Pneumatic radial tire with polyethylene terephthalate cord belt reinforcing layer
US7584774B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 1, 2004 |
| Grant date | Sep 8, 2009 |
| Priority date | — |
| Expiry date | Jul 1, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10783
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
This invention relates to a pneumatic radial tire having low road noise and flat spot and a high high-speed durability, and more particularly to a pneumatic radial tire comprising a radial carcass (5), a belt (6) disposed outside a crown portion of the carcass in a radial direction and comprised of at least two belt layers, and a belt reinforcing layer (7A, 7B) disposed outside the belt in the radial direction, characterized in that the belt reinforcing layer 7A, 7B is formed by continuously and spirally winding a polyethylene terephthalate cord(s) in a circumferential direction of the tire, and this cord has an elastic modulus of not less than 2.5 mN/dtex·% under a load of 29.4 N measured at 160° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.