Patent ID: 8863409
Filing Date: 2014-10-21
Classification: A43B

Abstract:
1. An air cushioning bed for use in a shoe, comprising: a first layer of a planar plastic material; and a second, generally contoured layer of plastic material, wherein the first and second layers are sized to fit within an interior of the shoe, a periphery of the second layer is joined to a periphery of the first layer, one or more interior locations within the periphery of the second layer which are generally co-planar with the periphery of the second layer are joined to correspondingly adjacent locations within the periphery of the first layer, and unjoined contoured surfaces of the second layer that are spaced from the first layer function to define a trapped air chamber within the joined peripheries of the second layer and the first layer, while the first layer remains at least substantially planar after the trapped air chamber is defined, the trapped air chamber is defined without introducing air from a separate air source, and wherein the trapped air chamber comprises a plurality of air chamber sub-pockets that are fluidly interconnected with each other from a heel to a toe of the shoe, wherein an air chamber sub-pocket in the heel of the shoe provides a largest sub-pocket surface area of the fluidly interconnected air chamber sub-pockets.