Cushion insole/insock material
US4999237A · kind A · utility
10Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1990 |
| Grant date | Mar 12, 1991 |
| Priority date | — |
| Expiry date | Aug 14, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2361
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A cushion insole/insock material having a compression stiffness, resilience and energy absorption to provide comfort in conventional or sports footware. The material is a non-woven, low density felt made from fibres and imrpegnated with a rubbery impregnant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.