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Pneumatic tires comprising a radial or bias ply carcass having cords of large diameter

A tire and carcass technology, applied in the reinforcement layer, tire parts, tire tread/tread pattern of pneumatic tires, etc., can solve problems such as unfavorable performance and high cost, and achieve increased robustness, easy production, and rapidity. and production effects

Active Publication Date: 2020-05-19
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These solutions are costly and detrimental to performance due to the use of more material than is required for the tire to work properly

Method used

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  • Pneumatic tires comprising a radial or bias ply carcass having cords of large diameter
  • Pneumatic tires comprising a radial or bias ply carcass having cords of large diameter
  • Pneumatic tires comprising a radial or bias ply carcass having cords of large diameter

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Experimental program
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Embodiment Construction

[0069] definition

[0070] This article uses the following definitions:

[0071] - "longitudinal or circumferential direction" is the direction in which the tire travels,

[0072] - "radial direction" is a direction intersecting the axis of rotation of the tyre, perpendicular to it,

[0073] - "axial direction" is a direction parallel to the axis of rotation of the tyre,

[0074] - "radially inner" means closer to the axis of rotation of the tyre,

[0075] - "radially on the outside" means further from the axis of rotation,

[0076] - "equatorial or median plane" means the plane perpendicular to the axis of rotation of the tire and dividing the tire into two substantially equal halves,

[0077] - "transverse direction of the tyre" means a direction parallel to the axis of rotation,

[0078] - "radial or meridian plane" means a plane containing the axis of rotation of the tyre.

[0079] The expression "partially interrupted" means that the radially upper end of the protru...

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Abstract

Pneumatic tire for a rolling assembly, said pneumatic tire comprising at least one carcass reinforcement (2) that is provided with cords (11), a tread (4) that is connected to two beads (5) by means of two sidewalls (6), the beads (5) being able to come into contact with a wheel rim (7) that has rim gutter tips (7b); each bead (5) includes at least one circumferential reinforcing element; on their outer surface, the sidewalls (6) have a succession of alternating protrusions (8) and recesses (9), each protrusion (8) being located on the surface of the sidewall (6); the protrusions (8) are arranged at regular or irregular intervals in a continuous manner between a point A and a point E; the diameter of the cords of the carcass reinforcement is greater than 1 mm, or the cords of the carcass reinforcement are hybrid cords.

Description

technical field [0001] The present invention relates to bias ply tires or radial carcass tires. Background technique [0002] Radial carcass tires have gradually been used in various markets, especially in the passenger vehicle tire market. This success is particularly attributable to the properties of durability, comfort and low rolling resistance offered by radial tires. [0003] The main parts of a tire are the tread, sidewalls and beads. The bead is designed to make contact with the rim. In a radial tire, each of the main parts constituting the tire (ie, the tread, sidewalls, and beads) has functions significantly different from each other and thus has a known specific composition. [0004] A radial tire is substantially reinforced by a carcass reinforcement comprising at least one carcass ply arranged at an angle substantially equal to 90° with respect to the circumferential direction of the tyre. This carcass reinforcement is covered radially outside and under the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C13/02
CPCB60C9/005B60C13/02B60C2009/0425B60C2009/0475B60C2011/013B60C2011/0341
Inventor H·费里戈O·穆尔霍夫
Owner MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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