Förfarande och anordning för att driva fram en optofiberkabel i en rörledning

摘要

The present invention concerns a procedure and a system for feeding optical fiber cables into a pipeline with the help of an installation device at adjustable speed. In order to prevent damage during the advancement of the optical fiber cable the engine ( 15 ) of the installation device has been supplied with a friction safety clutch ( 17 ) exerting pressure on a moving coil ( 18, 23 ).