Tire with a tread sub-layer containing multiple materials
US12090790B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2019 |
| Grant date | Sep 17, 2024 |
| Priority date | — |
| Expiry date | May 16, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C2011/0025
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Tire (1) having a sub-layer (7) made up substantially of a base layer (71) disposed radially on the crown reinforcement (5) and axially between the median plane (CP) and a shoulder (60), said base layer (71) being made up of a rubber compound of given stiffness A, a covering layer (72) disposed radially on the base layer (71) and radially on the inside of the tread (6) and axially at least in sections situated between the median plane (CP) and the shoulder end (721), said covering layer (72) being made up of a rubber compound of given stiffness B, the stiffness A being less than the stiffness B, and the stiffness B being greater than the stiffness M.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.