Spring cushioned shoe
US7219447B2 · kind B2 · utility
36Cited by
53References
9Claims
0Family size
Inventors
Key dates
| Filing date | Jan 31, 2005 |
| Grant date | May 22, 2007 |
| Priority date | — |
| Expiry date | Apr 28, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B13/183
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A sole assembly for an article of footwear comprises a midsole, a sole having a heel region, and a first wave spring disposed within a vacuity located within the heel region. The wave spring includes a top surface and a bottom surface. A plate, resting upon the top surface of the wave spring, is unsecured to the midsole and sized to permit movement within the vacuity along with the wave spring responsive to a rolling footstrike.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.