Patent ID: 6736178
Filing Date: 2004-05-18
Classification: B29D,B60C,Y10T

Abstract:
A pneumatic tire comprisinga tread portion, a pair of sidewall portions, a pair of bead portions with a bead core therein, a carcass comprising a carcass ply extending between the bead portions and turned up around the bead core in each portion to form two turnup portions and a main portion therebetween, each said turnup portion extending radially outwardly and adjoining the main portion from a certain radial height h above the bead core so as to form an adjoining part, a bead core cover disposed between the carcass ply and the bead core for preventing cords of the carcass from directly contacting with the bead core, the bead core cover made of a textile fabric of organic fiber yarn having a thickness of from 940 dtex/2 to 1670 dtex/2, a space in each bead portion surrounded by the carcass ply main portion, the turnup portion and the bead core filled with a bead apex rubber, said bead apex rubber having a JIS-A hardness of 70 to 100 degrees and tapering radially outwardly from the bead core, the radially outer end of the bead apex disposed at said height h being in a range of from 0.1 to 0.3 times a height of the carcass.