Patent ID: 6314692
Filing Date: 2001-11-13
Classification: E04G,F16L

Abstract:
A cast-in concrete (1), lead-in system (2) for ceilings and walls having a trapezoidally corrugated sheet metal formwork (7), the system comprising a lead-in sleeve (3)) for receiving one of a tubular conduit and a cable and having at least three outer, circumferentially spaced from each other, fixing points (4a, 4b, 4c) for securing the lead-in sleeve to the trapezoidally corrugated sheet metal formwork (7); and at least two stiff locking elements (5a, 5b) each having connection means (12) for a formlocking connection with the fixing points (4a, 4b, 4c) of the lead-in sleeve and mounting means (6) for securing the locking element (5a, 5b) to peak regions (8) of trapezoidal corrugations of the trapezoidally corrugated sheet metal formwork.