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Tyre comprising a protective reinforcement

A technology of reinforcements, reinforcement elements, used in the tires of tractors, trailers or road buses), vehicles (such as trucks), which can solve the problems of tire cost and weight increase, and achieve the effect of high resistance

Active Publication Date: 2013-05-15
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] The properties of these protective layers, and more particularly of the reinforcing elements that make up them, cause a significant increase in the cost and weight of the tire

Method used

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  • Tyre comprising a protective reinforcement
  • Tyre comprising a protective reinforcement
  • Tyre comprising a protective reinforcement

Examples

Experimental program
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Effect test

Embodiment Construction

[0091] exist figure 1 , a tire 1 of size 315 / 70 R 22.5 comprises a radial carcass reinforcement 2 anchored around a bead wire 4 in two beads 3 . The carcass reinforcement 2 is formed of a single layer of metal cords. The carcass reinforcement 2 is hooped by a crown reinforcement 5 , which is itself covered by a tread 6 .

[0092] Such as figure 2 As shown in , the crown reinforcement 5 is formed radially from the inside to the outside by:

[0093] - a first working layer 51 formed of inextensible non-wrapped 11.35 metal cords continuous over the entire width of the ply and oriented at an angle of 18°,

[0094] - a layer of circumferential reinforcing elements 52 formed of steel 21x23 metal cords of the "dual-mode" type,

[0095] - A second working layer 53 formed of inextensible non-wrapped 11.35 metal cords continuous over the entire width of the ply and oriented at an angle of 18° and aligned with the metal cords of the first working layer cross,

[0096] - A multila...

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Abstract

The invention relates to a tire with a radial carcass reinforcement comprising a crown reinforcement, itself radially capped with a tread, comprising at least two circumferentially continuous cutouts, the said tread being connected to two beads via two sidewalls. According to the invention, the crown reinforcement comprises at least one axially continuous multilayer laminate, the said laminate comprising at least one multiaxially stretched thermoplastic polymer film positioned between and in contact with two layers of rubber composition, and in a meridian plane, the axial ends of the laminate being axially on the outside of the axially outermost point of two different circumferentially continuous cutouts.

Description

technical field [0001] The present invention relates to tires with radial carcass reinforcement, and more particularly to tires intended to be mounted to vehicles carrying heavy loads and traveling at sustained speeds, such as vans, tractors, trailers or road buses. Background technique [0002] Usually, in tires of the heavy vehicle tire type, the carcass reinforcement is anchored on either side in the bead area and is radially covered by a crown reinforcement consisting of at least two layers, the at least two layers Overlapping and formed by threads or cords parallel in each layer and crossing from one layer to the next, forming an angle with the circumferential direction of between 10° and 45°. Said working layer forming the working reinforcement may further be covered by at least one layer, called protective layer and formed by reinforcing elements, advantageously metallic and extensible, called elastic elements. It may also contain layers of wires or cords of low exte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C9/18
CPCB60C2009/2048B60C11/00B60C9/0007B60C2009/2035B60C9/18B60C9/22B60C2200/06
Inventor L·塞尔西
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN