Fecha de publicación: -- Fuente: WIPO "tomato" An opening device for a package having a designated pour opening and being filled with a pourable includes a collar having a central axis and a pouring outlet, a lid connected to the collar and angularly movable about a hinge axis between closed and open positions in which the lid, respectively closes and opens, the pouring outlet, a closing element configured to close the designated pour opening and being detachably and/or rupturably attached to the collar and a plurality of leg elements connected to and protruding from the closing element and being coupled to the lid. One main leg element of the plurality of leg elements is farther away from the hinge axis than the other leg elements. The main leg element is intersected by an intersection plane comprising the central axis. The leg elements are arranged asymmetric with respect to one another and with respect to the intersection plane.