Abstract: A method and apparatus includes an indicator mark that is located on at least one tension member at a predetermined distance from a fixed point. A visual indication of tension member replacement is provided when the indicator mark approaches a specified distance from the fixed point after a tension member length adjustment.

Abstract: An illustrative example embodiment of an elevator sheave assembly includes a plurality of polymer rings that are secured together. The plurality of polymer rings includes at least two polymer rings that each have an outer circumferential surface that defines a portion of a belt guiding surface adjacent a flange at a longitudinal end of the sheave assembly. The at least two polymer rings each include a bearing supported inside the ring.

Abstract: A method of monitoring a suspension member of an elevator system includes determining a condition of the suspension member based on a combination of an electrical inspection technique, a use indicator corresponding to an amount of use of the suspension member, and a mechanical characteristic indicator corresponding to at least one mechanical characteristic of the suspension member. The suspension member is removed from service based on an indication from the electrical inspection technique, the mechanical characteristic indicator, and the use indicator satisfying at least one predetermined combination of criteria.

Abstract: An illustrative example embodiment of an elevator sheave assembly includes a plurality of polymer rings that are secured together. The plurality of polymer rings includes at least two polymer rings that each have an outer circumferential surface that defines a portion of a belt guiding surface adjacent a flange at a longitudinal end of the sheave assembly. The at least two polymer rings each include a bearing supported inside the ring.

Abstract: An isolating decoupler comprising a shaft, a pulley journalled to the shaft on at least one bearing, a one-way clutch engaged with the shaft, a torsion spring engaged between the one-way clutch and the pulley, the shaft comprises an inner race of the at least one bearing, and the torsion spring having an end welded to the one-way clutch and having another end welded to the pulley.

Abstract: An isolator comprising a pulley having a pulley stop, a plate attached to the pulley, a shaft, the pulley journalled to the shaft, a torsion spring attached to the shaft, a damping member attached to the torsion spring, the damping member disposed between the plate and the pulley, and the damping member compressing a damping fluid against the pulley stop.

Abstract: Described herein is a tensioner device, and assemblies and methods of manufacture thereof. The tensioner device may be adapted to create a target tension in an associated belt based on the measured length of the belt. The tensioner device may include an engagement member having a surface adapted to engage the belt and a biasing element associated with the engagement member. The biasing element has a loaded configuration that causes the engagement member to exert a force on the belt to create the target tension. In one example, the biasing element is manipulated into a loaded configuration so that the biasing element exhibits a deflection and an effective spring rate for creating the target tension. The belt may be trapped within the tensioner device with a bracket assembly enclosing one or more runs of belt relative to the engagement member.

Abstract: Described herein is a tensioner device, and assemblies and methods of manufacture thereof. The tensioner device may be adapted to create a target tension in an associated belt based on the measured length of the belt and/or measure characteristics of a biasing element, such as a stiffness of the biasing element. A biasing element may exhibit a measured stiffness and be associated with a damping assembly and a base of the tensioner device. An engagement member may be associated with the damping assembly for movement therewith and angularly displaceable relative to the base and the biasing element to tension the belt. In one example, the biasing element may be connected to the damping assembly at a position determined by the measured stiffness to define a value of the angular displacement of the engagement member relative to the biasing element and create a target tension in the belt.

Abstract: An isolator decoupler comprising a shaft, a pulley journalled to the shaft, a one-way clutch engaged with the shaft, a spring carrier engaged with the one-way clutch, the spring carrier having a spring carrier surface, a torsion spring having a first end laser welded to the pulley and a second end laser welded to the spring carrier, the torsion spring having a volute with a width w, an annular spring support member having a spring support member outside surface, the annular spring support member independently moveable from the spring carrier and independently moveable from the shaft, a gap g between the annular spring support member and the spring carrier, the gap g being less than the width w, the first end comprising a first end coil, the first end coil bearing upon the spring support member outside surface, the first end coil laser welded to the spring support member outside surface, a torsion spring radial contraction limited by engagement with the spring carrier surface, and the gap g and the width w hav

Abstract: An isolating decoupler comprising a shaft, a pulley journalled to the shaft on at least one bearing, a one-way clutch engaged with the shaft, a torsion spring engaged between the one-way clutch and the pulley, the shaft comprises an inner race of the at least one bearing, and the torsion spring having an end welded to the one-way clutch and having another end welded to the pulley.

