Abstract: Embodiments herein are directed to a traction sheave assembly that includes an actuator, a shaft, at least one meshing gear, a first sheave segment, and a second sheave segment. The shaft includes a first portion and a second portion separated by a collar. At least one spoke extends from an outer surface of the collar. The at least one meshing gear is received by a respective one of the at least one spoke. The first sheave segment has a first sheave receiving gear that engages with the at least one meshing gear. The second sheave segment has a second sheave receiving gear that engages with the at least one meshing gear. The first sheave segment and the second sheave segment rotate independently to have a motion independent from one another when the shaft is rotated to equalize a tension between the suspension members.

Abstract: An elevator system for a building, wherein an elevator shaft becomes taller as the building height increases during a construction phase, includes a self-moving construction-phase elevator car guided on a guide rail section(s) for conveying persons or goods during the construction phase, an assembly platform arranged above the car from which the guide rail section is elongated upwards in a rail assembly phase, an upper protection platform temporarily fixed in the elevator shaft on which the assembly platform is suspended via a cable-based lifting device or is suspended in the rail assembly phase, a lower protection platform, wherein the assembly platform is moved vertically between the upper platform and the lower platform by the lifting device during the rail assembly phase, and a docking device temporarily suspending the car on the lower platform to secure the car for evacuations, the docking device connecting the car to the lifting device.

Abstract: An elevator system capable of reducing the overall installation area of elevators in a building while ensuring the number of passengers in the elevator. The elevator system arranges first and second elevator cars in a single elevator hoistway, having, at a lower portion of each of the first and second elevator cars, respectively, a pair of undercar pulleys are positioned to turn ropes vertically on the outer sides of the first and second elevator cars and horizontally at the bottom, where the arranging direction of the pair of the under-car pulleys of the first elevator car intersects with the arranging direction of the pair of under-car pulleys of the second elevator car when projected onto a horizontal plane.

Abstract: A sheet metal base panel for use in elevators is disclosed wherein the said base panel is made from sheet metal of low thickness without compromising its structural integrity, by a specialised hemming process. The said base panel is constructed from a single sheet of metal and incorporates the top and bottom header to form a unitary component. The construction is such that the headers can be positioned either way and hence possesses rotational symmetry which enables in easier installation. This is achieved by a special bending of the base panel on all edges of both the top side and bottom side, four times—a first 90° bending (1a) followed by a second 90° bending (1b), a third 90° bending (1c) and a fourth 180° hemming (1d) of the open edge formed after the third 90° bending (1c).

Abstract: A stair assistance device and a system for assisting individuals with traversing stairways is provided. Each stair assistance device includes a platform. The platform has a first end that is defined opposite of a second end. Each end has an interface. Each interface is designed to secure the end of the platform to one of a pair of lifts. The lifts are designed to vertically displace the platform from a raised position to a lowered position and vice versa. Multiple stair assistance devices may be used to assist an individual with traversing an entire stairway.

Abstract: A method for forming and smoothing a hollow-profile guide rail of an elevator system uses a smoothing apparatus to smooth mutually opposing surfaces on a hollow-profile guide rail. The smoothing apparatus includes a guide device, a removal device and a pressing device. The guide device has rollers for moving in a low-friction manner in a longitudinal direction along a first of the opposing surfaces and to thus guide the smoothing apparatus along the first surface. The pressing device has spring elements to press the removal device away from the guide device and toward a second of the opposing surfaces. The removal device has a rasp element to remove material from the second surface during a movement in the longitudinal direction along the second surface.

Abstract: A guiding device for an elevator door leaf that includes a body within which at least a first cavity open outwards of said body. The guiding device also includes a first spherical element rotatably inserted in the first cavity and arranged so as to protrude from the first cavity outwards and anti-friction means interposed between the first spherical element and at least one wall delimiting the first cavity to limit the movement of the first spherical element within the first cavity.

Abstract: Systems, apparatuses, and methods are described for a stairlift overspeed safety system are disclosed. The overspeed safety system may include a centripetal cam assembly, a trigger assembly, and a jammer assembly. The centripetal cam assembly may include a spring-loaded plate and a plurality of centripetal cams connected to the spring-loaded plate, configured to move to an extended position when the rail speed exceeds the speed threshold. The trigger assembly may include a trigger plate configured to be pushed by at least one of the centripetal cams when moved to the extended position. Pushing the trigger plate may cause a switch to open to shut off power to the motorized stairlift. The jammer assembly may include a jammer configured to wedge between teeth of a rack and pinion of the motorized stairlift to initiate a deceleration to stop movement of the motorized stairlift.

Abstract: A pulley for guiding a belt for carrying a car and/or a counterweight of an elevator system has a plurality of peripheral, axially spaced channels for receiving ribs of the belt. Each of the channels has two opposing channel flanks for force transmission by frictional engagement with one of the ribs and a peripheral groove between the two channel flanks. A width of the groove is at least 25 percent of an axial spacing of the channels and at least 80 percent of a height of the channels.

Abstract: Method for building an elevator system in a building under construction including: installing in an elevator shaft a movable machine platform supporting an elevator car and a counterweight; installing above the machine platform a lifting platform; raising the lifting platform by a construction crane or lifting device before raising the machine platform; and equipping the lifting platform with a cable catch device having a safety cable arranged between the lifting platform and a cable pulley support fixed above the lifting platform, the safety cable having a first load-bearing cable portion fixed to or above the lifting platform and a last load-bearing cable portion guided through a cable stop device attached to the lifting platform, the cable stop device blocking the last portion to prevent further lowering of the lifting platform after a speed of the last portion relative to the cable stop device exceeds a specified limit.

