Abstract:
The invention relates to a hybrid rope comprising a core element, a first and a second metallic closed layer surrounding said core element. The core element includes a bundle or construction of synthetic yarns. The first metallic closed layer includes a plurality of first wirelike members helically twisted together with the core element in a first direction. The second metallic closed layer includes a plurality of second wirelike members helically twisted together with said core element and said first metallic closed layer in a second direction. The cross-sectional area of the core element is larger than the total cross-sectional area of the first and second metallic closed layers.
Abstract:
In an elevator wire rope (1) structured by twisting a plurality of sub-wire ropes (3), each sub-wire rope (3) being formed by twisting a plurality of strands (2), each strand (2) being formed by twisting a plurality of fine steel wires (2a to 2g), the interior of the wire rope being filled with a resin (4), and the surface of the wire rope being covered with a resin (5), wherein the direction in which the fine steel wires (2a to 2g) and the strands (2) are twisted and the direction in which the sub-wire ropes (3) are twisted are mutually opposite, and the diameter d 4 of the inscribed circle of the plurality of twisted sub-wire ropes (3) is smaller than the diameter d 2 of the sub-wire rope (3).
Abstract:
An uncured, composite rope includes at least one inner tow of structural fibers of a first material and a plurality of outer tows of structural fibers disposed about the at least one inner tow, the structural fibers of at least one of the plurality of outer tows being made from a second material that is different from the first material. The uncured, composite rope further includes an uncured polymeric resin impregnated into the at least one inner tow and the plurality of outer tows.
Abstract:
A synthetic rope (1) for an elevator having improved resistance to compression and abrasion is provided and comprises a plurality of strands (7) forming layers of the rope, each strand formed from a plurality of pre-twisted strands (19) from high modulus synthetic filaments (21). One or more of the strands or layers of strands may be impregnated with a lubricant, such as polytetrafluoroethylene, to reduce the abrasion among the strands and substrands, and increase the service life of the rope. The exterior of the rope may be covered by a jacket (35) that provides for traction with the drive sheave. An elevator system comprising the claimed rope is also provided.
Abstract:
Tire for vehicle wheels, comprising metallic reinforcing cords made of a single strand of elementary filaments preformed by sinusoidal waving and wound together. Said metallic cords show a value of the integral of the breaking stress not lower than 5000 J/m3.
Abstract:
A pneumatic tyre (1) comprises a tread reinforcing belt (7) made of metallic cords (10), wherein each of the metallic cords is made up of six to twelve metallic filaments (F) whose diameter (d) is not less than 0.15 mm but less than 0.25 mm, the six to twelve metallic filaments (F) are grouped into a plurality of bunches (B) each including two to four filaments (F), the filaments of each bunch are twisted together at a first twisting pitch (Pb), the bunches (B) are twisted together into the cord at a final twist pitch (Pc) of from 10 to 40 mm, the first twisting pitch (Pb) is more than the final twist pitch (Pc), and the bunches (B) each include at least one waved filament (FA) which is two-dimensionally waved at wave pitches (Pw) in a range of from 5 to 30 times the diameter (d) of the filament and a wave height (h) in a range of from 0.2 to 3.0 times the diameter (d).
Abstract:
A titanium alloy cable comprises a plurality of individual wire filaments (20). Groups of wire filaments are twisted together in a first helical direction around a central wire filament to make a strand (10). A plurality of strands are twisted together in a second helical direction around a core strand to make a strong, flexible cable. The first helical direction has the opposite sense to that of the second helical direction. In one embodiment, the cable has one hundred and thirty three wire filaments, each of diameter 0.0025 inches (64νm), arranged in nineteen equivalent strands and the titamium alloy is Ti-6 wt % A1-4 wt % V.