Pneumatic radial tire with belt cords having at least one shape-

Details Pneumatic radial tire with belt cords having at least one shape- Pneumatic radial tire with belt cords having at least one shape-

1991-11-01

1993-09-07

Weston, Caleb

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

57902, 148402, 152451, B60C 918, B60C 920

Patent

active

052420027

ABSTRACT:
A pneumatic radial tire is disclosed, including an annular tread having a belt incorporated therein, a pair of sidewalls which extend radially inward from both ends of the annular tread and a bead portion, provided at the inner end of each sidewall, wherein the belt includes a belt ply having a plurality of belt cords in parallel arrangement, the belt cords being formed by twisting a plurality of steel filaments or two or more strands each consisting of a plurality of steel. filaments, and at least one of said steel filaments being replaced by a filament of a shape-memory alloy which, before it is twisted either as a belt cord or as a strand which forms a belt cord, has been heat set at a predetermined heat set temperature whereby the filament has a linear shape at a temperature below the heat set temperature and has a wavy shape at a temperature at or above the heat set temperature.

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