Article of footwear with insertable lightweight interior midsole structure
US9060568B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2012 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Nov 8, 2033 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B13/28
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An article of footwear includes an upper that at least in part defines an interior chamber for receiving a foot; an insertable interior midsole component received within the interior chamber; and an exterior sole structure engaged with the upper, wherein the exterior sole structure includes: (a) an exterior midsole component and (b) optionally an outsole component that extends under the forefoot region, wherein the insertable interior midsole component is formed from a foam material comprising a reaction product of about 10 to about 100 phr hydrogenated or non-hydrogenated acrylonitrile butadiene copolymer, 0 to about 40 phr modified hydrogenated acrylonitrile butadiene copolymer, and 0 to about 90 phr alpha olefin copolymer, and at least one additive in an amount suitable to form the foam material; wherein the density of the foam material is less than 0.25 g/cm3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.