9 safety ropes and fall arrest safety belts made of metal or plastic or natural materials with or without fall dampers; safety fall arrests for ladders, podiums and platforms consisting of metal guide rails, metal safety catches running therein and safety belts secured thereto and structural parts thereof; lowering devices, namely, rescue devices or descender devices for lowering persons from ladders, podiums, platforms or poles; height safety devices, namely, safety brakes in the nature of rope grabs attached to a rope, to which the person to be protected is secured, and structural parts thereof; safety fall arrests consisting of guide rails attached to slides and functioning as fastening points and safety belts to be fastened thereon, and structural parts thereof