Abstract: A roller guide for guiding a car of an elevator system along a guide rail may include a roller carrier that can be attached to the car and several rollers disposed on the roller carrier. The roller may be configured to roll by their respective running surface on a rolling surface of the guide rail. The rollers may each be mounted movably in the roller carrier with a direction component perpendicular to the rolling surface of the guide rail. The rollers may be mounted in operative connection with one another at least in part by way of hydraulic fluid such that a movement of one of the rollers perpendicular to the rolling surface of the guide rail causes a directionally-opposite movement of at least a second of the rollers. The present disclosure also concerns a car and an elevator system that employ such roller guides.

Abstract: A method for operating an elevator system with a car that moves in an elevator shaft may involve detecting an operating parameter related to a change in loading of the car, ascertaining whether a position of the car relative to a stopping floor needs to be adjusted based on the operating parameter, determining times at which the car is to be stopped and at which the adjustment is to be performed, stopping the car and blocking a flow of energy of a drive of the car and/or activating a service brake as the car is being stopped and/or while the car is stopped, and adjusting the position of the car if necessary. Further, whether the adjustment is necessary may be ascertained before the car is stopped.

Abstract: An elevator governor inertia carrier has a cartridge having a shaft opening for receiving a shaft. The cartridge is configured for fixed attachment to the shaft. At least one force-exerting element is associated with the cartridge and has a hollow body with an internal cavity extending between a first open end and a second end, an elastically-resilient element retained within the internal cavity, and a contact member at least partially disposed within the internal cavity and in contact with an end of the elastically-resilient element. The contact member is retractable into the internal cavity to compress the elastically-resilient element when a force greater than a restoring force of the elastically-resilient element is applied to the contact member.

Abstract: Depth cameras may be placed within an elevator car hoistway to capture depth images of the elevator rope. 3D sensing software may be used to identify the rope within the depth images and assign tracking points to locations along the rope. Tracked images are saved over time and compared to prior tracked images to determine the movement of tracked points between images. Movement of tracked points may be used to determine the velocity, acceleration, frequency of wave motion, and other characteristics of the rope during a period of time. When measured characteristics exceed specified thresholds, the system may take one or more actions to mitigate the undesirable behavior or provide notification of the undesirable behavior.

Abstract: One elevator system includes an elevator car, counterweight, traction sheave, support wrapped around the traction sheave and suspending the car and the counterweight, a compensation sheave, a compensation member wrapped around the compensation sheave and being affixed at a first end to the elevator car and at a second end to the counterweight, and a tensioner. The support is driven by rotation of the traction sheave to raise and lower the car, and the tensioner is in communication with the traction sheave for linearly displacing a rotational centerpoint of the traction sheave. Another elevator system has an elevator car, counterweight, compensation sheave, compensation rope wrapped around the compensation sheave and being affixed to the car and the counterweight, a traction sheave driving a support suspending the car and the counterweight, and a tensioner in communication with the traction sheave for inducing a variation in tension of the compensation rope.

Abstract: An electromechanical brake comprising mobile induced elements or sectors or frames (2), the number of mobile induced elements (2) or sectors being at least three, where one of the sectors acts faster than the rest, and where one of the sectors acts in a delayed manner with respect to the rest of the sectors in the case of an emergency, said time-delayed actuation being achieved by means of the antiparallel arrangement of a diode (6) on the coil (5) associated with said sector. Smooth and progressive stop is thus achieved in the case of an emergency.

Abstract: The invention relates to a transporting apparatus for transporting people, characterized by at least one structure-borne-sound-transmission region, which is acted on directly or indirectly by a structure-borne-sound transducer which is intended to generate vibrations which, when the structure-borne-sound-transmission region is touched by a person, are transmitted as structure-borne sound via the person's body and are audible to the person.

Abstract: The present disclosure concerns a method for operating an elevator system which comprises a shaft system and at least three cars, which is designed for separately moving the cars in at least a first direction of travel and in a second direction of travel. The at least three cars are moved separately in sequential operation each time and for each car a stop point at which the car can stop if necessary is continuously predicted at least for one direction of travel. The distance of the predicted stop points of neighboring cars from each other is thereby continuously determined. The elevator system is transferred to a safety mode if a negative distance of the stop points is determined.

Abstract: A method for determining a stator current vector for starting a synchronous machine of a drive of a passenger transportation apparatus having a rotor and a stator with a stator winding may involve imposing different stator current vectors with different stator current vector directions on the stator winding over the course of a plurality of current application operations, determining from the different stator current vectors a minimum stator current vector with a minimum stator current vector direction at which a minimum driving torque acting on the rotor is generated in the synchronous machine, determining a starting stator current vector with a starting stator current vector direction from the minimum stator current vector, and imposing the starting stator current vector on the stator winding for starting the synchronous machine.

Abstract: The invention relates to an elevator system (10) for a building under construction, comprising a vertical shaft (12), in which a temporary machine compartment (14) is retained, a driving device (18), which is arranged in the temporary machine compartment (14) and which is coupled by means of a supporting cable (21) to a car (23) that can be moved vertically up and down in the shaft (12), and a speed limiter (30), which interacts with a speed limiter cable (34) arranged in the shaft (12).

