Pneumatic radial tire with particular belt reinforcing layer fiber cord and particular bead filler height
US6253816A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1997 |
| Grant date | Jul 3, 2001 |
| Priority date | — |
| Expiry date | Jul 23, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10837
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A belt reinforcing layer is disposed outwardly in the radial direction of a tire so as to reinforce the whole portion or the end portions of a tread portion. The belt reinforcing layer is formed by spirally winding a rubber-coated and narrow strip made of a fiber cord/cords around a tire. A pair of bead fillers are disposed directly above bead cores of a pair of bead portions. The cords of the belt reinforcing layer are made of organic fiber cords, and have a 2.7% or less elongation under load of 1.4g/d at the temperature of 50.+-.5.degree. C., and have a 1.5 to 6.0% elongation under load of 0.7g/d at the temperature of 170.+-.5.degree. C. The height L of each of the bead fillers corresponds to 20 to 60% of the cross sectional height T of a tire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.