Tire Comprising Carcass Reinforcement Cords Having Low Permeability And Variable Rubber Mixture Thicknesses

摘要

The invention relates to a tire with a radial carcass reinforcement, the said tire comprising a crown reinforcement itself capped radially by a tread. According to the invention, the metal reinforcing elements of the carcass reinforcement are wrapped cords which, in the test referred to as the permeability test, return a flow rate of less than 20 cm3/min and over the whole of the meridian profile of the tire, the thickness of rubber compound between the interior surface of the tire cavity and a point of a metal reinforcing element of the carcass reinforcement is between 1.0 mm and 3.0 mm.

主权项

1. A tire with a radial carcass reinforcement, made up of at least one layer of metal reinforcing elements, the tire comprising a crown reinforcement, capped radially by a tread, the said tread being connected to two beads by two sidewalls, wherein the metal reinforcing elements of at least one layer of the carcass reinforcement are wrapped cords which, in the test referred to as the permeability test, return a flow rate of less than 20 cm3/min and wherein, in a radial plane, over the whole of the meridian profile of the tire, the thickness of rubber compound between the interior surface of the tire cavity and the point of a metal reinforcing element of the carcass reinforcement closest to the said interior surface of the cavity is greater than 1.0 mm and less than or equal to 3.0 mm.