Patent ID: 6520760
Filing Date: 2003-02-18
Classification: B29D,B60C

Abstract:
Mould for producing a tire made from a predetermined viscoelastic material, said mould havingA) a crown formed by radially movable sectors for moulding a tread strip and shoulders of said tire, and B) cheeks for moulding sidewalls and beads of said tire, C) said mould having a profile, in the plane of the meridian section, which has a predetermined maximum chord C, a predetermined maximum height H and a fitting line I, and is formed centrally by a base profile of one sector and laterally by profiles of said cheeks, D) said base profile of the sector having a central portion flanked by two connecting portions, which in turn are flanked by two lateral portions, E) each cheek profile having a total height Hg and having a first portion with a first radius of curvature Rfs and a second portion with a second radius of curvature Rfi, characterized in that F) the ratio between said first and second radius of curvature Rfs/Rfi ranges from 0.45 to 0.56.