Patent ID: 6792986
Filing Date: 2004-09-21
Classification: B60C,Y10S,Y10T

Abstract:
A pneumatic radial ply tire having a tread, a carcass with two sidewalls, two inextensible annular beads, a radial ply structure, a belt structure located between the tread and the radial ply structure, and an air impermeable innerliner, said tire characterized by:a crown stiffening underlay structure disposed radially inward of and adjacent the radial ply structure and radially outward of and adjacent the innerliner, the underlay structure being comprised of a single flat strip of material disposed in a plurality of spaced apart circumferential windings about the tire carcass; the flat strip being comprised of: a plurality of high modulus essentially inextensible cords embedded more or less parallel to one another within elastomeric matrix.