Patent ID: 6637487
Filing Date: 2003-10-28
Classification: B60C,D07B,Y10S,Y10T

Abstract:
A pneumatic tire comprising:a carcass extending between bead portions through a tread portion and sidewall portions, and a belt disposed radially outside the carcass in the tread portion, said belt composed of at least two plies across the tread portion which include a radially outmost monofilament-cord ply and a radially inner multifilament-cord ply, the monofilament-cord ply made of monofilament cords laid at an inclination angle of from 15 to 30 degrees with respect to the tire circumferential direction, the multifilament-cord ply made of multi-filament cords laid at an inclination angle of from 15 to 70 degrees with respect to the tire circumferential direction, each said multi-filament cord made of a plurality of steel filaments twisted together, each said monofilament cord being a steel monofilament having a substantially circular cross sectional shape and a cross sectional area of from 0.09 to 0.30 sq. mm, each said monofilament cord spirally waved so that the wave pitches PA are in a range of from 14 to 50 mm, and the amplitude HA of each wave is in a range of from 0.002 to 0.02 times the pitch PA of the wave.