Patent ID: 8407876

Claim:
A modernization method for conversion of an existing hydraulically actuated elevator installation into a modernized elevator installation driven by a drive machine with a drive pulley, comprising the steps of: demounting a hydraulic cylinder of the hydraulically actuated elevator installation; installing a drive machine with a drive pulley in the modernized elevator installation; installing a counterweight guide and a counterweight in the modernized elevator installation; mounting a drive platform at an elevator car of the hydraulically actuated elevator installation substantially below an underside of the elevator car, wherein the drive platform has a first car support roller and a second car support roller; installing a support means so that the support means loops partly around the drive pulley, a support roller of the counterweight and the car support rollers, supports the elevator car by the car support rollers and is drivable by the drive pulley of the drive machine for movement of the elevator car; and wherein the drive platform is of multi-part construction, wherein a first part of the drive platform carries the first car support roller, which is arranged on one side of the elevator car, and a second part of the drive platform carries the second car support roller, which is arranged on an opposite side of the elevator car, and wherein a spacing between the first part and the second part and thus between the first car support roller and the second car support roller is set at a time of manufacture or during the performance of the steps of the modernization method.