Sole construction
US5402588A · kind A · utility
66Cited by
25References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1991 |
| Grant date | Apr 4, 1995 |
| Priority date | — |
| Expiry date | Feb 25, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B21/26
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A shoe construction having an energy return system together with features providing cushioning and stability. The energy return system includes a rigid frame having annular walls in the forefoot and heel areas of the midsole. An outersole defines an opening that is co-extensive with the open area in the midsole. A transparent plastic window is positioned in this opening for viewing the net from below.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.