| 摘要 |
The belts (16,17; 23,24) of the crown reinforcing structure of a pneumatic tire (10) are reinforced with high strength, light weight aramid cords (31) having a linear density of 420 to 1100 dTex, said cords having a twist of 315 to 551 TPM (8 to 14 TPI). The crown reinforcing structure comprises a folded belt (23) folded around a cut belt (24). In alternative embodiments, overlay material (27,28) may be incorporated into the crown reinforcing structure. The use of the high strength, lightweight cords (31) reduces the material in the tire and makes possible a tire construction that has reduced gauge, less heat buildup, lighter weight and has improved handling and high speed properties. <IMAGE> |
