Abstract:
A pneumatic tire comprises a tread reinforcing belt made of metallic cords, each of the metallic cords is made up of six to twelve metallic filaments whose diameter is not less than 0.15 mm but less than 0.25 mm, the six to twelve metallic filaments are grouped into a plurality of bunches each including two to four filaments, the filaments of each bunch are twisted together at a first twisting pitch, the bunches are twisted together into the cord at a final twist pitch Pc of from 10 to 40 mm, the first twisting pitch is more than the final twist pitch, and the bunches each include at least one waved filament which is two-dimensionally waved at wave pitches Pw in a range of from 5 to 30 times the diameter (d) of the filament and a wave height (h) in a range of from 0.2 to 3.0 times the diameter (d).
Abstract:
A metal cord usable for the reinforcement of rubber articles is comprised of a helically formed single wire filament having a twisting angle of 75-84.5.degree. or a bundle of two twisted metal filaments each having a twisting angle of 75-84.5.degree.. Such metal cords are preferably used as a rubber reinforcement in each part of a pneumatic tire.
Abstract:
A metal cord is formed by twisting two spirally preshaped metal filaments together with a twisting pitch P. The metal filament has not only the spiral shape formed by twisting, but retains so much of its spiral preshape as to have a pitch p equal to 0.20-0.50 times the twisting pitch and a diametric height h of 0.05-0.25 mm. The retained spiral shape is in the same rotary direction as the direction in which the filaments are twisted together.
Abstract:
A pneumatic radial tire for automotive vehicles comprising a least one rubber coated steel cord consisting of a pair of intertwisted filaments and having a flatness ratio f in the range of 0.6.ltoreq.f .ltoreq.0.9, where f is defined by 2d/h, where d is a diameter of a filament and h is the maximum diameter of the flattened 1.times.2 cord. This cord is obtained by deforming the cord with a force applied transversely and unidirectionally over its length.
Abstract translation:一种用于机动车辆的充气子午线轮胎,其包括由一对缠结长丝组成的至少一个橡胶涂层钢帘线,并且具有在0.6≤f≤0.9的范围内的平坦度比f,其中f由2d / h ,其中d是细丝的直径,h是扁平的1x2线的最大直径。 该绳索是通过使其横向和单向地施加在其长度上的力使绳索变形而获得的。
Abstract:
A metallic cable (10) suitable for reinforcing elastomeric articles comprises two or more substantially identical, helically disposed filaments (11, 12, 13) nested together and twisted together, such that the cable has a lay length (L) that is at least two times greater than the pitch length (P) of the filaments. The cable is manufactured by drawing metallic filaments from a bobbin means (31, 32, 33) and then guiding them through a means for deforming (34) that shapes the filaments into helixes. The filaments are positioned beside and against each other such that each filament is in contact with at least one other filament. After a sunken rotating pulley (37) guides the filaments through the hollow bearing (23) of a first flyer (21), first and second rotating flyers (21, 22) twist the helically disposed filaments together to form a cable.
Abstract:
The invention provides a steel cord with a construction of n×1, n is the number of the steel filaments of the steel cord, the steel cord has an elongation at 2.5N-50N of less than 1.2% and a twist pitch of greater than 16 mm, each of the steel filaments has a form of helical wave with a wave length L expressed in mm and a wave height H expressed in mm when being unravelled from said steel cord, L is greater than 16 mm, each of the steel filaments has a space volume Vs satisfying that, Vs=L×H2×π/4, and Vs>20 mm3. The invention steel cord is beneficial for the stress distribution.
Abstract:
A cord (50) comprises a single layer (52) of helically wound metal filamentary elements (54). The metal filamentary elements define an internal enclosure (58) of the cord of diameter Dv. Each metal filamentary element (54) has a diameter Df and a helix radius of curvature Rf. With Dv, Df and Rf being expressed in millimetres, the cord satisfies the following relationships: 9≤Rf/Df≤30 and 1.30≤Dv/Df≤2.10.
Abstract:
A coil body has high flexibility, satisfactorily tracks a complicated shape, and remarkably transmits fine vibrations occurring on a part of the coil body. A guide wire uses the coil body. The coil body is formed by helically winding a stranded wire including a plurality of stranded element wires. The stranded wire has a first gap as a hollow at the center of the stranded wire.
Abstract:
The invention relates to cord (20) comprising a number of filaments twisted together. The peripheral surface of the cord (20) is at least partially coated with an adhesion promoting coating (24). The adhesion promoting coating (24) comprises at least a first layer comprising a silicon based coating, a titanium based coating, a zirconium based coating or a combination thereof. The invention further relates to a composite material comprising such a cord (20) embedded in a polymer material. Furthermore the invention relates to a method to manufacture such a cord (20).