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Protective element for a tread

A technology for protecting components and treads, applied in tire parts, tire treads/tread patterns, vehicle parts, etc., to solve the problems of strip-shaped tread technology, unsustainable tread, and rupture of rubber compounds.

Inactive Publication Date: 2006-07-19
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This construction has been well proven effective in use; however, it should be noted that under current conditions of use, when the treads, and more specifically the axially outer edges of these treads, are subjected to shocks during driving, they may Causes cracking of the rubber compound at the bottom of the circumferential narrow grooves of the spacer edge ribs and sacrificial ribs
In order to reduce the risk of breakage, it is known to limit the depth of these grooves, but in this case the technical effect of the sacrificial ribs cannot be sustained throughout the life of the tread

Method used

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  • Protective element for a tread

Examples

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Embodiment Construction

[0030] In FIG. 1 , a partial view of a tread 1 according to the invention can be seen. This partial cross-sectional view shows a longitudinal groove 2 of depth H separating the edge rib 3 of the tread 1 from another rib 3' of the tread pattern.

[0031] In order to prevent irregular wear of the outer surface 30 of this edge rib 3 , more specifically to prevent its axially outer sharp edges 31 from being rounded, a so-called "guard" rib 4 is arranged axially on the outside. The bezel 4 has an outer contact surface 41 intended to come into contact with the road surface during driving, the difference in rolling radius measured with respect to the axis of rotation of the bezel 4 and the edge rib 3 leads to an increased Sliding on the rib 4 is protected, causing significant wear on this rib, with a corresponding reduction in irregular wear on the edge rib 3 .

[0032]The protection strip 4 has an offset of f in the tread thickness direction, and the depth formed by the relative de...

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PUM

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Abstract

A tread (1) comprises a tread design formed of relief elements (3, 31) delimited by grooves (2) of which at least one of these grooves is oriented in the longitudinal direction of the tread and has a depth H. Said tread comprises, axially to the exterior of at least one side thereof, at least one relief element (4), called a protective element, which has a contact surface (41) that is offset toward the interior of the tread with regard to the contact surface (30) of the relief element(s) (3), and which protects the relief element(s) against irregular wear. Relief element (4) is joined to the protected element (3) by means of a rubber bridge element (6) that joins the lateral faces (42, 32) vis-a-vis said elements.

Description

technical field [0001] The object of the present invention is to improve the treads of tires for heavy vehicles; it relates in particular to treads having a tread pattern consisting of substantially rib or block treads. ) and a tread pattern element combined with a strip pattern. [0002] The invention is particularly contemplated for radial-carcass tires for non-drive shafts of heavy vehicles. Background technique [0003] Such tires generally comprise a carcass reinforcement projecting radially outwardly of a crown band which itself protrudes above a tread having a tread pattern consisting essentially of generally circumferential ribs Composed of tread patterns. Furthermore, it is known (US 4,480,671) to have on each side region of such a tread a side rib located on the axially outer side of the tread, and the meridian profile of the side rib is substantially parallel to the main surface forming the tread. The meridian profile of the geometric profile of the geometric e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/01B60C11/117B60C11/13
CPCB60C11/01B60C2011/013B60C11/13B60C11/0323B60C11/032
Inventor J·米利诺罗坡茨
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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