e-tract is a solution for the automatic rewinding of a cable. This prevents hazards and cable damage due to improper winding or obstructing cables. The e-tract is used in applications where a mobile terminal is connected to a cable and was previously rolled up by hand. Multiple deflection means that long extension lengths are possible where there is limited installation space. A slip ring is dispensed with completely.
The design makes the mechanical principle visible: The lower wheel moves up when the cable is pulled out, and it moves down again when it´s retracted.
