Improved device for fixing elements and machines on walls, walls, walls and ceilings (Machine-translation by Google Translate, not legally binding)

摘要

Device for fixing elements on walls, floors and ceilings, characterized by comprising an axially drilled bushing, which in the middle part of its length is provided with a female internal thread, of variable size, adjusted to the normalized dimensions, the inside diameter being of the bushing, in its anterior part to this thread, greater than the greater of this and in its lower part smaller than the smaller of the same thread. (Machine-translation by Google Translate, not legally binding)