Crown reinforcement for a radial tire
US7461678B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2005 |
| Grant date | Dec 9, 2008 |
| Priority date | — |
| Expiry date | Aug 13, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10792
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tire includes a radial carcass reinforcement surmounted radially by a crown reinforcement including a working reinforcement having two working crown plies of calendered inextensible metallic reinforcement elements and rubber mix. The reinforcement elements are parallel to each other within each ply and are crossed from one ply to the next, forming with the circumferential direction respective angles α1 and α2 of between 10° and 45°. The working crown plies have respective axial widths L1 and L2. The tire also includes a protective ply of metallic reinforcement elements with an axial width L3 such that L2<L3, L2 being the width of the working ply adjacent to the protective ply. A layer of cohesive rubber mix GB is arranged radially internal to the working reinforcement such that the axially outer end of the layer GB is at a distance from the equatorial plane greater than L1/2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.