Heavy duty low profile pneumatic radial tires

Details Heavy duty low profile pneumatic radial tires Heavy duty low profile pneumatic radial tires

B - Operations, Transporting

60

C

152/83.1

B60C 3/04 (2006.01)

Patent

CA 1282306

HEAVY DUTY LOW PROFILE PNEUMATIC RADIAL TIRES ABSTRACT OF THE DISCLOSURE Tubeless type heavy duty low profile pneumatic radial tires are disclosed, which each comprise a radial carcass layer toroidally extending from one of beads to the other, and a belt comprising at least two plies successively closely piled on a crown portion of the carcass layer. The at least two plies have non- extensible cords arranged at a shallow angle with respect to an equatorial plane of the tire but intersecting between the plies through the tire equatorial plane. The tire uses a 15° rim as a design rim thereof. When the tire is assembled into the design rim and inflated at a normal internal pressure, a shape of the carcass line in a tire radial section meets the following inequalities (1) through (4). (1) 0.45 ? H/B ? 0.75 (2) (-0-12 H/B) + 0.79 ? ?/B ? (-0.12 H/B) + 0.85 (3) (0.1 H/B) + 1.11 ? B/J ? (0.1 H/B) + 1.15 (4) 0 < a/H ? 0.017 In the above, H, B, a, J and ? are the maximum sectional height of the carcass line from a diameter line of the design rim, the maximum axial width of the carcass line, a maximum distance between a straight line which is in parallel with a rotary axis of the tire in the radial section and intersects with the carcass line at two points which are separated from each other by a distance: L=0.96B-0.77H, a width of the rim, and an axial width of a zone where the cords between the belt plies intersect with one another, respectively.

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