Pneumatic Tyre Tread Corner Rigidity and Wear

The patent applies local quality by forming protrusions specifically at the acute-angled corner regions where stiffness is reduced, while leaving other areas of the tread block unchanged. This localized reinforcement targets the specific problem area without affecting the overall tread block design, allowing differential stiffness compensation where needed most.

The patent changes the geometric parameters of the protrusions (height, width, position) to optimize both rigidity compensation and wear characteristics. By adjusting these parameters, the design achieves a balance where the protrusions provide sufficient structural support while maintaining acceptable wear uniformity across the tread block.

The patent segments the tread block by introducing grooves that divide the continuous rubber structure into separate regions. This segmentation creates acute-angled corner regions optimized for water drainage while the protrusions provide localized structural reinforcement to maintain stiffness in these segmented areas.

The patent employs asymmetric design in the groove configurations, creating acute-angled corners with specific geometric characteristics that favor water evacuation. The asymmetric groove angles and positions are optimized to channel water away from the contact patch while the protrusions compensate for the stiffness reduction in these asymmetric regions.

The patent applies curvature by rounding the corners and transitions in the groove design, particularly at the acute-angled corner regions. This curved geometry replaces sharp angles with smooth transitions, reducing flow separation and turbulence while maintaining the groove's water-channelling capability. The protrusions with rounded surfaces further minimize turbulence by providing smooth flow paths.

The patent converts the potentially harmful effect of sharp groove intersections (which create turbulence) into a beneficial feature by using the acute-angled corners to define precise water flow paths. The protrusions at these corners, while creating geometric complexity, actually streamline the flow by providing defined edges that guide water smoothly through the groove system, transforming what would be turbulent intersections into controlled flow channels.