| 摘要 |
An energy-return shoe system includes a shoe portion for containing a user's foot, an upper sole with an upper toe sole area and an upper heel sole area, the upper sole affixed to a bottom surface of the shoe portion and the upper sole 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; the lower sole is also capable of bending at a point between the lower toe sole area and the lower heel sole area. The upper toe sole area is linked to the lower toe sole area by linkages that hold the upper toe sole area is held parallel to the lower toe sole area. The upper heel sole area is linked to the lower heel sole area by linkages that hold 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. The upper heel sole area is urged away from the lower heel sole area by devices that exert force such as springs.
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