Pneumatic tire and tire carcass having "directional" or "rotary

Details Pneumatic tire and tire carcass having "directional" or "rotary Pneumatic tire and tire carcass having "directional" or "rotary

1987-03-16

1989-09-19

Hoch, Raymond

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

152538, B60C 918

Patent

active

048672190

ABSTRACT:
A directional type pneumatic tire, one that must be mounted on vehicle wheels to rotate in a specified direction of wheel rotation, having circumferential or rotary imbalanced belt ply cord strength and rigidity and directionally strengthened resistance to torsional stress forces in forward operational mode, which tire has a tire crown area and a cord carcass; the tire tread having two tread shoulder areas, and wherein the tire cord carcass belt ply assembly includes at least one two-piece confluent ply of relatively narrow belt ply cord material including cords positioned at high rigidity bias angles and each two-piece confluent ply being inclined in one rotary direction; the cord angles of said narrow confluent belt ply pieces inclined at commercially equal but opposite bias angles from an area under one tread shoulder across the carcass crown extending significantly beyond the circumferential centerline of the tire carcass and terminating significantly short of the area under the other tread shoulder. The tire belt ply assembly also may include conventional or standard belt ply pieces and known reinforcing cord material.

REFERENCES:
patent: 2984282 (1961-05-01), Vittorelli
patent: 3550666 (1970-12-01), Menell
patent: 3612136 (1971-10-01), Gough
patent: 3881492 (1975-05-01), Mirtain
patent: 4176703 (1979-12-01), Nojima et al.
patent: 4360051 (1982-11-01), Wykoff

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