Tire with tread having improved snow and dry traction

A tread and tire technology, applied in the direction of tire tread/tread pattern, tire parts, transportation and packaging, etc., can solve problems such as failure to provide

Active Publication Date: 2014-11-26
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typically, all-season tires fail to provide snow and dry traction comparable to the predictable, high-strength performance of all-season tires

Method used

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  • Tire with tread having improved snow and dry traction
  • Tire with tread having improved snow and dry traction
  • Tire with tread having improved snow and dry traction

Examples

Experimental program
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Effect test

Embodiment Construction

[0088] Embodiments of the present invention include configurations that modify the stiffness of the tread elements found in the tread of a tire in order to break the compromise that occurs between snow and dry traction performance. It should be noted that these desired properties may be satisfactorily obtained depending on the application of one, all or any combination of the embodiments described below. Moreover, these techniques can be used on many tread elements including tread blocks and ribs.

[0089] See you again figure 1 , an overhead view of the footprint of the tire tread that was previously used on all-season tires can be seen. This is the 205 / 55R16 size tire currently marketed under the trademark PRIMACY MXV4 by the assignee of the present invention. The tire has six longitudinal grooves 114 , two middle rows 107 of tread blocks 108 , two central ribs 116 and four shoulder rows 118 of tread blocks 108 . The width of the longitudinal grooves is in the range of 8 ...

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PUM

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Abstract

This invention relates generally to tires having treads that have a configuration and/or properties for providing suitable snow and dry traction, and, more specifically, to a tire that has a tread that has a maximum value for sipe density in the contact patch, a minimum value for lateral groove density in the contact patch, and a minimum value for the longitudinal contact surface ratio. In certain embodiments, the pitch length of pitches or repeating units of tread geometry along the circumferential direction of the tire is within a certain range and the tread depth is below a specified value. Tires with treads having a configuration that falls within these design parameters exhibit a desirably good level of snow and dry traction.

Description

technical field [0001] The present invention relates generally to tires having treads of construction and / or properties for providing suitable snow and dry traction, and more particularly to treads having a maximum of sipe density in the contact patch, The tire with the minimum value of transverse groove density and the minimum value of longitudinal contact surface ratio. In certain embodiments, the segments or repeating units of the tread geometry along the circumference of the tire have a segment length within a certain range and a tread depth below a specified value. Tires with treads of construction that fall within these design parameters have desirably good levels of snow and dry traction. Background technique [0002] Those skilled in the art are familiar with the compromises inherent in designing a tire with good snow traction and good dry traction. For example, a typical technique for improving dry traction involves some increase in the stiffness of the tread so t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/12
CPCB60C2011/129B60C2011/0381B60C2011/0344B60C11/0306B60C2011/1213B60C11/033B60C11/0332B60C2011/133
Inventor C·吉雄O·皮法尔
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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