Evolving tread for a tyre

A tread and tire technology, applied to tire tread/tread pattern, tire parts, vehicle parts, etc., can solve the problems of increased wear speed, reduced tread wear performance, increased deformation, etc.

Active Publication Date: 2016-07-20
OCIETE DE TECH MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the presence of grooves, the reduction in stiffness leads to an increase in deformation and to a reduction in the wear be

Method used

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  • Evolving tread for a tyre
  • Evolving tread for a tyre
  • Evolving tread for a tyre

Examples

Experimental program
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Embodiment Construction

[0035] In order to make the drawings easier to understand, the same reference numerals have been used to describe alternative forms of the invention, wherein these reference numerals designate elements of the same kind, either structurally or functionally.

[0036] figure 1 is a partial view of the tread surface of a tire tread according to the invention when new.

[0037] Should figure 1 A portion of the tread 10 when new is shown intended to equip a heavy vehicle tire of size 315 / 70R22.5.

[0038] This tread 10 has a tread surface 100 intended to contact the road during running over a width W equal to 290 mm.

[0039] The tread is provided with five grooves 1 , 2, 3, 4, 5 generally circumferentially oriented. A central circumferential groove 3 is located on the midplane of the tread; this central groove 3 has an average width equal to 6 mm. On both sides of this middle groove 3, there are two wave-shaped grooves 2, 4 which have undulations in the thickness of the tread a...

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PUM

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Abstract

Tread (10) for heavy goods vehicle tyre comprising, over a first axial part (M) a groove (2, 4) that is wavy in the thickness and continuous in a first direction, and grooves (6, 7) that are wavy in the thickness and continuous in a second direction and connected to a groove (2, 4) that is wavy in the first direction and, over a second axial part (B) of the tread a groove (1, 5) that is wavy in the thickness and continuous in a third direction and grooves (6, 7) that are wavy in the thickness and continuous in a fourth direction and connected to a groove (1, 5) that is wavy in the third direction, this tread being such that, when new, the parts that are open onto the tread surface in the first axial part (M) are connected to one another to form a continuous surface network and in that the parts that are open onto the tread surface in the second axial part (B) are discontinuous with one another and, once a partial wear state has been crossed, the parts that are open onto a new tread surface (100') in the second axial part (B) are connected to one another to form a continuous surface network and in that the parts that are open onto the new tread surface (100') in the first axial part (M) are discontinuous with one another.

Description

technical field [0001] The present invention relates to tire treads, more particularly to the design of the tread pattern of these treads and to tires provided with such treads which have a permanent ability to drain away the standing water present on the road in rainy weather The ability of these treads has improved wear properties. Background technique [0002] As is known, rainy driving conditions require water to be removed as quickly as possible from the contact patch in which each tire contacts the road in order to ensure the tread is in contact with the road. The water that is not pushed forward of the tire flows partly along the grooves and sipes formed in the tire tread in the circumferential direction or in the lateral direction. [0003] A cut is generally referred to as a groove or a sipe and corresponds to a space defined by walls of material facing each other and moving away from each other at a non-zero distance (referred to as "cut width"). [0004] A groov...

Claims

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Application Information

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IPC IPC(8): B60C11/12B60C11/03
CPCB60C11/125B60C11/1281B60C11/0323B60C11/033B60C11/0332B60C11/1236B60C2011/0334B60C2011/0353B60C2011/0365
Inventor S·康邦D·巴尔丹J·勒热纳
Owner OCIETE DE TECH MICHELIN
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