Tire for motor cycles including a spirally wound aromatic polyam

Details Tire for motor cycles including a spirally wound aromatic polyam Tire for motor cycles including a spirally wound aromatic polyam

1990-10-09

1993-05-11

Ball, Michael W.

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

152531, B60C 918, B60C 922

Patent

active

052097943

ABSTRACT:
A tire for motor cycles has a belt layer containing aromatic polyamide fiber cords spirally wound around a carcass substantially parallel to the equator of a tire, wherein the belt layer is imaginarily divided into a central region (M) and shoulder regions (S and S) at the border points (P and P) spaced apart in the axial direction by a distance of 0.25 times to 0.35 times the tread width (TW) from the equator of a tire and the initial modulus of elasticity of the belt cords in the central region (M) is set to be larger than that of the cords in the shoulder regions (S and S).

REFERENCES:
patent: 4129162 (1978-12-01), DeWitt
patent: 4184530 (1980-01-01), Mirtain
patent: 4219601 (1980-08-01), Inoue et al.
patent: 4293019 (1981-10-01), Maiocchi
patent: 4407347 (1983-10-01), Mirtain
patent: 4445560 (1984-05-01), Musy
patent: 4589461 (1986-05-01), Ohkuni et al.
patent: 4832102 (1989-05-01), Domchick
patent: 4890659 (1990-01-01), Harakon et al.
Mechanics of Pneumatic Tires, ed. Samuel Clark: U.S. Dept. of Transportation, Aug. 1981, pp. 129-130.

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