Abstract:
A steel cord (10) adapted for the reinforcement of rubber products, comprises a core strand (12) and six peripheral strands (14) concentrically surrounding the core strand (12). Each of the core and peripheral strands (12, 14) comprises a center of two or more center filaments (16) and two layers of filaments surrounding the center. The core strand (12) has a diameter D1 which is greater than the diameter D2 of the peripheral strands (14). All the filaments (18, 20) of each layer have substantially the same diameter and a radially outer layer has a twist angle which is greater than a twist angle of a radially inner layer of the same strand. Each of the strands (12, 14) in the cord is composed of no more than twenty-six filaments (16, 18, 20) being twisted together.
Abstract:
A rope and a method of constructing the rope. The rope may be of 12×12 braided construction and include a core for its length. The rope includes a plurality of primary strands, and each of the primary strands includes a plurality of fibers which may be made of a high-friction material. The rope also includes a secondary strand surrounded by the plurality of primary strands. The secondary strand includes a plurality of fibers which may be made of a low-friction material.
Abstract:
A steel cord (10) adapted for the reinforcement of rubber products, comprises a core strand (12) and six peripheral strands (14) concentrically surrounding the core strand (12). Each of the core and peripheral strands (12, 14) comprises a centre of two or more centre filaments (16) and two layers of filaments surrounding the centre. The core strand (12) has a diameter D1 which is greater than the diameter D2 of the peripheral strands (14). All the filaments (18, of each layer have substantially the same diameter and a radially outer layer has a twist angle which is greater than a twist angle of a radially inner layer of the same strand. Each of the strands (12, 14) in the cord is composed of no more than twenty-six filaments (16, 18, 20) being twisted together.
Abstract:
There are provided a pneumatic radial tire of heavy load vehicles, in which durability of a belt is improved.A pneumatic radial tire for heavy load vehicles comprises a pair of bead portions in each of which a bead core is embedded, a radial carcass ply 1 extending from one bead portion to the other bead portion and turned around the bead core from an inner side to an outer side of the bead core in a width direction of the tire and at least six belt layers 2 disposed on an outer side of this radial carcass ply 1 in a radial direction of the tire, wherein the following relations are satisfied: W56>W34>W12, where W12 is a maximum width of first and second belts 2a f the belt layers 2, W34 is a maximum width of third and forth belts 2b of the belt layers 2 and W56 is a maximum width of fifth and sixth belts 2c of the belt layers 2; and 1>D12/D34>0.6, where D12 is a cord diameter of the first and second belts and D34 is a cord diameter of the third and forth belts. In addition, a steel cord of each belt layer has a double twist structure in which a plurality of steel filaments are twisted to form a cable and two to ten cables are further twisted.
Abstract:
The invention relates to a high strength fibers comprising a coating of cross-linked silicone polymer, and ropes made thereof. The fibers are preferably high performance polyethylene (HPPE) fibers. The coating comprising a cross-linked silicone polymer is made from a coating composition comprising a cross-linkable silicone polymer. The rope shows markedly improved service life performance in bending applications such as cyclic bend-over-sheave applications. The invention also relates to the use of a cross-linked silicone polymer in a rope for an improvement of bend fatigue resistance.
Abstract:
Multistrand metal cord (C-1) having two layers (Ci, Ce) of J+K construction, which can especially be used for reinforcing tires for industrial vehicles, consisting of a core comprising J strands forming an inner layer (Ci), J varying from 1 to 4, around which core are wound, in a helix, with a helix pitch PK of between 20 and 70 mm, K outer strands forming an outer layer (Ce) around said inner layer (Ci), each outer strand: comprising a cord (10) having two layers (C1, C2) of L+M construction, rubberized in situ, comprising an inner layer (C1) comprised of L wires (11) of diameter d1, L varying from 1 to 4, and an outer layer (C2) of M wires (12), M being equal to or greater than 5, of diameter d2, which are wound together in a helix with a pitch p2 around the inner layer (C1); and having the following characteristics (d1, d2 and p2 being expressed in mm): 0.10
Abstract:
A fiber cable for helicopter rescue winches includes a plurality of load-bearing synthetic-fiber strands braided with one another, at least one electrically conductive insert, and a wear indicator providing a visual check of a state of the fiber cable, where the load-bearing synthetic-fiber strands are encased in a radial direction by a friction-reducing stable fiber layer, an inner cable jacket, and outer cable jacket.
Abstract:
A flexible abrasion resistant water shedding omnidirectionally reflective rope has a central low-density polymeric closed cell foam core comprising EPDM, Neoprene, SBR, NBR, EVA, PVC, PVC/NBR foam surrounded by cylindrically braided sleeve of reflective strips composed of narrow width reflective strips that comprise a woven or knitted narrow width strip and a flexible nylon retroreflective sheet sewn thereon and covered with abrasion resistant water shedding coating. The flexible retroreflective sheet is formed by thermally bonding corner cube, microsphere retroreflectors, or wide angle exposed retroreflective lenses to a flexible polymeric sheet. Due to its low-density foam core construction, the reflective rope floats on water and sheds water from the surface preserving omnidirectional reflectivity. The rope reflects light omnidirectionally over a large angle of acceptance and provides accurate illumination of the rope floating in water, location of a rope wound buoy and the like when used during dusk, fog or nighttime hours.
Abstract:
A steel cord comprises more than one steel filament (10). At least some of the steel filaments have a zinc iron alloy layer (14) partially covered with a zinc cover (16). The zinc cover is only present in valleys formed in the zinc-iron alloy layer. The processability and adhesion level in rubber products of the steel cord are increased.
Abstract:
An annular metal cord includes an annular core portion and an outer layer portion. The annular core portion is formed by connecting together both ends of a first strand material which is made up of six twisted first metal filaments. The outer layer portion is formed by winding spirally a second strand material which is made up of six twisted second metal filaments around the annular core portion. The second strand material is wound at a predetermined winding angle relative to a center axis of the annular core portion, and a winding initiating end portion and a winding terminating end portion are connected together. As a result, the breaking strength of the annular metal cord can be made large, and the production thereof can be facilitated.