Tire comprising an improved tread
US10710414B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2014 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Mar 21, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C2011/0341
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Tire having a predetermined direction of mounting on a vehicle. The tire tread (40) comprises a central rib (411-413) and two side ribs (421, 422), separated by circumferential grooves (141-144). The side ribs are made from a first rubber composition less than 50% filled with black. The central rib comprises a portion (4111, 4121) made from a second rubber composition more than 50% filled with black, the axial width (LP) of said portion being greater than or equal to 20% of the axial width LC of the central rib. The first rubber composition has a tan δ0 value which is greater than the tan δ0 value of the second rubber composition, where tan δ0 denotes the tan δ value measured at a temperature of 0° C. and under a stress of 0.7 mPa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.