Patent ID: 6814119
Filing Date: 2004-11-09
Classification: B29D,B60C,Y10T

Abstract:
A tire for a vehicle wheel, comprising:a carcass structure having at least one carcass ply provided with end flaps in engagement with respective annular anchoring structures disposed coaxially with a geometric rotation axis of the tire at axially-spaced-apart positions with respect to each other; a belt structure applied to the carcass structure at a radially-outer position of the carcass structure; a tread band applied to the belt structure at a radially-outer position of the belt structure; at least one pair of sidewalls applied to the carcass structure at opposite side positions of the carcass structure; and at least one pair of resilient stiffening inserts incorporated into the carcass structure, each resilient stiffening insert at one of the sidewalls; wherein the at least on carcass ply comprises: axially-inner strip lengths, wherein the axially-inner strip lengths are circumferentially distributed around the geometric rotation axis and each extend in a U-shaped configuration around a cross-section outline of the carcass structure to define two side portions spaced apart from each other in an axial direction and a crown portion extending at a radially-outer position between the side portions of the axially-inner strip lengths, axially-outer strip lengths, wherein the axially-outer strip lengths are circumferentially distributed around the geometric rotation axis and each extend in a U-shaped configuration around the cross-section outline of the carcass structure to define two side portions spaced apart from each other in an axial direction and a crown portion extending at a radially-outer position between the side portions of the axially-outer strip lengths, wherein the resilient stiffening inserts are each axially interposed between the side portions of the axially-inner strip lengths and the side portions of the axially-outer strip length, and wherein the carcass structure and resilient stiffening inserts support the vehicle load when the normal inflation pressure of the tire fails.