Patent ID: 8893403

Claim:
Shoe with a sole construction and a shaft of a shoe, where said sole construction comprises an upper sole part which has channels; a lower outsole part; and an air pumping device which is connected to said channels and formed substantially in said upper sole part; where said lower outsole part at the outer tread area in the region of said air pumping device comprises a raised portion which is adapted to be pressed in the direction of said upper sole part when the user's foot applies pressure; and the effect of which is formed by the cooperation of said upper sole part and said lower outsole part; at least one first air guide connected with said air pumping device; and comprising at least one second air guide connected on one side with the air pumping device and on an opposite side with the channels, and where said air pumping device is adapted to perform an air pumping function in response to a walking motion of a user of said shoe, such that it alternatingly sucks in air via said at least one first air guide from outside of said sole construction and forces air into the channels which are in communication with the air pumping device via the at least one second air guide; and where, in said at least one first air guide, a first valve is arranged, such that it is configured to allow air to pass only in the direction from outside of said sole construction into said air pumping device; and where in the at least one second air guide, a second valve is arranged, such that it is configured to allow air to pass only in the direction from the air pumping device to the channels; and where said shaft of a shoe comprises a sole construction proximal part and a sole construction distal part, and in which said first air guide extends partially along said shaft of a shoe, in particular, separated by an inner lining of said shaft of a shoe from said foot of the wearer of said shoe, from said proximal part to said distal part, such that air from said distal part can be pumped into said air pumping device, where said upper sole part and said lower outsole part are formed separately; where at least the portion of said upper sole part, in which said air pumping device is formed, is designed more elastically than said lower outsole part; and where said air pumping device is formed separately as an independent entity and is entirely or partially embedded in a cavity of said upper sole part.