tyre
A tire design with defined angle configurations for working and carcass reinforcements addresses variable puncture test sensitivity, ensuring consistent performance across dimensions by meeting puncture test standards.
WO2026125317A1PCT designated stage Publication Date: 2026-06-18MICHELIN & CO (CIE GEN DES ESTAB MICHELIN)
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- MICHELIN & CO (CIE GEN DES ESTAB MICHELIN)
- Filing Date
- 2025-12-09
- Publication Date
- 2026-06-18
AI Technical Summary
Technical Problem
Tires with triangulation between the wire reinforcements of a single carcass layer and a single working layer exhibit variable sensitivity to puncture tests, failing to meet performance standards across different dimensions.
Method used
A tire design with specific angle configurations for working and carcass reinforcements, ensuring a minimum breaking strength based on the Tx ratio, guarantees consistent performance in puncture tests across varying dimensions.
Benefits of technology
The design ensures that tires satisfy puncture tests like the 'breaking energy' test for all dimensions, enhancing reliability and consistency in tire performance.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure EP2025086006_18062026_PF_FP_ABST
Abstract
The invention relates to a tyre (100) comprising a crown (110), two sidewalls (120) and two beads (130). The crown comprises a working reinforcement (113), one or each working layer (114) of which comprises filamentary reinforcers forming an angle of 10° to 60° with a circumferential direction (Z). The tyre comprises a carcass reinforcement (140), one or each carcass layer (141) of which comprises filamentary reinforcers which, with the circumferential direction, form, in each of two lateral portions (141F), an angle of 80° to 90° and, in a top portion, an angle of 30° to 80°. The working reinforcement and the carcass reinforcement have forces at break, expressed in daN / mm, which are at least equal to 11.5*Tx+18.7 and 1.8*Tx+16.0, respectively, where Tx is an adimensional ratio equal to RT / RI, where RT and RI are radii measured between an axis of rotation (X100) and, respectively, a radially outermost end of the working reinforcement and a radially innermost end of the tyre.
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