Patent ID: 6866076
Filing Date: 2005-03-15
Classification: B60C,Y10S

Abstract:
1. A tire comprising: a tread; grooves formed in said tread for defining a plurality of blocks; and a plurality of smaller grooves formed in the walls of at least one of said grooves formed in said tread, so as to extend in a longitudinal direction of said at least one groove, wherein said smaller grooves have a depth set within a range of 0.01 to 0.5 mm and a pitch set within a range of 0.01 to 0.5 mm, wherein the walls in the vicinity of the intersection of said groove and another said groove are provided with turbulence generating zones for generating minute turbulences in a fluid flowing in the vicinity of the groove walls thereby to suppress separation of the fluid flowing in said groove, and wherein said turbulence generating zones have a multiplicity of recesses having a diameter within a range of 0.01 to 0.5 mm and a depth within a range of 0.01 to 0.5 mm.