Patent ID: 8510970

Claim:
A shoe sole for energy restoring that comprises: an anterior support structure that includes a first bent strip spring system, the bent spring system includes an elongate strip bent spring biased to an initial position, the anterior support structure has a first side, an opposed second side, a first edge and an opposed second edge, the anterior support structure defines flexible pivots and multiple flexible pivot angles; a posterior support structure that includes a second bent strip spring system, the bent spring system includes an elongate bent strip spring biased to an initial position, the posterior support structure has a first side, an opposed second side, a first edge and an opposed second edge, the posterior support structure defines flexible pivots and multiple flexible pivot angles; a first support structure that connects the anterior support structure and the posterior support structure into a continuous interrelated elongate bent spring system, the first support structure includes an elongate bent strip spring that is biased to an initial position, the first support structure has a first side, an opposed second side, a first edge and an opposed second edge, the first support structure includes an approximately flat bent strip spring, the first side of the support structure defines a plantar interface that includes a midfoot arch; a dynamic load distribution system that includes the posterior support structure, the posterior support structure adapted to receive a load from an external source and displace from the initial position, the displaced posterior support structure distributes the load to the first support structure.