Pneumatic radial tires

Details Pneumatic radial tires Pneumatic radial tires

1983-12-15

1986-02-25

Boland, Lois E.

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

156124, 57213, 57218, 57902, B60C 900

Patent

active

045722641

ABSTRACT:
A pneumatic radial tire is disclosed, which comprises steel cords having a two or three layer construction represented by a designation of l+m or l+m+n as a tire reinforcement, wherein two layers at a center side of a transverse section in the steel cord have the same twisting direction but different twisting pitches. In this steel cord, m filaments constituting an outer layer are arranged so as to enter into an inside of a circumscribed circle enveloping l filaments of an inner layer at a non-contact region above a predetermined value and have a form ratio of 90-110%.

REFERENCES:
patent: 3358435 (1967-12-01), Peene
patent: 3778993 (1973-12-01), Glushko et al.
patent: 3996733 (1976-12-01), Holmes
patent: 4311001 (1982-01-01), Glushko et al.

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