PNEUMATIC TYRE Russian patent published in 1997 - IPC

FIELD: tyre industry. SUBSTANCE: ends of narrow layers of carcass which do not reach level of 0. 2 of tyre section height are located in points where load N on cord thread in remaining layers built by internal pressure is equal to or differs by 10% maximum from load on cord thread over equator calculated by formula. Separate ends of narrow layers of carcass which do not reach level of 0. 2 of tyre section height are located in zones where load on cord thread built by internal pressure is 30% smaller than load on cord thread over equator, and ends of narrow layers of carcass in zone above widest place of tyre section are arranged mainly in middle layers of carcass. EFFECT: improved quality of tyre. 3 cl, 1 dwg