Compact steel cord structure

Details Compact steel cord structure Compact steel cord structure

1988-04-22

1989-05-16

Petrakes, John

Textiles: spinning, twisting, and twining

Strand structure

Covered or wrapped

57213, 57218, 57902, 152451, 152527, 152556, B60C 900, D07B 106, D02G 312, D02G 348

Patent

active

048297607

ABSTRACT:
A steel cord comprises a central bundle of three twisted steel filaments (1) with a diameter d.sub.1 and nine steel filaments twisted around said central bundle with the same twist pitch and twist direction as the central bundle. Three filaments (2) of said nine steel filaments have a diameter d.sub.2 and contact two adjacent steel filaments of the central bundle. Six steel filaments (3) of said nine steel filaments have a diameter d.sub.3 and contact both one steel filament of the central bundle and one steel filament of the three filaments with diameter d.sub.2. The ratio d.sub.2 /d.sub.1 is greater than 1.05 and smaller than 1.16. The raio d.sub.3 /d.sub.1 is greater than-0.205=0.814.times.d.sub.2 /d.sub.1 and smaller than-0.105+0.814=d.sub.2 /d.sub.1.

REFERENCES:
patent: 2435772 (1948-02-01), Clarke
patent: 3358435 (1967-12-01), Peene
patent: 3538702 (1970-11-01), Wolf et al.
patent: 4332131 (1982-06-01), Palsky et al.
patent: 4488587 (1984-12-01), Umezawa et al.
patent: 4572264 (1986-02-01), Umezawa et al.
patent: 4707975 (1987-11-01), Umezawa

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