Abstract:
A large diameter rope (10) having improved fatigue life on a sheave, pulley, or drum is disclosed. This rope includes a blend of HMPE filaments (16) and liquid crystal polymer filaments (18) selected from the group of lyotropic polymer filaments and thermotropic polymer filaments. The rope may be constructed as a braided rope, a wire-lay rope, or a parallel core rope.
Abstract:
A security device has a flexible strap (26) with a lock unit (28) attached at each end. The strap (26) comprises a plurality of longitudinally extending multi-filament cables or ropes (2) arranged in a substantially planar array embedded in an elastomeric material (4). The cables or ropes (2) have a coating of primer for creating a bond with the elastomeric material (4). The primer may be restricted to the external surface of the cables or ropes (2), or some of the surfaces of the filaments may be free of primer. This facilitates relative movement of the filaments during flexure or compression of the strap (26). Moreover, an extrusion process for manufacturing the strap (26) including a priming station (12) is disclosed.
Abstract:
There is provided a high-tensile synthetic fiber rope having a low percentage elongation, the rope dramatically improving the strength utilization rate of the tensile strength of the synthetic fibers, and ensuring the percentage elongation approximately the same as the percentage elongation of the synthetic fibers used in the rope. The synthetic fiber rope includes a plurality of strands twisted or braided together, each of the strands including: a tubular woven fabric woven with warp and weft yarns made of synthetic fibers; and a core material disposed in the tubular woven fabric, the core material being constituted by a plurality of parallel-bundled yarns made of the synthetic fibers in the tubular woven fabric.
Abstract:
Ein kombiniertes Seil mit einem Kernseil (1) aus hochfesten Kunststofffasern, die als ein verdrilltes Monofilbündel oder eine Mehrzahl von verdrillten Monofilbündeln vorliegen, und mit einer Außenlage aus Stahldrahtlitzen (4) ist dadurch gekennzeichnet, dass das bzw. die Monofilbündel unter Durchmesserverringerung gedehnt und in diesem Zustand durch eine, insbesondere geflochtene, Ummantelung (2) gehalten ist bzw. sind. Die Dehnung des Kernseiles unter Last wird dadurch verringert, so dass sich die Lastverteilung zwischen dem Stahlquerschnitt und dem Kunststoffquerschnitt des Seiles verbessert. Um im gleichen Sinne umgekehrt das Dehnverhalten der Litzenlage demjenigen des Kernseiles anzunähern, weist das Seil eine Zwischenlage (3) aus einem elastischen Kunststoff auf, in den die Stahldrahtlitzen (4) mit einem Abstand voneinander eingedrückt sind, derart, dass sich die Außenlage unter Last dehnt und radial zusammenzieht. Analog kann eine Litze aufgebaut werden.
Abstract:
One aspect of this invention concerns a multi-strand steel wire rope (28, 32, 36, 46, 50) comprising multiple strands (3, 10, 38) laid up helically on a core (30, 34, ), characterised in that at least some of the strands are deep strands (10, 38), i.e. strands with a heightwidth ratio greater than unity. Another aspect of the invention concerns the deep strand (10, 38) itself.
Abstract:
A large diameter rope (10) having improved fatigue life on a sheave, pulley, or drum is disclosed. This rope includes a blend of HMPE filaments (16) and liquid crystal polymer filaments (18) selected from the group of lyotropic polymer filaments and thermotropic polymer filaments. The rope may be constructed as a braided rope, a wire-lay rope, or a parallel core rope.