| 摘要 |
FIELD: motor vehicle industry.SUBSTANCE: tyre has large number of cavities at the tyre sides. Contour of each cavity (62) contains first arc (66) of circle, second arc (68) of circle, first connecting line (70) and second connecting line (72). Curvature radius (R2) of the second arc (68) of circle is larger the curvature radius (R1) of the first arc (66) of circle. The first connecting line (70) is straight line. The first connecting line (70) connects one end (78) of the first arc (66) of circle with one end (80) of the second arc (68) of the circle. The second connecting line (72) is straight line. The second connecting line (72) connects another end (74) of the first arc (66) of circle with another end (76) of the second arc (68) of the circle. Length (L) of the longest section of the straight line, that can be plotted within the contour of each cavity (62), is preferably larger sum of the curvature radius (R1) of the first arc (66) of circle and the curvature radius (R2) of the second arc (68) of the circle.EFFECT: increased durability of tyre.7 cl, 8 dwg, 2 tbl |
