ANORDNING FOR FORSVARANDE AV OBEHORIGT AVLEGSNANDE AV LOCK OCH GALLER HORANDE TILL VA-ANLEGGNINGAR

摘要

A device for rendering it more difficult to remove a cover and grating belonging to water supply and sewage systems. A rubber component (3) is placed on at least one of the grating's/cover's sides, inside the surrounding frame. The rubber component is made to expand via the insertion of a metal object (4) into the said component.