Patent classifications
D07B5/00
Composite Control Cables and Stabilizing Tendons for Aircraft Applications and Method for Manufacture of Same
Control and stabilizing cables and tendons for high altitude aircraft and airships having lightweight, high strength and low CTE are disclosed, along with a method and machine for fabrication of same. The cable is comprised of a fiber prepreg tow encased in a polymer sleeve with one bobbin at each end to facilitate connections. Consolidating the fiber prepreg tow along the length of the cable using high temperature shrink tubing, such as polyvinylidene fluoride (PVDF), allows for eliminating the twisting of the fiber prepreg tow, thus reducing the number of wraps around the bobbins. Eliminating the twists in the fiber prepreg tow also reduces the length of fiber needed, and therefore the overall change in length of the control cable with temperature variations is reduced. Additional cable strength can be achieved by adding and holding significant tension on the fiber prepreg tow by applying weight during the curing process.
Composite Control Cables and Stabilizing Tendons for Aircraft Applications and Method for Manufacture of Same
Control and stabilizing cables and tendons for high altitude aircraft and airships having lightweight, high strength and low CTE are disclosed, along with a method and machine for fabrication of same. The cable is comprised of a fiber prepreg tow encased in a polymer sleeve with one bobbin at each end to facilitate connections. Consolidating the fiber prepreg tow along the length of the cable using high temperature shrink tubing, such as polyvinylidene fluoride (PVDF), allows for eliminating the twisting of the fiber prepreg tow, thus reducing the number of wraps around the bobbins. Eliminating the twists in the fiber prepreg tow also reduces the length of fiber needed, and therefore the overall change in length of the control cable with temperature variations is reduced. Additional cable strength can be achieved by adding and holding significant tension on the fiber prepreg tow by applying weight during the curing process.
Rope having an end connector segment comprising two rope-branches for making noosed connections
A rope (1) according to the invention comprises a main rope segment (4), a branching position (5) and an end connector segment (6), wherein the end connector segment comprises a first rope-branch (11) and a second rope-branch (12). The first rope-branch (11) comprises a noosed first rope-branch portion (21N) for making a noosed connection with a thickened rope portion, or a thickened first rope-branch portion for making a noosed connection with a noosed rope portion. The second rope-branch (12) comprises a noosed second rope-branch portion for making a noosed connection with a thickened rope portion, or a thickened second rope-branch portion (22T) for making a noosed connection with a noosed rope portion. The rope according to the invention allows for many various favourable manners of connecting the rope to other ropes and/or to other types of external objects.
ROPE ASSEMBLIES
A rope assembly comprises a rope, wherein the rope comprises a plurality of braided or twisted strands. The rope assembly also comprises an attachment structure formed of a polymer. The attachment structure defines an opening through the rope between the strands. The strands are fixedly held in the attachment structure by being encased within the polymer.
Transportation of Parallel Wire Cable
A preassembled parallel wire cable creates a random cast of loops. Any of the random cast of loops is hung for transport, thus eliminating costly and time-consuming coiling and reeling operations.
Rope for elevator and manufacturing method therefor
The present invention relates to a rope for an elevator. The rope for the elevator comprises: a center strand formed by twisting a plurality of wires; inner layer strands formed by twisting the plurality of wires and arranged along the outer periphery of the center strand; and outer layer strands formed by twisting the plurality of wires and arranged along the outer periphery of the inner layer strands, wherein ten of each of the inner layer strands and the outer layer strands are prepared, the diameter of the center strand, the diameter of the inner layer strand and the diameter of the outer layer strand are respectively 0.33-0.35 times, 0.13-0.15 times and 0.22-0.24 times as large as the diameter of a first imaginary circle circumscribed around the outer layer strands, and a fill factor is 64-67%.
Innerduct structure containing monofilament jacketed woven rope
An article containing an innerduct structure and a woven rope located within the innerduct structure. The woven rope an inner portion comprising a plurality of multifilament fibers in the length direction of the woven rope and a jacket portion covering the inner portion. The jacket portion contains a plurality of monofilament fibers in the length direction of the woven rope and at least one multifilament fiber in the circumferential direction interwoven with the monofilament fibers in the length direction of the jacket portion. The monofilament fibers of the jacket portion form the majority of the outer surface of the woven rope.
CABLE LAY BRAID AND PRODUCTION METHOD
Cable lay braid having a plurality of intertwined twists, wherein each twist is laid from a plurality of twisted strands, characterized in that each strand is formed from a plurality of twisted yarns or twines.
Tensairity structure with shape-memory wire ropes
The present invention relates to a structural element known in the technical field as tensairity, which introduces as distinctive elements with respect to the known art: (i) ropes in the shape-memory alloy (SMA) with superelastic (SE) and shape memory (ME) behavior; (ii) mechanical tensioners for the adjustment of the initial tension in the ropes; (iii) optionally a control apparatus (processor) is connected to electric circuits that induce flow of intensity variable current through the SMA wire ropes; (iv) optionally devices for real-time monitoring of the temperature and the level of tension in the SMA ropes; (v) optionally devices for real-time monitoring of the tensairity oscillations; (vi) optionally new structural geometries capable of sustaining static actions and multidirectional dynamics.
Tensairity structure with shape-memory wire ropes
The present invention relates to a structural element known in the technical field as tensairity, which introduces as distinctive elements with respect to the known art: (i) ropes in the shape-memory alloy (SMA) with superelastic (SE) and shape memory (ME) behavior; (ii) mechanical tensioners for the adjustment of the initial tension in the ropes; (iii) optionally a control apparatus (processor) is connected to electric circuits that induce flow of intensity variable current through the SMA wire ropes; (iv) optionally devices for real-time monitoring of the temperature and the level of tension in the SMA ropes; (v) optionally devices for real-time monitoring of the tensairity oscillations; (vi) optionally new structural geometries capable of sustaining static actions and multidirectional dynamics.