Patent ID: 7900377
Filing Date: 2011-03-08
Classification: A43B

Abstract:
1. An energy-return shoe system comprising: a shoe portion; an upper sole affixed to the shoe portion; a lower sole; an upper toe support plate affixed to a toe area of the upper sole; an upper heel support plate affixed to a heal area of the upper sole, the upper heel support plate pivotally connected to the upper toe support plate; a lower toe support plate affixed to a toe area of a top surface of the lower sole and interfaced to the upper toe support plate with at least one toe suspension mechanism; a lower heel support plate affixed to a heel area of the top surface of the lower sole and interfaced to the upper heel support plate by at least one heel suspension mechanism, the lower heel support plate pivotally connected to the lower toe support plate; wherein each of the at least one toe suspension mechanisms comprises: wherein each of the at least one heel suspension mechanisms comprises: at least one spring pushing the upper heel support plate away from the lower heel support plate.