PNEUMATIC TIRE Russian patent published in 2017 - IPC B60C9/08 B60C15/06 B60C15/00 B60C13/00 

FIELD: transportation.

SUBSTANCE: when looking on the tire, which is mounted on a predetermined rim, inflated to an internal pressure of 50 kPa, and placed in the unloaded condition, at the section from the meridional direction of the tire, the place corresponding 1.30×Hf, on the outer surface of the part representing the sidewall, by taking the rim bead height (Hf), which is the predetermined rim, as a measurement reference, is defined as a point (P), the base of the normal (L), drawn from the point (P) to carcass line in the main part (131) of the casing layer (13), is defined as a point (M) and the point of normal intersection (L) and the carcass line in the bent part (132) of the layer (13) is defined as a point (T). The distance (a) mm between the point (M) and the point (T), the distance (b) mm between the point (T) and the point (P) and a predetermined load (x) kN are in such a ratio that a=0.019×x+13.3 and b=0.052×x+21,6, with a tolerance of not less than 0% and not more than 20%.

EFFECT: increased strength of tire.

15 cl, 5 dwg