A specially designed device for securing sewers and underground shafts. The device is attached to the inner side of a cover, gate, door or grille rendering it impossible to remove by standard workshop tools.
The lock has been developed for a wide range of covers, and it is not necessary to change the type or dimensions thereof. It is possible to attach the device to the covers directly at the cover manufacturer’s site or later when the covers have been installed in the roads. The security device attachment does not interfere with the cover’s properties or affect its possible certification.
protected as a Utility Model no. 18863