M+N steel cord for reinforcing rubber product
US10975519B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2017 |
| Grant date | Apr 13, 2021 |
| Priority date | — |
| Expiry date | Jun 14, 2037 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD07B2401/208
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A steel cord for rubber reinforcement comprises a first group of core filaments (105) having a number of m and a second group of sheath filaments (110) having a number of n, m is three or four, the core filaments (105) are forming a helix, the core filaments (105) are not twisted together and being substantially parallel or the core filaments (105) have a twist pitch being more than 300 mm; the second group and the first group are twisted with each other, and the sheath filaments (110) are forming a flattened helix in the same direction of the helix of the core filaments (105), and the sheath filaments (110) have a cord twist pitch, at any cross-section of the steel cord, at least one interstice between two adjacent core filaments (105) is present. The steel cord has improved abrasion resistance and can contribute to the reduction of the weight of the tire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.