Patent · US Expired

Steel cord twisting structure

US4724663A · kind A · utility

3Cited by

11References

22Claims

0Family size

Assignee

N V BEKAERT SA · BE

Inventors

Luc Bourgois · Waregem, BE
Freddy Baillievier · Zwevegem, BE

Key dates

Filing date	Sep 5, 1986
Grant date	Feb 16, 1988
Priority date	—
Expiry date	Sep 5, 2006

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S57/902
WIPO fieldOther consumer goods
WIPO sectorOther fields

Abstract

A steel cord, for use in the reinforcement of resilient articles such as rubber tires, comprises a central bundle of wires surrounded by a circumferential layer of helicoidally twisted wires. In the central bundle, one can distinguish a core and a surrounding layer, the latter having the same twist pitch as the circumferential layer. In order to reduce wire migration, the wires of the central bundle show a limited number of relative position changes, between 2 and 300 per 30 cm cord length.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.