Roof comprising a hollow body made of a foil, with a convex top and a chamber capable of holding a gas or a gas mixture lighter than air, is provided with means for attaching it to a holding structure

摘要

The roof comprising a hollow body (1) made of a foil (1a), with a convex top (5) and a chamber (2) capable of holding a gas or a gas mixture lighter than air, is provided with means allowing it to be attached to a holding structure in such a way that it fully extends over the area to be covered.