Abstract: An isolating decoupler comprising a shaft, a pulley journalled to the shaft on at least one bearing, a one-way clutch engaged with the shaft, a torsion spring engaged between the one-way clutch and the pulley, the shaft comprises an inner race of the at least one bearing, and the torsion spring having an end welded to the one-way clutch and having another end welded to the pulley.

Abstract: An isolator comprising a pulley having a pulley stop, a plate attached to the pulley, a shaft, the pulley journalled to the shaft, a torsion spring attached to the shaft, a damping member attached to the torsion spring, the damping member disposed between the plate and the pulley, and the damping member compressing a damping fluid against the pulley stop.

Abstract: An isolator comprising a pulley and a shaft, the pulley journalled to the shaft, a load stop, a torsion spring, a damping member attached to the torsion spring, the damping member disposed between the load stop and the torsion spring, and the damping member compressing a damping fluid against the load stop; where the load stop is attached to the pulley or the shaft and the torsion spring is attached to the shaft or the pulley, respectively.

Abstract: A tensioner comprising a base, a first tensioner subassembly pivotally mounted to the base, a second tensioner subassembly pivotally mounted to the base, a tensile member joining the first tensioner subassembly and the second tensioner subassembly, the first tensioner subassembly urged in a direction opposite the second tensioner subassembly, and a one-way clutch frictionally engaged with the first tensioner subassembly whereby a relative movement of the first tensioner subassembly away from the second tensioner subassembly is restricted for a first predetermined operating condition and a relative movement of the first tensioner subassembly toward the second tensioner subassembly is not restricted for a second predetermined operating condition.

Abstract: A tensioner comprising a bracket, a first swing arm pivotally mounted to the bracket, a first pulley journalled to the first swing arm, a second swing arm pivotally mounted to the bracket, a second pulley journalled to the second swing arm, and a damping member connected between the first swing arm and the second swing arm, the damping member having a asymmetric damping characteristic.

Abstract: An isolator decoupler comprising a shaft, a pulley journalled to the shaft, a one-way clutch engaged with the shaft, a spring carrier engaged with the one-way clutch, the spring carrier having a spring carrier surface, a torsion spring having a first end laser welded to the pulley and a second end laser welded to the spring carrier, the torsion spring having a volute with a width w, an annular spring support member having a spring support member outside surface, the annular spring support member independently moveable from the spring carrier and independently moveable from the shaft, a gap g between the annular spring support member and the spring carrier, the gap g being less than the width w, the first end comprising a first end coil, the first end coil bearing upon the spring support member outside surface, the first end coil laser welded to the spring support member outside surface, a torsion spring radial contraction limited by engagement with the spring carrier surface, and the gap g and the width w hav

Abstract: An isolating decoupler comprising a shaft, a pulley journalled to the shaft on at least one bearing, a one-way clutch engaged with the shaft, a torsion spring engaged between the one-way clutch and the pulley, the shaft comprises an inner race of the at least one bearing, and the torsion spring having an end welded to the one-way clutch and having another end welded to the pulley.

Abstract: An isolating decoupler comprising a hub, a pulley journalled to the hub, a torsion spring having a first torsion spring end welded directly to the hub, a wrap spring having a first wrap spring end welded directly to a second torsion spring end, a wrap spring outer surface fictionally engaged with a pulley inner surface, and a wrap spring second end temporarily engagable with the torsion spring first end whereby the frictional engagement between the wrap spring outer surface and the pulley inner surface is progressively released as a torque load increases.

Abstract: A tensioner comprising a base, a first tensioner subassembly pivotally mounted to the base, a second tensioner subassembly pivotally mounted to the base, a tensile member joining the first tensioner subassembly and the second tensioner subassembly, the first tensioner subassembly urged in a direction opposite the second tensioner subassembly, and a one-way clutch frictionally engaged with the first tensioner subassembly whereby a relative movement of the first tensioner subassembly away from the second tensioner subassembly is restricted for a first predetermined operating condition and a relative movement of the first tensioner subassembly toward the second tensioner subassembly is not restricted for a second predetermined operating condition.

Abstract: An isolating decoupler comprising a hub, a pulley journalled to the hub, a torsion spring having a first torsion spring end welded directly to the hub, a wrap spring having a first wrap spring end welded directly to a second torsion spring end, a wrap spring outer surface fictionally engaged with a pulley inner surface, and a wrap spring second end temporarily engagable with the torsion spring first end whereby the frictional engagement between the wrap spring outer surface and the pulley inner surface is progressively released as a torque load increases.