公开(公告)号：US20230001741A1

公开(公告)日：2023-01-05

申请号：US17757068

申请日：2020-12-16

Applicant: Pirelli Tyre S.p.A.

Inventor： Simone AGRESTI ,  Guido Luigi DAGHINI ,  Alessandro ASCANELLI

IPC: B60C9/00 ,  D07B1/06 ,  D07B5/00

Abstract: The invention relates to a metallic reinforcing cord (10) for tyres for vehicle wheels, comprising at least two metallic wires (11) twisted together with a predetermined twisting pitch (P). The metallic reinforcing cord (10) has a part load elongation greater than 3%, preferably greater than 3.5%.

公开(公告)号：US20200055350A1

公开(公告)日：2020-02-20

申请号：US16662459

申请日：2019-10-24

Applicant: PIRELLI TYRE S.P.A.

Inventor： Alessandro ASCANELLI ,  Roberto BOLZONI ,  Anna Paola FIORAVANTI ,  Stefano MONTESELLO

IPC: B60C11/12 ,  B60C11/03

Abstract: A car tyre having a tread that extends in axial direction for a width the tread including a central portion arranged across an equatorial plane, and two lateral portions opposed with respect to the central portion. The central portion is separated from the lateral portions of the tread by two circumferential grooves. The circumferential grooves have a width greater than about 6 mm. The central portion extends in axial direction for a width less than 20% of the width of the tread and includes a plurality of first sipes. Each lateral portion has a width greater than 30% of the width of the tread, and each lateral portion includes, furthermore, a plurality of transversal grooves. The transversal grooves of a lateral portion include at least a first inclined length that extends from a zone proximal to the respective circumferential grooves, moving away from the equatorial plane. The first inclined length has an inclination α≤60° with respect to equatorial plane. Each lateral portion includes a plurality of sipes. The density of the sipes decreases moving away from the equatorial plane.

公开(公告)号：US20170129289A1

公开(公告)日：2017-05-11

申请号：US15318188

申请日：2015-06-16

Applicant: PIRELLI TYRE S.P.A

Inventor： Alessandro ASCANELLI ,  Roberto BOLZONI ,  Anna Paola FIORAVANTI ,  Stefano MONTESELLO

IPC: B60C11/12 ,  B60C11/03

CPC classification number: B60C11/1236 ,  B60C11/0302 ,  B60C11/0306 ,  B60C11/033 ,  B60C2011/0341 ,  B60C2011/0348 ,  B60C2011/0355 ,  B60C2011/036 ,  B60C2011/0367 ,  B60C2011/0372 ,  B60C2011/0374 ,  B60C2011/0388 ,  B60C2011/1295

Abstract: A car tyre having a tread that extends in axial direction for a width the tread including a central portion arranged across an equatorial plane, and two lateral portions opposed with respect to the central portion. The central portion is separated from the lateral portions of the tread by two circumferential grooves. The circumferential grooves have a width greater than about 6 mm. The central portion extends in axial direction for a width less than 20% of the width of the tread and includes a plurality of first sipes. Each lateral portion has a width greater than 30% of the width of the tread, and each lateral portion includes, furthermore, a plurality of transversal grooves. The transversal grooves of a lateral portion include at 1east a first inclined length that extends from a zone proximal to the respective circumferential grooves, moving away from the equatorial plane. The first inclined length has an inclination α≦60° with respect to equatorial plane. Each lateral portion includes a plurality of sipes. The density of the sipes decreases moving away from the equatorial plane.