Pneumatic radial tire with rubber chafer, stiffener and sidewall-reinforcing rubber layer
US5620539A · kind A · utility
11Cited by
1References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1995 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Dec 8, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10864
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A pneumatic radial tire comprises a radial carcass ply toroidally extending between a pair of bead cores, a stiffener disposed above each bead core between the carcass ply and its turnup portion, and a rubber chafer arranged outside the turnup portion, provided that a ratio of cross-sectional area of the stiffener to cross-sectional area of the rubber chafer is not more than 0.5. In this tire, a sidewall-reinforcing rubber layer having a JIS A hardness of not less than 80.degree. is arranged along the carcass ply in a region ranging from a crown portion of the carcass ply to the bead core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.