Patent ID: 7238248
Filing Date: 2007-07-03
Classification: B29D,B60C,Y10T

Abstract:
1. A method of building a tyre, comprising: forming a carcass structure comprising at least one carcass ply; applying a belt structure at a radially external position with respect to the at least one carcass ply; applying a pair of sidewalls at an axially external position with respect to side surfaces of the at least one carcass ply; applying a tread band to the belt structure at a radially external position of the belt structure; and applying annular stiffening inserts against the side surfaces of the at least one carcass ply before applying the sidewalls; wherein ends of the at least one carcass ply engage respective circumferentially inextensible annular anchoring structures, wherein each sidewall extends radially away from one of the annular anchoring structures, wherein each annular insert extends from one of the annular anchoring structures to a corresponding edge of the belt structure, and wherein each annular insert is formed by winding at least one continuous thread element into concentric coils.