US 11,787,235 B2
Tire comprising a carcass reinforcement layer having improved endurance properties
Nathalie Salgues, Clermont-Ferrand (FR); Auriane Frisch, Clermont-Ferrand (FR); and Arnaud Gommez, Clermont-Ferrand (FR)
Assigned to COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand (FR)
Appl. No. 16/764,045
Filed by COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN, Clermont-Ferrand (FR)
PCT Filed Nov. 7, 2018, PCT No. PCT/FR2018/052752
§ 371(c)(1), (2) Date May 14, 2020,
PCT Pub. No. WO2019/097140, PCT Pub. Date May 23, 2019.
Claims priority of application No. 1760864 (FR), filed on Nov. 17, 2017.
Prior Publication US 2020/0384808 A1, Dec. 10, 2020
Int. Cl. B60C 1/00 (2006.01); B60C 9/20 (2006.01); C08F 36/08 (2006.01); C08K 3/04 (2006.01); C08K 3/22 (2006.01); C08K 3/36 (2006.01); C08K 9/02 (2006.01); C08L 7/00 (2006.01); B60C 9/02 (2006.01)
CPC B60C 1/0041 (2013.01) [B60C 1/0016 (2013.01); B60C 9/2006 (2013.01); C08F 36/08 (2013.01); C08K 3/04 (2013.01); C08K 3/22 (2013.01); C08K 3/36 (2013.01); C08K 9/02 (2013.01); C08L 7/00 (2013.01); B60C 2009/0276 (2013.01); B60C 2200/06 (2013.01); C08K 2003/2227 (2013.01); C08K 2201/006 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A tire forming an internal cavity intended to accept inflation air, comprising:
a radial carcass reinforcement, made up of:
two skim layers of elastomer compound containing a reinforcing filler made up of at least carbon black; and
at least one layer of metal reinforcing elements inserted between two skim layers of elastomer compound containing a reinforcing filler made up of at least carbon black;
two beads;
two sidewalls;
a tread connected to the two beads by the two sidewalls;
a crown reinforcement that is capped radially by the tread;
wherein a tensile elastic modulus at 10% elongation of at least a skim layer closest to the internal cavity of at least the carcass reinforcement layer is less than 8.5 MPa and
wherein at least a radially inner skim layer of at least the carcass reinforcement layer arranged closest to the internal cavity has a macrodispersion value Z greater than 85.