Cushioning device for a footwear sole and method for making the

Details Cushioning device for a footwear sole and method for making the Cushioning device for a footwear sole and method for making the

1997-10-14

1999-11-09

Kavanaugh, Ted

Boots, shoes, and leggings

Soles

Cushion

36 35B, A43B 1320

Patent

active

059790784

ABSTRACT:
A cushioned shoe sole includes an outer sole layer for contacting the ground surface, a midsole layer disposed above the 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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