Patent ID: 6134812
Filing Date: 2000-10-24
Classification: A43B

Abstract:
Shoe sole which, in the heel region, has a first cavity and, in the ball-of-the-foot region has a deformable second cavity, the two cavities being connected to one another and the outside air via lines, said lines being in communication with valves that are operable between an open position and a closed position wherein,a) provided in a bending region of the sole is a transversely running, downwardly closed gap, which includes therein a deformable third cavity, the third cavity being connected to the second cavity via a first line which is in communication with a first valve that is operable between an open position and a closed position and has at least one discharge line to outside air, said discharge line in communication with a blocking mechanism that is operable between an open position and a closed position;b) the second cavity is separated off by valves and acts as an intermediate pressure-storage space;c) provided that, when the heel region is subjected to loading, a second line connecting the first cavity to the outside air is closed by a second valve, a third line connecting the first cavity is open, the first line connecting the third cavity, is closed and the discharge line from the third cavity is open;d) further provided that, when the heel region is relieved of loading and the ball of the foot is subjected to loading, the second line from the first cavity to the outside air is open and the third line to the second cavity is closed, and, as a result of simultaneous bending of the sole, the gap and the third cavity are compressed and the first line to the second cavity and the discharge line from the third cavity are closed by a blocking mechanism;e) once the sole has been bent and the gap has been closed, an initiating mechanism opens the first line from the second cavity to the third cavity and closes the discharge line at the third cavity to the outside air, the third line from the first cavity to the second cavity being closed and the second line to the outside air being open;f) when the sole is straightened out and the gap is again opened, the first line and the second line are closed and the discharge line of the third cavity is opened by the blocking mechanism to reproduce the state for the loading of the heel region according to c).