B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
152/126
B60C 11/01 (2006.01)
Patent
CA 1334373
A radial tire for heavy duty vehicles is provided herein in which wandering phenomenon can be substantially- completely effectively prevented. The tire has a tread surface defining a ground-contacting area between the axially-outer edges thereof and is provided with at least one longitudinal groove extending in the circumferential direction of the tire. A buffer plane portion extends radially-inwardly and axially-outwardly from each of the axial outer edges of the tread surface so as to be formed substantially in part of a right circular cone having its axis placed on the tire axis, (this being defined as a rotational centre of the tire). The buffer plane portion has an outer surface extending along a plane inclined at an angle in the range of 25 to 70 degrees with respect to a tire equatorial plane, with a total length along the outer surface of the buffer plane portion being at least 0.05 to less than 0.15 times a total axial length between the axial outer edges of the tread surface. The buffer plane portion is also provided with at least one buffer groove extending substantially-continuously in the circumferential direction of the tire, having a depth in the range of 0.25 to 0.8 times the groove depth of the longitudinal groove.
585116
Borden Ladner Gervais Llp
Sumitomo Rubber Industries Limited
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