Trailer coupling for tractor-trailer vehicle combination has supply line couplings closed upon assembly of cone coupling and coupling seat

摘要

The trailer coupling has a coupling seat (1) and an angularly movable cone coupling with a conical body (2) inserted in the coupling seat, provided around its outside with supply lines (3) or protection lines for supply lines. The coupling seat and the cone coupling are provided with cooperating line coupling halves (4a,4b) for closure of the line couplings (4) upon reception of the conical body in the coupling seat.