B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
152/79
B60C 9/02 (2006.01) B60C 3/04 (2006.01) B60C 11/00 (2006.01)
Patent
CA 2018217
A radial tire, of which initial carcass profile in an unused tire state is maintained through the tire life to prevent tire performances improved by arranging the carcass profile from being deteriorated, and in which the ratio (R1/R1(5)) of the radius (R1) of curvature of the carcass profile in an upper sidewall region when the tire is mounted on the regular rim and inflated to the normal pressure to the radius (R1(5)) of curvature of the carcass profile in an upper sidewall region when the tire is mounted on the regular rim and inflated to 5% of the normal pressure, is not less than 0.70 and not more than 0.95, the ratio (TR1/SW) of the radius (TR1) of curvature of the tread face to the maximum tire section width (SW) when the tire is mounted on the regular rim and inflated to the normal pressure, is not less than 1.28 and not more than 1.95, and at least one of ratios (R1/R2) and (R1/Hg) satisfy the following conditions: the ratio (R1/R2) of the radius (R1) of the upper region to the radius (R2) of the lower region when the tire is mounted on the regular rim and inflated to the normal pressure, is not less than 0.95 and not more than 1.08, the ratio (R1/Hg) of the radius (R1) of the upper region to the radial distance (Hg) between the maximum tire section width point (b) and the center point (g) on the tire equator, when the tire is mounted on the regular rim and inflated to the normal pressure, is not less than 0.90 and not more than 1.05.
Borden Ladner Gervais Llp
Sumitomo Rubber Industries Limited
LandOfFree
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