Abstract: An illustrative example embodiment of an elevator system includes an elevator car situated for movement among a plurality of landings. The elevator car includes a car door and a door mover. A door interlock associated with a landing door at each of the landings is configured to couple the associated landing door with the car door. The door interlocks respectively include a lock switch. A controller is configured to: cause the elevator car to move to at least one of the landings; when the elevator car is at the at least one landing, cause the door mover to instigate movement of the door interlock sufficient to at least temporarily change a position of the lock switch; and locate a malfunctioning one of the lock switches at one of the landings based on the movement of the door interlock.

Abstract: An illustrative example method of positioning an elevator door interlock includes positioning an elevator car in a hoistway near the hoistway door so that at an elevator door coupler is aligned with the interlock, opening a door of the elevator car and the hoistway door, accessing an adjustment mechanism supporting the interlock from outside of the hoistway, and using the adjustment mechanism to adjust a position of the interlock relative to the hoistway door from outside the hoistway.

Abstract: A method of operating a building elevator system having a plurality of elevator systems organized into multiple elevator groups including: receiving an elevator call from a destination entry device in communication with the building elevator system; obtaining a favorability score from each of the multiple elevator groups of the building elevator system; determining an elevator group of the multiple elevator groups with the highest favorability score; and routing the elevator call to the elevator group of the multiple elevator groups with the highest favorability score.

Abstract: An illustrative example elevator control system includes a plurality of sway sensors situated within a hoistway of the building. The sway sensors respectively include a contact surface situated to be contacted by a vertically extending elongated member of an elevator when the elongated member moves laterally in the hoistway. The sway sensors respectively provide an indication of contact between the contact surface and the elongated member. A controller receives an indication of building movement and the indications from the sway sensors. The controller determines whether at least one condition exists in the hoistway based on the indications and implements an adjustment to elevator movement control when the at least one condition exists.

Abstract: An illustrative example embodiment of an elevator compensation assembly includes at least one compensation sheave having an outer surface configured to engage a plurality of compensation rope members. A guard has an inner surface situated adjacent the outer surface of the compensation sheave. A plurality of dividers that extend away from at least one of the outer surface of the compensation sheave or the inner surface of the guard. The dividers establish a space between adjacent ones of the dividers for accommodating a compensation rope member.

Abstract: Disclosed is a method of expanding an elevator system in a hoistway, involving: connecting an elevator car at a first level to an overhead winch that is connected to a hoist-beam at a second level, the elevator car being supported by a rail system, the rail system defining, at a first level, first and second rails with first and second rail terminal ends; connecting a machine system mounted to the first rail terminal end to a machine hoist mounted at the second level; removing a dead-end hitch from the second rail terminal end; hoisting the machine system to the second level; extending the rail system to the second level to define third and fourth rail terminal ends; hoisting the elevator car and the dead-end hitch to the second level; and installing the machine system and the dead-end hitch at the second level, to the third and fourth rail terminal ends.

Abstract: Disclosed is an elevator system including a system controller, wherein the system controller is configured to: render a plurality of determinations for effecting elevator service during a lockdown condition, including a first determination that an elevator car is transporting a first passenger to a first floor, a second determination that a lockdown event is occurring at a second floor, a third determination for the elevator car to transport the first passenger to a third floor to avoid travel proximate the second floor, and execute one or more communications including: a first communication to an elevator car controller for the elevator car to effect the third determination.

Abstract: A jump elevator includes a machine room provided in the hoistway and configured to be fixed or movable relative to the hoistway; at least one lifting assembly comprising: a frame attached to the outside of the hoistway and partially extending into the hoistway; a pulley assembly including a winch, a fixed end, and a plurality of pulleys disposed on the machine room and the frame; wherein a pulling line is disposed between the winch, the plurality of pulleys, and the fixed end; wherein the at least one lifting assembly is disposed below the covering portion of the hoistway.

Abstract: An elevator door control system, an elevator system, and an elevator door control method based on to-be-carried object grouping identification. The elevator door control system includes one or more three-dimensional sensors, arranged to capture three-dimensional data of to-be-carried objects in an elevator waiting region, wherein the three-dimensional data includes depth data; a data processing device, communicating with the three-dimensional sensor, and configured to receive and process the three-dimensional data, to provide grouping data of one or more groups obtained according to correlations between the to-be-carried objects and position data of each to-be-carried object in the elevator waiting region; and a control device, connected to an elevator door, communicating with the data processing device, and configured to control operation of the elevator door according to the grouping data and the position data.

Abstract: A method is disclosed of retrofitting an elevator machine with primary and secondary braking, the machine being disposed on a machine support frame in an elevator machine room, and engaging one or more ropes for providing selective movement of an elevator car disposed in an elevator shaft, the machine having a drive sheave including a cylindrical brake drum, and brake components including dual brake arms; the method including: removing the brake components; affixing flanged disc segments about the drum and interlocking the flanged disc segments to form a brake rotor; and mounting respective brake calipers to frame mounts for providing primary and secondary braking to the elevator machine.

