Cover to seal vat opening of an irregular shape, and especially a masonry wine fermenting vat, has sealing plate of rigid linked sections and a counter plate to fill the space when pressed in one direction and released by counter pressure

摘要

The sealed cover, especially for the metal ring opening (4) of a masonry wine fermentation vat (3), has at least one sealing plate (1) of a rigid material with sections linked together by flexible joints against the internal vat pressure (8). A counter plate (10) is attached to the sealing plate by distorting links or hinges (5), so that the assembly takes up its shape when pressed (6) mechanically in one direction, while pressure in the other direction allows the cover to be inserted and removed.