Cold insulating insole
US4055699A · kind A · utility
77Cited by
9References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 2, 1976 |
| Grant date | Oct 25, 1977 |
| Priority date | — |
| Expiry date | Dec 2, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249953
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multi-layer insole for disposition in an article of footwear to insulate the foot from the cold developed in the sole and sock lining, if any, of the footwear from walking on a cold surface, the insole being sufficiently thin to fit in the footwear satisfactorily to the user without requiring any extra size of shoe, boot or the like and being highly effective in maintaining the foot warm in cold weather.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.