US 12,285,981 B2
Tire
Luca Spiri, Rome (IT); and Brenda Cecilia Barrios Perez, Rome (IT)
Assigned to Bridgestone Europe NV/SA, Zaventem (BE)
Appl. No. 17/919,361
Filed by Bridgestone Europe NV/SA [BE/BE], Zaventem (BE)
PCT Filed Apr. 16, 2021, PCT No. PCT/EP2021/059907
§ 371(c)(1), (2) Date Oct. 17, 2022,
PCT Pub. No. WO2021/209598, PCT Pub. Date Oct. 21, 2021.
Claims priority of application No. 20170043 (EP), filed on Apr. 17, 2020.
Prior Publication US 2023/0150311 A1, May 18, 2023
Int. Cl. B60C 9/18 (2006.01); B60C 9/22 (2006.01); B60C 9/28 (2006.01); B60C 11/03 (2006.01); B60C 9/20 (2006.01)
CPC B60C 9/28 (2013.01) [B60C 11/03 (2013.01); B60C 2009/208 (2013.01); B60C 2009/2093 (2013.01); B60C 2011/0348 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A tire comprising:
a carcass;
a first belt, a second belt, a third belt, and a fourth belt radially superimposed to each other, wherein the first belt is at an innermost position and the fourth belt is at an outermost position with respect to the other belts, each of the first to fourth belts having a respective belt cord angle, wherein at least one of the first to fourth belts is a high elongation belt applied as a single cord strip radially externally to said carcass, said high elongation belt embedding a cord provided with a stiffness module variable between about 3,000 MPa for a strain value of said cord ranging from 0 to about 2% and 125,000 MPa for a strain value of said cord higher than about 2%; and
an external tread portion provided with two or more grooves extending according to a circumferential direction around said tread portion, wherein an axial width of each of the two or more grooves, measured according to an axial direction parallel to an axis of rotation of said tire and orthogonal to said circumferential direction, is equal to or lower than 2 millimeters,
wherein:
the first belt cord angle equals from 35° to 40° measured counterclockwise from the circumferential direction;
the second belt cord angle equals about 0° from the circumferential direction;
the third belt cord angle equals from 20° to 28° measured clockwise from the circumferential direction; and
the fourth belt cord angle equals from 40° to 60° measured counterclockwise from the circumferential direction.