Textiles: spinning – twisting – and twining – Reinforcing or tire cords
Patent
1996-06-27
1997-09-02
Stryjewski, William
Textiles: spinning, twisting, and twining
Reinforcing or tire cords
57206, 57212, 57213, 57236, 57237, D02G 302
Patent
active
056619669
ABSTRACT:
A steel cord effective for reinforcing a super-large off-road tire wherein strands made by simultaneously twisting together 3 to 6 steel wires in the same twisting direction with the same pitch length are used and the steel cord is made by twisting together 3 to 6 such strands in the same direction as the twisting direction of the strands and with the same pitch length. Each of the steel wires constituting the strands continuously has a small wavy pattern of a pitch length smaller than the lay length of the strands and therefore each of the strands has a compound pattern comprising a wavy pattern formed by the twisting and said small wavy pattern and in a gap is formed between steel wires each of the strands by the small wavy pattern. The lay length P.sub.1 of the steel cord is 8 to 15 times the steel cord diameter D and the elongation on breakage by tension of the steel cord is over 5%.
REFERENCES:
patent: 5287691 (1994-02-01), Okamoto et al.
patent: 5319915 (1994-06-01), Kobayashi et al.
patent: 5321941 (1994-06-01), Bollen et al.
patent: 5337549 (1994-08-01), Kobayashi et al.
patent: 5502960 (1996-04-01), Kobayashi et al.
Striker Michael J.
Stryjewski William
Tokyo Rope Manufacturing Co. Ltd.
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