Tyre bead with extended mobility

一种轮胎、胎圈的技术，应用在轮胎零部件、胎沿、车轮等方向，能够解决轮胎安装/拆卸困难等问题，达到良好轴向保持、优化设计和制造的效果

Inactive Publication Date: 2005-01-26
MICHELIN & CO (CIE GEN DES ESTAB MICHELIN) +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] Tire installation / removal is difficult due to unfavorable radial position of the cord unless high elongation cords are used

Method used

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  • Tyre bead with extended mobility
  • Tyre bead with extended mobility
  • Tyre bead with extended mobility

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0096] In this specification, the term "cord" generally refers to monofilaments and multifilaments or assemblies, such as steel cords, plied wires or any equivalent type of assembly, regardless of the material and treatment of these cords. They may be surface-treated, coated or pre-finished, for example to aid in bonding with rubber.

[0097] On the other hand, "radial structure" is understood as an arrangement at 90°, but according to custom, it can also be an angle close to 90°.

[0098] As is known, generally the carcass ply is inverted about a bead wire. The bead wire then acts to fix the carcass. In this way, in particular, it withstands the tensile forces that occur on the carcass cords, for example under the action of inflation pressure. The structures described in the literature are able to guarantee a similar fixing effect. It is also known to ensure the clamping of the bead on the rim with bead wires of conventional form. The constructions described in the litera...

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PUM

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Abstract

A tire for a vehicle wheel, comprising two sidewalls, a crown zone provided on its radially outer portion with a circumferential tread, and a bead arranged in the radially inner portion of each of the sidewalls. Each bead comprises a seat and an outer flange which are intended to come into contact with the rim, the seat having a generatrix, the axially inner end of which lies on a circle of diameter greater than the diameter of the circle on which the axially outer end is located. A carcass-type reinforcement structure extends substantially radially from each of the beads, along the sidewalls, towards the crown zone. Each bead includes a zone for anchoring the carcass-type reinforcement structure in the bead, a bearing zone for the bead against a suitable rim seat, and an intermediate zone, which is provided substantially between said anchoring zone and the bearing zone.

Description

technical field [0001] The invention relates to a tire for a vehicle wheel, in which at least one bead has a generatrix whose axially inner end lies on a circle with a diameter greater than that of its axially outer end, this type of construction is particularly suitable for A new type of tire which, within certain limits, can be used under low pressure, or even zero pressure and virtually zero pressure, eliminating the risk of separation of the tire from the rim on which it is mounted. This concept is often referred to by the term "extended mobility". Background technique [0002] Tire manufacturers have long attempted to develop a tire that would not present any source of potential risk or danger in the event of an abnormal drop in pressure, or even a complete loss. One of the difficulties encountered is the running problem of flat tires or tires with very low pressure. In fact, when conventional tires are driven at very low or completely lost pressure, there is a great ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60C15/05B60C15/00B60C15/024B60C15/06B60C17/00
CPCB60C15/0018B60C15/024B60C15/0247B60C17/00B60C15/06B60C15/04Y10T152/10837Y10T152/10846Y10T152/10819
Inventor P·科斯塔佩拉里亚B·盖里农
Owner MICHELIN & CO (CIE GEN DES ESTAB MICHELIN)
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