ApplicationNo. 864467 filed on 05/28/1997
US Classes:36/27, Spring heel36/7.8, Spring36/38, Metallic spring36/92, Heel support36/151, Including metal spring means36/158, By spring placement36/168, Including metal spring means36/179, Including metal spring means623/55Resilient
ExaminersPrimary: Sewell, Paul T.
Assistant: Stashick, Anthony
Attorney, Agent or Firm
Foreign Patent References
International ClassesA43B 013/18
AbstractA midsole system for a running shoe or foot prosthesis have a sole spring, a heel spring and/or a forefoot spring stores energy of foot impact and releases it during the running cycle. A preferred embodiment provides bending beam sole systems for shoes or foot prostheses comprising a bending beam heel spring, a bending beam forefoot spring, a two coupled spring sole system, and a three coupled spring sole system. The sole systems of this invention maximize stability, cushioning, and walking or running economy.