Improvements introduced in the unión of hollow objects to elements of sustainability. (Machine-translation by Google Translate, not legally binding)

摘要

Perfections introduced in the unión of hollow objects to support elements, characterized in that the hollow part is formed with thick-walled elastic material to maintain its shape against an external pressure moderately higher than the pressure that may exist in its interior hollow or to have the rod or stem to which a cylindrical or prismatic end is to be attached that serves as a guide to the hole joining the hollow interior of the elastic piece with the atmosphere, said rod or stem having an annular projection as a stop on which it will have to joining the outer surface of the hollow part and in the vicinity of the hole ending said annular projection by a very flexible and thin wing that can adapt to said outer surface of the hollow part that surrounds the hole inserted in the end of the stem. (Machine-translation by Google Translate, not legally binding)