| 摘要 |
An energy-return shoe system includes a shoe portion for containing a foot, with an upper sole on a bottom surface of the shoe part. The upper sole has an upper toe sole area and an upper heel sole area. The upper sole is capable of bending at a point between the upper toe sole area and the upper heel sole area. A lower sole has a lower toe sole area and a lower heel sole area, also capable of bending at a point between the lower toe sole area and the lower heel sole area. A compressible heel mechanism interfaces the upper heel sole area to the lower heel sole area so that the upper heel sole area is held parallel to the lower heel sole area and the upper heel sole area is held in a same horizontal position with respect to the lower heel sole area. A spring pushes the upper heel sole area away from the lower heel sole area, thereby absorbing energy upon impact and releasing the energy on step-off.
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