Patent ID: 7562683
Filing Date: 2009-07-21
Classification: B60C,Y10S

Abstract:
1. A pneumatic tire formed at its tread surface with a block line comprising a plurality of substantial blocks, wherein the block line comprises a first substantial block having a tip end which is tapered as viewed from above, and a second substantial block on each side of the first substantial block having a sidewall surface opposed to a sidewall surface of a tip end of the first substantial block, the tip end of the first substantial block is formed with a taper cut portion whose land portion height is gradually reduced toward the tip end side, and a bridge portion which is bifurcated from the tip end of the taper cut portion and is connected to the sidewall surface of the second substantial blocks disposed on each side at a substantially constant land portion height from a tip end of the taper cut portion, wherein the bridge portion has a height being 10-50% of the land portion height of the first substantial block, and wherein substantially the entire upper surface of the bridge portion, which extends between the second blocks and is connected on one side thereof to the tip end, is substantially parallel to the tread surface.