Abstract: An elevator installation includes a shaft in which a first elevator car and a second elevator car arranged below the first elevator car are movable upward and downward in the vertical direction separately from each other. Each elevator car is coupled to a counterweight via a rope or belt arrangement. At least one rope or belt arrangement has two rope or belt sections via which one of the elevator cars is coupled to a counterweight and which extend laterally along the other elevator car. In order to avoid impairment of an elevator car by rope or belt oscillations, the elevator car has at least one limiting member which is held in a predetermined position in the shaft and is assigned to a rope or belt section and has at least one limiting element which is movable between a limiting position and a release position depending on the position of the elevator car which is coupled to the counterweight via the associated rope or belt section.

Abstract: The present disclosure relates to a car door for a lift car having a guide mechanism and a door leaf. The guide mechanism comprises in this case a sliding shoe, which is connected to the door leaf of the car door. Furthermore, the guide mechanism comprises a receiving part which surrounds the sliding shoe on at least three sides. The sliding shoe has, in a sliding direction, an extent which corresponds to at least 30% of the extension of the door leaf in this direction.

Abstract: The disclosure relates to an elevator system consisting of a plurality of elevator carriages, a shaft system, a drive system for separately moving the elevator carriages within the shaft system, as well as a safety system having a plurality of safety nodes designed to bring the elevator system into a safe operating mode if an operating mode of the elevator system, which deviates from the normal operation mode, is detected. The elevator carriages, the shaft system and the drive system form a functional unit. One of the safety nodes is always assigned to one of the functional units, wherein the safety nodes are each connected to at least another safety node through an interface for transmitting data. Each safety node includes at least one sensor, which detects an operating parameter of the corresponding assigned functional unit.

Abstract: The disclosure relates to a lift installation having a lift car which can be moved along a guide rail. The lift installation here comprises at least a first pair of rollers and a second pair of rollers. The guide rail runs between the two rollers of the first pair of rollers and between the two rollers of the second pair of rollers. The lift installation also has an apparatus for subjecting the lift car to a retaining force, wherein there is a horizontal offset between the point at which the retaining force takes effect and the center of gravity of the lift car, and therefore the lift car is subjected to a first torque.

Abstract: An elevator with a brake device may be configured to provide a variable brake force, from a minimum brake force up to a maximum brake force (Vmax). The brake device may include a first energy store that provides the maximum brake force and a second energy store that provides an adjustable counterforce. The adjustable counterforce may be directed in an opposed manner with respect to the maximum brake force provided from the first energy store. Further, the variable brake force may amount to a difference between the maximum brake force and the adjustable counterforce. In some cases, the first energy store may comprise a compression spring for providing the maximum brake force.

Abstract: The invention relates to a method for the processing of call inputs of a user by an elevator controller of an elevator installation in which a user inputs either an external call and an internal call or a destination call into the elevator controller, wherein the elevator controller generates at least two sub-calls in reaction to the internal call or the destination call, wherein the sub-calls comprise at least one external call and/or at least one internal call whose destination floor is different from the destination floor of the internal call input by the user. The invention furthermore relates to a method in which an elevator controller generates a destination call or an internal call in reaction to an external call. The invention furthermore relates to corresponding elevator installations designed for carrying out these methods.

Abstract: The present disclosure relates to a method for operating an elevator system, which is embodied as shaft-changing multi-car system. A number of cars is assigned to at least three elevator shafts. The cars can be moved in upwards direction and downwards direction inside the individual elevator shafts, as well as between the individual elevator shafts. A successive reversal of the travel directions of the respective cars occurs hereby.

Abstract: People movers, such as escalators and moving walkways, for instance, may comprise a support member belt comprised of a plurality of support members guided on rails. The support members may be, for example, steps of an escalator or pallets of a moving walkway. Each support member may be secured to a pair of drag rollers that runs on the rails, and each support member may include a roller spindle that is held rotationally conjointly in or on a body of the support member. Between the roller spindle and the body of the support member, there may be a plug-in connection by way of which the roller spindle is maintained against an undercut under bias of a latching device.

Abstract: A device for checking guides of an elevator car that can be moved along guide rails may include means for measuring contact forces of the guides on the guide rails. The device may further include an evaluation unit. The means for measuring contact forces may be configured to make measured values determined by the means for measuring contact forces available to the evaluation unit, either through wired connection or wireless connection. In some cases, the means for measuring contact forces may measure contact forces on the guide rails in at least two different directions. Also disclosed are methods for balancing elevator cars.

Abstract: A method for operating an elevator system, which may include at least two cars that can move independently of one another within a common elevator shaft, may involve determining with an elevator controller to cause a first car of the at least two cars to perform a transportation process from a start stopping point to a destination stopping point. The elevator controller may determine a starting time and travel parameters according to which the first car carries out the transportation process from the start stopping point to the destination stopping point. The starting time and the travel parameters may be determined by taking into account state parameters of a second car of the at least two cars.