Abstract:
A belt for suspending and/or driving an elevator car includes a plurality of wires arranged into one or more cords and a jacket substantially retaining the one or more cords. Each cord includes a plurality of wires arranged around at least one non load-bearing core. An elevator system includes an elevator car and one or more sheaves. One or more belts are operably connected to the car and interactive with the one or more sheaves for suspending and/or driving the elevator car. Each belt of the one or more belts includes a plurality of wires arranged into one or more cords and a jacket substantially retaining the one or more cords. Each cord includes a plurality of wires arranged around at least one non load-bearing core.
Abstract:
An elevator system includes an elevator car, one or more sheaves, and one or more belts operably connected to the car and interactive with the one or more sheaves for suspending and/or driving the elevator car. The one or more belts include a plurality of wires arranged into one or more cords, and a jacket substantially retaining the one or more cords. A cord ratio, between a smallest sheave diameter (D) of the one or more sheaves of the elevator system that are interactive with the belt and a largest cord diameter (d c ) of the one or more cords, (D/d c ) is less than about 55. A wire ratio, between the smallest sheave diameter (D) and the largest wire diameter (d w ) of the plurality of wires, (D/d w ) is between about 160 and about 315.
Abstract:
A drive belt (30) includes a body portion having at least a drive surface (32) adapted to engage a member (23) to be driven by the drive belt (30). At least a portion of at least one lateral surface (42) includes a protective layer (50). In a disclosed example, the body of the belt (30) is formed using a first polymer material and the protective layer (50) is formed using a second, different polymer material. The protective layer (50) can have different wear characteristics to resist abrasion, for example, and a different hardness or friction characteristic than the material selected to form the body of the belt including the drive surface (32).
Abstract:
A load bearing member is provided including at least one load bearing segment having a plurality of load carrying fibers arranged within a matrix material. At least a portion of the load bearing member has a radius of curvature when the load bearing member is untensioned.
Abstract:
A method for constructing an interface between a sheave and a coated belt or rope of an elevator system, includes determining the surface energy of a surface of a coated belt or rope; and selecting a sheave such that the sheave has a work of adhesion between the coated belt or rope and the sheave, the work of adhesion meeting a defined relationship with a work of adhesion threshold.
Abstract:
A method for applying a coating to a substrate includes obtaining a fluorinated polymer compound, where the fluorine is chemically or covalently bonded to the polymer molecule; and coating the surface of the substrate with the fluorinated polymer compound.
Abstract:
An exemplary elongated elevator load bearing member of a traction elevator system includes a plurality of tension elements. A plurality of weave fibers transverse to the tension elements are woven with the tension elements. The weave fibers define at least one traction surface of the load bearing member.
Abstract:
A passenger conveyor handrail (30) includes a sliding fabric layer (36) having a low-friction coating (40) on at least one side (38) of the sliding fabric layer (36). A disclosed example includes the low-friction coating (40) on selected portions of the one side (38) of the sliding fabric layer (36). Another disclosed example includes a coating on both sides (38, 39) of the sliding fabric layer (36). Various manufacturing techniques are described.
Abstract:
A passenger conveyor handrail (30) includes a plurality of teeth (36) that interact with a toothed driving member (42). In a disclosed example, a low friction material (60) is placed near an end of the teeth (36) on the handrail (30). The low friction material (60) facilitates the teeth sliding along a guidance (70) but does not interfere with a desired engagement between the teeth (36) and corresponding teeth (46) on the driving member (42).
Abstract:
A passenger conveyor system (20) includes a handrail assembly (30) having a guidance (40) for guiding a moving handrail (32). The example guidance includes an extrusion and presents a continuous, uninterrupted guiding surface (44) along which the handrail (32) travels. In a disclosed example, a single-piece extrusion (50) extends along an entire length of a balustrade (34). A disclosed example includes a first material forming a body of the guidance (40) and a second material (70) establishing the guiding surface (44).