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Tyre comprising a tread containing circumferential reinforcing elements in the sublayer

A technology of reinforcing elements and crown reinforcements, applied in tire tread/tread pattern, tire parts, vehicle parts, etc., can solve the problem of reducing tire rolling resistance and achieve excellent reinforcement effects

Active Publication Date: 2019-07-16
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] None of these teachings allow for the use of high-grip rubber compounds for the tread without causing rapid wear of the tire under heavy loads or without causing the tire's rolling resistance to decrease too drastically

Method used

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  • Tyre comprising a tread containing circumferential reinforcing elements in the sublayer
  • Tyre comprising a tread containing circumferential reinforcing elements in the sublayer
  • Tyre comprising a tread containing circumferential reinforcing elements in the sublayer

Examples

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Embodiment Construction

[0033] figure 1 A tire 1 is shown comprising a crown 2 and two sidewalls 3 each connected to a bead 4 . A crown 2 is connected on each side to the radially outer end of each of the two sidewalls. The crown 2 includes a tread 5 . figure 1 shows the equatorial plane CP, perpendicular to the axis of rotation of the tyre, halfway between the two beads 4 (mounted on the rim) and passing through the middle of the axial width of the crown 2; figure 1 The axial X, circumferential C and radial Z directions on the equatorial plane CP are also indicated by arrows located directly above the tread 5 .

[0034] Each bead has a bead wire 40 . A carcass ply 41 is wound around each bead wire 40 . The carcass ply 41 is radial and is formed, in a manner known per se, of cords; in this implementation, of textile cords; these cords are arranged substantially parallel to each other and formed at angles 80° and 80° to the equatorial plane CP. The way of the angle between 90° extends from one be...

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Abstract

Tire (1) comprising two beads (4), two sidewalls (3) connected to the beads and a crown (2) connected to the ends of the two sidewalls, the crown comprising a crown reinforcement (6) and a tread (5) radially on the outside of the crown reinforcement (6), said tread (7) comprising a plurality of tread blocks (71), at least two radially superposed layers: a sub-layer (7S) covering the crown reinforcement (6) and a main layer (7P) radially on top of the crown reinforcement (6), the sub-layer comprising a plurality of circumferential reinforcing elements (73) made up of a rubber compound of a rigidity that is higher than the rigidity of the rubber compound of the rest of the sub-layer, the circumferential reinforcing elements (73) extending radially from the radially exterior surface of said crown reinforcement (6) toward the interface between the sub-layer (7S) and the main layer (7P), said circumferential reinforcing elements having axial width that decreases progressively in a radiallyoutwards direction.

Description

technical field [0001] The present invention relates to tyres, and more particularly to tyres, the grip properties of which are improved. [0002] In general, a tire is an object whose geometry exhibits rotational symmetry about an axis of rotation. The tire consists of two beads intended to be mounted on the rim; it also consists of two sidewalls connected to the beads, and a crown containing a tread intended to come into contact with the ground, said crown having the same A first side connected to the radially outer end of one of the sides and a second side connected to the radially outer end of the other of the two sidewalls. [0003] The composition of a tire is generally described by its constituent members shown in a meridian plane, ie a plane containing the tire's axis of rotation. Radial, axial and circumferential directions mean directions perpendicular to the axis of rotation of the tire, parallel to the axis of rotation of the tire and perpendicular to any meridia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/00B60C11/18
CPCB60C2011/0025B60C2011/0033B60C2011/0016B60C11/005B60C11/18B60C11/0075
Inventor F·佩兰
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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