Material for reinforcing against the creep of the inner rubber of a tire for a heavy duty civil engineering vehicle
US11813893B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2019 |
| Grant date | Nov 14, 2023 |
| Priority date | — |
| Expiry date | May 10, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60C2200/065
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tire for a civil engineering vehicle the endurance of which has been improved by the addition of an anti-creep layer (30) with a thickness E2 interposed between the airtight inner layer (20), with a thickness E1, and the reinforcer coating layer (46) of the carcass reinforcement (40), with a thickness E3. The thicknesses E1, E2 and E3, being measured in millimetres in a shoulder region forming the transition between the crown and each sidewall of the tire, satisfy the following equations: 2≤E1≤4; 6≤E2+E3 and E1/E2≥0.6. In addition, the viscoelastic loss P60 of the elastomeric mixture M2 of the anti-creep layer (30) is at most equal to 20%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.