[Frank]’s solution is an overhead trolley to support the hoses more or less vertically over the router while letting the duct swivel as the gantry moves around the work surface. There were a few ...

One possible solution is an embedded electrical rail in the road like the [eRoadArlanda] that Sweden unveiled in 2016. Overhead electrical wires like those used in trolleys have been around since ...

research is developing alternative overhead line equipment designs based on a classical trolley wire systems. Overhead Line Equipment (OLE) used nowadays is primarily a catenary type which provides ...