The invention relates to a tyre (1) with a tyre pressure higher than or equal to 6 bars, consisting of two layers (2, 6) of polyester reinforcing elements, the first layer (2) being turned back over bead cores (3) and the second layer (6) extending from one bead to another, the ends (7) thereof being radially inside in relation to the radially outermost point (8) of the bead core (3) in each bead. An additional layer (12) of polyester reinforcing elements, the radially inner end (13) of which is in a zone which is radially defined on the outside by an axially oriented straight line which is radially at a distance from the radially outermost point (8) of the bead core (3) by a distance equal to twice the height of the bead core (3), is present in each of the sidewalls, the ratio of the linear density of reinforcing elements per unit of width of the second layer (6) of carcass ply to the linear density of reinforcing elements per unit of width of the first layer (2) of carcass ply being between 75 and 100%, and the linear density of reinforcing elements per unit of width of the additional layer (12) being less than or equal to the linear density of reinforcing elements per unit of width of the first layer (2) of carcass ply.
PNEUMATIQUE COMPORTANT UNE ARMATURE DE CARCASSE FORMEE DE DEUX COUCHES ASSOCIEE A UNE COUCHE ADDITIONNELLE
2018-07-13
Patent
Electronic Resource
French
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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