Patent ID: 6116310
Filing Date: 2000-09-12
Classification: B60C,Y10S

Abstract:
A pneumatic tire having a tread comprising; a land portion having a sidewall and at least one sipe formed therein, wherein a thickness of the sipe is alternately changed between a large size which defines a large thickness portion and a small size which defines a smaller thickness portion along a longitudinal and depth direction of the sipe, wherein large thickness portions and the smaller thickness portions of the sipe run in two directions and are inclined with respect to a radial direction of the pneumatic tire from a central portion of a block such that large thickness portions at opposite sides of the central portion are inclined to extend away from one another along the depth-wise direction of the sipe, an end portion of the sipe within the block in the depth direction being an enlarged portion, and some of said smaller thickness portions of the sipe being connected only to said enlarged portion and not opening to the surface of said land portion or said sidewall, a depth of said enlarged portion is larger than a width of each of the large thickness portions.