Self-ventilating footwear
US5860225A · kind A · utility
32Cited by
8References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1997 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Feb 28, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA43B13/203
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An energy-return pump chamber for footwear. A lateral cross-section of the chamber having rigid top and side portions with flexible top and side elbows between. A longitudinal cross-section of the chamber a flat bottom portion, a rear flat horizontal portion of the top and a downward-slanting front portion of the top down to the forward end of the flat bottom.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.