Unlock instant, AI-driven research and patent intelligence for your innovation.

Reinforcing element for tires comprising sacrificial threads

A technology of reinforcing elements and threads, which is applied to the reinforcement layers of pneumatic tires, tire parts, vehicle parts, etc., can solve problems such as loss of adhesion of rubber compositions, deterioration of mechanical properties of bead threads, and deterioration of outer layer threads, etc. The effect of good adhesion levels

Active Publication Date: 2018-12-14
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Under particularly wet conditions, however, a rapid degradation of the inner but most importantly the outer wires due to the action of corrosive agents was observed, causing on the one hand a deterioration of the mechanical properties of the bead wire and, on the other hand, Appreciable loss of bond between adjacent rubber compositions embedded with bead wires

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Reinforcing element for tires comprising sacrificial threads
  • Reinforcing element for tires comprising sacrificial threads
  • Reinforcing element for tires comprising sacrificial threads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0059] In the figure reference points X, Y, Z are shown which correspond respectively to the usual axial direction (X), radial direction (Y) and circumferential direction (Z) of the tyre.

[0060] figure 1 A tire indicated by the general reference numeral 10 according to the invention is shown in . In this case, the tire 10 is intended to be fitted on a land vehicle, here a passenger vehicle with dimensions 215 / 70R16. The tire 10 is substantially axisymmetric about a main axis substantially parallel to the axis X.

[0061] The tire 10 is reinforced by a crown 14 , two sidewalls 16 and two beads 18 each of which is reinforced with an annular bead wire 20 . The crown 14 is covered by a tread 21 . The carcass reinforcement 22 is wound around the two bead wires 20 in each bead 18 and comprises a turn-up 24 disposed towards the exterior of the tire 10 shown here fitted on a rim 26 . The carcass reinforcement 22 is composed of at least one ply reinforced with cords. The carcass...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The reinforcing element (20) for a tyre (10) comprises one or more steel threads (F0, F1, F2a, F2b) and: - a first coating (R1) of a first portion of the or one of the steel threads (F2a) made from a first metal or from a first alloy of metals, the first metal or at least one of the metals of the first alloy belonging to a first oxidizing agent / reducing agent pair, the standard potential E°1 of which is strictly less than the standard potential E°0 of the Fe2+ / Fe couple, and - a second coating (R2) of a second portion of the or one of the steel threads (F0, F1, F2b) made from a second metal or from a second alloy of metals, the second metal or the second alloy of metals being respectively different from the first metal or from the first alloy of metals.

Description

technical field [0001] The invention relates to reinforcing elements for tires. It is suitable for any type of tire on any type of vehicle. Background technique [0002] A tire usually comprises two circumferential beads intended to allow the tire to be fitted on a rim. Each bead includes an annular reinforcing bead wire. [0003] Tires comprising bead wires having an inner layer and an outer layer are known in the prior art. The inner layer consists of steel wires. The wire itself is bent and its two free ends are welded so as to form a substantially annular loop. The outer layer also includes a steel wire helically wound in a plurality of circumferential coils around the inner layer. The two free ends are joined together by a coupling sleeve. [0004] Each wire of the inner and outer layers is coated with a coating of a copper-tin alloy, here bronze. The coating is capable of improving the adhesion between the bead wire and the bead wire-embedded rubber composition ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B60C9/00
CPCB60C9/005B60C2009/0014
Inventor A·拉尔雅内O·塔德若啊J·巴布窦A-L·蒂利耶P·贝尔托
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN