Antireverse running-surface treatment for cross-country skis
US4705815A · kind A · utility
4Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1986 |
| Grant date | Nov 10, 1987 |
| Priority date | — |
| Expiry date | Sep 12, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/905
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
An antibackslide treatment for a cross-country ski consists of a polyurethane containing a filler or closed-pore structure and which combined hydrophobicity with an elastic character which varies depending upon the velocity of its deformation. During the propulsion phase where the velocity of deformation is low, the treatment has viscoelastic characteristics whereas during the sliding phase when the velocity of deformation is high, the treatment has more elastic properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.