Footwear having a flex-spring sole
US9668540B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2015 |
| Grant date | Jun 6, 2017 |
| Priority date | — |
| Expiry date | Dec 31, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B13/20
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Footwear and soles for footwear are disclosed. The sole may include an energy transfer base. The energy transfer base may include top and bottom surfaces, and opposed first and second side surfaces. The energy transfer base may include at least one cavity. The at least one cavity may define upper and lower portions of the energy transfer base. The upper portion may be configured to move away from a nominal position and toward the lower portion when a force applied to the upper portion toward the lower portion has a magnitude that is above a predetermined value, and to move back to the nominal position when at least one of (1) the force is no longer applied or (2) the magnitude of the applied force is at or below the predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.