Steel cord for reinforcement of rubber articles and pneumatic tire using the same
US8991457B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 12, 2009 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | May 24, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S57/902
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A steel cord for reinforcement of rubber articles, whose cord strength is enhanced by preventing occurrence of preceding break of the outermost layer filaments in the steel cord having a multi-twisted structure, and a pneumatic tire using it as a reinforcing material are provided.In a steel cord for reinforcement of rubber articles having a multi-twisted structure in which a plurality of strands are twisted together, which strands have a layered twisted structure in which a plurality of steel filaments are twisted together, dc/ds, which represents the ratio between dc, the diameter of outermost layer sheath filaments constituting the outermost layer sheath of a core strand, and ds, the diameter of outermost layer sheath filaments constituting the outermost layer sheath of sheath strands, is 1.05 to 1.25.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.