VENTILATED FOOTWEAR WITH DISCHARGE CHAMBER Russian patent published in 2009 - IPC A43B7/06 

FIELD: items of personal and household use.

SUBSTANCE: pneumatic pump, installed in the heel part cavity of the formed sole from the side which is not used for walking, contains the hollow cylinder in which the dual piston consisting of the top and bottom pistons is placed, that is connected to a rod. The spring collar is the top support for the top piston. In the hollow cylinder the disk is fixed. In the hollow cylinder there are two working chambers and the discharge chamber for the dual pistons return to the starting position. The discharge chamber is formed between the bottom face of a disk and the top surface of the piston at downward movement of the dual piston. It is intended for dual piston return to the starting position due to pressure drop affecting the top and bottom surfaces of the bottom piston during the moment of removal of the load from the footwear heel. Output channels in insoles are made at a acute angle to the insole horizontal plane. In the outlets zone in insoles there are grooves going radially from the outlets grooves through which air will be transferred to the allocated zones of foot airflow. The direction of outlet channels and therefore airflow is oriented to the centres of foot problem zones.

EFFECT: creation of local zones of unobstructed ventilation due to focused blowing of problem zones and increase of intensity of footwear ventilation.

4 cl, 3 dwg