PLS Rail traverse trolley
An XY system is to provide an unlimited number of lifting places within a room, enabling a person to be lifted from practically anywhere within the four walls. This is achieved by installing two parallel tracks on each side of the room, either on the ceiling or on opposite walls.
A moving section of track then runs at 90° to the parallel rails, the traverse rail. The components that allow the Traverse rail to slide up and down the parallel tracks, are the Traverse Trolleys.