Abstract: A drive system for an entry/exit facility with at least one pivotably and/or slidably mounted door, ramp, tread or the like of a passenger transport vehicle, the system including at least one actuator or drive motor and a mechanical system driven by it and/or a gear unit for effecting the pivoting or sliding movement of the door, ramp, tread or the like, with an absolute value encoder for acquiring a momentary position during the pivoting or sliding movement, where an evaluation unit is configured to compare the momentary position with at least one reference position stored in a non-volatile memory of the evaluation unit in order to generate an output signal dependent thereon, and the absolute value encoder is flange-connected to a pin that fixes the pivoting movement of the door, ramp, tread or the like, and the gear unit includes a first reduction gear unit, a second reduction gear unit, and a controllable coupling is provided between the reduction gear units.

Abstract: A drive apparatus for boarding and unboarding devices, in particular for passenger doors, boarding ramps, retractable steps and the like on public transport vehicles having an electric drive motor the driven element of which is connected to the input element of a first reduction gear the output element of which is coupled to the actuation devices for the boarding and unboarding devices where the drive apparatus is constructed as a compact drive where the electric drive motor, the first reduction gear and a second reduction gears as well as an energizable clutch are disposed axially behind each other inside a tubular housing between the first reduction gear and the second reduction gear.

Abstract: The invention relates to a sealing ring (1) for push-fit socket connections. The sealing ring (1) is characterized by consisting of a high-quality elastomeric plastic material or an elastomer as an element of the scaling ring and comprises, on the seal base, an end piece (2) from a harder plastic material, such as PP, as the care which is at least partially surrounded by the sealing material (3), thereby forming a base element. The end piece (2) as the core of the inserted sealing (1) is associated, at the seal base in the direction of insertion of the pipe, with the bead (5) and its end section is configured without sealing material (3) at the seal base.