Radial tire with three layer multi-sheath steel carcass cords

Details Radial tire with three layer multi-sheath steel carcass cords Radial tire with three layer multi-sheath steel carcass cords

1997-08-12

1998-06-30

Johnstone, Adrienne C.

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

152451, 152556, B60C 900, B60C 902, B60C 904, B60C 908

Patent

active

057728089

ABSTRACT:
A steel cord for the reinforcement of rubber article has a three-layer twisting construction comprising a core layer comprised of a single steel filament, a first sheath layer comprised of six steel filaments and a second sheath layer comprised of steel filaments subtracted by 1 or 2 filament from maximum steel filament number arranged on a circumscribed circle of the first sheath layer without a wrap filament. In this steel cord, filament diameters of the core layer and the sheath layers satisfy the particular relationships. The steel cord is used in a carcass ply of a heavy duty pneumatic radial tire.

REFERENCES:
patent: 4651513 (1987-03-01), Dambre
patent: 4781016 (1988-11-01), Sato et al.
patent: 4840213 (1989-06-01), Koseki
patent: 5074345 (1991-12-01), Penant
patent: 5261473 (1993-11-01), Penant
"High Tensile Strength Steel Cord Construction for Tyres," Research Disclosure, Aug. 1992, No. 340, Emsworth, GB, pp. 624-633.

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