Abstract:
A cable 1 comprises a first thimble 2 and a second thimble 4, at least one yarn 6, and at least a first conductive fibre 8 for monitoring the cable 1. The yarn 6 extends from the first thimble 2 to the second thimble 4, turns around the second thimble 4, extends from the second thimble 4 to the first thimble 2, and turns around the first thimble 2. Each thimble holds a stack 9 of layers 10 of turns of the yarn 6. The first conductive fibre 8 is designed to signal the wear of the yarn 6 by breaking after a predetermined portion of the turns of the yarn 6 breaks. The first conductive fibre 8 is positioned at the first thimble 2 between the turns of the yarn 6 at less than 50% of the stack height h.
Abstract:
An exemplary method of making a load bearing elevator traction belt includes applying individual coatings of a jacket material to each of a plurality of tension members such that each tension member is individually coated separately from the other tension members. A portion of the individual coatings are joined together to secure the tension members into a desired alignment and to form a single jacket that establishes a geometry of the belt.
Abstract:
A rope of a lifting device, more particularly of a passenger transport elevator and/or freight transport elevator, an elevator, and a method for manufacturing the rope are disclosed. The rope includes an unbroken load-bearing part, the profile of which is essentially of rectangular shape, and the width of the cross-section is greater than the thickness and which load-bearing part comprises glass fiber reinforcements and/or aramid fiber reinforcements and/or carbon fiber reinforcements and/or polybenzoxazole fiber reinforcements and/or polyethylene fiber reinforcements and/or nylon fiber reinforcements in a polymer matrix material. The long sides of the cross-section of the load-bearing part include one or more grooves symmetrically or asymmetrically in the longitudinal direction of the rope, which grooves divide the load-bearing part into smaller parts.
Abstract:
An inflatable rope comprises three layers, a bladder, a sheath, and a perforated bag to keep the inflatable rope in a compressed form. The compressed form can be hurled through the air at great distance to a person overboard. The inflatable rope can be inflated to a size that eases the ability of the person, who has lost dexterity in frigid water, to hold on to it for rescuing.
Abstract:
A plurality of strands (7) of sectorial cross-section is stranded around a central core such as an optical fiber conductor. First, a rigid type stranding machine is used to impart a spiral twist to each strand (7). Then, the twisted strand (7) is heat-treated or otherwise treated to remove any stress caused by the twisting. These strands are then fed to a planetary type stranding machine which provides a planetary motion in which the strands perform an orbital rotation around the optical fiber core of an optical conductor or conductors without rotation about its own axis, whereby the strands are stranded together on the optical fiber core.
Abstract:
The present invention provides a lace fabric of a helical structure containing twisted optical fiber threads and a production method therefor. The lace fabric comprises light guiding threads, an external sleeve and braided ropes. The light guiding threads and the braided ropes are mutually twisted to form a whole body; the external sleeve is further sleeved outside the light guiding threads and the braided ropes; an LED light source module is arranged at the outer parts of the light guiding threads and the braided ropes; and a light-emitting end of the LED light source module and the light guiding threads are arranged opposite to each other. The present invention is safe, is low in cost, is conveniently applied to and combined into various daily supplies, is used in some spaces with little light, such as outdoors in the night and other places.
Abstract:
A steel cable includes steel wires and at least one light wave guide which is surrounded by the steel wires and provided for detecting load-dependent cable strains, and has a glass fiber surrounded by a plastic casing. At least the steel wires closest to the light wave guide are crimped with the light wave guide and permanently pressed against the casing surface thereof, whereby the cross-sectional shape of the casing surface of the light wave guide deviates from an unloaded shape, in particular a circular shape, and the light wave guide is clamped continuously along at least one part of the longitudinal extension thereof, in a slip-free manner between the steel wires closest to same. A method produces a steel cable of this type.
Abstract:
A polymer composite wireline cable comprising: a polymeric matrix material; at least one reinforced fiber embedded in the polymeric matrix material; and at least one optical fiber disposed in the polymeric matrix material, the at least one optical fiber having at least one pair of Bragg grating sensors, wherein one of the pair of Bragg grating sensors is configured to experience loading strain and the other of the pair of Bragg grating sensors is configured not to experience loading strain.
Abstract:
A method for stranding aramid yarn around an endless core includes a stranding step that involves a stranding apparatus having at least one yarn bobbin. The bobbin revolves around its own axis and the bobbin revolves around the core, wherein the yarn unwinds from the bobbin and winds around the core. The yarn is a continuous aramid yarn provided with 0.05 to 0.95 wt %, based on the weight of the aramid, of a finish including an organophosphorus compound. The organophosphorus compound is a compound of the formula X1X2X3P═O. X1, X2, and X3 are independently selected from Y1-, Y1-O—, and M-O. Y1 is a branched or straight-chain C1-C20 alkyl, aryl or alkenyl. M is selected from Li, Na, K, or ammonium. At least one of X1, X2, or X3 is selected from Y1- or Y1-O—.