REMOVABLE INSOLE FOR FOOTWEAR Russian patent published in 2010 - IPC A43B17/08 A43B17/14 A43B7/06 

FIELD: personal use articles.

SUBSTANCE: three-layers inserted insole for footwear consists of a highly elastic material, sealed at the periphery in the form of a sealed covering, and has several cameras that are connected to each other with channels. There on two levels with a special distribution insert located in the insole under the arch of the foot four functional chambers are set up. At the lower level made with the middle and lower elastic layers there are toe and heel injection chamber. At the top level, between the middle and upper breathable layer there are toe and heel aeration chambers. The distribution insert is equipped with bypass channels connecting the lower chambers with their opposite upper chambers. The lower chambers are interconnected by general pressure channel with an outlet to the atmosphere. All channels are equipped with outlet check valves. In addition, this distribution insert is equipped with an operating mode switch of insole, which is made in the form of a rectangular groove in the body of the distribution insert located perpendicular to the longitudinal axis of the insole, and crossing the bypass channels between the chambers. Also there is a rectangular "cake" placed and corresponding to the shape of groove, with holes similar to holes intersected the spillway channels. At that the ratio of the size of the groove and "cake" is made in such a way that ensures the free movement of "cake" in its two extreme positions in the groove. I.e. when the holes of the "cake" are coaxial to holes of bypass channels (ventilation mode), and when it closes these channels (heating mode).

EFFECT: intensification of air exchange as in a toe and a heel parts of the shoe with the help of cyclic air injection into the upper chamber of the insole using the lower chambers during the movement of the shoe with the insole, as well as in the case of need, capability of heating toe and heel parts of footwear due to cyclic compression of air in the spillway overlapped channels in closed volumes of lower chambers of insole.

3 dwg