Textiles: spinning – twisting – and twining – Strand structure – Covered or wrapped
Patent
1991-11-08
1994-06-28
Hail, III, Joseph J.
Textiles: spinning, twisting, and twining
Strand structure
Covered or wrapped
57311, 57902, D07B 106
Patent
active
053235959
ABSTRACT:
A steel tire cord is composed of three to five strands twisted closely with minimum gaps between the strands. The steel tire cord is easy to handle in embedding the same in rubber to form a tire, free from corrosion and highly durable. A tire incorporates the steel tire cords which are bonded firmly to rubber in a belt layer. Tires thus fabricated are uniform in quality and highly durable. The steel tire cord is composed of three to five twisted strands arranged in a construction reducing the sectional area of spaces in the steel tire cord to a minimum. The core strands twist in helices around imaginary cylinders having axes aligned with the axis of the steel tire cord. The outside strands twist in helices around imaginary cylinders having axes aligned with the axis of the steel tire cord and having diameters greater than those of the imaginary cylinders around which the core strands twist. At least one of the strands among the component strands of the steel tire cord is crimped to form bends therein. The core strands and the outside strands are arranged closely in a triangular sectional construction with gaps between the crimped strand and the adjacent strands. In the tire incorporating the steel tire cords, the outer enveloping surface of the steel tire cord, and inner enveloping surfaces defining the spaces having a triangular cross section are covered closely with rubber, so that the steel tire cords and the rubber are bonded firmly.
REFERENCES:
patent: 4022009 (1977-05-01), van Assendelft
patent: 4509318 (1985-04-01), Yoneda
patent: 4586324 (1986-05-01), Mizuma
patent: 4738096 (1988-04-01), Hatakeyama et al.
patent: 4749016 (1988-06-01), Kojima et al.
patent: 4836262 (1989-06-01), Nishizawa et al.
Ito Toshiaki
Mizuta Takehiko
Ozaki Noriyuki
Shinmyo Masao
Hail III Joseph J.
Kokoku Steel Wire Ltd.
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