Tire comprising a tread made up of several elastomeric compounds
US10308073B2 · kind B2 · utility
7Cited by
3References
18Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Nov 15, 2012 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Nov 19, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C2200/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tire with radial carcass reinforcement, comprising a crown reinforcement, itself capped radially by a tread connected to two beads by two sidewalls, the said tread comprising at least two radially superposed layers of polymer compound, a first layer of filled elastomeric compound, constituting the radially outer part of the tread, has a macrodispersion score Z higher than 80 and a maximum tan(δ) value, denoted tan(δ)max, lower than 0.130 and a second layer of elastomeric compound radially on the inside of the said first layer of elastomeric compound has an elongation at break at 60° C. that is higher than 600%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.