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Surface state of the tread of a tyre

A tire tread and tread technology, applied in tire tread/tread pattern, tire parts, vehicle parts, etc., can solve problems such as poor tread performance

Inactive Publication Date: 2013-02-13
OCIETE DE TECH MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] While it is possible to use devices that allow this drainage once the tire has experienced an initial degree of wear (in particular, once the cavity initially located within the tread has reached the tread surface), it has been found that the tire will surface may have shown poor performance

Method used

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  • Surface state of the tread of a tyre
  • Surface state of the tread of a tyre
  • Surface state of the tread of a tyre

Examples

Experimental program
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Effect test

Embodiment Construction

[0023] Figure 1 shows a contact face 40 of a tread element 4 of rectangular shape delimited by ridges 41, 42, 43 and 44, intended to come into contact with the road surface during rolling.

[0024] The contact surface comprises a plurality of contact raised lines consisting of three sets of contact lines 7, 8, 9 respectively parallel to three different directions, two of which are parallel to the ridge.

[0025] These contact lines 7, 8, 9 intersect each other in such a way as to define substantially rectangular shaped surface portions. Furthermore, within each triangle and except for the point touching the line, all other points are set back from the plane through the sides of the triangle to form various small cavities 50 . In this way, a kind of division of the outer surface of the block 4 is formed, whereby all points on this surface, except the point of contact line, are offset towards the inside of the tread. Thus, during rolling, the element comes into contact along i...

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PUM

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Abstract

A tire tread provided with a plurality of grooves delimiting blocks and / or ribs and having an average depth H. This tread has a tread surface designed to come into contact with the roadway only along a plurality of raised contact lines. The raised contact lines intersect one another to delimit, on the tread surface, a plurality of contiguous first cavities each formed by a wall which is recessed radially inwardly from the tread surface. The walls of the first cavities are intersected by respective second cavities situated radially.

Description

technical field [0001] The field of the invention is passenger vehicle tire treads, and more specifically the design of the rolling surfaces of such treads. Background technique [0002] Winter driving on roads covered with snow and ice requires treads with many ridges and grooves in order to provide better grip by storing and / or removing fluid or solid particles present on these roads. [0003] Scavenging means the removal of fluids or solid particles from the direct contact between the tread and the road surface so that the material from which the tread is made is in direct contact with the road surface. [0004] While it is possible to use devices that allow this drainage once the tire has experienced an initial degree of wear (in particular, once the cavity initially located within the tread has reached the tread surface), it has been found that the tire will Surfaces may have shown poor performance. Contents of the invention [0005] It is therefore an object of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C11/03B60C11/117
CPCB60C11/032B60C11/11
Inventor N·成田
Owner OCIETE DE TECH MICHELIN
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