Vehicle tires
AssigneePneumatiques, Caoutchouc Manufacture et Plastiques Kleber-Colombes
InventorsHenri Greiner, Claude A. Lefaucheur
Life of this patent
Estimating the term…
Abstract
The present invention relates to vehicle tires of the kind having a crown belt formed from at least one pair of plies made of cords which are orientated in directions which intersect at small angles, and having sidewalls each reinforced by at least one strong half-ply making up a carcass which is interrupted under the belt. The invention which consists in a combination of the following features: (a) the tire has a low cross-section in which the ratio of height over width is less than 0.8, for example between 0.3 and 0.7, and, (b) the half carcass-plies are connected together in the area of the tire crown of the tire by a layer which has a strength of less than 50 daN per centimeter of width for an extension of 10% and whose elastic extensibility is at least 10%.
Claims4
A vehicle tire having a low cross-section in which the ratio of height over width is less than 0.8, a crown including a tread and a crown belt formed from at least two plies made of cords which are oriented in directions which intersect at small angles, beads, side walls which are each reinforced by at least one strong half-carcass ply which extends from a respective said bead to a lateral region of said crown, said half-carcass ply being interrrupted beneath said crown belt and being separated between the lateral regions of said crown by a distance which is equal to at least one third of the width of said crown belt, and a supporting layer which interconnects said half-carcass plies between the lateral regions of said crown, which has a strength of less than 50 daN per centimeter of width for an extension of 10% and whose elastic extensibility is at least 10%.
Dependencies are inferred from the claim text.