Abstract: A safety device for the side edges of every escalator step tread plate and riser is formed of an elastic synthetic material of a very low coefficient of friction. All ribs on the body of the safety device are supported tiltably such that under loading the outermost safety rib touches the handrail base and closes the air gap between the step and the base. The tilting is controlled by a wedge-shaped recess formed in the body. The recess is closed toward the air gap by either an inwardly arched terminating wall or by a flange.

Abstract: The door drive is intended for use with a relatively great number of different elevator cars, different types of sliding doors, and different widths of sliding door panels. The door drive is readily adaptable to different installations merely by appropriate adjusting and conversion work without dismounting the door drive. The door drive is fitted with its supporting structure above the door opening on the roof of the elevator car. A toothed belt serves as a drive for one panel of a sliding door and is trained around a stationary and a positionally changeable deflection roll. The positionally changeable deflection roll can be adapted to each required displacement path of a given door panel by positionally changing a shaft of such deflection roll to a preselected one of a number of fixing holes provided in the supporting structure.

Abstract: To each panel is associated a panel suspension and guiding arrangement which comprises rollers cooperating with at least one guiding rail and through which the panel is slidably supported on the door frame. An extension of the guiding rails laterally beyond the door frame is avoided, in closing position of the door, through the provision of the panel suspension and guiding arrangement which is constructed to comprise a fixed guiding rail along which moves at least one roller movable with the panel, and a guiding rail movable with the panel and displaceable over a roller fixed in position. Such an arrangement facilitates the transportation, the handling and the mounting of doors, namely fully equipped landing doors, whether they be of the central opening or telescopic panel type.

Abstract: To each panel is associated a panel suspension and guiding arrangement which comprises rollers cooperating with at least one guiding rail and through which the panel is slidably supported on the door frame. An extension of the guiding rails laterally beyond the door frame is avoided, in closing position of the door, through the provision of the panel suspension and guiding arrangement which is constructed to comprise a fixed guiding rail along which moves at least one roller movable with the panel, and a guiding rail movable with the panel and displaceable over a roller fixed in position. Such an arrangement facilitates the transportation, the handling and the mounting of doors, namely fully equipped landing doors, whether they be of the central opening or telescopic panel type.

Abstract: The lift landing door frame arrangement contains horizontally adjustable lateral caulking or sealing elements arranged at uprights of the door frame and a vertically adjustable top caulking or sealing element associated with the topside of the door frame. To avoid retouching due to the caulking elements at the time of placement of the lift landing door frame arrangement and to avoid the formation of gaps in the door frame after placement, each lateral caulking element comprises a rectangular sheet metal panel of a length which exceeds the height of the door frame. Each lateral caulking element engages with and is fixed to the interior of the related upright. Each lateral caulking element is also guided for simultaneous vertical and horizontal adjustment at a guide plate carried by the related upright. The vertically adjustable top caulking element is constituted by a U-shaped sheet metal strap which is disposed astride the front parts of the door frame and is laterally guided thereat.