Pneumatic radial tires with core-sheath steel belt cords

Details Pneumatic radial tires with core-sheath steel belt cords Pneumatic radial tires with core-sheath steel belt cords

1990-05-18

1994-05-17

Ball, Michael W.

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

57902, 152451, B60C 918, B60C 920

Patent

active

053119177

ABSTRACT:
A pneumatic radial tire for truck and bus comprises a carcass ply containing cords arranged substantially in a radial direction of the tire and a belt superimposed about said carcass ply and comprised of plural belt layers each containing steel cords arranged at a cord angle of 5.degree.-20.degree. with respect to an equator of the tire. In this case, the steel cord for the belt layer has a two-layer structure of a core comprised of two steel filaments and a single sheath comprised of 6-8 steel filaments and satisfies the particularly relationships on filament diameter, twisting pitch, bending rigidity, tensile strength and distance between adjoining cords.

REFERENCES:
patent: 3996733 (1976-12-01), Holmes
patent: 4609024 (1986-09-01), Yatsunami et al.
patent: 4690191 (1987-09-01), Kawasaki
patent: 4732197 (1988-03-01), Heishi et al.
Mechanics of Pneumatic Tires, ed. Samuel Clark: US Dept. of Transportation, Aug. 1981, p. 219.
Peeters et al., "New Developments in Steel Cords for Tires", International Polymer Science and Technology, vol. 11, No. 10, 1984.

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