Having a core and at least one coaxial layer of filaments twiste

Details Having a core and at least one coaxial layer of filaments twiste Having a core and at least one coaxial layer of filaments twiste

1993-03-25

1995-12-12

Stryjewski, William

Textiles: spinning, twisting, and twining

Strand structure

Covered or wrapped

57902, D07B 106

Patent

active

054738784

ABSTRACT:
The invention is directed to several embodiments of metallic cord for the reinforcement of tires wherein one or more coaxial layers of metallic filaments are arranged around the metallic core filaments and twisted in the same direction at the same pitch. In one embodiment, the ratio of the diameter of the core filaments to the layer filaments is at least 1.28. In another embodiment, two of the core filaments have a first diameter and the third core filament has a second diameter smaller than the first diameter daimeter. In still another embodiment, two of the core filaments have a first diameter and a third of the core filaments has a second diameter smaller than the first diameter while the coaxial layer filaments have a third diameter equal to the second diameter. In another embodiment, the core has three core filaments twisted about each other and a coaxial layer of eight layer filaments arranged around the core filaments. In yet another embodiment, the core filaments have a first diameter and the layer filaments have a second diameter which is larger than the first diameter.

REFERENCES:
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patent: 4707975 (1987-11-01), Umezawa
patent: 4783955 (1988-11-01), Uchio
patent: 4788815 (1988-12-01), Umezawa
patent: 5050657 (1991-09-01), Umezawa
patent: 5327713 (1994-07-01), Sakon

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