Spring cushioned shoe
US6886274B2 · kind B2 · utility
59Cited by
22References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2003 |
| Grant date | May 3, 2005 |
| Priority date | — |
| Expiry date | Feb 20, 2023 |
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 sole having a heel region and a ball region. A first multi-turn wave spring disposed within the sole comprises an upper turn and a lower turn. The upper turn is in pivotal contact with the lower turn to define a first side and an opposing second side of the multi-turn wave spring. Compression of the first side causes expansion pressure on the second side and compression of the second side causes expansion pressure on the first side to provide cushioning and energy return responsive to a rolling footstrike.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.