Abstract: An elevator system includes a hoistway; an elevator car configured to travel in the hoistway; a pit located at a bottom of the hoistway; a safety chain configured to enable or disable motion of the elevator car; and a sensor assembly configured to initiate opening the safety chain to disable motion of the elevator car upon detection of a person in the pit.

Abstract: The present disclosure provides a lift truck attachment system that includes a lift truck weighing device with a carriage mounted scale configured to support load handling fixtures and to be secured to a lift truck carriage. The weighing device includes one or more sensors arranged at a mounting interface between the lift truck carriage and the carriage mounted scale. The lift truck weighing device includes one or more of rails, plates, and/or mounting brackets, as a list of non-limiting examples, arranged at the interface with the one or more sensors, which measure a load from the load handling fixtures.

Abstract: The invention relates to an elevator arrangement, comprising a hoistway one or more vertically oriented guide rail lines in the hoistway for guiding vertical movement of one or more movable elevator units, and one or more movable elevator units mounted in the hoistway vertically movably along one or more guide rail lines, including at least an elevator car, preferably also a counterweight, and a hoisting roping; a movable support structure mounted in the hoistway for supporting said one or more movable elevator units below it via said hoisting roping, and a hoisting machine on the movable support structure for moving the hoisting roping, for thereby moving said one or more movable elevator units. Said movable support structure comprises a body portion, and a shelf structure projecting laterally from the body portion, and the hoisting machine is mounted on the shelf structure. The invention also relates to a method for constructing an elevator implementing the arrangement.

Abstract: An elevator car has one or more sidewalls (4a, 4b) defining an interior space (2) for accommodating passengers; a roof (3) including a support frame (8) and a working platform (12) which is suspendably connected to the support frame (8). The working platform moves between a stowed position, above the interior space, and an operational position, within the interior space. The elevator car also includes a blocking member (20, 21), located at the support frame (8), and arranged to move between an unblocking position and a blocking position. When the blocking member (20, 21) is in the blocking position, the blocking member is configured to prevent the working platform (12) from being moved into the stowed position.

Abstract: The arrangement comprises a self-climbing installation platform comprising two consecutive decks, a machine room deck suspended from the installation platform and an elevator car suspended from the machine room deck. Each deck, the machine room deck and the car are supported movably with guide means on guide rails and locked and unlocked with locking means to the guide rails and/or to guide rail fixing means. Lifting means powered by a power source move the two decks in relation to each other. The installation platform climbs stepwise along the guide rails by alternatingly locking and unlocking the lower deck and the upper deck to the guide rails and/or to the guide rail fixing means and thereafter raising the unlocked deck.

Abstract: A frictionless safety brake actuator (100), a braking system, and an elevator system. The frictionless safety brake actuator (100) for use in an elevator system, includes: a fixed component (110); a movable component (130), configured to be moveable between a first position in which a safety brake is actuated and a second position in which the safety brake is not actuated; a biasing element (120) arranged between the fixed component (110) and the movable component (130) to apply a biasing force to the movable component (130) to bias the movable component (130) away from the fixed component (120) towards the first position; an actuating element (140) connected to the movable component (130); a holding arrangement (150) comprising a latch (154) and a first actuator (152), wherein the first actuator (152) is configured to be selectively operable to move the latch (154) between a holding position and a release position.

Abstract: An elevator system includes a guide rail, an elevator car, a safety brake actuator and a safety brake. The safety brake actuator and the safety brake are mounted to the elevator car to move along the guide rail with the elevator car in use. The safety brake actuator includes an actuation mechanism configured in use to actuate the engagement of the safety brake against the guide rail. The safety brake actuator also includes a proximal surface, the safety brake actuator is mounted adjacent to the guide rail with the proximal surface facing the guide rail and spaced from the guide rail to define a clearance gap between the guide rail and the proximal surface of the safety brake actuator.

Abstract: An elevator system including: an elevator car configured to travel through an elevator shaft; a first guide beam extending vertically through the elevator shaft, the first guide beam comprising a first surface and a second surface opposite the first surface; a propulsion system configured to move the elevator car through the elevator shaft; a first on-board energy management system configured to power the propulsion system, the first on-board energy management system is attached to the propulsion system and configured to travel with the propulsion system.

Abstract: An elevator system includes a hoistway, an elevator car configured to travel in the hoistway, and a pit located at a bottom of the hoistway. A safety chain is configured to enable or disable motion of the elevator car, and a sensor assembly is configured to initiate opening the safety chain to disable motion of the elevator car upon detection of a person in a detection region of the sensor assembly in the hoistway. A test device is configured to test operation of the sensor assembly to detect malfunctioning and/or tampering of operation of the sensor assembly.

Abstract: There is provided a vibration suppression device for a rope-like body of an elevator that can inhibit displacement of the rope-like body from becoming unstable due to amplification of the displacement and can make a movable range of the rope-like body wider. A vibration suppression device (20) includes a movable unit and a stopper. The movable unit can move in a direction in which a distance from an equilibrium position (19) of the rope-like body changes. The stopper restricts movement of the movable unit to a position closer than a first distance (d1) from the equilibrium position (19). The movable unit includes a displacement amplifier and a restriction member. The displacement amplifier is arranged to be directed to a first position (P1) of the rope-like body. The displacement amplifier amplifies displacement of the rope-like body. The restriction member inhibits the rope-like body from approaching the displacement amplifier.