A synthetic rope (20) comprises a core (22) and at least a first layer surrounding the core (22). The first layer has first layer strands (26). The core has a fluted outer surface with spaced apart helical concave grooves. Each of these grooves contacts one of the first layer strands (26). The grooves have a radius of curvature (24) that is greater than the radius of curvature (14) of a circle having a same diameter as the contacting first layer strand before twisting.

An adjustable sports rope comprised of a hollow base rope sheath and an adjustment rope. The hollow base rope sheath is a hollow sheath with at least two openings. The adjustment rope enters into the hollow base rope sheath through one of the at least two openings and exits the base rope sheath through another of the at least two openings. The one end of the hollow base rope sheath terminates at a tie point. The end of the adjustment rope disposed furthest from the hollow base rope sheath tie point is also a tie point. By creating a tensile force between the tie point of the hollow base rope sheath and the tie point of the adjustment rope, the hollow base rope sheath will tighten on the adjustment rope, holding the adjustment rope in place.

A synthetic fiber rope comprising:a core, said core being a laid or braided synthetic fiber strand,a polymer layer, said polymer layer covering said core,a first layer, said first layer having at least six first synthetic fiber strands laid in a first direction surround said polymer layer, anda second layer, said second layer having at least twelve second synthetic fiber strands laid in a second direction surround said first layer.

The present invention relates to an apparatus for recognizing the replacement state of a high-strength fiber rope for lifting gear such as cranes as well as to a lifting gear such as a crane in which such a high-strength fiber rope is installed. It is the underlying object of the present invention to provide an improved apparatus for determining the replacement state of a high-strength fiber rope and to provide improved lifting gear having such a fiber rope that avoid the disadvantages of the prior art and further develop the latter in an advantageous manner. To be able to more easily determine the respective degree of damage of the jacket and thus the closeness to the imminent replacement state of the rope, the apparatus is provided with a reference damage memory in which reference representations of the rope with different degrees of damage to the jacket of the rope are contained to allow for an optical comparison of an actual image of the rope with the stored reference representations and thus, determination of the replacement state.

A high-strength fibre rope (1) comprising a rope core as well as a sheathing indicating optical wear, wherein the sheathing comprises a sheath layer (2) made up of textile subunits (3, 4) of a first hierarchy level. An outermost sheath layer (2) is provided, wherein textile subunits (3, 4) of said outermost sheath layer of the first hierarchy level differ from each other in terms of their textile structure, and/or an outermost sheath layer and a further sheath layer underneath said outermost sheath layer are provided, and wherein the textile subunits of the first hierarchy level of said outermost sheath layer differ in their textile structure from that of said further sheath layer. The textile subunits of a lowermost hierarchy level of the rope are neither dispersed in a resin matrix in the outermost sheath layer nor in the further sheath layer arranged underneath the outermost sheath layer.

A production method for a headline sonar cable characterized by steps of: a. providing a first strength member (14); b. coupling to strength member (14) a conductor (122); c. forming a layer of polymeric material about the combination of strength member (14) and conductor (122) while ensuring that the conductor remains slack; d. forming a flow shield around the layer of polymeric material, thus forming an elongatable internally located conductive structure; and e. braiding a strength-member jacket layer (52) of polymeric material around the elongatable internally located conductive structure while ensuring that the conductor is slack when surrounded by the jacket layer (52).

For another embodiment, an optical fibre is wrapped around the exterior of the layer of polymeric material within which is enclosed a braided conductor formed about the first strength member (14). Other embodiments employ further thermo-plastic layers and further sheaths and further conductors.

The present invention concerns a rope health monitoring system and a rope for such rope health monitoring system whereby the rope comprises objects which are remotely detectable, readable and programmable identification (ID) tags and whereby the rope monitoring system comprises said rope, at least one ID tag reader device mounted along said predetermined path of the rope, to detect at least the identity and optionally the historic health status and/or at least one physical rope parameters of the individual rope section provided with and identified by the at least one ID tag, at least one ID tag writing device, to write a new health status of the individual rope section to the at least one ID tag, at least one means to measure at least one rope operation parameter, a computing unit provided with data, whereby the computing unit is equipped with an algorithm capable to compute the relative longitudinal positioning of individual sections of the rope and the additional damage or damages suffered by individual sections of the rope, compute and record the new health status of the individual sections of the rope, store the new health status of the individual section of the rope in the corresponding programmable ID tag of the rope.

A protective textile sleeve and method of construction thereof is provided. The sleeve includes a seamless, tubular braided wall having a plurality of yarns braided with one another. A plurality of the yarns are high temperature, non-heat-shrinkable yams and a plurality of the yarns are heat-shrinkable yams, wherein the heat-shrinkable yams are shrinkable at a temperature that does not cause the high temperature, non-heat-shrinkable yarns to shrink. The sleeve has a first length and first thickness upon being braided, and a second length that less than the first length and a second thickness that is greater than the first thickness upon being exposed to a single heat-treat process.

A longitudinal element produced with a core made of high-strength fibers and at least one metal casing, preferably steel, surrounding this core. In this way, there is the significant advantage that these high-strength fibers, which are very lightweight in relation to their strength, are protected in a number of ways, namely against humidity, moisture, UV light and other environmental influences. In addition, the metal casing provides the fibers with protection against transverse loads. In this way, all the high-strength properties of the traction or suspension means are maintained over a sustained period

A rope having a core for providing strength to the rope, where at least a metal or composite woven or warp knitted fabric having multiple substantially parallel elongated metal elements is provided around the core for protecting said core from impact and cutting, and where the multiple substantially parallel elongated elements are in the warp direction and held by yarns.