Importance

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Abstract

An athletic shoe including an upper and a sole. The sole includes a cushioning bladder including a sealed, fluid-filled tube disposed about the perimeter of the shoe. In one embodiment, the bladder includes lateral and medial portions extending about the heel and forwardly towards the forefoot to define a central region occupying a substantial portion of the heel and forefoot of the shoe. No portion of the tube extends within the central region, which may be occupied by ambient air or by a second bladder or chamber which is not in fluid communication with the tube. In an alternative embodiment, the bladder includes a tube having lateral, medial and transverse portions, with the transverse portion extending between the medial and lateral portions at the instep area of the shoe, to define a central forefoot region. In a further alternative embodiment, both a central forefoot and a central heel area may be defined. The shoe may further include a substantially rigid footframe disposed directly above the bladder and spanning the lateral and medial sides.

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First Claim