Midsole with graded response
US11758976B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2022 |
| Grant date | Sep 19, 2023 |
| Priority date | — |
| Expiry date | Jan 20, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2437/02
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A sole structure for an article of footwear comprises a midsole having four stacked polymeric sheets bonded to one another to define a first cushioning layer, a second cushioning layer, and a third cushioning layer. Each cushioning layer comprises a sealed chamber retaining gas in isolation from each other sealed chamber. Bonds between adjacent ones of the sheets are arranged such that the third cushioning layer is stacked directly above the first cushioning layer with the second cushioning layer bordering both the first cushioning layer and the third cushioning layer, and the sealed chamber of the second cushioning layer includes a plurality of elongated segments each extending lengthwise across a longitudinal midline of the midsole at a respective acute angle to the longitudinal midline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.