Double-layer multi-strand cable having improved bending endurance

US12163279B2 · kind B2 · utility

Assignee

• COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN · FR

Inventors

• Marianna Chevalley · Clermont-Ferrand, FR
• Romain Barbat · Clermont-Ferrand, FR
• Alexandre Gianetti · Clermont-Ferrand, FR
• Stephane Laurent · Clermont-Ferrand, FR

Key dates

• Filing date: Jun 18, 2021
• Grant date: Dec 10, 2024
• Expiry date: Jul 24, 2041

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D07B2801/12
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A multi-strand cord (50) comprises an internal layer (CI) of the cord made up of K=1 two-layer (C1, C3) internal strand (TI), with the internal layer (C1) being made up of Q internal metallic threads (F1), and the external layer (C3) being made up of N external metallic threads (F3), and an external layer (CE) of the cord made up of L>1 two-layer (C1′, C3′) external strands (TE) wound around the internal layer (CI) of the cord, with the internal layer (C1′) being made up of Q′ internal metallic threads (F1′), and the external layer (C3′) being made up of N′ external metallic threads (F3′). The cord (50) has an endurance criterion SL≤40 000 MPa·mm with and a size criterion Ec≥0.46 with Ec=Sc/Se.