Article of footwear with lightweight sole assembly
AssigneeNIKE, Inc.
InventorsSui-Chieh Yu, Denis Schiller, Daniel DeSpain, David Patrick Jones, Eric P. Avar, Kevin W. Hoffer
Life of this patent
Estimating the term…
Abstract
An article of footwear includes an upper and a sole assembly secured to the upper. The sole assembly includes a first portion having a lower ground engaging surface, an upper surface, and a recess formed in the upper surface. The upper surface of the first portion is in contact with the upper. A second portion is seated in the recess in the first portion and has an upper surface, with the upper surface of the second portion being in contact with the upper. The second portion comprises a foam material having a density less than 0.25 g/cm3.
Claims8
A foam material comprising a reaction product of about 10 to about 100 phr hydrogenated or non-hydrogenated acrylonitrile butadiene copolymer, 5 to about 40 phr modified hydrogenated acrylonitrile butadiene copolymer, and 10 to about 90 phr copolymer of ethylene and alpha olefin having up to 20 carbon atoms, and at least one additive in an amount suitable to form the foam material;
- wherein the density of the foam material is less than 0.15 g/cm3.
Dependencies are inferred from the claim text.