Abstract: A method and system for manufacturing high-quality cable beads with efficiency. The method includes the steps of arranging a plurality of carriages carrying a core and a reel wound with a wire around a reel revolving means having at least two arms, attaching the core to a core rotating means for rotating the core in a circumferential direction by holding it with one of the arms and positioning the reel on one side of the core by holding it with the other of the arms, manufacturing a cable bead by revolving the reel by holding it alternately with each of the two arms, and returning the cable bead and the reel to the carriage using the two arms. Thus, the setting of the reel and the core, the manufacturing of a cable bead, and the returning of the cable bead and the reel back to the carriage are performed automatically.
Abstract: A method of manufacturing an annular concentric stranded bead cord, wherein, while rotating an annular core at a fixed position in a peripheral direction, a reel, upon which a lateral wire is wound, repeatedly performs a pendulum swinging movement and a perpendicular movement with respect to the annular core, thereby spirally winding the lateral wire upon the annular core to form a sheath layer. When forming the sheath layer, a fulcrum of the pendulum swinging movement of the reel is determined so that, with reference to a tangential line of a circle of the annular core passing through a winding point where the lateral wire is wound upon the annular core, the lateral wire is wound upon the winding point of the annular core within 15 degrees at a position above the tangential line and within a range of 55 degrees at a position below the tangential line.
Abstract: An apparatus for manufacturing industrial slings which is especially adapted for making roundslings. The apparatus can make slings having one load-lifting core or multiple load-lifting cores. The apparatus has three primary sections, namely, a yarn feeder assembly, a control assembly and a tail section assembly. The sling-making apparatus may be left-handed or right-handed.
Abstract: The invention is related to a roundsling in the form of an endless loop consisting of a core containing at least two turns of a load-bearing strand material comprising fibres with a tenacity of at least 10 cN/dTex and a protective covering around said core, wherein the strand material is in the form of a braided or laid rope, the terminal ends of which are connected with a splice. The invention further relates to a method for constructing a roundsling comprising a step of winding a braided or laid rope on two reels such that part of the turns is on the reels and another part is between the reels wherein the part between the reels is supported, and a step of making a splice in the two terminal ends of the rope.
January 28, 2004
Date of Patent:
July 10, 2007
DSM IP Assets B.V.
Paulus Johannes Hyacinthus Marie Smeets, Christiaan Henri Peter Dirks
Abstract: Disclosed is a flexible roundsling construction which comprises a fiber optic signal strand component in a bundle of strands of endless parallel loop lifting core yarn contained inside a tubular protective cover material from which two free ends of the fiber optic strand emerge as means for providing a signal of defective continuity in the sling lifting core.
Abstract: A utility loop includes a loop of fiber which forms the loop core. The loop of fiber is made from a thread wrapped into a plurality of loops. The two loose ends of the thread can then optionally be tied together to form the loop of fiber. The outer loop cover of the utility loop is a tube of braided material, which surrounds loop of fiber. The tube of braided material has a tube axis running along a length of the tube of braided material. The tube of braided material includes a relatively small number of relatively large-diameter monofilament fibers, which are braided together in a tubular form. All of the relatively large-diameter mono-filament fibers are oriented to form acute angles with the tube axis. The two loose ends of the tube of braided material are connected together to form the utility loop. Specifically, a first opposing end of the tube of braided material is slipped over a second opposing end of the tube of braided material to thereby form an overlap.
June 21, 1996
Date of Patent:
July 22, 1997
McDonnell Douglas Corp.
Blaine K. Rawdon, James S. Wells, Myles A. Rohrlick
Abstract: A skein of yarn is drawn through a protective tube prefabricated of a woven, tubular textile fabric and is connected in order to form an endless sling. The protective tube is formed of two length sections. These length sections, which are of approximately the same length, are pushed together only slightly during the manufacturing process. In this pushed-together form, they surround the upper reach and the lower reach of the drive formed during drawing in of the skein of yarn by the strands of yarn which are placed around the wheel discs of the manufacturing apparatus.
Abstract: A twisted cable assembly and a method of making the same. The cable assembly comprises first and second spaced apart end spools and a continuous length of wire. The wire is looped around and extends between the end spools, and sections of the wire between the end spools are twisted into a composite strand. With one embodiment, an elongated malleable wire also is connected to and extends between the end spools to hold the cable assembly selectively in a range of curved positions. With an alternate embodiment, a stiffening wire is connected to and extends between the end spools to inhibit bending of the cable assembly.
Abstract: A method is disclosed for preparing polypropylene endless loop by blow-moulding polypropylene raw materials into tubular sheet, drawing the same transversely to an extent to provide a draw ratio of at least 4, and before or after the drawing step, cutting the tubular sheet to form individual endless loops, then twisting the cut and drawer loops to provide a twisted endless loop. The preferred polypropylene endless loop product is also disclosed.
Abstract: Continuous filament rope and method of making same whereby high strength continuous synthetic filaments may be used to provide a rope which in use will have a strength approaching the theoretical strength of the fibers therein. The rope is made by combining a plurality of filaments and twisting the filament group into a light twine in comparison to the rope ultimately desired. The twine is then impregnated with a suitable flexible resin system and wound in a loop having at least a substantial number of turns of the twine. Thereafter the loop is allowed to twist back on itself in response to the twist initially set in the twine so as to form a rope-like center section with loops at each end thereof. Curing of the flexible resin system results in a suitable flexibility of the rope while providing for abrasion and fraying resistance. The loops at the end of the rope may be looped over hooks or pins when in use, with the resulting strength of the rope approaching that of the combined fiber strength.