Utility Vehicle Tire Tread Geometry for Crack-Resistant Grip

The patent applies curvature by designing the depression surfaces to be rounded and smooth rather than sharp or angular. The curved surfaces transition gradually into the channel flanks and shoulder flanks, eliminating stress concentration points that would otherwise occur at sharp edges or corners. This curvature principle directly resolves the contradiction by maintaining grip resistance through surface geometry while preventing crack initiation at the channel base.

The patent implements local quality by creating depressions with specific geometric characteristics at critical locations (channel flanks and shoulder flanks) while leaving other tread regions unchanged. The depressions are strategically positioned to provide local stress relief and crack prevention exactly where needed, without compromising the overall gripping structure of the tread. This localized modification allows the tread to maintain high grip resistance while specifically addressing crack susceptibility at vulnerable points.

The curved surfaces of the depressions are designed to maintain their geometric integrity and stress-distributing properties even as the tread wears. The smooth transitions and rounded features are less susceptible to wear-induced degradation compared to sharp edges, allowing the depressions to continue providing stress relief and crack prevention throughout the tread's service life, including in advanced wear states.

The depressions are pre-formed into the tread structure during manufacturing, establishing stress distribution patterns and crack prevention features before the tread begins to wear. This preliminary structuring ensures that the stress-relief geometry is already in place to counteract wear-induced stress concentrations, maintaining crack resistance throughout the tread's operational life regardless of wear state.