Tire for heavy vehicles
US8069891B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2006 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Apr 20, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/1081
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tire having a radial carcass reinforcement comprising a crown reinforcement formed of at least two working crown layers of inextensible reinforcement elements, which are crossed from one ply to the other, forming angles of between 10° and 45° with the circumferential direction, which itself is topped radially by a tread, said tread being joined to two beads by means of two sidewalls and at least two working layers having different axial widths. At least one first profiled element P of rubber mix separates one working layer from at least one end of a second, axially narrower, layer, said profiled element P being radially separated at least in part from the liner C of said axially narrower working layer by a second profiled element of rubber mix G, said first and second profiled elements of rubber mix P and G and said liner C having secant moduli of elasticity under tension at 10% elongation MP, MG, MC respectively such that MC≧MG>MP, said tire additionally comprising in each shoulder at least one layer of reinforcement elements, which are parallel to each other in the additional layer and are oriented substantially perpendicular relative to the reinforcement elements of the workin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.