Midsole structure of athletic shoe
US6647645B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 31, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Sep 1, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B13/186
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A midsole structure for an athletic shoe includes an upper midsole (3) formed of a soft elastic material and disposed from a heel region to a forefoot region of the shoe, a lower midsole (4) formed of a soft elastic material and disposed at least at the heel region of the shoe under the upper midsole (3) and a corrugated sheet (5) sandwiched between the upper and lower midsoles (3, 4) and extending from a heel portion (H) of the upper midsole (3) to a midfoot portion (M). The corrugated sheet (5) has a laterally extending sheet portion (5a) and a medially extending sheet portion (5b). Edges (50e, 51e) of the laterally and medially extending sheet portions (5a, 5b) are overlapped in a band-shape and connected to each other. The edge (51e), or a boundary line between the laterally and medially extending sheet portions (5a, 5b) crosses a load transfer curve (TW) for a heel striker who strikes onto the ground from the heel region of the shoe.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.