Sole for shoes having one or more vertical elements folded over each other, extensible and adaptable to the different width of the assembly last of the upper and to the variation of the conformation of the foot, even permanently

Abstract

The present invention regards the shoe industry and more specifically it concerns a sole provided in a single moulding made of non-rigid but elastic material having one or more vertical elements folded over each other in such a manner that the horizontal extension thereof mechanically adapts the width of the sole to the different width of the assembly lasts of the upper of a shoe and also allowing adapting the width of the sole to the variation of the conformation of the feet generated by the daily swellings thereof leaving the normal flexibility and comfort of the shoe unaltered with the possibility for the user to stabilize the width of the sole to the possible deformation of the foot by injecting - from outside into the widened internal cavity - a foamed two-component fluid material which, upon solidification within a few minutes, blocks any widened part of the sole to the conformation or to the deformation of the feet of the user.

Description

technical field [0001] The present invention relates to the footwear industry and more particularly to a shoe sole provided as a single molded part made of a non-rigid but resilient material having one or more vertical elements that fold over each other, the horizontal mechanical stretching of these vertical elements that fold over each other adapts the width of the sole to the different widths of the assembly last in the upper of the shoe, and also allows the width of the sole to be adjusted To adapt to the conformation changes caused by the daily swelling of the feet, without affecting the normal flexibility and comfort of the shoes, it also allows the user to adjust the width of the sole Stabilizes possible deformations of the foot by injecting from the outside into the widened inner chamber a foamed two-component fluid substance which solidifies within a few minutes and thereby stabilizes the sole Any widening is fixed to the shape or deformation of the user's foot. Bac...

AI Technical Summary

Problems solved by technology

[0015] Although these systems provide a shoe that fits the size of the user's foot, they reveal the disadvantage that the presence of rigid elements in the shoe prevents the shoe from perfectly fitting the foot, limits its flexibility, and cause discomfort

[0016] Another disadvantage of the solution in PCT application WO2006 / 087737 is that it involves the need to provide to the consumer a variety of insoles with rigid elements of various shapes and sizes for each pair of shoes, making the production cost of the shoes Increase

[0017] All of the aforementioned devices rely on the insertion of more or less rigid stabilizing elements for the lateral adaptation of the upper or sole of the shoe, thus limiting and reducing the flexibility of the shoe

Images