Abstract:
In the pneumatic tire of this invention, at least the outermost one of a plurality of rubber layers between the carcass and tread has been reinforced with a plurality of steel cords. Each of these steel cords is a single-strand steel cord with an elongation at break of not less than 4% and at least one of its component wires does not form a common circumcircle with the remaining wires. This pneumatic tire features a high anti-cut property, high wire tenacity utilization rate, high rigidity and inhibited onset and growth of separation. The curve circumscribing the cross-sections of the constituent wires of each steel cord is not a true circle. Furthermore, a high resistance to nail penetration is assured by arranging the steel cords in such a manner that, for a large majority of steel cords, the direction of maximum offset span of the circumscribing curve is substantially coincidental with the width direction of the outermost layer of rubber.
Abstract:
A steel cord (10) for reinforcing elastomeric articles. The steel cord (10) having a plurality of strands (14). Each strand (14) having a core (20) and a sheath (22). The sheath (22) being a plurality of steel filaments that are helically wrapped about the core (20). A first strand (16) extending longitudinally through the center of the steel cord (10). The remaining strands (18) being helically wrapped about the first strand (16). The core (20) of the first strand (16) being a plurality of filaments twisted together. In a preferred embodiment, the core (20) of the first strand 16 being three filaments twisted together.
Abstract:
A two-layered twisted steel cord for reinforcing rubber articles, comprising a core including two filaments and a sheath including six or seven filaments wound around the core, in which an average twist pitch of the core is set to be at least 30 mm, and when six filaments are used for the sheath, a ratio of diameter ds of each filament of the sheath to diameter dc of each filament of the core, �(ds/dc).times.100!, is set in a range of 58.0 %
Abstract:
A hybrid rope (40) or a hybrid strand (50) comprising a core element (42, 52), a first (44, 54) and a second (46, 56) metallic closed layer surrounding said core element (42, 52). The core element (42, 52) includes a bundle of synthetic yarns. The first metallic closed layer (44, 54) includes a plurality of first strands of wires helically twisted together with the core element (42, 52) in a first direction. The second metallic closed layer (46, 56) includes a plurality of second wires or strands helically twisted together with said core element (42, 52) and said first metallic closed layer (44, 54) in a second direction. The cross-sectional area of the core element (42, 52) is larger than the total cross-sectional area of the first (44, 54) and second (46, 56) metallic closed layers. A corresponding method of producing such a hybrid rope or hybrid strand is also disclosed.
Abstract:
A method and apparatus (20) for intermittently cutting a moving target web (26) includes rotating a knife roll (32) having at least one knife member (44) to provide an operative knife-member speed, and rotating an anvil roll (34) having at least one anvil member (46) to provide an operative anvil-member speed. The knife roll and anvil roll have been positioned to provide an operative nip region (30) therebetween, and a substantially continuous target web (26) has been moved at a selected web speed through the nip region. A rotational positioning of the knife member has been coordinated with a rotational positioning of its cooperating anvil member to provide an operative, cutting engagement between the knife member and its cooperating anvil member, thereby cutting the moving web at cut locations which are intermittently spaced along a machine-direction (22) of the target web.
Abstract:
A steel cord (10) for reinforcing rubber product comprised core strands (12) and outer strands (14), the outer strands (14) are helically twisted around the core strands (12). Each of the stands including core strands (12) and outer strands (14) comprises core steel filaments (20) with the number of m and outer steel filaments (22) with the number of n. the diameter of the core steel filament (20) in the core strand (12) is Dec, the diameter of the outer steel filament (22) in the core strand (12) is Doc, the diameter of the core steel filament (20) in the outer strand (14) is Deo, the diameter of the outer steel filament (22) in the outer strand (14) is Doo, the ratio of Dec/Doc is not less than 1.04, the ratio of Dco/Doo is not less than 103, the ratio of Doc/Deo is not less than 1. The core steel filaments (20) and outer steel filaments (22) are polygonally preformed before being twisted into strands. The steel cord (10) is used for reinforcing off-the-road tire.
Abstract:
Tire for vehicle wheels, comprising metallic reinforcing cords made of a single strand of elementary filaments preformed by sinusoidal waving and wound together. Said metallic cords show a value of the integral of the breaking stress not lower than 5000 J/m .
Abstract translation:用于车轮的轮胎,包括由正弦波浪形并缠绕在一起的由单根基本细丝构成的金属加强帘线。 所述金属帘线显示不低于5000J / m 3的断裂应力的积分值。
Abstract:
본 발명은 코어 요소(42, 52), 및 상기 코어 요소(42, 52)를 둘러싸는 제1 금속 폐쇄 층(44, 54)및 제2 금속 폐쇄 층(46, 56)을 포함하는 하이브리드 로프(40) 또는 하이브리드 스트랜드(50)를 개시하고 있다. 코어 요소(42, 52)는 합성 가닥의 번들을 포함한다. 제1 금속 폐쇄 층(44, 54)은, 제1 방향으로 코어 요소(42, 52) 주위로 함께 나선형으로 트위스트된 와이어의 복수의 제1 스트랜드를 포함한다. 제2 금속 폐쇄 층(46, 56)은 제2 방향으로 상기 코어 요소(42, 52) 및 상기 제1 금속 폐쇄 층(44, 54) 주위로 함께 나선형으로 트위스트된 복수의 제2 와이어 또는 스트랜드를 포함한다. 코어 요소(42, 52)의 횡단면적은 제1 금속 폐쇄 층(44, 54) 및 제2 금속 폐쇄 층(46, 56)의 전체 횡단면적보다 크다. 이러한 하이브리드 로프 또는 하이브리드 스트랜드를 제조하는 대응 방법이 또한 개시되어 있다.