| 摘要 |
A cushioned shoe sole includes an outer sole layer for contacting the ground surface, a midsole layer disposed above said outer sole layer and being formed of a resilient elastomeric material, and a bladder composite which includes a first bladder inflated with a first fluid medium and having a perimeter area and a second bladder element formed around the first bladder element perimeter area and encasing the first bladder element. The first and second bladder elements are positioned within the midsole layer. In a method for forming a cushioning device in accordance with the present invention, a first bladder is formed from an elastomeric material to include an interior cavity defined within a perimeter of the bladder. The first bladder is inflated under pressure, sealed , and a second bladder is then formed from an elastomeric material around the first inflated bladder.
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