Abstract: A linear propulsion machine and system (10) is disclosed that includes a stator (30) having a plurality of teeth (34) and a mover (32) moveable in a linear direction along the stator (30). The mover may include a plurality of spaced apart ferromagnetic strata (40), a plurality of slots (42), a plurality of wire coils (44), and a plurality of magnet layers (46). Each of the slots (42) may be adjacent to at least one of the strata (40). Each coil (44) may be disposed in a slot (42). Each magnet layer (46) may be sandwiched between strata (40) and disposed inside one of the plurality of coils (44). Each coil (44) is disposed perpendicularly to the direction of magnetic flux of the magnet layer (46) around which the coil (44) is wound. In an embodiment, the teeth (34) or the magnet layer (46) may be disposed at an angle.

Abstract: An overspeed protection switch, an overspeed governor assembly and an elevator system are provided by the present disclosure. The overspeed protection switch includes: a trigger device including a trigger member and at least one protrusion, wherein the trigger member is capable of rotating to a triggered position from an untriggered position when being toggled, and the at least one protrusion is connected to the trigger member and rotates together with the trigger member; an actuation device including an action end capable of performing a linear movement; and a reset member which is connected with the action end of the actuation device and is translated with the linear movement of the action end of the actuation device so as to push one of the at least one protrusion to drive the trigger member to return to the untriggered position from the triggered position.

Abstract: A device for limiting sway in a travelling cable (6) in an elevator system is provided. The device comprises: a channel extending in a first direction for receiving the travelling cable (6) therein, wherein the channel is configured to be mounted in an elevator hoistway (2) such that the first direction corresponds to a direction of motion of an elevator car (4) within the hoistway (2); and an element (20) configured to move in the first direction along an open side of the channel simultaneously with an elevator car (4) and to push the travelling cable (6) into the channel when the element (20) moves along the open side thereof.

Abstract: An actuation mechanism for an elevator safety gear comprises an engagement element, at least two permanent magnets and at least one electric coil. The engagement element is movable between an engaged position in which it engages with the guide member of the elevator system and a disengaged position in which it does not engage with the guide member of the elevator system. The at least two permanent magnets are arranged in a configuration generating a repulsive force (FR) between the at least two permanent magnets and urging the engagement element towards the engaged position. The at least one electric coil is configured for generating an electromagnetic force urging the engagement element towards the disengaged position and/or for holding the engagement element in the disengaged position, when an electric current is flowing through the at least one electric coil.

Abstract: A system includes a memory system and a processor of a first processing system including a processor core, a direct memory access controller, and a communication interface. The processor core is configured to execute a plurality of instructions to configure the direct memory access controller to trigger a transmitter interrupt upon transmitting a first synchronization message through the communication interface to a second processing system, configure the direct memory access controller to trigger a receiver interrupt upon receiving a second synchronization message from the second processing system, determine a time difference between triggering of the transmitter interrupt and the receiver interrupt, and adjust a synchronization skew of a real-time scheduler based on the time difference to tune real-time synchronization between the first processing system and the second processing system.

Abstract: Elevator car ceiling access systems are provided. The elevator car ceiling access systems include an elevator car having a top and at least one elevator car door, an access panel located in a top of the elevator car, a car door operator, an access panel operator, and a selectively engageable coupling arranged between the car door operator and the access panel operator and arranged to selectively couple to the car door operator and the access panel operator to enable selective opening of the access panel.

Abstract: A guide device and an elevator system are provided by the present application. The guide device is configured to guide a compensation chain of an elevator system and includes: a fixed mechanism, which is configured to install to an elevator hoistway, for example a stationary object such as a hoistway wall, a rail or a pit ground, and provide support for the guide device; and a guide mechanism connected to the fixed mechanism; wherein in a state where the guide mechanism is subjected to an external force exceeding a preset value, the guide mechanism is capable of reciprocating in a vertical direction relative to the fixed mechanism.

Abstract: An elevator car is provided and includes a car frame which translates along a guide rail during ascents or descents, a safety disposed along the car frame to selectively engage with the guide rail to selectively permit vertical elevator car movement, an electronic safety actuator (ESA) and a control system. The ESA actuates the safety and includes an ESA body secured to the car frame with horizontal maneuverability and defining a groove through which the guide rail translates during the vertical elevator car movement, a magnetic guide operably disposed within the groove to exert magnetic force on the guide rail and a sensor disposed within the groove to sense horizontal distance between the guide rail and corresponding portions of the ESA body. The control system controls the magnetic guide to exert a magnetic force in accordance with reading of the sensor to maneuver the ESA body horizontally.

Abstract: A method of imprinting a belt sheave without removal of an associated belt includes placing a knurling wheel of a tool against a circumferentially extending section of a sheave not in contact with the belt. The sheave is then rotated to induce rotation of the knurling wheel. A jack screw of the tool is actuated to bias the knurling wheel against the sheave for production of imprints upon the sheave.

Abstract: A winding overhang (20) configured for supporting windings of an electric motor (40) comprise a cylindrical wall (22) extending around a center axis (A). The cylindrical wall (22) includes a plurality of grooves (28a-28e) formed along the circumference (37, 38) of the cylindrical wall (22), each groove (28a-28e) having a constant width (W) along the circumference (37, 38); and a plurality of openings (26) having different heights (H1, H2, H3, H4, H5). Each opening (26) extends from an end surface (36) of cylindrical wall (22) and allows a wire (30a-30c) to pass between an outer area (34) outside the cylindrical wall (22) and an inner space (32) defined by the cylindrical wall (22).