A guide rail for an elevator system may comprise at least two rail elements that together form a guide rail portion having a functional running track that extends in a travel direction. Each of the rail elements may be connected to a shaft wall of the elevator system. Furthermore, the at least two rail elements may be adjacent and spaced such that the at least two rail elements can thermally expand freely in the travel direction. Additionally, the at least two rail elements in a region of the functional running track may have mutually opposite borders that have complementary profiles. An arbitrary cross section of the guide rail portion perpendicular to the travel direction in the region of the functional track may run through at least one of the two adjacent rail elements.

A method for refinishing a surface structure of shaft material of an elevator, which extends along a shaft, enables the use of image data to determine an absolute position and/or speed of an elevator car. The elevator includes the elevator car, which is movable in the shaft, a camera, which is arranged at the elevator car and generates the image data from the surface structure, and an evaluating unit, which determines the absolute position and/or the speed of the elevator car from the image data. The surface structure is refinished at least locally in order to increase a distinctiveness of the surface structure in the image data. The shaft material can be, for example, a guide rail, a fastening element of the guide rail, or a shaft wall.

An elevator rope guide system comprises a plurality of rope guides for restricting the swaying of at least one main rope and a plurality of stop mechanisms each configured to stop a corresponding rope guide. The rope guides are located above an elevator car and/or counterweight and are vertically movable along a hoistway. The stop mechanisms are positioned at different intermediate heights along the hoistway. The elevator rope guides are collected by the elevator car or counterweight as the elevator car or counterweight moves up and are stopped by a corresponding stop mechanism as the elevator car or counterweight moves down.

The present invention discloses a self-climbing robot for installing an elevator guide rail, which comprises a climbing mobile platform, a working mobile platform, a rectangular parallelepiped frame and a PLC control unit. The frame is fixedly provided with a first platform, a second platform, a third platform and a fourth platform from bottom to top, the top end of a screw provided vertically is fixedly connected with the fourth platform, and the bottom end of the screw is fixedly connected with the first platform; the climbing mobile platform and the working mobile platform are provided with a nut engaged with the screw and a driving mechanism capable of driving the rotation of the nut, respectively, the driving mechanism comprises a driving motor and a pulley box, the working mobile platform is located above the climbing mobile platform, both the climbing mobile platform and the working mobile platform are slidingly connected with the frame, and the climbing mobile platform and the working mobile platform are only capable of sliding in the vertical direction. The self-climbing robot for installing the elevator guide rail according to the present invention can automatically complete the task of measuring a well and installing a guide rail, and can self-climb in the elevator well.

A drive arrangement includes a movable, rotatable rail segment of an elevator system. An electric motor moves the movable rail segment. The drive arrangement is configured to rotate the rail segment about an angle of rotation of less than 360. An inverter unit provides electrical power to the electric motor and is configured to receive a control command relating to the position of the movable rail segment and provide the electrical drive power based on the control command. The drive arrangement forms two or exactly three drive segments. Each drive segment includes an inverter unit and a coil arrangement, which is supplied with electrical power by the assigned inverter unit. Each inverter unit includes a communication unit, which receives the control command. The communication units are configured to specify amongst themselves a master communication unit and to specify the remaining communication unit as slave communication units.

Examples of the present disclosure describe systems and methods of determining online identity reputation. In aspects, an online identity of an entity may engage in online interactions. The content provided by the online identity may be accessed and analyzed to determine interaction characteristics and reputation metrics for the online identity. Based on the reputation metrics, the online identity and/or entity (and content therefrom) may be filtered from further online interactions. In some aspects, interaction data may be stored in a data store. An interaction mapping component having access to the data store may analyze the data store data to determine mappings between online identities, entities and interactions. In at least one aspect, an opt-in certificate system may also be provided. The opt-in system may provide an online identity or entity a certificate to securely validate identity.

The invention concerns an elevator guide rail bracket for securing a guide rail section to a base via a counterpart, the guide rail bracket comprising a face, a pair of fixed claws arranged into the face, and a fastening part with fastening elements. The claws form a claw coupling with the guide rail section. The claw coupling has a fitting position and a retaining position. The guide rail bracket is attached to the guide rail section by fitting the guide rail section between the claws and turning the guide rail bracket from the fitting position to the retaining position.

An elevator system may include at least two elevator cars that are movable along a common rail section on a wall. The common rail section may comprise a plurality of rail segments arranged consecutively along a direction of travel of the elevator cars. Furthermore, the rail section may comprise at least one first rotary segment. A first rail segment of the plurality of rail segments may be arranged adjacent to the first rotary segment. The first rail segment may be fixed to the wall via a first fixed bearing such that the first rail segment is fixed in all three directions in space with respect to the wall. The first fixed bearing may be positioned at an end of the first rail segment that faces the first rotary segment.

Examples of the present disclosure describe systems and methods of issuing certificates. One embodiment includes a non-transitory, computer-readable medium comprising computer executable instructions stored thereon, the computer executable instructions executable for receiving a certificate request from an online identity, wherein the certificate request validates a reputation of the online identity, analyzing the certificate request, based on the analysis, determining to issue a certificate, and issuing the certificate to the online identity.

An elevator system includes a lifting platform for securing at a plurality of securing positions in an elevator shaft and at least one guide rail for vertically guiding an elevator car in the elevator shaft. The lifting platform has a protective roof that protects the lifting platform against falling objects, wherein the protective roof has a rail opening, through which the guide rail extends, and wherein the protective roof has a cover covering the rail opening, the cover having a cover opening through which the guide rail extends.