Abstract: A rail system for an elevator system has at least one vertically aligned rail for guiding vertically movable components of the elevator system, wherein the rail is anchored to at least one substantially vertically aligned wall at different height positions using anchoring devices. The rail bridges interspaces between adjacent ones of the anchoring devices, wherein the interspaces vary at least within a section of the rail depending on a local load on the rail, and the lengths of the interspaces within the section vary in a monotonically decreasing manner depending on a dead weight of the rail arranged locally above.

Abstract: An elevator car arrangement for a double-deck elevator has a car frame; a first car coupled to the car frame; a second car arranged on the car frame above or below the first car and coupled to the car frame so as to be movable in a vertical direction relative to the car frame and relative to the first car; a push chain coupled, with a first end of a force absorption section of the push chain, to the first car or to the car frame, and with an opposite, second end of the force absorption section to the second car, and is arranged such that the second car exerts a pressure load on the force absorption section due to gravity; and a drive device coupled to the push chain to displace the second car in the vertical direction relative to the first car by the push chain.

Abstract: A mobile transport device and a method for introducing an installation frame into a shaft, in particular an elevator shaft, are used for transporting an installation frame and for introducing the installation frame into the shaft. The installation frame has a base frame and a bearing frame on which the installation frame is supported from above. The transport device additionally has a fixing device arranged on the base frame for fixing the base frame to a shaft opening of a shaft wall of the shaft and for preventing the transport device from tilting. The bearing frame is supported by the base frame and is movable in the horizontal direction relative to the base frame such that, when the base frame is arranged outside of the shaft, the bearing frame, and thus also the installation frame, can be moved into the shaft from outside the shaft through the shaft opening.

Abstract: An elevator car arrangement for a double-deck elevator has a car frame; a first car coupled to the car frame; a second car arranged on the car frame above or below the first car and coupled to the car frame so as to be movable in a vertical direction relative to the car frame and relative to the first car; a push chain coupled, with a first end of a force absorption section of the push chain, to the first car or to the car frame, and with an opposite, second end of the force absorption section to the second car, and is arranged such that the second car exerts a pressure load on the force absorption section due to gravity; and a drive device coupled to the push chain to displace the second car in the vertical direction relative to the first car by the push chain.

Abstract: A mobile transport device and a method for introducing an installation frame into a shaft, in particular an elevator shaft, are used for transporting an installation frame and for introducing the installation frame into the shaft. The installation frame has a base frame and a bearing frame on which the installation frame is supported from above. The transport device additionally has a fixing device arranged on the base frame for fixing the base frame to a shaft opening of a shaft wall of the shaft and for preventing the transport device from tilting. The bearing frame is supported by the base frame and is movable in the horizontal direction relative to the base frame such that, when the base frame is arranged outside of the shaft, the bearing frame , and thus also the installation frame, can be moved into the shaft from outside the shaft through the shaft opening.

Abstract: An elevator installation and a method of operating the elevator system for temporary transportation of an overload within the elevator installation includes a car and a counterweight interconnected by one or more suspension ropes engaging a traction sheave that is driven by a motor. The traction between the suspension ropes and the traction sheave is enhanced independently of the counterweight for intended overload operation.

Abstract: An elevator installation and a method of operating the elevator system for temporary transportation of an overload within the elevator installation includes a car and a counterweight interconnected by one or more suspension ropes engaging a traction sheave that is driven by a motor. The traction between the suspension ropes and the traction sheave is enhanced independently of the counterweight for intended overload operation.

Abstract: A method for erecting an elevator system in an elevator shaft of a building includes performing at least one lift process to adapt a usable lift height of the elevator system to an increasing height of the building. During the lift process, a drive platform, which supports an elevator drive machine and, via a flexible support, an elevator car and a counterweight, is lifted along at least one elevator car guide rail. Prior to the lift process, the at least one elevator car guide rail is elongated in the upwards direction above the drive platform and fixed to a shaft wall of the elevator shaft by at least one auxiliary support in the region of the elongation. After the lift process, the at least one auxiliary support, which then lies below the drive platform, is replaced by a final guide rail mounting which is designed differently than the auxiliary support.

Abstract: A method for erecting an elevator system in an elevator shaft of a building includes performing at least one lift process to adapt a usable lift height of the elevator system to an increasing height of the building. During the lift process, a drive platform, which supports an elevator drive machine and, via a flexible support, an elevator car and a counterweight, is lifted along at least one elevator car guide rail. Prior to the lift process, the at least one elevator car guide rail is elongated in the upwards direction above the drive platform and fixed to a shaft wall of the elevator shaft by at least one auxiliary support in the region of the elongation. After the lift process, the at least one auxiliary support, which then lies below the drive platform, is replaced by a final guide rail mounting which is designed differently than the auxiliary support.

Abstract: An elevator installation and a method of operating the elevator system for temporary transportation of an overload within the elevator installation includes a car and a counterweight interconnected by one or more suspension ropes engaging a traction sheave that is driven by a motor. The traction between the suspension ropes and the traction sheave is enhanced independently of the counterweight for intended overload operation.