Double dome convex tire tread block or tread rib

摘要

Different sizes of first and second domes are stacked, one on the top of the tire rib or tread block and the other on the surface. The lower first dome covers a wider area in the tread. In one embodiment, the first dome covers the entire tread block or extends across the rib laterally. The higher second dome is located on the top surface of the first dome and extends only over the portion of the first dome. The first and second domes are concentric or offset. Alternatively, the first and second domes are elliptical with a major axis in the ellipse, the major axis being oriented to be optimal for a particular tread block or rib shape. There may be. [Selection] Figure 5