Heavy duty tire with reduced shoulder wear and improved wanderin

Details Heavy duty tire with reduced shoulder wear and improved wanderin Heavy duty tire with reduced shoulder wear and improved wanderin

1991-06-03

1994-11-01

Ball, Michael

Resilient tires and wheels

Tires, resilient

Pneumatic tire or inner tube

152209R, 152532, 152534, B60C 300, B60C 920, B60C 1103

Patent

active

053600460

ABSTRACT:
A pneumatic tire for heavy duty use improved in shoulder wear resistance and wandering performance, in which a tread profile extending between tread edges (PT) is formed by an arc having an outwardly swelling curvature of a radius (TR), a buttress profile extending radially inwardly from a point (PB) on the surface of each tire sidewall is formed by an arc having an inward swelling curvature of a radius (BR), a connecting profile extending between each tread edge (PT) and said point (PB) is formed by an arc having an outwardly swelling curvature and intersecting the tread profile at the tread edge (PT) to form a angled corner and smoothly connected with the buttress profile at the point (PB), the ratio (t/m) of the radial distance (t) between the tread edge (PT) and the equatorial point (C) on the tread profile to the axial distance (m) therebetween is 0.09 to 0.12, the ratio (m/L) of the axial distance (m) to the axial distance (L) between the equatorial point (C) and an imaginary point (PS) at which the tread arc having the radius of curvature (TR) and the buttress arc having the radius of curvature (BR) intersect each other, if extended is 0.85 to 0.95, and the inclination angle (.theta.) or the tangential line (T) to the connecting profile drawn at each tread edge (PT) is 20 to 60 degrees with respect to the radial direction of the tire.

REFERENCES:
patent: 4480671 (1984-11-01), Giron
patent: 4724878 (1988-02-01), Kabe et al.
patent: 5010936 (1991-04-01), Numata et al.
patent: 5042545 (1991-08-01), Kabe et al.

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