Patent ID: 6889733
Filing Date: 2005-05-10
Classification: B60C

Abstract:
1. A vehicle tyre having a profiled tread, the tread comprising: tread blocks separated by grooves, said tread blocks being located in at least some regions of a circumference of the tyre, wherein at least some of the tread blocks include tread block edges, wherein at least the tread block edges running into the tyre contact patch and extending at an angle to the central plane of the tyre are lowered over an entire length thereof with respect to the central plateau of the respective tread block, wherein the contour of the tread block boundary surface extending from a start of the lowering up to the base of the groove extends in section planes parallel to the central plane of the tyre in the form of an extended S-curve, and wherein the curvature of the S-curve continuously changes in accordance with an exponential function y(t) along an entire length of the S-curve, and wherein the exponential function y(t) is defined by the formula: with a parameter a being an amplitude factor of the exponential function y(t), with a parameter b being a distance between the start of the tread block boundary surface and the base of the groove, with a parameter τ being the distance between the Y-axis and the intersection of the tangent at the tread block boundary surface at t=0 and the line defined by y=a+b, and with t being the tread block length.