Multi-layer steel cord where intermediate filaments are coated with a polymer
US7089723B2 · kind B2 · utility
8Cited by
7References
7Claims
0Family size
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Key dates
| Filing date | Sep 9, 2002 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Oct 4, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2933
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A steel cord comprises a core with one or more core steel filaments and further comprises a first layer of intermediate steel filaments twisted around the core, and a second layer of second steel filaments twisted around the first layer. At least one of the intermediate steel filaments is individually coated by means of a polymer with a minimum thickness of 0.010 mm. The polymer reduces the fretting between the coated intermediate steel filaments and the other steel filaments and makes the steel cord suitable for reinforcement of carcass plies of a tire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.