Abstract: The device with a cutting tool for producing a material predetermined breaking point for the release of airbags integrated in instrument panels, in side trims of doors of a vehicle and in the steering wheel hub as passenger protection consists in that, for the in-process control of the residual wall thickness of indented materials for the formation of weakening lines or of predetermined breaking and separating lines, at least one distance sensor (85) with a principle of measurement is provided on the cutting head (10) of the cutting tool (100) next to the cutting blade (35) thereof or next to the cutting tool connected with the guiding and movement device thereof for measuring the distance to the cutting counterplate (81).

Abstract: A connecting lock and a sheet pile wall, wherein the connecting lock has a straight end and a curved end which are arranged on one side of a center piece, and a hook-shaped end which is arranged on the other side of the center piece. The hook-like end may be arranged directly across from the straight end or the curved end.