Patent ID: 8015728
Filing Date: 2011-09-13
Classification: A43B,A61F

Abstract:
1. A shoe insert shaped like a shoe insole and having a heel end, a toe end, and an instep, said insert having a cushioned layer comprising: a) a flexible and supple upper component; b) a lower component; and c) a pouch that contains liquid, wherein: the upper and lower components are attached and sealed inseparably to each other at their respective perimeters, said attachment forming a volume; the lower component comprises a plurality of indentations; the pouch is positioned at the instep and shares a sealed common boundary with the upper and lower components; the pouch contains a liquid; the volume between the upper and lower components contains a chemical substance; the common boundary between the pouch and the upper and lower components separates the liquid contents of the pouch and the volume formed between the upper and lower components; and, the common boundary between the pouch and the upper and lower components is weaker than the rest of the seal between the upper and lower components, such that when sufficient pressure is applied to the pouch, the common boundary ruptures, thereby permitting the liquid from the pouch to enter into the volume between the upper and lower components and to react with the chemical substance therein.