Abstract: An elevator has deflecting pulleys above or below a car, fastenings for securing the ends of a cogged belt disposed in an upper portion of a hoistway. A machine is formed by a gearless motor on the shaft of which are assembled at least one cogged pulley made of a single part with helical cogs and with a diameter greater than 100 mm. The machine has a support, a brake, an integrated deflecting pulley, and non-slip rollers, all of these elements being mounted on a base. The machine is in a projection of a counterweight. The counterweight is disposed at a side of the hoistway. The cogged belt has steel reinforcement cables embedded in transparent polyurethane and the cogged portion is covered with a textile mesh. This configuration achieves a reduction of noise level and uniform translation of the car.

Abstract: An elevator without a counterweight and with a cogged belt and pulley has deflecting pulleys arranged above and below the car, respectively. In the upper portion of the hoistway there is, on one hand, a hanger for the cogged belt and, on the other hand, a machine having a cogged driving pulley. In the lower portion of the hoistway, there is a tensioner associated with a deflecting pulley. Another deflecting pulley is provided. The pulley has a diameter greater than 100 mm, is made of a single part, and has helical cogs. The machine has an associated deflecting pulley and non-slip rollers. The cogged belt is made of transparent polyurethane and a textile mesh covering the cogged portion. In addition to a uniform and well balanced translation of the car, an effective reduction of noise levels is achieved.