Patent ID: 6505420
Filing Date: 2003-01-14
Classification: A43B

Abstract:
An article of footwear comprising:a sole having a top surface, a bottom surface, a medial side, a lateral side, and an exterior sidewall extending substantially around said medial side and lateral side; a cavity formed within said sole; a molded, sealed cushioning member disposed within said cavity formed of an elastomeric material defining a hollow interior having sufficient volume to provide cushioning upon application of a force, said hollow interior of said cushioning member containing air at substantially ambient pressure when in an unloaded condition, said cushioning member including a first chamber having an upper surface, a lower surface, a lateral side surface and a medial side surface, a second chamber having an upper surface, a lower surface, a lateral side surface and a medial side surface, and a communication chamber connecting said first chamber and said second chamber; and a plurality of ridges disposed on said upper surface and said lower surface of said communication chamber.