Abstract:
A spliceless longitudinally extending strand structure and method of fabricating the same which method embodies the steps of stranding at least one generally elongated strand wire about a first individual core wire segment to form a first outer layer segment, bonding a second core wire segment to the first core wire segment, bonding a second generally elongated strand wire to each of the first strand wires and stranding the second strand wires about second core wire segment as a second outer layer segment to form a continuous length of a strand structure. This process is continued until a strand structure of desired length is obtained. A stranded cable is formed by helically twisting a plurality of strand structures together. In the strand structure, the bonded joints connecting the strand wires between adjacent outer layer segments are spaced from the joint between the associated core wire segments and from each other longitudinally of the strand structure. Also, the core wires and strand wires of each of the successive segments are of decreasing diameter to form a stepped tapered structure.
Abstract:
Variable-diameter lanyards and systems and methods for manufacturing the same are disclosed. Variable-diameter lanyards can include a variable diameter core with a woven exterior. Tensile members may be included in the variable-diameter core for structural support and added strength.
Abstract:
The safety mountaineering rope (1) has a core comprising a plurality of core ropes (2).In order to improve the tearing resistance of the rope (1), the rope core surrounds in the manner of a tube at least one cavity (3) extending over the entire length of the rope (1). In this case the cavity (3 )is filled by means of at least one resilient filling material or body, resilient at least as viewed in the radial direction of the rope (1), and which, when the rope (1) is pulled over an edge and with a high tensile force for example, results in a considerable momentary flattening of the cross-section of the rope when pulled over the edge and thus a considerably wider support of the rope (1) on such an edge. In addition, the rope core (2) is surrounded by a rope sheathing (4) provided with a protective layer (5) impervious to particles of dirt.
Abstract:
A rope substitution belt which has a higher strength than a rope having the same mass, has a substantially circular section, and is equipped with belt portions for sewing on both sides. The belt is a narrow width woven fabric (10) including warps (6) and wefts (7) of synthetic fiber filaments. The belt includes a main body portion (2), a belt portion (4) and a connecting portion (3) for connecting the main body portion (2) to the belt portion (4), that are disposed in a longitudinal direction. The main body portion (2) has a structure with wadding yarns (5) which are woven into a hollow woven structure. The warp density coefficient in the hollow woven structure portion (22) is set to be not greater than 0.700. The belt portion (4) has a structure with a part, or the whole, of the wadding yarns (5) which are so arranged as to cross the wefts with the warps (6) of the hollow woven structure of the main body portion (2). The belt portion (4) has a width W which is at least 2.0 times the width W of the main body portion (2). The connecting portion (3) is constituted such that while the width is gradually changed, it step-wise shifts over a plurality of stages to the woven structure of the main body portion (2) or the belt portion (4).
Abstract:
A braided fishing line leader comprises a plurality of filaments each having a diameter in the order of micrometer and being interwoven into a hollow braided tube progressively reducing in diameter from a trailing end to a leading end thereof. The filaments include nylon threads interwoven with copper threads to increase density of the leader.
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.