Patent ID: 6412531
Filing Date: 2002-07-02
Classification: B60C,Y10S

Abstract:
A tire having a tread, the tread comprising an upper surface and having at least one circumferentially extending groove formed therein, the groove being bounded by a bottom wall and opposing side walls, wherein each side wall is formed at the bottom wall with a first waveform extending in the circumferential direction, and at a level between the upper surface and the bottom wall is shaped with a second waveform extending in the circumferential direction, the first waveform and the second waveform being mutually out of phase so that each side wall has a contour of alternating protruding and recessed portions, the second waveform defining apexes of the protruding and recessed portions;wherein the groove is formed to be sufficiently wide so there is not normally contact between the opposing side walls so that the groove is neither a sipe nor an incision; wherein opposing edges of the groove at the upper surface are linear in the circumferential direction.