Steel cord twisting structure

Details Steel cord twisting structure Steel cord twisting structure

1986-09-05

1988-02-16

Watkins, Donald

Textiles: spinning, twisting, and twining

Apparatus and processes

Covering or wrapping

57 6, 57 9, 57 13, D02G 348, D07B 106

Patent

active

047246634

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.

REFERENCES:
patent: 2492352 (1949-12-01), Bourbon
patent: 3336744 (1967-08-01), Perne
patent: 3352098 (1967-11-01), Gilmore
patent: 3872659 (1975-03-01), Campbell et al.
patent: 4158946 (1979-06-01), Bourgois
patent: 4332131 (1982-06-01), Palsky
patent: 4349063 (1982-09-01), Kikuchi et al.
patent: 4473995 (1984-10-01), Gentry
patent: 4488587 (1984-12-01), Umezawa et al.
patent: 4601165 (1986-07-01), Weidenhaupt et al.
patent: 4608817 (1986-09-01), Brandyberry

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