Abstract: A pouring cap for mounting atop a neck of a container is unitarily formed of a synthetic resin with a body adapted to fit over the neck of the container and having an outer body edge centered on an axis, a central pour tube within the edge and forming an axially throughgoing outflow passage, and a cover sealingly engageable in a closed position with the body over the passage at the edge. A hinge is provided on the edge between the body and the cover and a hook projects axially from the cover in the closed position past the edge of the body at a location on the edge generally diametrically opposite the hinge. A retaining element defines with the body an opening adjacent the edge opposite the hinge location. The hook is engageable with elastic deformation through the opening to catch underneath the retaining element and once inserted through the opening is engaged such that the hook or the element must be permanently deformed to move the cover from the closed position.

Abstract: A cap comprising a cylindrical skirt extending from a frustoconical part, the connecting area between the cylindrical skirt and the frustoconical part being located essentially at the level of a shoulder provided in a body composed of a stopper body or in the container to be equipped itself. This connecting zone has at least one tongue delimited by two vertical slots and one horizontal slot, the horizontal edge of the tongue delimited by the slot being provided on the inside of the cap with an extension forming a first tooth which is located, when the cap is in the closed position, adjacent to a second tooth or projection associated with body when the cap is located in the unscrewing direction.

Abstract: A stoppering device non-removably attached to the flanged neck of a container has a base (8) projecting beyond the neck of the container, with at least two arcuate surface sections extending from the base and disposed along a circle having a diameter slightly greater than that of the outer surface of the flanged neck (5). Each arcuate surface section (16) is extended on at least one of its sides in the circumferential direction by a locking foot (17). Each foot is integral with the arcuate surface at the end of the section opposite to the base (8) and is inclined inward from the end integral with the arcuate surface section (16) to a free end of the foot located toward the base (8). Each foot abuts the flanged neck (5) and holds the stoppering device securely onto the container.