Spring cushioned shoe
AssigneeShoe Spring, Inc.
InventorsDavid S. Krafsur, Francis E. LeVert
Life of this patent
Estimating the term…
Abstract
A sole assembly for an article of footwear comprises a sole having a heel region and a ball region. A first multi-turn wave spring disposed within the sole comprises an upper turn and a lower turn. The upper turn is in pivotal contact with the lower turn to define a first side and an opposing second side of the multi-turn wave spring. Compression of the first side causes expansion pressure on the second side and compression of the second side causes expansion pressure on the first side to provide cushioning and energy return responsive to a rolling footstrike.
Claims11
A sole assembly for an article of footwear comprising:
- a sole having a heel region and a ball region;
- a first multi-turn wave spring disposed within the sole, said first multi-turn wave spring comprising an upper turn and a lower turn, said upper turn being in pivotal contact with said lower turn to define a first side and an opposing second side of said multi-turn wave spring, whereby compression of said first side causes expansion pressure on said second side and compression of said second side causes expansion pressure on said first side to provide cushioning and energy return responsive to a rolling footstrike.
Dependencies are inferred from the claim text.