the assembly constituted by the upper and the lining, the perimetric seal of said membrane being superimposed on the region that connects said upper and said lining with said insole provided with said membrane, wherein said perimetric seal is constituted by plastic material which is overmolded on said upper portion providing at least part of said sole, wherein said flat element is adapted for use as a mold insert such as to be incorporated within the sole during the injection thereof onto the upper portion, wherein said flat element has a net-like structure made of a material which is resistant to hydrolysis, and wherein said means for protection against piercing comprise a protective layer which is arranged between said flat element and said membrane.