Patent ID: 7510538

Claim:
A shoe having at least one base spring element ( 18 ), which is arranged between appendages ( 44 , 46 ) at a heel zone ( 48 ) of the shoe ( 4 ) and at a shaft zone ( 46 ) supported at the front edge of the shin bone ( 50 ) and which stretches during a phase of ambulation, characterized in that a tensioning assembly ( 100 , 100 â€², 100 â€³), which moves the appendage ( 44 ) of the base spring element ( 18 ) at the heel zone ( 48 ) upon planting of the shoe ( 4 ) for stretching of the base spring element ( 18 ) away from the appendage ( 46 ) at the shaft zone, and further wherein the appendage ( 44 ) is positioned on a first rocker member ( 102 ), extending rearwards from the heel zone.