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Bead structure for a pneumatic tire

A technology of pneumatic tires and beads, which can be used in tire parts, tire rims, vehicle parts, etc., and can solve problems such as rupture

Inactive Publication Date: 2013-06-19
THE GOODYEAR TIRE & RUBBER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this design, the core may have a tendency to crack at the weld

Method used

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  • Bead structure for a pneumatic tire
  • Bead structure for a pneumatic tire
  • Bead structure for a pneumatic tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0100] see figure 1 and figure 2 , which shows a schematic diagram of a pneumatic tire 100 including an example bead structure 20 according to the present invention. The bead structure 20 may be surrounded by a carcass ply 150 and an apex 152 . The bead structure 20 may have a coreless (e.g. no defined or uniform central core, uniform arrangement) equilateral triangular configuration ( figure 2 ), the configuration is formed by 21 cords 22 having a unique configuration in the bead portion of the pneumatic tire 100 .

[0101] The cords 22 may be metal wires, aramid cords, carbon fiber cords, or other suitable materials. In this context, "coreless" may mean that the inner cords 22 are adjacent to each other, but not interconnected (e.g., The bead structure 20 has no central core / sheath arrangement, the cross-section has a uniform or consistent arrangement). For example, each cord 22 may be a wire and have one or more of the following constructions: 0.295 mm diameter high ...

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PUM

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Abstract

A pneumatic tire comprising a bead structure (20) comprising of from 3 to 300 cords is disclosed. Each cord comprises at least one strand or filament wrapped by at least two strands or filaments.

Description

technical field [0001] This invention relates to tires, and more particularly to bead structures for pneumatic tires. Background technique [0002] The tire bead is the part of the tire that positions and secures the textile or steel cords of the carcass ply, defines the inner perimeter of the tire, and anchors the tire to the rim. A tire bead may be an annular tensile member or an inextensible loop. The tire may have at least two tire beads within a rubber or elastomeric matrix constituting a radially innermost perimeter on each side of the tire. There have been three conventional types of tire beads, strap beads, single wire beads, and single cable beads. [0003] Strip beads may have a bead core constructed by wrapping a wire-rubber matrix strip made of an array of multiple wires embedded in rubber. The rubber holds the bead in place and prevents the wire from causing fretting to adjacent components in the tire. Strip beads are easy and economical to produce. However...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60C15/04
CPCB60C15/04B60C2015/042
Inventor J-L.M.F.托马斯Y.B.杜瓦尔F.P.德普洪A.西伯M.基里
Owner THE GOODYEAR TIRE & RUBBER CO