Abstract:
A synthetic rope for an elevator having improved resistance to compression and abrasion is provided and comprises a plurality of strands forming layers of the rope, each strand formed from a plurality of pre-twisted strands made from high modulus synthetic filaments. 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 that provides for traction with the drive sheave. An elevator system comprising the claimed rope is also provided.
Abstract:
Composite reinforcements (100, 100A, 100B, 100C) are formed by combining a first plurality of continuous fibers (102) with a second plurality of continuous fibers (106) with the first and second pluralities of continuous fibers (102, 106) being impregnated with at least one appropriate resin material (R1, R2, R3) and pultruded to form the reinforcements. The first and second pluralities of continuous fibers (102, 106) can be intermixed with one another or combined as a central core (104, 132) of the first fibers with a jacket (108, 108A, 108B, 134) formed by the second fibers. In either event, the combined fibers are formed as an elongated rod (110) and rigidified using the resin material. The first fibers are glass, either E-glass or S-2 glass, with the second fibers being either carbon, aramid, S-2 glass or AR-glass. The composite reinforcements of the present application, formed by combining these materials, have characteristics very similar to steel under tensile loading but with superior corrosion resistance and less detrimental deterioration characteristics.
Abstract:
A cable for reinforcing objects formed of elastic or easily deformable material, such as automobile tires and conveyor belts, has as conventional components a core and at least one peripheral layer surrounding the core, each component being formed of elements, such as individual wires or strands of wires. The resistance of such a reinforcing cable to fatigue and/or to wear is increased due to the fact that at least two consecutive components in contact with each other in radial direction are constituted of elements made of material having moduli of elasticity which differ from one component to the other.